Method of operating a hybrid drive system
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Accused Products
Abstract
In a hybrid drive having an electric motor which can be switched between the motor mode and the generator mode, the electric motor is switched between its operating modes as a function of the differential efficiency of the internal combustion engine when the internal combustion engine is operating, in which case the generator power can then be controlled in proportion to the differential efficiency, and the motor power can be controlled in inverse proportion to the differential efficiency.
55 Citations
12 Claims
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1-5. -5. (canceled)
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6. In a system comprising an internal combustion engine, an electric motor, a battery electrically coupled to the electric motor and a sensor for recording a state of charge of the battery, wherein i) the motor can be switched between operation in a motor mode and operation in a generator mode, and ii) the motor can be mechanically coupled to the internal combustion engine and/or to an output drive of the system for the purpose of driving said system or for the purpose of said internal combustion engine or said output drive of the system driving the motor in the generator mode, a method of operating said motor, wherein:
when the internal combustion engine is operating and is coupled to the output drive, the electric motor operates, predominantly in the generator mode only when the load on the internal combustion engine is in a first, relatively lower, range;
and predominantly in the motor mode when the load on the internal combustion engine is in a second relatively higher, range. - View Dependent Claims (7, 8, 9, 10, 11, 12)
Specification