JPS5495817A - Variable squish piston - Google Patents

Variable squish piston

Info

Publication number
JPS5495817A
JPS5495817A JP227578A JP227578A JPS5495817A JP S5495817 A JPS5495817 A JP S5495817A JP 227578 A JP227578 A JP 227578A JP 227578 A JP227578 A JP 227578A JP S5495817 A JPS5495817 A JP S5495817A
Authority
JP
Japan
Prior art keywords
squish
oil
engine
range
piston
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
JP227578A
Other languages
Japanese (ja)
Inventor
Kyugo Hamai
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
Original Assignee
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP227578A priority Critical patent/JPS5495817A/en
Publication of JPS5495817A publication Critical patent/JPS5495817A/en
Pending legal-status Critical Current

Links

Landscapes

  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE: To improve fuel consumption in light load range and improve output in heavy load range, by controlling resulting in squish in accordance with engine load condition.
CONSTITUTION: A piston 3 is made up of a body 8 and a ring piston 9 fitted it to slide freely, an oil chamber 10 to lead the engine oil is partitioned off, a ring plain 28 is formed on the ceiling wall 27 of the combustion chamber 4, a squish area 30 is formed between the ceiling wall and the top of the ring piston 9. Thereby, in the range of light load rotation of the engine, the engine oil pushes the check valve 17 to flow into the oil chamber 10 being controlled the inflow at the orifice 18, the ring piston 9 rises to decrease the squish area 30, gas fluidization is arrose due to powerful squish before at the top dead center in compression stroke. In the range of heavy load rotation, the oil in the oil chamber 10 is discharged due to opening of the relief valve 19 through the discharge path 20, the ring piston 9 lowers to decrease the squish, the cylinder volume expands to improve the filling efficiency.
COPYRIGHT: (C)1979,JPO&Japio
JP227578A 1978-01-12 1978-01-12 Variable squish piston Pending JPS5495817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP227578A JPS5495817A (en) 1978-01-12 1978-01-12 Variable squish piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP227578A JPS5495817A (en) 1978-01-12 1978-01-12 Variable squish piston

Publications (1)

Publication Number Publication Date
JPS5495817A true JPS5495817A (en) 1979-07-28

Family

ID=11524805

Family Applications (1)

Application Number Title Priority Date Filing Date
JP227578A Pending JPS5495817A (en) 1978-01-12 1978-01-12 Variable squish piston

Country Status (1)

Country Link
JP (1) JPS5495817A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825637U (en) * 1981-08-14 1983-02-18 トヨタ自動車株式会社 Variable compression ratio mechanism for internal combustion engines
JPS58165543A (en) * 1982-03-25 1983-09-30 Hitachi Zosen Corp Internal-combustion engine with variable compression ratio device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825637U (en) * 1981-08-14 1983-02-18 トヨタ自動車株式会社 Variable compression ratio mechanism for internal combustion engines
JPH0110419Y2 (en) * 1981-08-14 1989-03-24
JPS58165543A (en) * 1982-03-25 1983-09-30 Hitachi Zosen Corp Internal-combustion engine with variable compression ratio device
JPS6352221B2 (en) * 1982-03-25 1988-10-18 Hitachi Shipbuilding Eng Co

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