US20050109024A1 - Electrically controlled exhaust valve - Google Patents
Electrically controlled exhaust valve Download PDFInfo
- Publication number
- US20050109024A1 US20050109024A1 US10/724,268 US72426803A US2005109024A1 US 20050109024 A1 US20050109024 A1 US 20050109024A1 US 72426803 A US72426803 A US 72426803A US 2005109024 A1 US2005109024 A1 US 2005109024A1
- Authority
- US
- United States
- Prior art keywords
- recited
- electric actuator
- exhaust pipe
- valve
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/04—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by mechanical control linkages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
- F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area
Definitions
- This invention generally relates to an exhaust system for a motor vehicle having a variable displacement engine, and specifically to an exhaust valve disposed within the exhaust system for controlling noise emissions from the exhaust system.
- a variable displacement engine controls actuation of specific cylinders within an engine.
- all cylinders of an multiple cylinder engine are providing power at all times during operation of the vehicle. Under some driving conditions, power produced from all cylinders is not required to propel the vehicle.
- the variable displacement engine shuts down some of the cylinders to conserve fuel and increase gas mileage. During periods of low engine demand only half of the cylinders operate to propel the vehicle.
- the selective actuation of engine cylinders provides the most noticeable improvements in fuel efficiencies for larger vehicles with larger engines.
- a valve within an exhaust system to reflect a portion of exhaust flow back through the engine to condition sounds from the exhaust system.
- Actuation of the valve is provided by a vacuum powered actuator.
- the vacuum powered actuator utilizes vacuum supplied by the engine through flexible hoses or tubes routed under the vehicle.
- the underside of a vehicle is a particularly harsh environment.
- the flexible hoses used to supply vacuum to the actuator become brittle and crack with age resulting in vacuum leaks and malfunction of the actuator.
- This invention is an exhaust system for a motor vehicle including an exhaust valve that is actuatable to block a portion of an exhaust pipe to reflect sound waves to condition sound emitted from the exhaust system.
- the exhaust valve of this invention includes a valve plate moveable about an axis within a valve body.
- the valve body is disposed within an exhaust pipe before or after a muffler. The placement of the valve body is dependent on the desired sound of the exhaust system.
- the valve plate is actuated by an electric actuator mounted within a housing.
- the housing for the actuator is supported a distance from the exhaust pipe by a valve neck.
- the valve neck is a tubular member having flanges at each end.
- the tubular configuration of the valve neck reduces the amount of thermal energy transmitted from the exhaust pipe to the housing.
- Electric actuators are dependable and relatively inexpensive, and are therefore more desirable than alternatively powered actuators.
- the reduction in thermal conduction between the valve body and the support housing prevents a substantial amount of heat from radiating to the electric actuator.
- the exhaust system of a vehicle produces high temperatures that present a challenge to the use of an electric actuator. It is for this reason that the exhaust valve of this invention includes features that isolate the electric actuator from thermal energy produced by the exhaust pipe.
- the exhaust valve assembly of this invention utilizes an electric actuator to provide conditioning of noise emitted from the exhaust system to provide a consistent desired sound regardless of changes in engine displacement.
- FIG. 1 is a cut away view of an exhaust valve assembly according to this invention
- FIG. 2 is a cross sectional view of the exhaust valve assembly according to this invention.
- FIG. 3 is a cut away view of the support housing and actuator according to this invention.
- FIG. 4 is a top cut away view of the exhaust valve of this invention.
- FIG. 5A a top cut away view of an exhaust valve according to this invention with a rotary actuator
- FIG. 5B is a side view of the rotary actuator.
- an exhaust system 10 includes an exhaust pipe 12 .
- Exhaust gases 16 flow through the exhaust pipe 12 after being discharged from combustion cylinders of an engine.
- the exhaust gases 16 resonate through the exhaust pipe 12 to emit a distinctive sound.
- the sound differs with the displacement of the engine.
- the noise emanating from the exhaust system 10 varies in response to changes in displacement. It is desirable for sounds emanating from the exhaust system 10 to have a consistent sound regardless of the displacement of the engine.
- an exhaust valve assembly 11 is actuated to change the function of the exhaust system dependent upon engine displacement.
- the exhaust valve assembly 11 is disposed within the exhaust system 12 .
- the exhaust valve assembly 11 includes a valve body 14 that is installed within the exhaust pipe 12 .
- the valve body 14 houses a valve plate 24 that rotates about an axis of rotation 23 between an open and closed position. In the open position the valve plate does not block a noticeable portion of exhaust flow 16 . In the closed position, the valve plate 24 preferably blocks between 75% and 90% of the exhaust flow 16 .
- the specific amount of exhaust flow blocked by the valve plate 24 is tailored to a specific application to produce the desired consistent sound. The specific portion of exhaust flow 16 blocked by the valve plate 24 provides control of sound emitted from the exhaust system 10 .
- Partially blocking the flow of exhaust 16 through the exhaust pipe 12 creates an increase in backpressure.
- the increase in backpressure reflects sound waves back within the exhaust system 10 . Reflecting the sound waves provides for the control of sounds from the exhaust system 10 .
- the sound of the exhaust system 10 is controlled to duplicate the sounds of the engine at the largest displacement regardless of the actual displacement at which the engine is operating.
