[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPS6469728A - Compression ratio varying device for internal combustion engine - Google Patents

Compression ratio varying device for internal combustion engine

Info

Publication number
JPS6469728A
JPS6469728A JP22581687A JP22581687A JPS6469728A JP S6469728 A JPS6469728 A JP S6469728A JP 22581687 A JP22581687 A JP 22581687A JP 22581687 A JP22581687 A JP 22581687A JP S6469728 A JPS6469728 A JP S6469728A
Authority
JP
Japan
Prior art keywords
liquid chamber
pressurized oil
compression ratio
piston
oil
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
JP22581687A
Other languages
Japanese (ja)
Other versions
JP2517728B2 (en
Inventor
Hiromichi Bito
Takayuki Arai
Seinosuke Hara
Tatsuyuki Matsuya
Yasuo Takashima
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.)
Nissan Motor Co Ltd
Hitachi Astemo Ltd
Original Assignee
Atsugi Motor Parts Co Ltd
Nissan 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 Atsugi Motor Parts Co Ltd, Nissan Motor Co Ltd filed Critical Atsugi Motor Parts Co Ltd
Priority to JP22581687A priority Critical patent/JP2517728B2/en
Publication of JPS6469728A publication Critical patent/JPS6469728A/en
Application granted granted Critical
Publication of JP2517728B2 publication Critical patent/JP2517728B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • 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
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To improve the responsiveness in switching to a low compression ratio state by supplying the pressurized oil into the upper and lower liquid chambers formed between an outer piston and an inner piston through a check valve opened and closed by the hydraulic pressure before and behind the liquid chambers and discharging the pressurized oil in the upper liquid chamber outside when switching to the low compression ratio state is performed. CONSTITUTION:An inner piston 29 connected with a connecting rod 24 through a piston pin 23 is inserted in free sliding into an outer piston 21 having an annular part 22 screwed onto the lower part inner periphery, and the upper and lower liquid chambers 31 and 32 are formed in the upper and lower parts between the both. A working liquid chamber 25 is formed inside the piston pin 23, and the pressurized oil in the working liquid chamber 25 is supplied into an upper part liquid chamber 31 through a check valve 41, and the pressurized oil in the liquid chamber 31 can be discharged outside from a discharge part 27a through an opening/ closing valve 26 operated according to the variation of the oil pressure in the liquid chamber 31. Further, the upper liquid chamber 31 is allowed to communicate to the lower liquid chamber 31 through a check valve 42, and the pressurized oil in the liquid chamber 31 can be discharged outside through the oil passages 38a and 38b which are opened and closed by the opening/closing valve 26.
JP22581687A 1987-09-09 1987-09-09 Variable compression ratio device for internal combustion engine Expired - Lifetime JP2517728B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22581687A JP2517728B2 (en) 1987-09-09 1987-09-09 Variable compression ratio device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22581687A JP2517728B2 (en) 1987-09-09 1987-09-09 Variable compression ratio device for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS6469728A true JPS6469728A (en) 1989-03-15
JP2517728B2 JP2517728B2 (en) 1996-07-24

Family

ID=16835245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22581687A Expired - Lifetime JP2517728B2 (en) 1987-09-09 1987-09-09 Variable compression ratio device for internal combustion engine

Country Status (1)

Country Link
JP (1) JP2517728B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170119036A (en) * 2016-04-18 2017-10-26 (주)세아테크 Piston for viscous material supply device with reverse flow protection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170119036A (en) * 2016-04-18 2017-10-26 (주)세아테크 Piston for viscous material supply device with reverse flow protection

Also Published As

Publication number Publication date
JP2517728B2 (en) 1996-07-24

Similar Documents

Publication Publication Date Title
JPS54121314A (en) Valve lift varying mechanism for internal combustion engine
DE3275578D1 (en) Apparatus for generating gas under pressure
JPS6473165A (en) Fuel injector for two cycle engine
JPS54134253A (en) Controller for hydraulic stepless transmission
JPS56129795A (en) Rotary compressor
DE3882971D1 (en) HYDRAULIC BEATER.
JPS6473166A (en) Variable discharge high pressure pump
TW347437B (en) Two-stroke engine with improved injection device and associated injection process
JPS5447022A (en) Valve lifter for internal combustion engine
JPS6469728A (en) Compression ratio varying device for internal combustion engine
JPS63308202A (en) Piston-cylinder unit
JPS56156414A (en) Two cycle internal combustion engine
US4465090A (en) Air relay
JPS6424130A (en) Compression ratio variable device for internal combustion engine
JPS6424193A (en) Capacity control device for hermetic screw compressor
ES479646A1 (en) Force limiting device for an actuator rod
EP0393880A3 (en) Seismic pulse generation
JPS6469729A (en) Compression ratio varying device for internal combustion engine
FR2307960A1 (en) Diesel engine with separate combustion chamber - has hydraulically controlled valve between chamber and cylinder
JPS55125318A (en) Controller for scavenging pipe
JPS6424131A (en) Compression ratio variable device for internal combustion engine
JPS5720551A (en) Fuel injector in internal combustion engine
JPS5472508A (en) Hermetic compressor
JPS56118532A (en) Cylinder number controllable engine
JPS55134787A (en) Vane rotary compressor