Cylinder deactivation method to minimize drivetrain torsional disturbances
US7260467B2 · kind B2 · utility
27Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2003 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Aug 20, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method are described for reducing engine vibration during cylinder deactivation in selected operating conditions. The method utilizes open valve deactivation to better match the cylinder pressure of deactivated cylinders to combusting cylinders. This mode is utilized, along with cylinder closed valve cylinder deactivation, to improve overall fuel economy, while at the same time reducing vibration felt by the vehicle driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.