- the exhaust valve 11 of this invention includes an electric actuator 22 .
- the electric actuator 22 is provided to provide the mechanical force for operation of the exhaust valve assembly 11 .
- electric actuators are durable and have relatively long operational life. Further, electric actuators are easily integrated into current vehicle configurations.
- the electric actuator 22 is housed within a support housing 38 .
- the support housing 38 is spaced a distance from the valve body 14 by a valve neck 20 .
- the valve neck 20 includes a first flange 26 attached to the valve body 14 by bolts 28 . Between the flange 26 and bolts 28 are seals 30 .
- the seals 30 thermally isolate the valve neck 20 from the valve body 14 .
- a heat shield 18 is attached to the exhaust pipe 12 by straps 19 between the exhaust 12 and the actuator 22 .
- the heat shield 18 is spaced a distance from the pipe 12 to create an air space 17 ( FIG. 2 ) that aids in shielding heat from being emitted toward the actuator 22 .
- the exhaust valve assembly 11 is shown in cross section such that the heat shield 18 can be seen spaced apart from the exhaust pipe 12 .
- the space 17 between the heat shield 18 and exhaust pipe 12 reduces radiant heat emitted from the exhaust pipe 12 toward the actuator 22 .
- the valve neck 20 includes the first flange 26 that is attached to the valve body 14 .
- the first flange 26 and bolts 28 include seals 30 disposed on either side of the first flange 26 .
- the seals 30 inhibit conduction of thermal energy into the valve neck 20 .
- the valve neck 20 includes a tubular portion 54 .
- the tubular portion 54 substantially reduces the amount of heat transmitted from the exhaust pipe 12 to the support housing 38 .
- the support housing 38 includes a plate 40 disposed between the actuator 22 and the exhaust pipe 12 .
- An actuation tube 32 is attached to the valve plate 24 and extends through the valve neck 20 .
- the actuation tube 32 is hollow and rotates about the axis of rotation 23 . Rotation of the actuation tube 32 is accomplished by linear movement of the actuator 22 .
- the configuration of the actuation tube 32 also inhibits transmission of heat from the valve body to the actuator 22 .
- the actuation tube 32 is cylindrical and hollow. Air disposed and flowing through the hollow actuation tube inhibits the transfer of thermal energy from the exhaust pipe 12 .
- the actuator 22 includes a first pull coil 21 and a second hold coil 25 .
- the first pull coil and the second hold coil 25 are of differing configurations to provide differing magnitudes of force.
- the first pull coil 21 provides a higher force than the second hold coil 25 .
- the actuator 22 must exert sufficient force to overcome pressures biasing the valve plate 24 toward the open position from the exhaust flow 16 .
- the first pull coil 21 produces a force to initiate movement of the valve plate 24 against the exhaust flow 16 .
- the second hold coil 25 produces less force than the first pull coil 21 and is of a lesser strength to utilize less power.
- the use of a reduced force coil provided by the second hold coil 25 is possible because maintaining the position of the valve plate 24 once the initial forces of the exhaust flow 16 are overcome are lower.
- a worker with the benefit of this disclosure will recognize that other actuator configuration can be used to control the valve plate 24 .
- the support housing 38 encloses a clevis assembly 42 .
- the clevis assembly 42 links the actuator 22 with the actuation tube 32 .
- the actuator 22 includes a linear member 27 extendable from the actuator 22 .
- a spring 52 is disposed to bias the linear member 27 towards a position that causes the valve plate 24 to move to its most open position. The spring 52 provides a default position in which the exhaust valve assembly 11 will move in the event of an actuator malfunction.
- the clevis assembly 42 includes a clevis 44 attached to the linear member 27 .
- the clevis 44 moves linearly in response to movement of the linear member 27 .
- a lever arm 50 is attached and fixed to the actuation tube 32 . Movement of the lever arm 50 causes rotation of the actuation tube 32 .
- the lever arm 50 includes a slot 48 .
- a pivot 46 connects the clevis 44 with the lever arm 50 . The movement of the pivot 46 within the slot 48 enables radial movement of the lever 50 in response to linear movement of the linear member 27 and clevis 44 .
- Slot 48 is required to allow the radial movement of the lever 50 about the axis of rotation 23 .
- the clevis assembly 42 is only one possible link configuration within the contemplation of this invention. A worker skilled in the art with the benefit of this disclosure would understand that other configurations for converting movement of the actuator 22 to rotation of the actuation tube 32 are suitable for use with this invention.
- valve neck 20 is shown with a first end 34 attached to the valve body 14 .
- a second end 36 is attached to the support housing 38 .
- the valve neck 20 and support housing 38 both include cross-sections 37 , 39 disposed in a direction transverse to the exhaust pipe 12 .
- the cross-section 37 of the valve neck 12 transverse to the exhaust pipe is smaller than the cross-section 39 of the support housing 38 in a direction transverse to the exhaust pipe 12 .
- the support housing 38 includes the plate 40 .
- the plate 40 also acts as a secondary heat shield between the actuator 22 and the exhaust pipe 12 . This is in addition to the heat shield 18 that is wrapped at least partially around the exhaust tube 12 .
