Dual motor configuration with primary brushless motor and secondary integrated speed control motor
First Claim
1. A dual motor configuration for driving two fans for moving air to cool an engine, the dual motor configuration comprising:
- a primary brushless motor constructed and arranged to be electronically controlled to drive a first fan over a range of speeds, and a secondary brush motor constructed and arranged to be electronically controlled to drive a second fan over a range of speeds, the secondary brush motor including an electronic switching device associated therewith for receiving a variable frequency pulse width modulated signal for controlling speed of the secondary brush motor, whereby different combinations of speeds of the first and second motors can be selectively chosen to meet cooling requirements of an engine, wherein each of the primary brushless motor and the secondary brush motor is constructed and arranged to be controlled to operate over a speed range of 0 to 4000 rpm.
5 Assignments
0 Petitions
Accused Products
Abstract
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.
-
Citations
18 Claims
-
1. A dual motor configuration for driving two fans for moving air to cool an engine, the dual motor configuration comprising:
-
a primary brushless motor constructed and arranged to be electronically controlled to drive a first fan over a range of speeds, and a secondary brush motor constructed and arranged to be electronically controlled to drive a second fan over a range of speeds, the secondary brush motor including an electronic switching device associated therewith for receiving a variable frequency pulse width modulated signal for controlling speed of the secondary brush motor, whereby different combinations of speeds of the first and second motors can be selectively chosen to meet cooling requirements of an engine, wherein each of the primary brushless motor and the secondary brush motor is constructed and arranged to be controlled to operate over a speed range of 0 to 4000 rpm. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method of controlling a dual motor configuration for driving first and second fans for moving air to cool an engine, the dual motor configuration including a primary brushless motor for driving the first fan over a speed range of 0 to 4000 rpm, and a secondary brush motor for driving the second fan over a speed range of 0 to 4000 rpm, the secondary brush motor including a electronic switching device associated therewith, the method including:
-
receiving, at the primary brushless motor, a control signal to control operation of the primary brushless motor, and receiving, at the electronic switching device, a variable frequency pulse width modulated control signal to control operation of the secondary brush motor, such that different combinations of speeds of the first and second motors can be selectively chosen to meet cooling requirements of an engine. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A dual motor configuration for driving two fans for moving air to cool an engine, the dual motor configuration comprising:
-
a primary brushless motor constructed and arranged to be electronically controlled to drive a first fan over a speed range of 0 to 4000 rpm, and a secondary brush motor constructed and arranged to be electronically controlled to drive a second fan over a speed range of 0 to 4000 rpm, the secondary brush motor including means for switching associated therewith for receiving a variable frequency pulse width modulated signal, whereby different combinations of speeds of the first and second motors can be selectively chosen to meet cooling requirements of an engine. - View Dependent Claims (18)
-
Specification