JPS569618A - Four-stroke multicylinder engine - Google Patents

Four-stroke multicylinder engine

Info

Publication number
JPS569618A
JPS569618A JP8574979A JP8574979A JPS569618A JP S569618 A JPS569618 A JP S569618A JP 8574979 A JP8574979 A JP 8574979A JP 8574979 A JP8574979 A JP 8574979A JP S569618 A JPS569618 A JP S569618A
Authority
JP
Japan
Prior art keywords
combustion chamber
combustion
exhaust
atmosphere
engine
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.)
Pending
Application number
JP8574979A
Other languages
Japanese (ja)
Inventor
Hiromitsu Matsumoto
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha 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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP8574979A priority Critical patent/JPS569618A/en
Publication of JPS569618A publication Critical patent/JPS569618A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Exhaust Gas After Treatment (AREA)

Abstract

PURPOSE: To prevent unstable combustion caused by a reverse flow of the atmosphere from an exhaust passage into a combustion chamber by providing near a suction valve a blast nozzle biased to one side with respect to a cylinder axis in a combustion chamber.
CONSTITUTION: In a four-cycle multicylinder engine, a secondary air passage with a check valve 26 in it opens into an exhaust port 2 to lead the atmosphere into the exhaust port in aid of pulsated exhaust pressure. A blast nozzle 36 eccentrically faced to a cylinder axis in each combustion chamber 15 is formed near a suction valve 17 inside a suction port 5. The blast nozzles 36 for cylinders each are connected to an auxiliary passage 37 to be communicated with each other. Under low load operation of an engine where much atmosphere carried into the exhaust passage 2 to flow back into the combustion engine 15, high speed suction current supplied from the blast nozzle is swirled around the axis of a cylinder 12 to promote combustion. Thereby feeding secondary air improves unstable propagation of flame in the combustion chamber 15.
COPYRIGHT: (C)1981,JPO&Japio
JP8574979A 1979-07-05 1979-07-05 Four-stroke multicylinder engine Pending JPS569618A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8574979A JPS569618A (en) 1979-07-05 1979-07-05 Four-stroke multicylinder engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8574979A JPS569618A (en) 1979-07-05 1979-07-05 Four-stroke multicylinder engine

Publications (1)

Publication Number Publication Date
JPS569618A true JPS569618A (en) 1981-01-31

Family

ID=13867492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8574979A Pending JPS569618A (en) 1979-07-05 1979-07-05 Four-stroke multicylinder engine

Country Status (1)

Country Link
JP (1) JPS569618A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131721A (en) * 1983-01-19 1984-07-28 Honda Motor Co Ltd Exhaust-gas purifying apparatus for internal-combustion engine
JP2009156223A (en) * 2007-12-27 2009-07-16 Yamaha Motor Co Ltd Secondary air supply system and vehicle
JP2009156222A (en) * 2007-12-27 2009-07-16 Yamaha Motor Co Ltd Secondary air supply system and vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59131721A (en) * 1983-01-19 1984-07-28 Honda Motor Co Ltd Exhaust-gas purifying apparatus for internal-combustion engine
JPH0514084B2 (en) * 1983-01-19 1993-02-24 Honda Motor Co Ltd
JP2009156223A (en) * 2007-12-27 2009-07-16 Yamaha Motor Co Ltd Secondary air supply system and vehicle
JP2009156222A (en) * 2007-12-27 2009-07-16 Yamaha Motor Co Ltd Secondary air supply system and vehicle

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