- the actuator 22 is partially exposed to the elements. This exposure provides some cooling benefits to the actuator 22 .
- Moving parts such as the clevis assembly 42 and the linear member 27 of the actuator 22 are housed within the support housing 38 .
- the support housing 38 encloses the clevis assembly 42 and the moving parts of the actuator 27 to prevent debris and other contaminants from fouling the system.
- the exhaust system 10 is mounted to the under carriage of a vehicle. This is an especially hostile environment for most devices.
- the support housing 38 necessarily protects the moving parts from contamination and debris that can foul and damage the operating components of the exhaust valve assembly 11 .
- the actuator 22 is partially exposed it is shielded by the plate 40 from heat radiating from the exhaust pipe 12 .
- an exhaust valve assembly 11 ′ includes a rotary actuator 56 .
- the rotary actuator 56 is attached to rotate the actuation shaft 32 .
- a torsion spring 58 is attached to the actuation shaft 32 to bias the rotary actuator 56 and actuation shaft 32 toward a position causing the valve plate 24 to move to the most open position.
- a worker having the benefit of this disclosure would understand that other electric actuators could be used to move the valve plate 24 .
- the actuator 22 is also isolated from heat emanating from the exhaust pipe 12 by the tubular portion 52 of the valve neck 20 . Isolation of the actuator 22 from heat emitted by the exhaust pipe 12 enables the utilization of the electric actuator 22 .
- the exhaust valve assembly 11 of this invention provides a durable, cost effective means of conditioning exhaust noises for variable displacement engines.
Abstract
An exhaust system for a motor vehicle having a variable displacement engine includes an exhaust valve assembly that is moveable between an open position and a position blocking at least some of the exhaust gases. The blocking of some the exhaust gases increases backpressure that reflects sound waves. The reflection of sound waves provides for the conditioning of noises eminating from the exhaust system. The exhaust valve assembly utilizes an electric actuator. The exhaust valve assembly includes heat insulation features for isolating the electric actuator from heat radiating from the exhaust pipe.
Description
- This invention generally relates to an exhaust system for a motor vehicle having a variable displacement engine, and specifically to an exhaust valve disposed within the exhaust system for controlling noise emissions from the exhaust system.
- A variable displacement engine controls actuation of specific cylinders within an engine. Typically, all cylinders of an multiple cylinder engine are providing power at all times during operation of the vehicle. Under some driving conditions, power produced from all cylinders is not required to propel the vehicle. The variable displacement engine shuts down some of the cylinders to conserve fuel and increase gas mileage. During periods of low engine demand only half of the cylinders operate to propel the vehicle. The selective actuation of engine cylinders provides the most noticeable improvements in fuel efficiencies for larger vehicles with larger engines.
- Selective actuation of specific cylinders of an engine produces an undesirable side effect. The change in engine displacement alters sound emitted from the exhaust system. Typically larger engines are installed in larger more expensive vehicles. Consumers purchasing such vehicles have certain performance expectations. During operation of the vehicle with a reduced number of cylinders the sound emitted from the exhaust system may not convey the desired sound expected by the consumer.
- It is known to provide a valve within an exhaust system to reflect a portion of exhaust flow back through the engine to condition sounds from the exhaust system. Actuation of the valve is provided by a vacuum powered actuator. The vacuum powered actuator utilizes vacuum supplied by the engine through flexible hoses or tubes routed under the vehicle. The underside of a vehicle is a particularly harsh environment. Disadvantageously, the flexible hoses used to supply vacuum to the actuator become brittle and crack with age resulting in vacuum leaks and malfunction of the actuator.
- Accordingly, it is desirable to develop a system for conditioning noise from an exhaust system to provide a consistent desired noise from the engine regardless of changes in engine displacement with improved dependability.
- This invention is an exhaust system for a motor vehicle including an exhaust valve that is actuatable to block a portion of an exhaust pipe to reflect sound waves to condition sound emitted from the exhaust system.
- The exhaust valve of this invention includes a valve plate moveable about an axis within a valve body. The valve body is disposed within an exhaust pipe before or after a muffler. The placement of the valve body is dependent on the desired sound of the exhaust system. The valve plate is actuated by an electric actuator mounted within a housing.
- The housing for the actuator is supported a distance from the exhaust pipe by a valve neck. The valve neck is a tubular member having flanges at each end. The tubular configuration of the valve neck reduces the amount of thermal energy transmitted from the exhaust pipe to the housing. Electric actuators are dependable and relatively inexpensive, and are therefore more desirable than alternatively powered actuators. The reduction in thermal conduction between the valve body and the support housing prevents a substantial amount of heat from radiating to the electric actuator. The exhaust system of a vehicle produces high temperatures that present a challenge to the use of an electric actuator. It is for this reason that the exhaust valve of this invention includes features that isolate the electric actuator from thermal energy produced by the exhaust pipe.
- Accordingly, the exhaust valve assembly of this invention utilizes an electric actuator to provide conditioning of noise emitted from the exhaust system to provide a consistent desired sound regardless of changes in engine displacement.
