Title:
CONSTANT SPEED TRAVELING DEVICE
Document Type and Number:
Japanese Patent JPH01145238
Kind Code:
A
Abstract:
PURPOSE:To prevent the sharp rise of accelerating speed by duty-ratio- controlling an actuator means for the constant speed traveling control in the direction for reducing the car speed difference when the difference between a memorized car speed and an traveling car speed is less than a prescribed value and executing the constant accelerating speed control when the difference is over a prescribed value. CONSTITUTION:In the constant speed traveling control, a CPU compares the car speed (traveling part speed) at present and a car speed (memorized car speed) memorized as a set car speed which is detected by a car speed sensor (lead switch SW2) during the turning-ON operation of a set switch SW4. When it is judged that the car speed difference is less than a prescribed value, a control valve V1 and a vent valve V2 are duty-ratio-controlled in the direction for reducing the car speed difference, and the opening degree of throttle valve SV is controlled by a negative pressure actuator AC. When the car speed difference is over the prescribed value, the constant accelerating speed control is executed by duty-ratio-controlling each valve V1, V2.
Inventors:
OGAWA KENICHI
Application Number:
JP30207587A
Publication Date:
June 07, 1989
Filing Date:
November 30, 1987
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
B60K31/06; B60W30/00; F02D29/02; (IPC1-7): B60K31/06; F02D29/02
Attorney, Agent or Firm:
Higuchi Takehisa
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