Regulating strategy for electromechanically power-branching hybrid drives
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Abstract
A method for regulating an electromechanically power-splitting hybrid drive system of a motor vehicle, having an internal combustion engine and two electric motors that are coupled by way of a transmission, as well as an electromechanically power-splitting hybrid drive system for a motor vehicle. It is proposed that, based on coupling conditions of the transmission, respective target rotation speeds and target torques be calculated for the internal combustion engine and the two electric motors; that the respective target rotation speeds be compared with corresponding actual rotation speeds of the internal combustion engine and of the electric motors; and that in the case of a system deviation between one of the actual rotation speeds and the corresponding target rotation speed, one or more additional torques be calculated on the basis of the system deviation and be taken into account, in addition to the target torque or torques calculated by the control system, in controlling the torque of the internal combustion engine and of the two electric motors.
16 Citations
20 Claims
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1-10. -10. (canceled)
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11. An electromechanically power-splitting hybrid drive system for a motor vehicle that includes an internal combustion engine, a first electric motor, a second electric motor, and a transmission coupling the first electric motor and the second electric motor, the hybrid drive system comprising:
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a control system that, based on a coupling condition of the transmission, calculates respective target rotation speeds and target torques for the internal combustion engine, the first electric motor, and the second electric motor; and
a plurality of rotation speed controllers for the internal combustion engine, the first electric motor, and the second electric motor, wherein;
the rotation speed controllers compare the calculated target rotation speeds with the pertinent actual rotation speeds, and in the case of a system deviation between one of the actual rotation speeds and the pertinent target rotation speed, the rotation speed controllers calculate, on the basis of the system deviation, at least one additional torque that are taken into account, in addition to at least one of the target torques calculated by the control system, in controlling the torque of the internal combustion engine, the first electric motor, and the second electric motor. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method for regulating an electromechanically power-splitting hybrid drive system of a motor vehicle that includes an internal combustion engine, a first electric motor, a second electric motor, and a transmission coupling the first electric motor and the second electric motor, the method comprising:
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based on coupling conditions of the transmission, calculating respective target rotation speeds and target torques for the internal combustion engine, the first electric motor, and the second electric motor;
comparing the respective target rotation speeds with corresponding actual rotation speeds of the internal combustion engine, the first electric motor, and the second electric motor;
in the case of a system deviation between one of the actual rotation speeds and the corresponding target rotation speed, calculating at least one additional torque on the basis of the system deviation, and taking into account the at least one additional torque, in addition to the target torques, in controlling the torque of the internal combustion engine, the first electric motor, and the second electric motor. - View Dependent Claims (19, 20)
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Specification