Patent ID: 9422861
Filing Date: 2016-08-23
CPC Classification: B60H,F02B

Claim Text:
1. A vehicle air-conditioning control apparatus installed in a vehicle capable of performing automatic stop and automatic restart of an engine in accordance with a preset given condition, comprising: an air mix damper for changing a mixing ratio between cool air generated by a cool-air generator and warm air generated by a warm-air generator to thereby produce conditioned air having a desired temperature; an actuator for driving the air mix damper; a target opening degree determination device operable to determine a target opening degree of the air mix damper; a drive frequency reduction device operable, during automatic stop of the engine, to reduce a drive frequency of the actuator as compared to during running of the engine; a target opening degree correction device operable, during automatic stop of the engine and when a current target opening degree determined by the target opening degree determination device this time is greater than a previous target opening degree determined by the target opening degree determination device last time, to increase the current target opening degree just by a given opening degree, and set the resulting opening degree as a corrected target opening degree, and, during automatic stop of the engine and when the current target opening degree is less than the previous target opening degree, to reduce the current target opening degree just by a given opening degree, and set the resulting opening degree as a corrected target opening degree; a drive control device operable, during running of the engine, to drivingly control the actuator to allow the air mix damper to have an opening degree conforming to the target opening degree determined by the target opening degree determination device, and, during automatic stop of the engine, to drivingly control the actuator to allow the air mix damper to have an opening degree conforming to the corrected target opening degree corrected by the target opening degree correction device; and an actual opening degree detection device operable to detect an actual opening degree of the air mix damper, wherein the drive control device is configured to perform the drive control of the actuator, on a condition that a deviation between the actual opening degree detected by the actual opening degree detection device, and the target opening degree is equal to or greater than a given threshold value, wherein the drive frequency reduction device is operable, during automatic stop of the engine, to change the given threshold value to a larger value as compared to during running of the engine, and wherein the drive frequency reduction device is operable, during automatic stop of the engine, to increase a drive cycle time of the actuator as compared to during running of the engine.