A transportation refrigeration system is provided and includes a trailer refrigeration unit (TRU), a battery to provide electricity for the TRU, an electrical system and a controller. The electrical system includes a direct current (DC) bus electrically in...

A system for controlling an air flow rate into a vehicle engine room may include a fan shroud in which a cooling fan including a fan motor and a fan blade may be mounted, a rotary shutter which may be provided in the fan shroud while corresponding to an op...

Disclosed is an air conditioning system for vehicles capable of operating control with a high degree of operating efficiency even in operating states wherein efficiency would be expected to decline, and while adhering to conventional control ideas. The air...

This invention relates to a method of controlling air conditioner for vehicles wherein the target control value of the pressure control valve which controls tilt angle of a swash-plate of a swash-plate type variable capacity compressor is variably controll...

A vehicle air conditioning apparatus includes a refrigerant circulation circuit. The vehicle air conditioning apparatus has a variable displacement type compressor (10), a first pressure monitoring point (P1), a second pressure monitoring point (P2) and an...

The method involves regulating a compressor's coolant suction pressure, whereby the actual suction processor value is determined and regulated by suitably controlling the compressor to a predefinable desired value. The coolant temperature is detected at pr...