Hybrid electric vehicle (HEV) mode switching process control device and method

Abstract

The invention discloses a hybrid electric vehicle (HEV) mode switching process control device and method. The HEV mode switching process control device comprises an engine, a clutch, a motor, a general control unit, an engine ECU controller, a transmission TCU controller and a motor MCU controller, and an output shaft of the engine is connected with a rotating shaft of the motor through the clutch; the general control unit is connected with the engine through the engine ECU controller, the general control unit is connected with the clutch through the transmission TCU controller, and the general control unit is connected with the motor through the motor MCU controller; and rotating speed sensors are arranged on the engine and the motor correspondingly, the clutch is provided with a pressuresensor, and the rotating speed sensors and the pressure sensor are all connected with the general control unit. According to the HEV mode switching process control device and method, the structure issimple, operation is convenient, through two fuzzy controllers of the transmission TCU controller, vehicle dynamic impact is suppressed, and the advantages of easy control and the high control efficiency are further achieved.

Description

technical field [0001] The invention relates to an HEV mode switching process control device and method. Background technique [0002] A hybrid electric vehicle (HEV) refers to a vehicle whose drive system uses an engine and an electric motor as a power source, and has various working modes such as pure electric, engine drive, and hybrid drive. In recent years, hybrid vehicles have been considered as an effective solution that promises to reduce fuel consumption and air pollution. However, during the mode switching process of a parallel hybrid electric vehicle, the clutch intervenes in the power system, which may easily cause a sudden change in the output torque of the system, resulting in an excessive power impact on the vehicle; and the switching process must ensure the service life of the clutch and reflect the driving intention of the driver. At present, there are few studies that can simultaneously take into account the small power impact, long clutch life and adequate...

AI Technical Summary

Problems solved by technology

However, during the mode switching process of a parallel hybrid electric vehicle, due to the clutch intervening in the power system, it is easy to cause a sudden change in the output torque of the system, resulting in an excessive power impact of the vehicle; and the switching process also needs to ensure the service life of the clutch and reflect the driving intention of the driver.

At present, there are few studies that can take into account small power impact, long clutch life and adequate reflection of driving intention when switching modes, and there is also a lack of corresponding effective control methods

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