Drive force distribution device and method for distributing drive force
US7581612B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 1, 2006 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 22, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2510/0291
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An IG-off-timer measures the time t_off from when an engine is stopped, or an ignition is turned off. An ECU sequentially memorizes an estimated temperature of each of heat generating portions as a memorized temperature. Immediately after the engine is re-started, the ECU sets an initial value of the estimated temperature of each heat generating portion in such a manner that the initial value reflects a temperature drop of the heat generating portion in the deactivation period of the engine. The temperature of the heat generating portion is thus accurately estimated even after re-starting of the engine. The heat generating portions are thus appropriately protected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.