Control device for electric vehicle stopping at slope road
US6755489B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Jan 14, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S477/901
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A control device for an electric vehicle stopping at a slope road which reduces a power consumption of the electric motor when the vehicle is stopping at the slope road with the generation of a drive torque. The device judges the stopping state of the vehicle at the slope road when a condition that a throttle opening degree is not zero, that the drive torque is not zero, and that a vehicle speed is zero continues for a predetermined time, applies a hydraulic pressure P relative to wheel cylinder, and decreases the drive torque outputting to the motor to be zero. The device judges a release of the stopping state at the slope road when a condition that a throttle opening degree becomes greater than a throttle opening degree under the vehicle stopping state at the slope road, recovers the drive torque, and gradually releases an application of the hydraulic pressure to the wheel cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.