JPS64329A - Compression ratio variable device for internal combustion engine - Google Patents

Compression ratio variable device for internal combustion engine

Info

Publication number
JPS64329A
JPS64329A JP15574287A JP15574287A JPS64329A JP S64329 A JPS64329 A JP S64329A JP 15574287 A JP15574287 A JP 15574287A JP 15574287 A JP15574287 A JP 15574287A JP S64329 A JPS64329 A JP S64329A
Authority
JP
Japan
Prior art keywords
piston
liquid chamber
compression ratio
pressure
fitted
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
JP15574287A
Other languages
Japanese (ja)
Other versions
JPH01329A (en
JPH0826793B2 (en
Inventor
Seiji Suga
Tatsuyuki Matsuya
Seinosuke Hara
Hiromichi Bito
Takayuki Arai
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
Atsugi Motor Parts Co Ltd
Original Assignee
Nissan Motor Co Ltd
Atsugi Motor Parts 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 Nissan Motor Co Ltd, Atsugi Motor Parts Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP15574287A priority Critical patent/JPH0826793B2/en
Priority to US07/208,312 priority patent/US4934347A/en
Publication of JPS64329A publication Critical patent/JPS64329A/en
Publication of JPH01329A publication Critical patent/JPH01329A/en
Publication of JPH0826793B2 publication Critical patent/JPH0826793B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Pistons, Piston Rings, And Cylinders (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE: To improve the extent of responsiveness to variable control from a high compression ratio state to the low compression ratio by making pressure oin of an upper liquid chamber in a piston speedily dischargeable at a time when high pressure combustion pressure acts on top of the outer piston externally fitted in an inner piston where a connecting rod is connected.
CONSTITUTION: An inner piston 29, where a connecting rod 24 is connected, is fitted in the outer piston of 21 screwed with an annulus 22 on the lower inner circumference via a piston pin 23. And, with upward movement of this outer piston 21, an upper liquid chamber 31 is formed in space between the said piston 21 and the inner piston 29, and also with the downward movement, a lower liquid chamber is made so s to be formed in space between the annulus 22 and the inner piston 29. In the piston pin 23, there is fitted with a spool valve 26 which is slidden in an working liquid chamber 25 in the inner part, whereby a feed passage 35 and a discharge passage 36 are made so as to be selectable, and this spool valve 26 is made so as to be moved in an opening direction of the discharge passage 36 according to hydraulic pressure of the upper liquid chamber 31 to be transmitted through a pressure passage 37.
COPYRIGHT: (C)1989,JPO&Japio
JP15574287A 1987-06-18 1987-06-23 Variable compression ratio device for internal combustion engine Expired - Lifetime JPH0826793B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15574287A JPH0826793B2 (en) 1987-06-23 1987-06-23 Variable compression ratio device for internal combustion engine
US07/208,312 US4934347A (en) 1987-06-18 1988-06-15 Variable compression piston arrangement for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15574287A JPH0826793B2 (en) 1987-06-23 1987-06-23 Variable compression ratio device for internal combustion engine

Publications (3)

Publication Number Publication Date
JPS64329A true JPS64329A (en) 1989-01-05
JPH01329A JPH01329A (en) 1989-01-05
JPH0826793B2 JPH0826793B2 (en) 1996-03-21

Family

ID=15612441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15574287A Expired - Lifetime JPH0826793B2 (en) 1987-06-18 1987-06-23 Variable compression ratio device for internal combustion engine

Country Status (1)

Country Link
JP (1) JPH0826793B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587313A (en) * 1984-11-20 1986-05-06 Hitachi Chemical Company, Ltd. Radiation curable pressure-sensitive adhesive composition
US4832318A (en) * 1988-03-10 1989-05-23 John Wang Lifting telescoping tube

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9546733B2 (en) * 2010-12-27 2017-01-17 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Piston

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4587313A (en) * 1984-11-20 1986-05-06 Hitachi Chemical Company, Ltd. Radiation curable pressure-sensitive adhesive composition
US4832318A (en) * 1988-03-10 1989-05-23 John Wang Lifting telescoping tube

Also Published As

Publication number Publication date
JPH0826793B2 (en) 1996-03-21

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