JPS5499826A - Suction equipment of four-stroke internal combustion engine - Google Patents

Suction equipment of four-stroke internal combustion engine

Info

Publication number
JPS5499826A
JPS5499826A JP16500378A JP16500378A JPS5499826A JP S5499826 A JPS5499826 A JP S5499826A JP 16500378 A JP16500378 A JP 16500378A JP 16500378 A JP16500378 A JP 16500378A JP S5499826 A JPS5499826 A JP S5499826A
Authority
JP
Japan
Prior art keywords
suction
passage
suction passage
combustion chamber
low load
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
JP16500378A
Other languages
Japanese (ja)
Inventor
Takanori Hayashida
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 JP16500378A priority Critical patent/JPS5499826A/en
Publication of JPS5499826A publication Critical patent/JPS5499826A/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

  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Abstract

PURPOSE: To operate a suction equipment of a 4-stroke internal combustion engine in low load by keeping the velocity of the swirl as high as possible produced in a combustion chamber with less velocity loss of mixture flowing through a throttle valve of a carbureter, an auxiliary throttle valve which closes a suction opening only in low load, and an air vent.
CONSTITUTION: An auxiliary throttle valve 18 which closes a suction passage only in low load is provided in the way from throttle valves 1b, 1c of a carbureter 1 to a suction port 7. The suction passage 15 between those throttle valves is communicat- ed 24 with an air vent 23 which opens by the suction port and is directed towards a combustion chamber. In a cylinder head 4, the communication passage 24 is laid approximately parallel with the suction passage 15 and aside from the axis of the cylinder in a straight line. The suction passage 5 bents as nearing the suction valve 10. The oening of the suction passage near the suction valve 10 is directed towards the combustion chamber 10 so that the bending may reduce the velocity loss.
COPYRIGHT: (C)1979,JPO&Japio
JP16500378A 1978-12-27 1978-12-27 Suction equipment of four-stroke internal combustion engine Pending JPS5499826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16500378A JPS5499826A (en) 1978-12-27 1978-12-27 Suction equipment of four-stroke internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16500378A JPS5499826A (en) 1978-12-27 1978-12-27 Suction equipment of four-stroke internal combustion engine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP52142671A Division JPS5945804B2 (en) 1977-11-30 1977-11-30 4-cycle engine intake system

Publications (1)

Publication Number Publication Date
JPS5499826A true JPS5499826A (en) 1979-08-07

Family

ID=15803988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16500378A Pending JPS5499826A (en) 1978-12-27 1978-12-27 Suction equipment of four-stroke internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5499826A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278732A (en) * 1988-09-16 1990-03-19 Nippon Carbureter Co Ltd Air intake control valve device for engine
JPH0295730A (en) * 1988-09-30 1990-04-06 Nippon Carbureter Co Ltd Intake control valve system for engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278732A (en) * 1988-09-16 1990-03-19 Nippon Carbureter Co Ltd Air intake control valve device for engine
JPH0295730A (en) * 1988-09-30 1990-04-06 Nippon Carbureter Co Ltd Intake control valve system for engine

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