Automotive air conditioning apparatus

An air conditioning apparatus for a motor vehicle comprising:

• an air flow duct;
• a compressor for driving a cooler to cool air in the duct;
• compressor control means for on-off controlling the compressor in dependence on a predetermined parameter which indicates an operating condition of the cooler;
• engine operation sensor means for sensing varying operating condition of an engine of the motor vehicle;
• and
• control interruption means for preventing the compressor control means from controlling the compressor under at least one predetermined engine operating condition of the motor vehicle;
• the control interruption means comprising switch means operatively connected to the engine operating sensor means to be driven in accordance with the sensed engine operating condition;
• the switch means comprising a movable contact operatively connected to the engine operation sensor means, a first stationary contact electrically connected to the compressor through the compressor control means, the first stationary contact being connected to the movable contact under a constant speed cruising of the motor vehicle, and a second stationary contact directly connected to the compressor, the second stationary contact being connected to the movable contact under a deceleration and idling of the motor vehicle.