Apparatus and method for controlling variable valve in internal combustion engine
US6705257B2 · kind B2 · utility
16Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Mar 16, 2004 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine temperature and an engine start are detected, and if a lower temperature engine start of a predetermined temperature or lower is detected, while controlling the closing timing of an intake valve to the vicinity of the intake bottom dead center with respect to a reference valve operation characteristics to be normally set, valve overlapped amount is controlled to be equal to or less than a valve overlap amount in said reference valve operation characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.