Hybrid vehicle
US6722456B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Jan 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/946
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To realize a determination whether or not a failure has occurred in a one-way clutch, a hybrid vehicle is provided with an engine 11, a generator motor 16, an output shaft coupled to a driving wheel 41, a differential gear unit that is provided with at least three gear elements, the elements coupled to the engine 11, the generator motor 16, and the output shaft, respectively, a one-way clutch that is placed in a free state when the engine 11 rotates in a forward direction and in a locked state when the engine 11 begins to rotate in a backward direction, and a failure occurrence determination process means 91 that determines that a failure has occurred in the one-way clutch if an engine speed is a negative value. Since it is determined that a failure has occurred in the one-way clutch when the engine speed is a negative value, a damage of the one-way clutch can be prevented from being aggravated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.