Engine control system having quick-open valve timing
US9650924B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2014 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Mar 8, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control system for an engine includes a variable valve timing device configured to selectively adjust opening and closing of an exhaust valve of the engine, a sensor configured to generate a signal indicative of a condition associated with pre-ignition of air and fuel in a cylinder of the engine, and a controller in communication with the variable valve timing device and the sensor. The controller is configured to control the variable valve timing device to selectively initiate a conventional valve timing or a quick-open valve timing based on the signal. In the quick-open valve timing the exhaust valve is moved from a closed position to a maximum lift position in a shorter amount of time than in the conventional valve timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.