Chassis dynamometer construction

Details Chassis dynamometer construction Chassis dynamometer construction

G - Physics

01

M

73/157

G01M 15/00 (2006.01) G01M 17/007 (2006.01)

Patent

CA 1263258

CHASSIS DYNAMOMETER CONSTRUCTION ABSTRACT OF THE DISCLOSURE A chassis dynamometer has a number of rotary units corresponding to the number of wheels of a vehicle to be tested, each of the rotary units constituting a synchronous electric motor independent of one another. Each motor is coupled to an electric power source via a single frequency control unit which is operable to adjust the frequency of electric current supplied to the motors. All motors operate at a uniform speed and each motor is coupled to a torque responsive load cell operable to generate a signal in response to a change in torque of the associated motor. Each load cell is coupled to a summing circuit unit which also is coupled to the frequency control unit for adjusting the latter in accordance with an average of changes in the torque.

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