HYBRID POWER SYSTEM AND ITS CONTROLLING METHOD
First Claim
Patent Images
1. A hybrid power system, comprising:
- an engine;
a clutch;
a transmission having an input shaft and an output shaft, wherein the engine is connected to the input shaft of the transmission by the clutch;
an energy storage device;
an electric motor having an output shaft, the motor connected to the energy storage device; and
wherein the output shaft of the transmission is operatively coupled with the output shaft of the motor to provide a coupled power output.
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Abstract
A hybrid power system includes an engine, a clutch, a transmission, a motor and an energy storage device. The motor is connected to the energy storage device and the engine is connected to the input shaft of the transmission by the clutch. The output shaft of the transmission is operatively coupled with the output shaft of the motor to provide a coupled power output.
29 Citations
14 Claims
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1. A hybrid power system, comprising:
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an engine; a clutch; a transmission having an input shaft and an output shaft, wherein the engine is connected to the input shaft of the transmission by the clutch; an energy storage device; an electric motor having an output shaft, the motor connected to the energy storage device; and wherein the output shaft of the transmission is operatively coupled with the output shaft of the motor to provide a coupled power output.
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2. A method for controlling a hybrid power system, the hybrid power system including an engine, a clutch, a transmission coupled to the engine, an electric motor, and an energy storage device coupled to the motor, the method comprising the steps of:
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setting a work mode based on a current vehicle velocity and a storage level of the energy storage device, wherein the work mode is set as an electric-only power mode or a parallel mode; if the work mode is set to the electric-only power mode, then assigning a power level such that an output power of the motor is based on the power demanded, and wherein the output power of the engine is 0; and if the work mode is set to the parallel mode, then assigning a power level such that an output power of the engine and an output power of the motor are both assigned based on a rotational speed of the engine. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer readable memory encoded with data representing a computer program for a hybrid power system, the hybrid power system including an engine, a clutch, a transmission coupled to the engine, an electric motor, and an energy storage device coupled to the motor, the computer readable memory causing the computer to perform the acts of:
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setting a work mode based on a current vehicle velocity and a storage level of the energy storage device, wherein the work mode is set as an electric-only power mode or a parallel mode; if the work mode is set to the electric-only power mode, then assigning a power level such that an output power of the motor is based on the power demanded, and wherein the output power of the engine is 0; and if the work mode is set to the parallel mode, then assigning a power level such that an output power of the engine and an output power of the motor are both assigned based on a rotational speed of the engine.
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Specification