A Hybrid Drive System Based on Synchronizer Coupling with Dual Clutch DCT

Abstract

The invention discloses a dual clutch transmission (DCT) hybrid power drive system based on synchronizer coupling. The system comprises an internal combustion engine, an ISG motor which is integrated at the front end of a dual clutch transmission and the dual clutch transmission which is connected with a differential mechanism mounted at a rotating shaft of an automobile wheel, wherein the dual clutch transmission comprises an odd input shaft and an even input shaft which are connected with an engine, the rotating shaft of the motor and an output shaft; the front end of the output shaft is supported in a motor input shaft gear inner circular hole by a needle bearing; the rear end is supported on a transmission rear end shell by a bearing; the ISG motor is capable of realizing dynamic coupling or decoupling with the engine in full gears to realize various working modes of the hybrid power system. The arrangement of a reverse gear is omitted in the hybrid power drive system, the hybrid power drive system is compact in structure and easy to control, and the engineering application prospects are wide.

Description

technical field [0001] The invention relates to a hybrid power drive system, in particular to a hybrid power drive system based on synchronizer-coupled double-clutch DCT. Background technique [0002] Hybrid vehicles combine traditional internal combustion engines, electric drive devices and energy storage devices, and through good matching and optimized control, achieve optimal energy distribution to achieve new energy vehicles with low fuel consumption and low emissions. Hybrid vehicles can not only give full play to the advantages of internal combustion engine vehicles and electric vehicles, but also avoid their respective shortcomings, and hybrid technology is relatively less dependent on power batteries, so hybrid vehicles are used as transitional products between traditional internal combustion engine vehicles and pure electric vehicles It will be the market leader for a long time in the future, so the performance of hybrid electric vehicles is particularly important. ...

AI Technical Summary

Problems solved by technology

The hybrid models equipped with dual-clutch automatic transmissions that have been launched so far mainly include: Honda's hybrid system "SH-AWD System", Volkswagen's diesel hybrid vehicle "GolfTDI Hybrid", Mitsubishi Fuso trucks and buses, and BMW VisionEfficientDynamics concept car; in China , BYD Automobile Co., Ltd. has developed a hybrid vehicle equipped with a 6-speed DCT dry-type dual-clutch automatic transmission and has launched it on the market. The motor is placed behind the DCT gearbox, which has the advantages of small changes to the traditional dual-clutch automatic transmission car and convenient layout. However, since the motor is located at the rear, the required motor power and battery capacity are relatively large. At the same time, the motor only outputs power through a pair of gears with a fixed speed ratio, and the speed of the motor cannot be adjusted by the transmission gear.

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