Power system of strong hybrid electric vehicle

Abstract

The invention relates to a power system of a strong hybrid electric vehicle. The power system comprises an engine, a driving motor and a speed changer, a drive gear is fixed to a rotation shaft of thedriving motor in the peripheral direction, and a driven gear sleeves the input shaft of the speed changer in an empty set mode and meshes with the drive gear; the output shaft of the engine is connected with the input shaft of the speed changer through a first clutch, the first clutch is a one-way clutch, an outer race of the one-way clutch is fixedly connected with the output shaft of the engine, and an inner race of the one-way clutch is fixedly connected with the input shaft of the speed changer; the driven gear is connected with the input shaft of the speed changer through a second clutch, a drive disk of the second clutch is fixedly connected with the driven gear, and a driven disk of the second clutch is fixedly connected with the input shaft of the speed changer. According to the power system, power transmission is simple and effective, the power transmission efficiency is high, and energy recovery is achieved.

Description

technical field [0001] The invention relates to the field of hybrid electric vehicles, in particular to a power system of a strong hybrid electric vehicle. Background technique [0002] At present, only the hybrid electric vehicle has the most practical value and has been commercially operated. It has good power, low emission, is very beneficial to environmental protection, and has a promising development prospect. According to the degree of dependence on electric energy, hybrid electric vehicles can be divided into weak hybrid, moderate hybrid, strong hybrid and plug-in hybrid. Among them, the power system of a strong hybrid vehicle can make full use of the motor, which can save about 40% of fuel, which is more conducive to energy saving and emission reduction. At present, the power system of a common strong hybrid vehicle consists of an engine, a drive motor, and a transmission. However, because the output shaft of the engine is directly connected to the input shaft of th...

AI Technical Summary

Problems solved by technology

At present, the power system of a common strong hybrid vehicle consists of an engine, a drive motor, and a transmission. However, because the output shaft of the engine is directly connected to the input shaft of the transmission, the drive motor is directly connected to the input shaft of the transmission through a pair of gears. As a result, the power of the engine and drive motor will be directly transmitted to the transmission

In the pure electric drive mode, the drive motor will simultaneously drive the output shaft of the engine to rotate together. At the same time, in the single-engine drive mode, the engine will also drive the drive motor shaft to rotate together. Increased energy loss and reduced transmission efficiency of the power system

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