Engine control with valve deactivation monitoring using exhaust pressure
US8006670B2 · kind B2 · utility
42Cited by
14References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2010 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Apr 1, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system or method for controlling a multiple cylinder internal combustion engine operable in a reduced displacement mode with at least one valve or cylinder selectively deactivated include controlling the engine in response to detecting opening of an exhaust valve after deactivation based measured or inferred exhaust pressure changes after deactivation. In one embodiment, controlling the engine includes reactivating one or more deactivated cylinders/valves, inhibiting subsequent deactivation, and/or storing a diagnostic code in a computer readable storage medium in response to detecting valve opening after deactivation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.