Title:
CONSTANT SPEED TRAVELING DEVICE
Document Type and Number:
Japanese Patent JPH01145237
Kind Code:
A
Abstract:
PURPOSE:To prevent the car speed hunting by suspending the duty-ratio control of an actuator means for the constant speed traveling control when the difference between a memorized car speed and a traveling car speed is less than a prescribed value or the absolute value of the accelerating speed is less than a prescribed value. CONSTITUTION:In the constant speed traveling control, a CPU compares the car speed (traveling cart speed) at present and a car speed (memorize 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. The opening degree of a throttle and a vent valve V2 so that the difference becomes zero. In this case, if the difference between the memorized car speed and the traveling car speed is less than a prescribed value or the absolute value of the accelerating speed is less than a prescribed value, duty ratio control is suspended. Said prescribed value is set to a value over the insensitive range of each valve V1, V2.
Inventors:
OGAWA KENICHI
Application Number:
JP30207387A
Publication Date:
June 07, 1989
Filing Date:
November 30, 1987
Export Citation:
Assignee:
AISIN SEIKI
International Classes:
F02D29/02; B60K31/06; B60W30/00; (IPC1-7): B60K31/06; F02D29/02
Attorney, Agent or Firm:
Higuchi Takehisa