Title:
THROTTLE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP3770675
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase the reliability of an abnormality judgment by providing a position sensor constituted of two sensors detecting the position of the same object, changing the outputs of two sensors in opposite directions to each other, and judging the abnormality of the position sensor based on the compared results between the change quantities of the outputs of the sensors and threshold values.
SOLUTION: A dual-system accelerator position sensor 10 is constituted of a main sensor 11 and a sub-sensor 12 outputting detection signals VPA1, VPA2 indicating the accelerator positions changed in opposite directions to each other according to the depressed quantity of an accelerator pedal 2. An ECU 60 receiving the output signals of both sensors 11, 12 calculates the target opening of a throttle valve 30. When the ECU60 judges that the change quantities ΔVPA1 of the output voltages VPA1, VPA2 are the corresponding threshold values ΔTH1, ΔTH2 or above, it judges the accelerator position sensor 10 as abnormal, then it stops a motor 40, interrupts an electromagnetic clutch 50, and stops throttle control for a fail-safe process.
Inventors:
Hiroshi Mizutani
Nagasaka Masumi
Takashi Yamaguchi
Takamasa Kitamura
Yuto Seki
Satoru Matsumoto
Kenji Takine
Nagasaka Masumi
Takashi Yamaguchi
Takamasa Kitamura
Yuto Seki
Satoru Matsumoto
Kenji Takine
Application Number:
JP34017196A
Publication Date:
April 26, 2006
Filing Date:
December 19, 1996
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
Fujitsu Ten Co., Ltd.
Fujitsu Ten Co., Ltd.
International Classes:
F02D41/22; F02D11/10; F02D45/00; (IPC1-7): F02D41/22; F02D11/10; F02D45/00
Domestic Patent References:
| JP8158900A | ||||
| JP2176141A | ||||
| JP8086241A | ||||
| JP6221191A |
Attorney, Agent or Firm:
Hironobu Onda