Vehicle Rooftop Engine Cooling System

摘要

A method of using an engine cooling system with a bus includes providing a horizontal rooftop engine cooling system including a radiator unit through which coolant fluid flows for removing heat from the radiator unit, a fan to assist in removing heat from the radiator unit, and a continuously variable power drive and speed control system for controlling power to and the speed of the fan; horizontally locating the rooftop engine cooling system on a rooftop of the bus; interconnecting the radiator unit of the rooftop engine cooling system to a passage of an engine of the bus to allow coolant to flow between the engine and the rooftop cooling system to cool the engine; and controlling power to and the speed of the fan with the continuously variable power drive and speed control system using pulse width modulation.