System and method of controlling ignition timing in an engine with a variably operated intake valve
US6513494B2 · kind B2 · utility
4Cited by
5References
69Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Nov 30, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method of optimally controlling ignition timings in an engine conditioned in first and second modes of intake control. A control unit includes an unthrottled operation control conducting the first mode by varying a closing timing of an intake valve and fixing a throttle position of a throttle valve, a throttled operation control conducting the second mode by varying the throttle position of the throttle valve and fixing the closing timing of the intake valve, and an ignition timing control determining different ignition timings to be used in the first and second modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.