1994-09-01

Development of Electronic Fan Control Systems 941765

Engine cooling fan systems for off-highway machinery require a significant amount of horsepower and contribute to the overall noise level of the machine. Reducing fan speed in times of low cooling demand provides a means to reduce vehicle noise levels and divert engine horsepower from the fan to do productive work. The fan must, however, continue to provide adequate airflow when demanded by the cooling system. Electronic fan controls that modulate fan speed to meet changing cooling system requirements provide the above advantages.

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