Control apparatus for electric vehicle
US8634987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2010 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Jun 12, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A creep travel capability of an electric vehicle is secured when an abnormality occurs in a brake sensor. When an accelerator operation amount reaches 0% in a low vehicle speed region, a target creep torque is set, whereupon a motor-generator is controlled toward the target creep torque. The target creep torque is reduced as a brake pedal is depressed in order to suppress heat generation and the like in the motor-generator during vehicle braking. Hence, in an electric vehicle in which the target creep torque is varied in accordance with the brake operation amount, when an abnormality occurs (step S11) in a brake sensor for detecting a brake operation amount, a preset prescribed creep torque is employed as the target creep torque regardless of the brake operation amount (step S15). The prescribed creep torque is set at a required magnitude for securing the creep travel capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.