Idle up of engine of automobile according to elevation of transmission oil temperature
US5199326A · kind A · utility
25Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H59/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In an automobile equipped with an engine, an automatic transmission including hydraulically actuated friction engaging means for shifting stages of the transmission, and an oil pump driven by the engine to provide a pressurized oil for actuating the friction engaging means, the capacity of the oil pump is so minimized as to be only enough for shifting the stages of the transmission, if the idle speed of the engine is temporally increased, when the temperature of oil of the transmission is above a threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.