JPS5445407A - 2-cycle engine - Google Patents

2-cycle engine

Info

Publication number
JPS5445407A
JPS5445407A JP11180977A JP11180977A JPS5445407A JP S5445407 A JPS5445407 A JP S5445407A JP 11180977 A JP11180977 A JP 11180977A JP 11180977 A JP11180977 A JP 11180977A JP S5445407 A JPS5445407 A JP S5445407A
Authority
JP
Japan
Prior art keywords
driving
time
refluent
passage
mixed air
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
JP11180977A
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 JP11180977A priority Critical patent/JPS5445407A/en
Publication of JPS5445407A publication Critical patent/JPS5445407A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Landscapes

  • Supercharger (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

PURPOSE: To devise the stabilization at the time of driving at low speeds by leaking part of mixed air from a combustion chamber after an exhaust port has been closed in course of contracting stroke during low speed driving.
CONSTITUTION: In concurrence of forming a mixed air leaking port 36 piercing through the side bulkheads of a cylinder 14 with connecting a mixed air refluent passage 38 to this port 36, said refluent passage 38 makes a combustion chamber 20 conduct with a crankcase 12, and an opening/closing valve 40 is fixed on said refluent passage 38. Said valve 40 is contrived such as to open at the time of idling and low speed driving, and to close at the time of normal driving or output applying driving. This constitution makes it possible to bring it to the same condition as if the contractive ratio may have been brought down in such a way that the contractive pressure had been abated at the time of driving at low speeds or idling, and to improve the stabilization of low speed driving, exhaust emission and drivability
COPYRIGHT: (C)1979,JPO&Japio
JP11180977A 1977-09-17 1977-09-17 2-cycle engine Pending JPS5445407A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11180977A JPS5445407A (en) 1977-09-17 1977-09-17 2-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11180977A JPS5445407A (en) 1977-09-17 1977-09-17 2-cycle engine

Publications (1)

Publication Number Publication Date
JPS5445407A true JPS5445407A (en) 1979-04-10

Family

ID=14570694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11180977A Pending JPS5445407A (en) 1977-09-17 1977-09-17 2-cycle engine

Country Status (1)

Country Link
JP (1) JPS5445407A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158934U (en) * 1981-03-31 1982-10-06
JPS61265321A (en) * 1985-05-20 1986-11-25 Yamaha Motor Co Ltd Combustion chamber of 2-cycle engine
JPS61268820A (en) * 1985-05-22 1986-11-28 Yamaha Motor Co Ltd Combustion chamber of 2-cycle engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57158934U (en) * 1981-03-31 1982-10-06
JPS61265321A (en) * 1985-05-20 1986-11-25 Yamaha Motor Co Ltd Combustion chamber of 2-cycle engine
JPS61268820A (en) * 1985-05-22 1986-11-28 Yamaha Motor Co Ltd Combustion chamber of 2-cycle engine

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