Variable valve timing apparatus
US6637386B2 · kind B2 · utility
77Cited by
5References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Nov 27, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/34
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Just after the start of an engine at cold start, an overlap in the opening time of an intake valve (7a) and an exhaust valve (7b) is controlled to include an intake stroke range, such that liquid fuel in an intake port (11) flows into a cylinder with the downward movement of a piston (16) without being directly exhausted to an exhaust side, so that the fuel can be combusted without fail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.