JPS57181929A - Two cycle engine - Google Patents

Two cycle engine

Info

Publication number
JPS57181929A
JPS57181929A JP6629781A JP6629781A JPS57181929A JP S57181929 A JPS57181929 A JP S57181929A JP 6629781 A JP6629781 A JP 6629781A JP 6629781 A JP6629781 A JP 6629781A JP S57181929 A JPS57181929 A JP S57181929A
Authority
JP
Japan
Prior art keywords
piston
passage
section
internal space
fresh 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.)
Granted
Application number
JP6629781A
Other languages
Japanese (ja)
Other versions
JPS59690B2 (en
Inventor
Tatsuichi Tanba
Hidetoshi Kako
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.)
Kawasaki Heavy Industries Ltd
Kawasaki Motors Ltd
Original Assignee
Kawasaki Heavy Industries Ltd
Kawasaki Jukogyo KK
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 Kawasaki Heavy Industries Ltd, Kawasaki Jukogyo KK filed Critical Kawasaki Heavy Industries Ltd
Priority to JP6629781A priority Critical patent/JPS59690B2/en
Publication of JPS57181929A publication Critical patent/JPS57181929A/en
Publication of JPS59690B2 publication Critical patent/JPS59690B2/en
Expired 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/04—Engines with reciprocating-piston pumps; Engines with crankcase pumps with simple crankcase pumps, i.e. with the rear face of a non-stepped working piston acting as sole pumping member in co-operation with the crankcase
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

PURPOSE:To prevent creeps or pitching of a boss section precisely by utilizing an internal space of a hollow piston pin fitted into a piston boss section as a passage of the fresh air and the mixed gas from a pre-pressure chamber to a combustion chamber. CONSTITUTION:A hollow piston pin 8 is fitted into the boss section 7 of a piston 5. A concave section 9 of the piston 5 connects an inlet section 8a of the fresh air and the gas to a crankcase. When the piston 5 reaches the bottom dead point, the compressed mixed gas in the crankcase 6 is fed into a combustion chamber 4 by way of a passage A passing through a main scavenging passage 11 and a passage B passing through the concave section 9, the internal space of the piston pin 8 and a supplementary scavenging passage 10. Therefore, the pin 8 is cooled efficiently because the fresh air and the mixed gas with a low temperature pass through the internal space of the piston pin 8. Thereby, creeps or pitching of the boss section can be prevented precisely.
JP6629781A 1981-04-30 1981-04-30 2 cycle engine Expired JPS59690B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6629781A JPS59690B2 (en) 1981-04-30 1981-04-30 2 cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6629781A JPS59690B2 (en) 1981-04-30 1981-04-30 2 cycle engine

Publications (2)

Publication Number Publication Date
JPS57181929A true JPS57181929A (en) 1982-11-09
JPS59690B2 JPS59690B2 (en) 1984-01-07

Family

ID=13311734

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6629781A Expired JPS59690B2 (en) 1981-04-30 1981-04-30 2 cycle engine

Country Status (1)

Country Link
JP (1) JPS59690B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221445A (en) * 1983-05-28 1984-12-13 Yamaha Motor Co Ltd Two-cycle engine
WO1998057053A1 (en) * 1997-06-11 1998-12-17 Komatsu Zenoah Co. Stratified scavenging two-cycle engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59221445A (en) * 1983-05-28 1984-12-13 Yamaha Motor Co Ltd Two-cycle engine
WO1998057053A1 (en) * 1997-06-11 1998-12-17 Komatsu Zenoah Co. Stratified scavenging two-cycle engine
US6289856B1 (en) 1997-06-11 2001-09-18 Komatsu Zenoah Co., Stratified scavenging two-cycle engine

Also Published As

Publication number Publication date
JPS59690B2 (en) 1984-01-07

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