Rule-based torque distribution control method for four-wheel drive phev

Abstract

The invention discloses a rule-based four-wheel drive PHEV torque distribution control method, which specifically includes the following steps: step 1, determining the driver's demand torque in stages; step 2, judging the vehicle according to different driver demand torques The current working mode; step 3, determine the best working range of the engine and power battery; step 4, according to the current working mode of the vehicle, with the goal of making the engine work at the best fuel economy torque curve, and distribute the power of the vehicle power system The torque of the source; the present invention comprehensively considers the difference in the high-efficiency range of each power source of the plug-in hybrid electric vehicle, reasonably allocates the driver's demand torque, and satisfies the vehicle power and power system constraints. Improve vehicle fuel economy and reduce exhaust emissions.

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...

AI Technical Summary

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 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 hybrid electric vehicles, resulting in reduced fuel economy and poor power performance of vehicles , the problem of increased fuel volume and exhaust emissions

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