JPS55107011A - Valve driver for internal combustion engine - Google Patents
Valve driver for internal combustion engineInfo
- Publication number
- JPS55107011A JPS55107011A JP1390479A JP1390479A JPS55107011A JP S55107011 A JPS55107011 A JP S55107011A JP 1390479 A JP1390479 A JP 1390479A JP 1390479 A JP1390479 A JP 1390479A JP S55107011 A JPS55107011 A JP S55107011A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- exhaust valve
- engine
- gas
- cam shaft
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L13/0042—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams being profiled in axial and radial direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
PURPOSE:To prevent the blow-back and temperature fall of gas remaining in a cylinder and effectively decrease NOx without deteriorating the running performance of an engine, by causing the closing period of an exhaust valve and the opening period of an intake valve to correspond to each other and controlling the relation between both the periods to vary depending on the running condition of the engine. CONSTITUTION:A tridimensional cam 10 for an exhaust valve is mounted on a cam shaft 2 installed over a cylinder head 1. A piston 7 is coupled to the end of the cam shaft. Oil pressure, which rises in connection with the degree of opening of an accelerator pedal, acts on the piston 7 to displace the cam shaft 2 to advance the closing period of the exhaust valve 11. An intake valve is controlled by the same mechanism so that the opening period of the intake valve is delayed depending on the closing period of the exhaust valve 11. As a result, gas remaining in a cylinder is regulated depending on a running condition so that most of the gas is enclosed in the cylinder and the temperature of the gas in the cylinder is raised. Thus, combustion is improved and NOx is effectively decreased without deteriorating the running performance of an engine.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1390479A JPS55107011A (en) | 1979-02-09 | 1979-02-09 | Valve driver for internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1390479A JPS55107011A (en) | 1979-02-09 | 1979-02-09 | Valve driver for internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55107011A true JPS55107011A (en) | 1980-08-16 |
JPS6147295B2 JPS6147295B2 (en) | 1986-10-18 |
Family
ID=11846154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1390479A Granted JPS55107011A (en) | 1979-02-09 | 1979-02-09 | Valve driver for internal combustion engine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55107011A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62247107A (en) * | 1986-04-17 | 1987-10-28 | Mazda Motor Corp | Valve driving controller of diesel engine |
JP2002242709A (en) * | 2001-02-14 | 2002-08-28 | Mazda Motor Corp | 4-cycle engine for automobile |
JP2002242714A (en) * | 2001-02-14 | 2002-08-28 | Mazda Motor Corp | 4-cycle engine for automobile |
JP2003120348A (en) * | 2001-10-12 | 2003-04-23 | Denso Corp | Valve timing control device for internal combustion engine |
KR100440024B1 (en) * | 2001-11-28 | 2004-07-14 | 현대자동차주식회사 | Oil leak preventing structure |
US6886532B2 (en) | 2001-03-13 | 2005-05-03 | Nissan Motor Co., Ltd. | Intake system of internal combustion engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52131021A (en) * | 1976-04-28 | 1977-11-02 | Suzuki Motor Co Ltd | Valve timing changing device in 4-cycle engine |
-
1979
- 1979-02-09 JP JP1390479A patent/JPS55107011A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52131021A (en) * | 1976-04-28 | 1977-11-02 | Suzuki Motor Co Ltd | Valve timing changing device in 4-cycle engine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62247107A (en) * | 1986-04-17 | 1987-10-28 | Mazda Motor Corp | Valve driving controller of diesel engine |
JP2002242709A (en) * | 2001-02-14 | 2002-08-28 | Mazda Motor Corp | 4-cycle engine for automobile |
JP2002242714A (en) * | 2001-02-14 | 2002-08-28 | Mazda Motor Corp | 4-cycle engine for automobile |
US6886532B2 (en) | 2001-03-13 | 2005-05-03 | Nissan Motor Co., Ltd. | Intake system of internal combustion engine |
JP2003120348A (en) * | 2001-10-12 | 2003-04-23 | Denso Corp | Valve timing control device for internal combustion engine |
KR100440024B1 (en) * | 2001-11-28 | 2004-07-14 | 현대자동차주식회사 | Oil leak preventing structure |
Also Published As
Publication number | Publication date |
---|---|
JPS6147295B2 (en) | 1986-10-18 |
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