Abstract: A compressor includes a cylinder housing having a number of pistons, a control chamber communicating with piston casings, a suction chamber and a discharge chamber communicating with the piston casings, a control valve includes a receptacle engaged in the cylinder housing, a valve member engaged in the receptacle for controlling the pressurized air to flow from the discharge chamber into the control chamber of the cylinder housing, and a valve element for controlling a bypass of the pressurized air through the receptacle. A bellow device is connected to actuate the sliding member internally, and a sliding member is slidably engaged in the control space of the receptacle, and to operate the valve element externally with a solenoid device.

Abstract: A diagnostic device for vehicle includes a housing having a display and a control panel, a control unit connected to the housing, a number of input sensors connected to the control unit for sending input signals to the control unit, and for displaying the input signals on the display, and a number of actuators connected to the control unit for being controlled and actuated by the control unit. The control unit includes an input interface circuit for connecting to the input sensors. The control unit includes an output operation circuit for connecting to the actuators.

Abstract: A diagnostic device for vehicle includes a housing having a display and a control panel, a control unit connected to the housing, a number of input sensors connected to the control unit for sending input signals to the control unit, and for displaying the input signals on the display, and a number of actuators connected to the control unit for being controlled and actuated by the control unit. The control unit includes an input interface circuit for connecting to the input sensors. The control unit includes an output operation circuit for connecting to the actuators.

Abstract: A vehicle includes a primary air conditioning device and an auxiliary air conditioning device each having a condenser, a receiver drier, an evaporator, and an expansion valve, an electrical air conditioning compressor coupled to the primary and the auxiliary air conditioning devices for operating the primary and the auxiliary air conditioning devices, and an alternator coupled to the electrical air conditioning compressor for energizing the electrical air conditioning compressor to operate the primary and the auxiliary air conditioning devices, and for allowing the auxiliary air conditioning device to be actuated to supply the cooling air to cool the vehicle even when the engine of the vehicle is shut off.

Abstract: A vehicle includes a primary air conditioning device and an auxiliary air conditioning device each having a condenser, a receiver drier, an evaporator, and an expansion valve, an electrical air conditioning compressor coupled to the primary and the auxiliary air conditioning devices for operating the primary and the auxiliary air conditioning devices, and an alternator coupled to the electrical air conditioning compressor for energizing the electrical air conditioning compressor to operate the primary and the auxiliary air conditioning devices, and for allowing the auxiliary air conditioning device to be actuated to supply the cooling air to cool the vehicle even when the engine of the vehicle is shut off.

Abstract: A temperature test unit includes two thermometers each having a probe for detecting a temperature at a heat exchanging system, a processing mechanism electrically connected to the thermometers for receiving and processing the temperature readouts, and for obtaining a temperature difference between the temperature readouts, and a displayer device electrically connected to the processing mechanism and having two portions for displaying the temperature readouts of the thermometers, and another portion for displaying the temperature difference between the temperature readouts of the thermometers and for allowing the user to diagnose the problem in the heat exchanging system correctly and instantly.