METHOD FOR LOAD POINT DISPLACEMENT DURING HYBRID OPERATION IN A PARALLEL HYBRID VEHICLE
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Abstract
A method of load point shifting in the hybrid operation of a parallel hybrid vehicle comprising an internal combustion engine, at least one electric machine and an energy accumulator, in which at least one limit curve (A1, B1, C1, D1) is defined in the characteristic map of the specific fuel consumption of the internal combustion engine. At least one limit value (A2, B2, C2, D2) for the energy/charge state is defined for the vehicle energy accumulator, and load point shifting modes (A, B, C, D) are defined, in which the specific fuel consumption of the internal combustion engine and the energy content of the vehicle energy accumulator do not exceed a specified limit curve (A1, B1, C1, D1) or a specified limit value (A2, B2, C2, D2). Load point shifting takes place in one of the load point shifting modes or in a combination of several load point shifting modes.
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Citations
40 Claims
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1-20. -20. (canceled)
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21. A method of load point shifting in hybrid operation of a parallel hybrid vehicle, comprising an internal combustion engine, at least one electric machine and an energy accumulator, the method comprising the steps of:
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defining at least one limit curve (A1, B1, C1, D1) in a characteristic map of specific fuel consumption of the internal combustion engine; defining at least one limit value (A2, B2, C2, D2) for an energy/charge state of the energy accumulator of the vehicle; defining load point shifting modes (A, B, C, D), in which the specific fuel consumption of the internal combustion engine and the energy/charge state of the energy accumulator do not exceed a specified limit curve (A1, B1, C1, D1) or a specified limit value (A2, B2, C2, D2); and shifting the load point in either one of the defined load point shifting modes (A, B, C, D) or a combination of several of the defined load point shifting modes (A, B, C, D). - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification