Engine-starting discrimination system for hybrid vehicle
US6274943A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/903
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system for discriminating engine-starting of a hybrid vehicle having an internal combustion engine and a generator-motor connected to the engine to rotate the engine to start and to be rotated to generate electric power after the engine is started. In the system, elapse of time is measured after the current command value supplied to the generator-motor becomes less than a reference value, and it is determined whether the detected engine speed is greater or equal to a combustion-completion discriminating speed after the measured time has reached a predetermined value. Then, it is determined whether the detected engine speed is determined to be greater or equal to the combustion-completion engine speed, and if it is, it is discriminated that the engine is definitely started. With the arrangement, the engine starting is discriminated in a relatively short time with highly accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.