Vehicle response during vehicle acceleration conditions
US8239113B2 · kind B2 · utility
7Cited by
33References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2009 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Nov 13, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vehicle control method for a vehicle having powertrain with an internal combustion engine and a transmission having a clutch, the method comprising of transitioning through a lash region of the transmission during clutch slipping conditions in response to a driver tip-in; and during the transition, first retarding ignition timing past maximum torque timing while increasing engine airflow, and then second, advancing ignition timing from the retarded timing while continuing to increase engine airflow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.