System and method for controlling engine torque to prevent driveline bump during a downshift when a throttle valve is closed
US9056603B2 · kind B2 · utility
1Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2013 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | May 20, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2306/54
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system according to the principles of the present disclosure includes a downshift determination module and a speed control module. The downshift determination module determines when a closed-throttle downshift occurs. The closed-throttle downshift is a downshift of a transmission when a throttle valve of an engine is closed. The speed control module controls engine speed based on turbine speed during the closed-throttle downshift. The turbine speed is a speed of a turbine in a torque converter that couples the engine to the transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.