JPS57186001A - Piston for internal combustion engine - Google Patents

Piston for internal combustion engine

Info

Publication number
JPS57186001A
JPS57186001A JP7118381A JP7118381A JPS57186001A JP S57186001 A JPS57186001 A JP S57186001A JP 7118381 A JP7118381 A JP 7118381A JP 7118381 A JP7118381 A JP 7118381A JP S57186001 A JPS57186001 A JP S57186001A
Authority
JP
Japan
Prior art keywords
piston
cam
thetam
connecting rod
internal combustion
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
JP7118381A
Other languages
Japanese (ja)
Inventor
Ginzaburo Yamaguchi
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP7118381A priority Critical patent/JPS57186001A/en
Publication of JPS57186001A publication Critical patent/JPS57186001A/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
    • F02B75/32—Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
    • 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
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/04—Engines with prolonged expansion in main cylinders

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To heighten the horsepower efficiency and combustion efficiency, by providing the wrist pin of a piston with an ununiform-thickness pipe cam consisting of an inner and an outer cams and having a prescribed eccentricity angle, to reduce the descending speed of the piston as to the motion of the crank. CONSTITUTION:An inner cam 2 is secured on the wrist pin 5 of the piston 4 of an internal combustion engine. An outer cam 1 is secured on the small end 7 of a connecting rod 6. The inner cam 2 is rotatably supported in a position eccentric to the outer cam 1. The eccentricity angle alpha of the inner cam 2 is defined in such a direction that the connecting rod 6 swings depending on the expansion of the engine. For that reason, the eccentricity angle alpha is set as -thetam/ 2<alpha<180-thetam/2 where thetam denotes the maximum swing angle of the connecting rod 6. As a result, the descending speed of the piston 4 is reduced in relation to the revolution of the crank 10 to prevent the sharp fall in the pressure on the top of the piston to give it a higher impulse.
JP7118381A 1981-05-11 1981-05-11 Piston for internal combustion engine Pending JPS57186001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7118381A JPS57186001A (en) 1981-05-11 1981-05-11 Piston for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7118381A JPS57186001A (en) 1981-05-11 1981-05-11 Piston for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57186001A true JPS57186001A (en) 1982-11-16

Family

ID=13453280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7118381A Pending JPS57186001A (en) 1981-05-11 1981-05-11 Piston for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57186001A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54160907A (en) * 1978-05-17 1979-12-20 Mitsubishi Heavy Ind Ltd Offset cylinder type reciprocating engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54160907A (en) * 1978-05-17 1979-12-20 Mitsubishi Heavy Ind Ltd Offset cylinder type reciprocating engine

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