Method and apparatus for motor-driven throttle valve, automobile, method of measuring temperature of motor for driving automotive throttle valve, and method of measuring motor temperature
US6837217B1 · kind B1 · utility
19Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/602
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method is provided for easily avoiding undesirable effects on various physical values due to the change in temperature of a motor for driving a throttle valve without causing secondary problems. A technique is also provided for measuring the temperature of the motor electrically. The method uses a compensation device for correcting the power supply to the motor by detecting the impedance of the motor windings and/or the change in the motor temperature. The temperature of the motor is estimated from the current and voltage to the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.