Drive force distribution device and method for distributing drive force
US7553257B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 1, 2006 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Sep 15, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2510/0291
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An ECU estimates the temperatures of the heat generating portions provided in a drive force transmission system, or a transaxle, a rear differential, and a torque coupling, in correspondence with not only the rotational speed (the differential rotational speed) of each heat generating portion and the torque transmission rate of the torque coupling but also the outside temperature detected by an outside temperature sensor. If the estimated temperature of any of the heat generating portions exceeds a respective predetermined temperature, the ECU controls operation of the torque coupling to suppress overheating of the heat generating portion. That is, the temperature of each heat generating portion is accurately detected through a simplified structure and overheating of the heat generating portion is effectively suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.