- The various features and advantages of this invention will become apparent to those skilled in the art from the following detailed description of the currently preferred embodiment. The drawings that accompany the detailed description can be briefly described as follows:
-
FIG. 1 is a cut away view of an exhaust valve assembly according to this invention; -
FIG. 2 is a cross sectional view of the exhaust valve assembly according to this invention; -
FIG. 3 is a cut away view of the support housing and actuator according to this invention; -
FIG. 4 is a top cut away view of the exhaust valve of this invention; -
FIG. 5A a top cut away view of an exhaust valve according to this invention with a rotary actuator; and -
FIG. 5B is a side view of the rotary actuator. - Referring to
FIG. 1 , anexhaust system 10 includes anexhaust pipe 12.Exhaust gases 16 flow through theexhaust pipe 12 after being discharged from combustion cylinders of an engine. Theexhaust gases 16 resonate through theexhaust pipe 12 to emit a distinctive sound. The sound differs with the displacement of the engine. In applications where the engine provides variable displacement by selectively actuating and de-actuating cylinders depending on the driving conditions, the noise emanating from theexhaust system 10 varies in response to changes in displacement. It is desirable for sounds emanating from theexhaust system 10 to have a consistent sound regardless of the displacement of the engine. To provide this consistent sound, anexhaust valve assembly 11 is actuated to change the function of the exhaust system dependent upon engine displacement. - An
exhaust valve assembly 11 is disposed within theexhaust system 12. Theexhaust valve assembly 11 includes avalve body 14 that is installed within theexhaust pipe 12. Thevalve body 14 houses avalve plate 24 that rotates about an axis ofrotation 23 between an open and closed position. In the open position the valve plate does not block a noticeable portion ofexhaust flow 16. In the closed position, thevalve plate 24 preferably blocks between 75% and 90% of theexhaust flow 16. As appreciated, the specific amount of exhaust flow blocked by thevalve plate 24 is tailored to a specific application to produce the desired consistent sound. The specific portion ofexhaust flow 16 blocked by thevalve plate 24 provides control of sound emitted from theexhaust system 10. - Partially blocking the flow of
exhaust 16 through theexhaust pipe 12 creates an increase in backpressure. The increase in backpressure reflects sound waves back within theexhaust system 10. Reflecting the sound waves provides for the control of sounds from theexhaust system 10. Preferably, the sound of theexhaust system 10 is controlled to duplicate the sounds of the engine at the largest displacement regardless of the actual displacement at which the engine is operating. - The
exhaust valve 11 of this invention includes anelectric actuator 22. Theelectric actuator 22 is provided to provide the mechanical force for operation of theexhaust valve assembly 11. As appreciated electric actuators are durable and have relatively long operational life. Further, electric actuators are easily integrated into current vehicle configurations. Theelectric actuator 22 is housed within asupport housing 38. Thesupport housing 38 is spaced a distance from thevalve body 14 by avalve neck 20. Thevalve neck 20 includes afirst flange 26 attached to thevalve body 14 bybolts 28. Between theflange 26 andbolts 28 areseals 30. Theseals 30 thermally isolate thevalve neck 20 from thevalve body 14. - A
heat shield 18 is attached to theexhaust pipe 12 bystraps 19 between theexhaust 12 and theactuator 22. Theheat shield 18 is spaced a distance from thepipe 12 to create an air space 17 (FIG. 2 ) that aids in shielding heat from being emitted toward theactuator 22. - Referring to
FIG. 2 , theexhaust valve assembly 11 is shown in cross section such that theheat shield 18 can be seen spaced apart from theexhaust pipe 12. Thespace 17 between theheat shield 18 andexhaust pipe 12 reduces radiant heat emitted from theexhaust pipe 12 toward theactuator 22. - The
valve neck 20 includes thefirst flange 26 that is attached to thevalve body 14. Thefirst flange 26 andbolts 28 includeseals 30 disposed on either side of thefirst flange 26. Theseals 30 inhibit conduction of thermal energy into thevalve neck 20. Thevalve neck 20 includes atubular portion 54. Thetubular portion 54 substantially reduces the amount of heat transmitted from theexhaust pipe 12 to thesupport housing 38. Thesupport housing 38 includes aplate 40 disposed between the actuator 22 and theexhaust pipe 12. - An
actuation tube 32 is attached to thevalve plate 24 and extends through thevalve neck 20. Theactuation tube 32 is hollow and rotates about the axis ofrotation 23. Rotation of theactuation tube 32 is accomplished by linear movement of theactuator 22. The configuration of theactuation tube 32 also inhibits transmission of heat from the valve body to theactuator 22. Theactuation tube 32 is cylindrical and hollow. Air disposed and flowing through the hollow actuation tube inhibits the transfer of thermal energy from theexhaust pipe 12. - The
actuator 22 includes afirst pull coil 21 and asecond hold coil 25. The first pull coil and thesecond hold coil 25 are of differing configurations to provide differing magnitudes of force. Thefirst pull coil 21 provides a higher force than thesecond hold coil 25. Theactuator 22 must exert sufficient force to overcome pressures biasing thevalve plate 24 toward the open position from theexhaust flow 16. Thefirst pull coil 21 produces a force to initiate movement of thevalve plate 24 against theexhaust flow 16. Thesecond hold coil 25 produces less force than thefirst pull coil 21 and is of a lesser strength to utilize less power. The use of a reduced force coil provided by thesecond hold coil 25 is possible because maintaining the position of thevalve plate 24 once the initial forces of theexhaust flow 16 are overcome are lower. A worker with the benefit of this disclosure will recognize that other actuator configuration can be used to control thevalve plate 24. - Referring to
