Method and device for controlling the operating temperature of a hydraulic operating medium of a drive unit of a vehicle
US6871703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2002 |
| Grant date | Mar 29, 2005 |
| Priority date | — |
| Expiry date | Jul 10, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P2060/045
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a method for controlling the operating temperature of a hydraulic operating medium for a drive unit of a vehicle in a selected range, the operating temperature is controlled by controlling the volume flow of the operating medium for a heat exchange between the operating medium and a secondary heat transfer medium flow medium to a predetermined desired value as a function of the actual value of the operating temperature and as a function of at least one other vehicle parameter, by which a certain temperature influencing effect on the operating medium can be provided. The selected range of the operating temperature includes both the temperature values occurring in the warm-up phase of the drive unit and temperature values, which are substantially higher than the desired value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.