Controlled vehicle launch using a stepped ratio transmission
US8690728B2 · kind B2 · utility
2Cited by
11References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2011 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Aug 22, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/025
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method for controlling a vehicle powertrain during launch includes controlling slip across a first clutch that transmits engine torque through the first clutch and the current gear while a transmission operates in a current gear other than a launch gear, disengaging the first clutch, engaging the launch gear, and controlling slip across a second clutch that transmits engine torque through the second clutch and the launch gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.