Method for controlling hybrid power vehicle

Abstract

The invention discloses a method for controlling a hybrid power vehicle. The method comprises the following steps of: according to the arrangement form of transmission parts of the hybrid power vehicle, dividing operating modes; determining an efficiency calculation formula of each operating mode; and according to the size of a requirement torque Tr and a range of a state of charge (SOC) value of a storage battery, determining possible operating modes, respectively calculating system efficiency in different operating modes, and comparing the efficiency of a hybrid power system in the different operating modes to obtain the allocation situation of engine torques and motor torques with the highest efficiency. In the process of meeting the requirement torque, based on the method for controlling the hybrid power vehicle with the optimum system efficiency, the transmission parts operate in respective high-efficiency areas, so that the overall efficiency of the whole transmission system is maximized, the power loss of the system is reduced, the consumption and discharge of the fuel oil of the whole vehicle are reduced, lubricating conditions are guaranteed to a certain extent, and the service life of the transmission parts is prolonged to a certain extent.

Description

technical field [0001] The invention relates to a vehicle control technology, in particular to a hybrid vehicle control method. Background technique [0002] Energy saving and environmental protection are the two major themes in the development of the automobile industry today. Hybrid vehicles have two types of on-board energy sources, one is an energy source with high energy density - the engine, and the other is an energy source with high power density - the electric motor, which is combined with a battery as an energy storage device. The good matching and optimal control between them can give full play to the advantages of traditional vehicles and pure electric vehicles and avoid their respective shortcomings. It is the most practical low-emission and low-fuel consumption vehicle for development today. [0003] In the existing hybrid electric vehicle control methods, the efficiency of the engine is often considered, but the efficiency of the entire transmission system is...

AI Technical Summary

Problems solved by technology

[0003] In the existing hybrid electric vehicle control methods, the efficiency of the engine is often considered, but the efficiency of the entire transmission system is not considered enough, resulting in large power loss. Higher power loss will reduce the efficiency of the transmission device and make the lubricating oil excessive Early deterioration, deteriorating lubrication conditions, and shortening the service life of transmission components

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