Valve timing for four stroke internal combustion engines
US5927238A · kind A · utility
31Cited by
10References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Mar 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of controlling a four stroke internal combustion engine having at least one combustion chamber, the or each combustion chamber having at least one exhaust valve, the method including varying the timing of the closure of the or each exhaust valve with respect to the crank angle of the engine by advancing the exhaust valve closure at least under certain engine conditions in response to an increased engine load, and/or delaying the exhaust valve closure at least under certain conditions in response to a decreased engine load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.