System for controlling valve timing in event of failure
US6877468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2003 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Jan 13, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/34436
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve timing control apparatus for an internal combustion engine is provided which is designed to ensure the drivability of the engine in the event of failure in operation of a variable valve timing control system made up of intake and exhaust side variable valve timing control mechanisms. If one of intake and exhaust side variable valve timing control mechanism has failed, the control apparatus actuates the other variable valve timing control mechanism to control the timing of opening and closing of a corresponding one of intake and exhaust valves so as to decrease an amount of overlap between the opening and closing of the intake and exhaust valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.