HYBRID ELECTRIC WORKING VEHICLE AND CONTROL METHOD THEREOF
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United States of America Patent
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Issued Date -
Jan 26, 2012
app pub date -
Jun 29, 2011
filing date -
Jul 23, 2010
priority date (Note) -
Abandoned
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Abstract
The present disclosure relates to a hybrid working vehicle which determines the change of load by using a displacement of a flyweight or flyball in a governor, and controls a motor-generator according to the change of load, and a control method thereof. The hybrid working vehicle detects the change of load based on the displacement of the flyweight or flyball measured by a displacement measuring device, operates a motor-generator as a motor to supplement the power in a case where the load increases, and operates the motor-generator as an electric generator to collect energy in a case where the load decreases. In this way, revolution per minute (RPM) of a diesel engine may be detected rapidly and accurately based on the displacement of the flyweight or flyball without installing any complicated apparatus such as a torque measuring device which measures torque of a load, and accordingly controls the motor-generator so as to enhance the energy efficiency of the hybrid working vehicle and to improve the comfortable feeling of a driver.
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