USRE14469E - Muffler - Google Patents

Muffler Download PDF

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Publication number
USRE14469E
USRE14469E US RE14469 E USRE14469 E US RE14469E
Authority
US
United States
Prior art keywords
partition
compartment
muffler
casing
exit
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English (en)
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  • This invention relates to devices for silencing the noise of the exhaust gasesof an internal combustion engine or the like, and its object is to accomplish that result by a simple and inexpensive contrivance.
  • Figure 1 is a longitudinal section of my improved muffler
  • Fig. 2 is a cross-section of the same on the line 2-2, Fig. 1.
  • the hollow body 3 is preferably cylindrical with an exit opening 4 in .its up er end.
  • the entrance opening or inlet 5 or the exhaust gases is located in one side of the body near its upper end.
  • Inside the body is a partition 6 which divides the interior of the mufller into an entrance compartment? and an exit compartment 8'.
  • the inlet 5 opens into the compartment 7, and the exit opening 4 leads out of the exit compartment 8,;
  • the partition 6 is rounded out opposite the inlet 5 forming a reception chamber of considerable capacity, but as it passes downwardly it gradually approaches the side of the body of the mufiler and finally becomes a semi-cylindrical Wall concentric with and not far from the side wall of said body.
  • the edges of the partition are at all times united to the walls of the body, so that at the lower end of said artition, which is a little distance from the Bottom 9 of the bod there is an outlet openin 10 0f considerab e length but of slight wi th.
  • the cross-sectional area of the entrance compartment gradually decreases from the reception chamber to the outlet chamber 8.
  • the partition 6 not only divides the interior of the body into two chambers but it also forms in efiect a nozzle gordincreasing the velocity of the exhaust.
  • the operation is as follows: The exhaust gases of the engine enter intermittently at M. None 5 into the comparatively roomy reception chamber and flow from there down through the narrowing entrance compartment 7 through the restricted outlet 10 into the lower end of the much larger exit compartment 8. They enter this at considerable speed, and immediately expand completely or substantially so and pass up and out through the exit opening 4.
  • the curved shape of the partition 6 guides the gases easily and without eddies to the compartment 8.
  • a mufller comprising a casing closed at one end and having an exit opening at the other end, said casing having an inlet opening in one side adjacent the end having the exit opening, and a partition wall which extends from a point between said openings toward the closed end of the casing, terminating short thereof, said partition being rounded out opposite the inlet opening to form with the side wall of the casing a pocket, and gradually *ap roaching the side wall toward the closed en of the casing and at the same time gradually widening out so as to form a long narrow outlet passage between said partition and the side wall.

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