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Patent Searching and Data


Title:
VALVE DRIVE FAILURE DETECTION DEVICE IN THROTTLE VALVE CONTROL DEVICE
Document Type and Number:
Japanese Patent JPH0559996
Kind Code:
A
Abstract:

PURPOSE: To judge a failure of opening and closing control of a throttle valve without using a throttle opening sensor for detecting the opening of the throttle valve to reduce cost, and adopt on a vehicle engine on which a mount area for the throttle opening sensor is restricted.

CONSTITUTION: A failure of rotation of a throttle valve 1 due to seizure of a stepping motor 4 and a failure of opening and closing control of the throttle valve 1 produced if the throttle valve 1 is caught by some reason are judged based on a target rotational speed D determined by the depressed amount 7 of an accelerator pedal and an actual rotational speed D of an engine obtained by an engine rotational speed sensor 8 without using a throttle opening sensor for detecting the opening of the throttle valve 1.


Inventors:
OTOSHI KOTA
NAKAMURA TOSHIAKI
Application Number:
JP22051491A
Publication Date:
March 09, 1993
Filing Date:
August 30, 1991
Export Citation:
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Assignee:
TOYODA AUTOMATIC LOOM WORKS
International Classes:
F02D9/02; F02D11/10; F02D41/22; (IPC1-7): F02D9/02; F02D11/10; F02D41/22
Attorney, Agent or Firm:
Hironobu Onda