Method of predicting transmission oil temperature
US5319963A · kind A · utility
52Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 19, 1993 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | May 19, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/467
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method for predicting the temperature of automatic transmission fluid, in real time, in an automatic transmission. The method involves determining a constant for thermal inertia of the transmission, determining a torque converter heat flow, determining a transmission heat flow, determining a transmission cooler heat flow and determining an exterior-of-transmission heat flow. From each of the four above-mentioned heat flows and the above-mentioned constant, the transmission fluid temperature is predicted. The predicted temperature is used to modify operational parameters of the transmission such as its shift tables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.