System and Method for Controlling an Engine Cooling Fan

摘要

A system and method of operating a cooling system for a vehicle engine, wherein one or more motors are operable to rotate one or more fans. Each of the one or more motors is controlled by a motor controller associated with the motor, in response to a control signal received from a system controller and an enable signal received from the vehicle. The motor controller operates the motor at a speed based upon the control signal if the control signal is received, and operates the motor at a predetermined speed if the control signal is not received but the enable signal is received.

主权项

1. A cooling system for a vehicle, the cooling system powered by a power source, the cooling system comprising:
a heat exchanger; a system controller; a motor; a fan driven by the motor; and a motor controller electrically connected to the system controller, the power source, and the motor, the motor controller configured to
receive power from the power source,receive an enable signal from the vehicle, andreceive a control signal from the system controller, wherein upon receiving the control signal, the motor controller operates the motor at a first speed based on the control signal; and wherein upon not receiving the control signal but receiving the enable signal, the motor controller operates the motor at a second speed.