JPS5495817A - Variable squish piston - Google Patents
Variable squish pistonInfo
- 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
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
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)
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 |
-
1978
- 1978-01-12 JP JP227578A patent/JPS5495817A/en active Pending
Cited By (4)
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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