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Title:
IDLING SPEED CONTROLLER
Document Type and Number:
Japanese Patent JPS572440
Kind Code:
A
Abstract:

PURPOSE: To prevent stop failure of an engine for the time of closing a throttle valve when speed of the engine is controlled to target speed at the time of idling operation, by suspending control operation to the target speed when a speed change rate of the engine is not smaller than a prescribed value.

CONSTITUTION: A circuit 13 for detecting a change rate of engine speed is provided in a control unit 9 that controls an idling state in an engine 1. If the operator opens a throttle within the range of closing for a throttle full open switch 8, speed 7a of the engine rapidly rises, and output 13a of a detecting circuit 13 becomes 1 then output 14a of a flip flop 14 becomes 1. This output is input to an actuator driving circuit 12a, and a signal 6a for driving an actuator that controls an air control valve 5 is not output.


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Inventors:
TABUCHI TAKESHIGE
Application Number:
JP7588480A
Publication Date:
January 07, 1982
Filing Date:
June 04, 1980
Export Citation:
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Assignee:
NIPPON DENSO CO
International Classes:
G05D13/62; F02D9/02; F02D29/02; (IPC1-7): F02D9/02; F02D29/02; G05D13/62



 
Next Patent: JPH0572441