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JPS55125311A - Exhaust pipe for four-stroke engine - Google Patents

Exhaust pipe for four-stroke engine

Info

Publication number
JPS55125311A
JPS55125311A JP3288679A JP3288679A JPS55125311A JP S55125311 A JPS55125311 A JP S55125311A JP 3288679 A JP3288679 A JP 3288679A JP 3288679 A JP3288679 A JP 3288679A JP S55125311 A JPS55125311 A JP S55125311A
Authority
JP
Japan
Prior art keywords
exhaust pipe
tapered
different diameter
muffler
exit side
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.)
Granted
Application number
JP3288679A
Other languages
Japanese (ja)
Other versions
JPS594531B2 (en
Inventor
Tetsuo Sumikura
Seiji Ukai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP3288679A priority Critical patent/JPS594531B2/en
Publication of JPS55125311A publication Critical patent/JPS55125311A/en
Publication of JPS594531B2 publication Critical patent/JPS594531B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Exhaust Silencers (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

PURPOSE: To promote the torque and output of a low and a medium speed area of a car by providing the exit side of an exhaust pipe with the smooth variation of diameters to be called "tapered" or "clubshaped", and setting the effective sectional area of the different diameter part within the area of a proper value.
CONSTITUTION: An exhaust pipe 10 to be used for an autocycle, automobile, or the like is provided with a muffler 3 in the downstream side of exhaust gas, and inserted into the muffler 3 in the end of the exit side. The inserted part of the exhaust pipe 10 in the muffler 3 is constructed into a different diameter part 12 provided with smoothly varied diameters along the longitudinal direction in comparison with a main pipe part 11. This different diameter part 12 is, for example, shaped successively from a tapered part 12a to a club-shaped part 12b in the flow direction of the exhaust gas. As another example, the exit side of the main pipe part 21 is provided with a tapered part 22 smoothly tapered in comparison with the main pipe part 21, and a convergent-cone-shaped exhaust pipe 20 with gradually reduced diameters can be used for the different diameter part.
COPYRIGHT: (C)1980,JPO&Japio
JP3288679A 1979-03-20 1979-03-20 4 cycle engine exhaust pipe Expired JPS594531B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3288679A JPS594531B2 (en) 1979-03-20 1979-03-20 4 cycle engine exhaust pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3288679A JPS594531B2 (en) 1979-03-20 1979-03-20 4 cycle engine exhaust pipe

Publications (2)

Publication Number Publication Date
JPS55125311A true JPS55125311A (en) 1980-09-27
JPS594531B2 JPS594531B2 (en) 1984-01-30

Family

ID=12371352

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3288679A Expired JPS594531B2 (en) 1979-03-20 1979-03-20 4 cycle engine exhaust pipe

Country Status (1)

Country Link
JP (1) JPS594531B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2136042A1 (en) 2008-06-18 2009-12-23 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2136042A1 (en) 2008-06-18 2009-12-23 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system
US8136628B2 (en) 2008-06-18 2012-03-20 Yamaha Hatsudoki Kabushiki Kaisha Exhaust system for motorcycle

Also Published As

Publication number Publication date
JPS594531B2 (en) 1984-01-30

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