Controlling an engine with adjustable intake valve timing
US7069909B2 · kind B2 · utility
18Cited by
12References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 18, 2004 |
| Grant date | Jul 4, 2006 |
| Priority date | — |
| Expiry date | Aug 18, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method to control an engine wherein at least intake valve timing is retarded relative to a crankshaft position depending on engine operating conditions. According to the method, at least a portion of the fuel is injected during the intake valve open period with retarded valve timing. The method can reduce fuel consumption, reduce transient fuel requirements, improve engine performance, and reduce CO emissions, at least under some conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.