AIR CONDITIONING DEVICE FOR VEHICLE AND IDLE ROTATION SPEED CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

摘要

PURPOSE: To provide an air conditioning device for a vehicle capable of controlling the discharge capacity of a capacity variable compressor in an appropriate condition corresponding to the idling state of an internal combustion engine. CONSTITUTION: In order to change a set pressure difference, the standard for the inner autonomic motion of a control valve CV, the air conditioning unit ECU 72 gradually changes the discharge capacity of the compressor by gradually changing the current-carrying duty ratio Dt for driving an electromagnetic actuator part 51 of the control valve CV.