Self-contained roof-mounted vehicle air-conditioning system
Vehicle heating and cooling system
Auxiliary power unit for vehicles
Mobile emergency medical vehicle with auxiliary engine/generator providing AC/DC output
Method of operating a transport refrigeration system Patent #: 4720980
ApplicationNo. 07/161722 filed on 02/29/1988
US Classes:307/9.1, VEHICLE MOUNTED SYSTEMS123/142.5R, WITH HEATING MEANS219/202, Vehicle or vehicle component307/150, Power packs307/64, Substitute or emergency source62/236, WITH ALTERNATELY USABLE ENERGY SOURCES62/239, WITH VEHICLE FEATURE62/323.1WITH INTERNAL-COMBUSTION ENGINE
ExaminersPrimary: Shoop, William M. Jr.
Assistant: Ip, Paul
Attorney, Agent or Firm
International ClassB60P 3/20 (20060101)
AbstractThe present invention entails a power switching system for a tractor-trailer that can be selectively actuated to direct power to the tractor unit from an auxiliary power source such as a refrigeration unit mounted on the trailer. When the tractor-trailer is in a parked position, power can be furnished to the tractor and to energy consuming components thereof through an auxiliary power source carried by the tractor-trailer, thereby improving the total fuel economy of the rig. In the power switching system of the present invention, there is provided a switch assembly for operatively connecting run, accessory, start/ignition circuits to the auxiliary power source. In addition, an oil and water heater circuit can be powered through the same auxiliary power source. Finally, a trickle charge may even be directed from the auxiliary power source to the battery of the tractor engine.