JPS5688926A - Variable compression ratio engine - Google Patents
Variable compression ratio engineInfo
- Publication number
- JPS5688926A JPS5688926A JP16454479A JP16454479A JPS5688926A JP S5688926 A JPS5688926 A JP S5688926A JP 16454479 A JP16454479 A JP 16454479A JP 16454479 A JP16454479 A JP 16454479A JP S5688926 A JPS5688926 A JP S5688926A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- compression ratio
- low
- plunger
- obtaining
- 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
Links
Abstract
PURPOSE: To improve the fuel cost and the output of an engine by changing the compression ratio in accordance with the operational state of the engine.
CONSTITUTION: For a high-speed or a low load state of operation of an engine, since oil pressure is supplied into an oil cylinder 42 to hold a plunger 44 fixedly at a projected position, an auxiliary piston 32 is also held fixedly at a lower position without reference to the stroke of the engine for obtaining a comparatively high compression ratio. For a low-speed or a high load state, since the oil pressure in the cylinder 42 is discharged to make the plunger 44 displaceable by sliding, the auxiliary piston 32 is pushed upward by the pressure generated in a combustion chamber 18 in a compressive or an explosive stroke of the engine, and the capacity of the combustion chamber is essentially increased for obtaining a comparatively low compression ratio.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16454479A JPS5688926A (en) | 1979-12-18 | 1979-12-18 | Variable compression ratio engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16454479A JPS5688926A (en) | 1979-12-18 | 1979-12-18 | Variable compression ratio engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5688926A true JPS5688926A (en) | 1981-07-18 |
JPS6118013B2 JPS6118013B2 (en) | 1986-05-10 |
Family
ID=15795167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16454479A Granted JPS5688926A (en) | 1979-12-18 | 1979-12-18 | Variable compression ratio engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5688926A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5934434A (en) * | 1982-08-19 | 1984-02-24 | Nissan Motor Co Ltd | Internal-combustion engine |
JPS5946370A (en) * | 1982-09-08 | 1984-03-15 | Daihatsu Motor Co Ltd | Compression ratio variable type internal-combustion engine |
JPS6041540U (en) * | 1983-08-30 | 1985-03-23 | 三菱自動車工業株式会社 | high compression ratio engine |
US4516537A (en) * | 1982-03-24 | 1985-05-14 | Daihatsu Motor Company | Variable compression system for internal combustion engines |
JPH04504157A (en) * | 1989-09-28 | 1992-07-23 | シーメンス アクチエンゲゼルシヤフト | Variable compression ratio internal combustion engine |
WO2011030471A1 (en) * | 2009-09-11 | 2011-03-17 | トヨタ自動車株式会社 | Combustion pressure controller |
-
1979
- 1979-12-18 JP JP16454479A patent/JPS5688926A/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4516537A (en) * | 1982-03-24 | 1985-05-14 | Daihatsu Motor Company | Variable compression system for internal combustion engines |
JPS5934434A (en) * | 1982-08-19 | 1984-02-24 | Nissan Motor Co Ltd | Internal-combustion engine |
JPS5946370A (en) * | 1982-09-08 | 1984-03-15 | Daihatsu Motor Co Ltd | Compression ratio variable type internal-combustion engine |
JPS6041540U (en) * | 1983-08-30 | 1985-03-23 | 三菱自動車工業株式会社 | high compression ratio engine |
JPH04504157A (en) * | 1989-09-28 | 1992-07-23 | シーメンス アクチエンゲゼルシヤフト | Variable compression ratio internal combustion engine |
WO2011030471A1 (en) * | 2009-09-11 | 2011-03-17 | トヨタ自動車株式会社 | Combustion pressure controller |
CN102741525A (en) * | 2009-09-11 | 2012-10-17 | 丰田自动车株式会社 | Combustion pressure controller |
JP5223970B2 (en) * | 2009-09-11 | 2013-06-26 | トヨタ自動車株式会社 | Combustion pressure control device |
Also Published As
Publication number | Publication date |
---|---|
JPS6118013B2 (en) | 1986-05-10 |
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