Blended torque estimation for automatic transmission systems
US7236869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Jan 3, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H59/30
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque prediction module for an automatic transmission system includes a throttle-based torque prediction module. The throttle-based torque prediction module determines a first predicted torque of an engine in a vehicle that is based on a position of a throttle, an ambient air pressure, an intake temperature, and an engine speed. A torque offset module determines a torque offset that is based on the first predicted torque and a second predicted torque of the engine that is based on a mass airflow in an intake manifold of the engine. A blended torque module determines a third predicted torque of the engine that is based on the torque offset and the second predicted torque. A line pressure control module adjusts a line pressure of the automatic transmission based on the third predicted torque. An ECCC control module adjusts an amount of slip in an ECCC based on the third predicted torque.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.