FIG. 3 , thesupport housing 38 encloses aclevis assembly 42. The clevis assembly 42 links theactuator 22 with theactuation tube 32. Theactuator 22 includes alinear member 27 extendable from theactuator 22. Aspring 52 is disposed to bias thelinear member 27 towards a position that causes thevalve plate 24 to move to its most open position. Thespring 52 provides a default position in which theexhaust valve assembly 11 will move in the event of an actuator malfunction. - The
clevis assembly 42 includes aclevis 44 attached to thelinear member 27. Theclevis 44 moves linearly in response to movement of thelinear member 27. Alever arm 50 is attached and fixed to theactuation tube 32. Movement of thelever arm 50 causes rotation of theactuation tube 32. Thelever arm 50 includes aslot 48. Apivot 46 connects theclevis 44 with thelever arm 50. The movement of thepivot 46 within theslot 48 enables radial movement of thelever 50 in response to linear movement of thelinear member 27 andclevis 44.Slot 48 is required to allow the radial movement of thelever 50 about the axis ofrotation 23. As appreciated theclevis assembly 42 is only one possible link configuration within the contemplation of this invention. A worker skilled in the art with the benefit of this disclosure would understand that other configurations for converting movement of theactuator 22 to rotation of theactuation tube 32 are suitable for use with this invention. - Referring to
FIG. 4 , thevalve neck 20 is shown with afirst end 34 attached to thevalve body 14. Asecond end 36 is attached to thesupport housing 38. Thevalve neck 20 andsupport housing 38 both includecross-sections exhaust pipe 12. Thecross-section 37 of thevalve neck 12 transverse to the exhaust pipe is smaller than thecross-section 39 of thesupport housing 38 in a direction transverse to theexhaust pipe 12. Thesupport housing 38 includes theplate 40. Theplate 40 also acts as a secondary heat shield between the actuator 22 and theexhaust pipe 12. This is in addition to theheat shield 18 that is wrapped at least partially around theexhaust tube 12. Theactuator 22 is partially exposed to the elements. This exposure provides some cooling benefits to theactuator 22. - Moving parts such as the
clevis assembly 42 and thelinear member 27 of theactuator 22 are housed within thesupport housing 38. Thesupport housing 38 encloses theclevis assembly 42 and the moving parts of theactuator 27 to prevent debris and other contaminants from fouling the system. As appreciated theexhaust system 10 is mounted to the under carriage of a vehicle. This is an especially hostile environment for most devices. Thesupport housing 38 necessarily protects the moving parts from contamination and debris that can foul and damage the operating components of theexhaust valve assembly 11. Although theactuator 22 is partially exposed it is shielded by theplate 40 from heat radiating from theexhaust pipe 12. - Referring to
FIGS. 5A and 5B , anexhaust valve assembly 11′ according to this invention includes arotary actuator 56. Therotary actuator 56 is attached to rotate theactuation shaft 32. Atorsion spring 58 is attached to theactuation shaft 32 to bias therotary actuator 56 andactuation shaft 32 toward a position causing thevalve plate 24 to move to the most open position. As appreciated, a worker having the benefit of this disclosure would understand that other electric actuators could be used to move thevalve plate 24. - The
actuator 22 is also isolated from heat emanating from theexhaust pipe 12 by thetubular portion 52 of thevalve neck 20. Isolation of the actuator 22 from heat emitted by theexhaust pipe 12 enables the utilization of theelectric actuator 22. Theexhaust valve assembly 11 of this invention provides a durable, cost effective means of conditioning exhaust noises for variable displacement engines. - The foregoing description is exemplary and not just a material specification. The invention has been described in an illustrative manner, and should be understood that the terminology used is intended to be in the nature of words of description rather than of limitation. Many modifications and variations of the present invention are possible in light of the above teachings. The preferred embodiments of this invention have been disclosed, however, one of ordinary skill in the art would recognize that certain modifications are within the scope of this invention. It is understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described. For that reason the following claims should be studied to determine the true scope and content of this invention.
Claims (23)
1. An exhaust valve assembly comprising:
a valve plate movable within an exhaust pipe between an open and a closed position; and
an electric actuator for moving said valve plate.
2. The assembly as recited in claim 1 , comprising a valve neck for supporting said electric actuator a distance from said exhaust pipe.
3. The assembly as recited in claim 2 , comprising a support housing mounted to said valve neck for supporting said electric actuator.
4. The assembly as recited in claim 3 , wherein said support housing includes a plate disposed between said electric actuator and said exhaust pipe for shielding said actuator from heal
5. The assembly as recited in claim 3 , wherein said valve neck comprises a tubular cross section having a first mount adjacent a first end for attachment to an exhaust pipe and a second mount adjacent a second end opposite said first end for supporting said support housing.
6. The assembly as recited in claim 3 , wherein said valve neck comprises a cross-section smaller in a direction transverse to said exhaust pipe than a cross section of said support housing transverse to said exhaust pipe.
