Composite auxiliary machine for a vechile and a control unit thereof

A composite auxiliary machine for a vehicle comprising:

• a compressor for compressing a refrigerant inside a refrigeration cycle device, a rotary machine rotating together with said compressor in response to driving force from a vehicle engine, and
• a limiter mechanism provided between said rotary machine and said compressor, for stopping cooperated rotation between said rotary machine and said compressor when torque applied to the compressor is equal to or higher than a predetermined torque;
• wherein
• a dumping section for absorbing torque fluctuations of said compressor is disposed between said compressor and said rotary machine;
• and
• said compressor is a compressor of a variable displacement type, and when starting the engine, the rotary machine is actuated as an electric starter motor, and an amount of discharge from said compressor is reduced by a predetermined amount in order to secure the necessary torque of the rotary machine for starting said engine.

A composite auxiliary machine for a vehicle comprising:

• a compressor for compressing a refrigerant inside a refrigeration cycle device, said compressor having a variable displacement mechanism for varying an amount of discharge of the refrigerant per revolution;
• a rotary machine functioning as both a generator and an electric motor, said rotary machine being connected to said compressor and rotating together with said compressor;
• a drive pulley rotating in response to driving force from a vehicle engine to actuate said compressor or said rotary machine;
• intermittent means provided between said drive pulley and said compressor, or between said drive pulley and said rotary machine to transmit and terminate the driving force of said drive pulley;
• and
• control means for controlling an amount of discharge from said compressor, operation of said rotary machine, and engagement and disengagement of said intermittent means, wherein
• said control means controls to engage said intermittent means in starting said vehicle engine, and to operate said rotary machine as an electric motor for the purpose of actuating said vehicle engine, and said control means controls to make the amount of discharge from said compressor smaller than that necessary in said refrigeration cycle device.