Muffler for internal combustion engine

Abstract

Abstract PURPOSE:To reduce the discharge of black smoke in a muffler provided therein with at least one expansion chamber into which an inlet pipe is inserted, by forming a plurality of openings in the peripheral wall of the inlet pipe such that the flow rate of exhaust gas is decreased in the vicinity of the inner peripheral wall of the expansion chamber. CONSTITUTION:End plates 14, 16 are secured to both ends of the body 12 of a muffler 10 having an elliptic cross-sectioned shape, by beig fastened at their peripheries. An exhaust pipe 18 is inserted and secured in a flanged circular hole which is formed in the center section of the left end plate 14. An outlet pipe 20 is inserted and secured in a circular hole similarly formed in the right end plate 16. The inside of the body 12 is divided into an expansion chamber 24 and a low frequency resonating chamber 26 by a partition wall 22 which supports the left end of the outlet pipe 20 and a low frequency resonating pipe 28. Further a plurality of openings 34 is formed in an inlet pipe 30 which extends in the expansion chamber 24 and is connected to the exhaust pipe 18, in an area in the vicinity of the long axis of the ellipse of the body.

Inventors

• 👤 Shigeru Kamiya
• 👤 茂 神谷
• 👤 Akikazu Kojima
• 👤 昭和 小島
• 👤 Toru Imamura
• 👤 徹 今村

Bibliographic Details