7. The assembly as recited in claim 1 , wherein said electric actuator compromises a linearly movable element.
8. The assembly as recited in claim 1 , wherein said electric actuator comprises a rotatably movable element.
9. The assembly as recited in claim 1 , comprising an actuation tube having a tubular cross section rotatable by said electric actuator for moving said valve plate.
10-13. (canceled)
14. An exhaust system for a motor vehicle comprising:
an exhaust pipe directing exhaust gases; and
an exhaust valve assembly for increasing a back pressure within said exhaust pipe for reflecting sound waves, said exhaust valve assembly comprising a valve plate movable about an axis of rotation for blocking a portion of exhaust gases flowing through said exhaust pipe, and an electric actuator for moving said valve plate.
15. The system as recited in claim 14 , comprising a valve neck disposed about said axis of rotation for supporting and spacing said electric actuator a distance from said exhaust pipe.
16. The system as recited in claim 15 , comprising a support housing supported by said valve neck, wherein said valve neck comprises a cross-section transverse to said exhaust pipe smaller than a cross-section of said support housing in a direction transverse to said exhaust pipe.
17. The system as recited in claim 16 , wherein said support housing comprises a plate disposed between said electric actuator and said exhaust pipe for shielding said electric actuator from heat emitted from said exhaust pipe.
18. The system as recited in claim 14 , comprising an actuation tube having a tubular cross section rotatable by said electric actuator for moving said valve plate.
19. The system as recited in claim 14 , wherein said valve plate creates a tuning effect replicating an exhaust pipe of a diameter smaller than said exhaust pipe.
20. The system as recited in claim 14 , comprising an actuation tube having a solid shaft rotatable by said electric actuator for moving said valve plate.
21. The system as recited in claim 14 , comprising an actuation tube having a hollow shaft rotatable by said electric actuator for moving said valve plate.
22. The system as recited in claim 14 , comprising an actuation tube having a solid portion and a hollow portion rotatable by said electric actuator For moving said valve plate.
23. The system as recited in claim 1 wherein said electric actuator includes a first pull coil for initiating movement of said valve plate and a second hold coil for holding said valve plate in a desired position.
24. The system as recited in claim 14 wherein said electric actuator includes a first pull coil for initiating movement of said valve plate and a second hold coil for holding said valve plate in a desired position.
25. The system as recited in claim 5 wherein said valve plate is rotatable about an axis and said valve neck is mounted about said axis.
26. The system as recited in claim 15 , wherein said valve neck includes a hollow tube having a first mount adjacent a first end for attachment to said exhaust pipe and a second mount adjacent a second end opposite said first end for supporting said electric actuator.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/724,268 US20050109024A1 (en) | 2003-11-26 | 2003-11-26 | Electrically controlled exhaust valve |
PCT/US2004/034168 WO2005056326A1 (en) | 2003-11-26 | 2004-10-15 | Electrically controlled exhaust valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/724,268 US20050109024A1 (en) | 2003-11-26 | 2003-11-26 | Electrically controlled exhaust valve |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050109024A1 true US20050109024A1 (en) | 2005-05-26 |
Family
ID=34592458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/724,268 Abandoned US20050109024A1 (en) | 2003-11-26 | 2003-11-26 | Electrically controlled exhaust valve |
Country Status (2)
Country | Link |
---|---|
US (1) | US20050109024A1 (en) |
WO (1) | WO2005056326A1 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050081516A1 (en) * | 2003-08-27 | 2005-04-21 | Honda Motor Co., Ltd. | Exhaust control system for motorcycle |
US20070283680A1 (en) * | 2004-05-12 | 2007-12-13 | Willats Robin H | Exhaust Processor And Associated Method |
US20080104950A1 (en) * | 2005-02-03 | 2008-05-08 | Herve Palanchon | Exhaust Gas Heat Exchanger, Especially for Motor Vehicles |
US20080115748A1 (en) * | 2006-11-21 | 2008-05-22 | Arvin Technologies, Inc. | Exhaust valve assembly with intermediate position |
US20080116404A1 (en) * | 2006-11-21 | 2008-05-22 | Arvin Technologies, Inc. | Hybrid exhaust valve assembly |
US20100025146A1 (en) * | 2008-07-31 | 2010-02-04 | Shu-Li Ho | Baffle plate operating mechanism for muffler |
US20100031938A1 (en) * | 2008-02-04 | 2010-02-11 | Kamtec Inc. | Exhaust gas recirculation valve for vehicle |
