Rule-based all-wheel drive PHEV torque distribution control method

A torque distribution and control method technology, applied in the direction of control devices, driver input parameters, climate sustainability, etc., can solve the problems of reduced fuel economy, poor power performance, increased fuel volume and exhaust emissions of vehicles, etc. , to achieve the effect of improving fuel economy

Active Publication Date: 2019-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Claims
  • Application Information

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Problems solved by technology

[0002] Plug-in hybrid electric vehicles have become a research hotspot because of their long driving range and low fuel consumption and the advantages of zero-emission pure electric vehicles; The common basis of the power system, different forms of energy sources and their flexible flow directions highlight the necessity of vehicle energy management. How to comprehensively consider the differences in the high-efficiency ranges of the engine and the motor, and ration

Method used

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  • Rule-based all-wheel drive PHEV torque distribution control method
  • Rule-based all-wheel drive PHEV torque distribution control method
  • Rule-based all-wheel drive PHEV torque distribution control method

Examples

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Embodiment

[0107] Use MATLAB / Simulink to build a vehicle controller with the function of manual selection of driving modes. The top-level modules of the controller are divided into input modules, control strategy modules and output modules. The control strategy module contains three control sub-modules of driving modes; In the controller, the signals required by the input port are provided by the CRUISE vehicle model; the output port signals are the three power source switch signals, the torque control signal and the shift selection signal, which are responsible for controlling the work and operation of the three power sources in the CRUISE vehicle model. Shift schedule selection, DCT transmission adopts two-parameter economical shift schedule, and two-speed transmission adopts two-parameter dynamic shift schedule;

[0108] The ISIGHT software is used to optimize the control strategy in the vehicle controller, with the minimum fuel consumption per 100 kilometers as the optimization goal. ...

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Abstract

The invention discloses a rule-based all-wheel drive PHEV torque distribution control method. The method specifically comprises the following steps: step 1, determining the demand torque of a driver in stages; step 2, according to different demand torque of the driver, judging the current working mode of a vehicle; step 3, determining an optimal working interval of an engine and a power battery; and step 4, according to the current working mode of the vehicle, enabling the engine to work at an optimal fuel economic torque curve as a target, and distributing the torque of each power source of the vehicle power system. The difference between the efficient intervals of the power sources of the plug-in hybrid electric vehicle is comprehensively considered, the demand torque of the driver is reasonably distributed, on the premise that the vehicle dynamics and the power system constraint are met, the fuel economy of the vehicle is improved, and the emission load of the tail gas is reduced.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, in particular to a rule-based four-wheel drive PHEV torque distribution control method. Background technique [0002] Plug-in hybrid electric vehicles have become a research hotspot because of their long driving range and low fuel consumption and the advantages of zero-emission pure electric vehicles; The common basis of the power system, different forms of energy sources and their flexible flow directions highlight the necessity of vehicle energy management. How to comprehensively consider the differences in the high-efficiency ranges of the engine and the motor, and rationally distribute the torque to satisfy the power and Realizing the optimal control of vehicle energy efficiency under the premise of system constraints is the core issue of vehicle energy management; existing energy management strategies cannot give full play to the driving capabilities of each power source of hybri...

Claims

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Application Information

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IPC IPC(8): B60W20/10B60W10/06B60W10/08
CPCB60W20/10B60W10/06B60W10/08B60W2510/1005B60W2510/244B60W2520/10B60W2540/10B60W2540/12B60W2710/0666B60W2710/083Y02T10/40Y02T10/62Y02T90/14
Inventor 沈宏继刘辉李胜利张晓瑜邹永显
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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