Cooling a control device of the gearbox of a motor vehicle
US6688383B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | May 31, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2189
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A method of adjusting an operating temperature of a control device (2) of a motor vehicle automatic transmission. The transmission control has a hydraulic unit (3) and an electronic unit (4) with electronic modules. The control device (3)is situated in a transmission housing which is partially filled with transmission oil and at least partly surrounded by transmission oil. The control device (2) has a cooling device (5) by which at least part of the electronic unit (4) is cooled with the transmission oil. The transmission oil has a temperature &THgr;C which is lower than a prevailing transmission oil temperature &THgr;G. The electronic unit (4) is impinged upon with a defined volume flow of the transmission oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.