Method of controlling generated power in series hybrid vehicle
First Claim
1. A method of controlling a generated power to be executed in a series hybrid vehicle, said series hybrid vehicle including an engine, a generator, a battery and a motor, the generator being driven by the engine, the motor being driven by said generated power of the generator and a discharged power of the battery, the battery being charged by said generated power;
- said method comprising;
a first step of controlling, for each of successive periods, said generated power in accordance with a target power to be generated;
a second step of detecting, while controlling the generated power, a plurality of times in a single period, a prediction base quantity indicating both an instantaneous motor output of said motor and a direction of change of the instantaneous motor output; and
a third step of determining, on a basis of said prediction base quantity, a target power to be generated in a coming period.
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Abstract
A method of controlling a generated power in a series hybrid vehicle. From the tendency of an inverter input power or a motor dissipation power in a certain period is first estimated the tendency of the inverter input power or the motor dissipation power in the next period. The target power to be generated is then set on the basis of the results of the estimation. Alternatively the target power to be generated is corrected in accordance with the quantities such as an accelerator angle indicating the load of the motor or a battery current indicating the state of charge/discharge of the battery. Alternatively that period is compulsorily interrupted to start the next period. This will eliminate a delay arising from averaging the inverter input powers or the motor dissipation powers for use as the target power in the next period, thus resulting in improved vehicle power efficiency and drive feeling.
79 Citations
20 Claims
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1. A method of controlling a generated power to be executed in a series hybrid vehicle, said series hybrid vehicle including an engine, a generator, a battery and a motor, the generator being driven by the engine, the motor being driven by said generated power of the generator and a discharged power of the battery, the battery being charged by said generated power;
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said method comprising; a first step of controlling, for each of successive periods, said generated power in accordance with a target power to be generated; a second step of detecting, while controlling the generated power, a plurality of times in a single period, a prediction base quantity indicating both an instantaneous motor output of said motor and a direction of change of the instantaneous motor output; and a third step of determining, on a basis of said prediction base quantity, a target power to be generated in a coming period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification