Control method of hybrid power system switching

Abstract

The invention discloses a control method of hybrid power system switching. The method includes judgment of a user driving mode, gear control of gearboxes of two driving systems, processing of vehiclespeed and acceleration pedal signals, receiving of input signals of an external power system, and judgment of external conditions. According to the scheme, an engine can work under the condition thata motor cannot satisfy driving force and the motor can drive an automobile to drive in urban areas or at low speed so as to better improve the economy of the automobile, meet low speed of the automobile in urban areas and reduce oil consumption during frequent braking and staring. The engine and the motor can be smooth switched so as to avoid mis-engagement due to idle running of the gearboxes after the gearboxes and the clutches are separated.

Description

technical field [0001] The invention relates to the technical field of automobile engine idle speed control, in particular to a control method for hybrid power system switching. Background technique [0002] Facing the dual pressure of energy conservation and environmental protection, the automobile industry must vigorously develop new energy vehicles if it wants to develop sustainably. However, due to the current limitation of battery capacity, the power and cruising range of pure electric vehicles are difficult to meet the needs of most car users. Among new energy vehicles, the battery cost of pure electric vehicles is too high, and the mileage of a single charge is relatively short. To meet market expectations, therefore, major domestic and foreign auto companies have focused on the breakthrough direction of new energy vehicles on hybrid vehicles. [0003] Nowadays, hybrid electric vehicles are widely used, but traditional hybrid electric vehicles are difficult to smoot...

AI Technical Summary

Problems solved by technology

However, due to the current limitation of battery capacity, the power and cruising range of pure electric vehicles are difficult to meet the needs of most car users.

Among new energy vehicles, the battery cost of pure electric vehicles is too high, and the mileage of a single charge is relatively short. To meet market expectations, therefore, major domestic and foreign auto companies have focused on the breakthrough direction of new energy vehicles on hybrid vehicles

[0003] Nowadays, hybrid electric vehicles are widely used, but traditional hybrid electric vehicles are difficult to smoothly switch between the engine and the motor, which is prone to frustration. At the same time, it cannot prevent the gearbox from idling after the clutch of the engine and gearbox is separated, which will cause gear grinding, which is a serious problem. Defects that detract from the driving experience

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