A dual motor configuration 10 is provided for driving two fans for moving
air to cool an engine. The dual motor configuration includes a primary brushless
motor 18 constructed and arranged to be electronically controlled to drive
a first fan 16 over a range of speeds. A secondary brush motor 24 is
constructed and arranged to be electronically controlled to drive a second fan
22 over a range of speeds. The secondary brush motor includes an electronic
switching device 26 associated therewith for receiving a pulse width modulated
signal for controlling speed of the secondary brush motor. Thus, different combinations
of speeds of the first and second motors can be selectively chosen to meet cooling requirements.