US20130037005A1 (en) * | 2010-02-04 | 2013-02-14 | Avl List Gmbh | Internal combustion engine haivng cylinder deactivation |
DE102011111471A1 (en) * | 2011-08-23 | 2013-02-28 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Exhaust system of an internal combustion engine with means for heat recovery, and method for operating the same |
US8465107B2 (en) | 2011-06-15 | 2013-06-18 | Arvinmeritor Technology, Llc | Regenerative air brake module |
DE102014017524A1 (en) | 2013-11-30 | 2015-06-03 | Kohlhage Automotive GmbH & Co. KG | Valve unit, such as exhaust flap unit for motor vehicles |
US9120474B2 (en) | 2011-06-15 | 2015-09-01 | Arvinmeritor Technology, Llc | Mechanical bypass valve for regenerative air brake module |
US20160024998A1 (en) * | 2013-03-15 | 2016-01-28 | Borgwarner Inc. | A compact rotary wastegate valve |
US9500113B2 (en) | 2014-03-28 | 2016-11-22 | Honda Motor Co., Ltd. | Aftermarket exhaust detection |
US20170067380A1 (en) * | 2015-09-04 | 2017-03-09 | John Cantrell | Exhaust Assembly |
DE102020129151A1 (en) | 2020-11-05 | 2022-05-05 | ATJ Automotive GmbH | Exhaust system for motor vehicles |
DE102013111003B4 (en) | 2012-10-31 | 2022-06-15 | Faurecia Emissions Control Technologies, Usa, Llc | Hybrid valve assembly, method of controlling a hybrid valve assembly, and valve assembly |
CN114718713A (en) * | 2022-04-09 | 2022-07-08 | 温州合泰汽车传动系统有限公司 | Heat shield for automobile exhaust pipe valve |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2753147A (en) * | 1953-05-14 | 1956-07-03 | Welge Victor | Valve for exhaust braking |
US4373330A (en) * | 1981-06-29 | 1983-02-15 | General Motors Corporation | Diesel engine dual path exhaust cleaner and burner system |
US5163295A (en) * | 1991-09-09 | 1992-11-17 | Eaton Corporation | Controlling exhaust gas recirculation in a pressure boosted internal combustion engine |
US5388408A (en) * | 1993-10-01 | 1995-02-14 | Lawrence-Keech Inc. | Exhaust system for internal combustion engines |
US5638926A (en) * | 1994-06-27 | 1997-06-17 | United States Gear Corporation | Vehicle engine brake |
US6000222A (en) * | 1997-12-18 | 1999-12-14 | Allied Signal Inc. | Turbocharger with integral turbine exhaust gas recirculation control valve and exhaust gas bypass valve |
US20020185893A1 (en) * | 2001-06-06 | 2002-12-12 | Honda Giken Kogyo Kabushiki Kaisha | Heat insulator apparatus for vehicle floor |
US6739579B1 (en) * | 1999-12-29 | 2004-05-25 | Visteon Global Technologies, Inc. | Exhaust valve for combustion engines |
US20040206564A1 (en) * | 2003-03-31 | 2004-10-21 | Toshihisa Nagashii | Motorcycle |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3524952B2 (en) * | 1994-03-15 | 2004-05-10 | 富士通テン株式会社 | Noise control device |
JP2002155741A (en) * | 2000-09-11 | 2002-05-31 | Calsonic Kansei Corp | Control muffler |
-
2003
- 2003-11-26 US US10/724,268 patent/US20050109024A1/en not_active Abandoned
-
2004
- 2004-10-15 WO PCT/US2004/034168 patent/WO2005056326A1/en active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2753147A (en) * | 1953-05-14 | 1956-07-03 | Welge Victor | Valve for exhaust braking |
US4373330A (en) * | 1981-06-29 | 1983-02-15 | General Motors Corporation | Diesel engine dual path exhaust cleaner and burner system |
US5163295A (en) * | 1991-09-09 | 1992-11-17 | Eaton Corporation | Controlling exhaust gas recirculation in a pressure boosted internal combustion engine |
US5388408A (en) * | 1993-10-01 | 1995-02-14 | Lawrence-Keech Inc. | Exhaust system for internal combustion engines |
US5638926A (en) * | 1994-06-27 | 1997-06-17 | United States Gear Corporation | Vehicle engine brake |
US6000222A (en) * | 1997-12-18 | 1999-12-14 | Allied Signal Inc. | Turbocharger with integral turbine exhaust gas recirculation control valve and exhaust gas bypass valve |
US6739579B1 (en) * | 1999-12-29 | 2004-05-25 | Visteon Global Technologies, Inc. | Exhaust valve for combustion engines |
US20020185893A1 (en) * | 2001-06-06 | 2002-12-12 | Honda Giken Kogyo Kabushiki Kaisha | Heat insulator apparatus for vehicle floor |
US20040206564A1 (en) * | 2003-03-31 | 2004-10-21 | Toshihisa Nagashii | Motorcycle |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050081516A1 (en) * | 2003-08-27 | 2005-04-21 | Honda Motor Co., Ltd. | Exhaust control system for motorcycle |
US7409824B2 (en) * | 2003-08-27 | 2008-08-12 | Honda Motor Co., Ltd. | Exhaust control system for motorcycle |
US20070283680A1 (en) * | 2004-05-12 | 2007-12-13 | Willats Robin H | Exhaust Processor And Associated Method |
US20080104950A1 (en) * | 2005-02-03 | 2008-05-08 | Herve Palanchon | Exhaust Gas Heat Exchanger, Especially for Motor Vehicles |
US20080115748A1 (en) * | 2006-11-21 | 2008-05-22 | Arvin Technologies, Inc. | Exhaust valve assembly with intermediate position |
