Title:
THROTTLE VALVE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3688132
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To safely cope with a damage of a throttle valve device by providing a means for diagnosing an acceleration sensor and a throttle sensor, carrying out a stopping of a motor driving and a restriction of a fuel injection at the time of a sensor abnormality and setting a fuel cut condition corresponding to a damage state of each sensor.
SOLUTION: Two acceleration sensors 25, 26 are disposed on an acceleration part 6 and two throttle sensors 16, 17 are provided on a throttle part 7 so as to constitute a control device to a multiple system in order to ensure a safety during a vehicle traveling. A throttle control operation part 4 is monitored by a comparison of a target open degree command with an actual throttle open degree in an engine control operation part 2 and the engine control operation part 2 is monitored by a comparison of a target open degree command with an acceleration open degree in the throttle control operation part 4. At the time of a generation of an abnormality, a fuel cut condition is separately selected according to an abnormal state of each sensor, a state of a throttle open degree, a judgment state of an idle switch and a damage state and a safe fail/safe including a backward traveling is constructed.
Inventors:
Hisashi Ishikura
Masami Nagano
Satoshi Yamaji
Masami Nagano
Satoshi Yamaji
Application Number:
JP26863698A
Publication Date:
August 24, 2005
Filing Date:
September 22, 1998
Export Citation:
Assignee:
株式会社日立製作所
株式会社日立カーエンジニアリング
株式会社日立カーエンジニアリング
International Classes:
F02D11/10; F02D9/02; F02D41/22; (IPC1-7): F02D41/22; F02D9/02
Domestic Patent References:
| JP5099016A | ||||
| JP6002574A | ||||
| JP9287515A | ||||
| JP10176581A | ||||
| JP5312090A |
Attorney, Agent or Firm:
Yusuke Hiraki