VEHICLE HYBRID POWER SYSTEM AND METHOD FOR CREATING SIMULATED EQUIVALENT FUEL CONSUMPTION MULTIDIMENSIONAL DATA APPLICABLE THERETO
First Claim
1. A vehicle hybrid power system, which comprises:
- a battery, which is for providing electrical power;
a motor, which is driven by the electrical power provided by the battery;
an engine, which is driven by burning fuel;
a generator, which is driven by the engine to generate electricity, the generator being for charging the battery;
a clutch, which is for engaging or disengaging the motor and the engine such that they either separately or jointly power the vehicle;
a power output unit, which is for outputting power provided by the engine and the motor;
a memory unit, which is for saving simulated equivalent fuel consumption multi-dimensional data obtained via minimum and maximum physical allowed values of system control parameters, system state parameters, and system negative load parameters;
a system parameter detection unit, which is for detecting system state parameters and system negative load parameters; and
a vehicle control unit, which is loaded with parameters detected by the system parameter detection unit, and, based on input system state parameters and system negative load parameters, acquires minimum simulated equivalent fuel consumption and its corresponding system control parameters from the simulated equivalent fuel consumption multidimensional data saved in the memory unit, and then accordingly separately controls the actions of the engine, the motor, the clutch, and the generator based on the acquired system control parameters.
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Abstract
A vehicle hybrid power system is provided according to the present invention. The hybrid power system is characterized by applying the concept of minimum equivalent fuel consumption, and then simulating equivalent fuel consumptions based on respective energy consumption or increase of motor and generator of a motor vehicle, and also defining simulated equivalent fuel consumption formula and making a list of system state parameters, system control parameters, and system negative load parameters, thereby obtaining simulated equivalent fuel consumption multidimensional data by entering the system parameters derived from a discretization/transformation process in the defined simulated equivalent fuel consumption formula; wherein, the simulated equivalent fuel consumption multidimensional data are revised to comprise subsystems, such as system engine, motor, generator, and others to determine a system control strategy of holistic optimization, thereby achieving the objective of saving energy. The present invention further provides a method for creating simulated equivalent fuel consumption multidimensional data, which is applicable to the hybrid power system of the present invention.
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Citations
10 Claims
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1. A vehicle hybrid power system, which comprises:
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a battery, which is for providing electrical power; a motor, which is driven by the electrical power provided by the battery; an engine, which is driven by burning fuel; a generator, which is driven by the engine to generate electricity, the generator being for charging the battery; a clutch, which is for engaging or disengaging the motor and the engine such that they either separately or jointly power the vehicle; a power output unit, which is for outputting power provided by the engine and the motor; a memory unit, which is for saving simulated equivalent fuel consumption multi-dimensional data obtained via minimum and maximum physical allowed values of system control parameters, system state parameters, and system negative load parameters; a system parameter detection unit, which is for detecting system state parameters and system negative load parameters; and a vehicle control unit, which is loaded with parameters detected by the system parameter detection unit, and, based on input system state parameters and system negative load parameters, acquires minimum simulated equivalent fuel consumption and its corresponding system control parameters from the simulated equivalent fuel consumption multidimensional data saved in the memory unit, and then accordingly separately controls the actions of the engine, the motor, the clutch, and the generator based on the acquired system control parameters. - View Dependent Claims (2, 3, 4, 5)
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6. A method for creating simulated equivalent fuel consumption multidimensional data that is applicable to a vehicle hybrid power system, which comprises the following steps:
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(1) inputting the minimum and maximum physically allowed values for the system control parameters, system state parameters, and system negative load parameters, and then performing a discretization process on these parameters within the scope of their allowed values; and (2) entering the system parameters derived from the discretization process into the following defined equivalent fuel consumption formulas for creating the simulated equivalent fuel consumption multidimensional data;
the equivalent fuel consumption formulas being;
{dot over (m)}EF={dot over (m)}e−
PFISG×
{dot over (m)}ISG+PFm×
{dot over (m)}m
{dot over (m)}e=BSFCe(Te,Ne)×
(Te×
Ne)
{dot over (m)}m=mBSFCm×
(Tm×
Nm)
{dot over (m)}ISG=mBSFCISG×
(TISG×
Ne)wherein, {dot over (m)}EF is the system simulated equivalent fuel consumption required by the system for providing the system negative load torque, {dot over (m)}e is the engine fuel consumption required by the engine for providing the engine output torque, {dot over (m)}m is the motor simulated equivalent fuel consumption required by the motor for providing the motor output torque, {dot over (m)}ISG is the generator simulated equivalent fuel consumption required for inputting torque to the generator, Te is the engine output torque, Ne is the engine output rotation speed, BSFCe(Te,Ne) is the engine fuel consumption efficiency determined by the engine output torque and rotation speed, Tm is the motor output torque, Nm is the motor output rotation speed, mBSFCm is the equivalent fuel consumption efficiency of the motor, TISG is the generator input toque, NISG is the generator input rotation speed, mBSFCISG is the equivalent fuel consumption efficiency of the generator, PFISG is the penalty factor for the generator to battery charge; and PFm is the penalty factor for the battery consumption on the motor; - View Dependent Claims (7, 8, 9, 10)
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Specification