US20080116404A1 (en) * | 2006-11-21 | 2008-05-22 | Arvin Technologies, Inc. | Hybrid exhaust valve assembly |
US7536990B2 (en) * | 2006-11-21 | 2009-05-26 | Emcon Technologies Llc | Hybrid exhaust valve assembly |
US8683789B2 (en) * | 2006-11-21 | 2014-04-01 | Faurecia Emissions Control Technologies | Exhaust valve assembly with intermediate position |
US20100031938A1 (en) * | 2008-02-04 | 2010-02-11 | Kamtec Inc. | Exhaust gas recirculation valve for vehicle |
US7971578B2 (en) * | 2008-02-04 | 2011-07-05 | Kamtec Inc. | Exhaust gas recirculation valve for vehicle |
US20100025146A1 (en) * | 2008-07-31 | 2010-02-04 | Shu-Li Ho | Baffle plate operating mechanism for muffler |
US20130037005A1 (en) * | 2010-02-04 | 2013-02-14 | Avl List Gmbh | Internal combustion engine haivng cylinder deactivation |
US8465107B2 (en) | 2011-06-15 | 2013-06-18 | Arvinmeritor Technology, Llc | Regenerative air brake module |
US9120474B2 (en) | 2011-06-15 | 2015-09-01 | Arvinmeritor Technology, Llc | Mechanical bypass valve for regenerative air brake module |
DE102011111471A1 (en) * | 2011-08-23 | 2013-02-28 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Exhaust system of an internal combustion engine with means for heat recovery, and method for operating the same |
US9097153B2 (en) | 2011-08-23 | 2015-08-04 | GM Global Technology Operations LLC | Combustion engine exhaust system with device for heat recovery, and method for operating such an exhaust system |
DE102013111003B4 (en) | 2012-10-31 | 2022-06-15 | Faurecia Emissions Control Technologies, Usa, Llc | Hybrid valve assembly, method of controlling a hybrid valve assembly, and valve assembly |
US20160024998A1 (en) * | 2013-03-15 | 2016-01-28 | Borgwarner Inc. | A compact rotary wastegate valve |
DE102014017524A1 (en) | 2013-11-30 | 2015-06-03 | Kohlhage Automotive GmbH & Co. KG | Valve unit, such as exhaust flap unit for motor vehicles |
WO2015078431A1 (en) | 2013-11-30 | 2015-06-04 | Kohlhage Automotive GmbH & Co. KG | Valve unit, such as an exhaust-gas flap unit, for motor vehicles |
US9500113B2 (en) | 2014-03-28 | 2016-11-22 | Honda Motor Co., Ltd. | Aftermarket exhaust detection |
US20170067380A1 (en) * | 2015-09-04 | 2017-03-09 | John Cantrell | Exhaust Assembly |
DE102020129151A1 (en) | 2020-11-05 | 2022-05-05 | ATJ Automotive GmbH | Exhaust system for motor vehicles |
DE102020129151B4 (en) | 2020-11-05 | 2022-08-18 | ATJ Automotive GmbH | Exhaust system for motor vehicles |
CN114718713A (en) * | 2022-04-09 | 2022-07-08 | 温州合泰汽车传动系统有限公司 | Heat shield for automobile exhaust pipe valve |
Also Published As
Publication number | Publication date |
---|---|
WO2005056326A1 (en) | 2005-06-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20050109024A1 (en) | Electrically controlled exhaust valve | |
EP1564384B1 (en) | Electrically controlled in-muffler exhaust valve for use during cylinder deactivation | |
US9376947B2 (en) | Hybrid valve for attenuation of low frequency noise | |
US20170138274A1 (en) | Electric exhaust gas valve device | |
US5723829A (en) | Muffler assembly of internal combustion engine | |
US20080236680A1 (en) | Passive valve for attenuation of low frequency noise | |
US8950731B2 (en) | Exhaust valve structure | |
EP2199551B1 (en) | Exhaust system of an internal combustion engine | |
US10408125B2 (en) | Valve drive apparatus and supercharger having the same | |
CN107763228B (en) | Electric valve | |
US7182171B2 (en) | Muffler with variable acoustic properties | |
EP1447545B2 (en) | Valve for an exhaust pipe | |
JP2006214405A (en) | Exhaust gas circulating device for internal combustion engine, and valve module for internal combustion engine | |
JP4994498B2 (en) | Drop-in type exhaust gas circulation valve mounting device | |
US20190323611A1 (en) | Valve for exhaust line | |
CN103790676A (en) | Hybrid valve assembly for exhaust system | |
US20190323612A1 (en) | Piloted exhaust line valve and corresponding production method | |
JP2008274893A (en) | Exhaust valve device | |
EP1741882B1 (en) | Variable lift valve operating system for internal combustion engine | |
US20130305712A1 (en) | Actuating device for an exhaust gas turbocharger | |
CZ20022560A3 (en) | Arrangement of combustion chamber, particularly for hating equipment | |
JP2001221069A (en) | Intake shutter device | |
CN114961984A (en) | Wastegate assembly for a turbocharger | |
JP2007032363A (en) | Actuator cooling structure in lift-variable valve operating device of internal combustion engine | |
JP2019210871A (en) | Exhaust passage opening/closing device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ARVIN TECHNOLOGIES, INC., MICHIGAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NOHL, JOHN;WOERNER, DAVID;SPEER, GREGG;REEL/FRAME:014777/0775 Effective date: 20031125 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |