Automotive three-clutch hybrid power transmission system

Abstract

An automotive three-clutch hybrid power transmission system is composed of an engine, a dual mass flywheel, a generator, an energy storage device, a motor, three clutches, two input shafts, two output shafts, six idler gears, seven fixed gears and five synchronizers. The automotive three-clutch hybrid power transmission system is characterized in that the engine is connected with the double clutch through the dual mass flywheel, the generator is connected with the double clutch and the energy storage device, and the motor is connected with the energy storage device and the third clutch; the first input shaft is connected with the first clutch and the third clutch, the second input shaft is connected with the second clutch, the second input shaft and the second output shaft are both hollow shafts and are arranged on the first input shaft and the first output shaft respectively in a nested mode, and the first input shaft and the first output shaft are arranged in a spatially parallel mode. The automotive three-clutch hybrid power transmission system has the advantages that gear shifting is convenient, power failure is avoided, the hybrid power transmission path is clear, the structure is compact, multiple work modes can be achieved, energy utilization efficiency is high, and good comprehensive performance is achieved.

Description

technical field [0001] The invention belongs to the field of hybrid power transmission, and in particular relates to a three-clutch hybrid power transmission system for a vehicle. Background technique [0002] Today, when energy saving and environmental protection have become the mainstream of the development of the automobile industry, hybrid electric vehicles have become the key core technology for the vigorous development of automobile manufacturers in various countries. Among them, the plug-in hybrid solution, as the most fuel-efficient hybrid solution other than pure electric, is being respected by major manufacturers. The plug-in hybrid is mainly composed of a relatively small-displacement engine and one or two electric motors. Generally, the electric motor is responsible for achieving pure electric power output and braking energy recovery at low and medium speeds, and realizing engine power output when needed. Functions such as starting and the engine generating elec...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, CN101920652 discloses a series / parallel dual-motor multi-clutch hybrid drive unit for vehicles. However, in this unit, on the one hand, the working modes are not complete enough, and there are no working modes such as hybrid connection, which cannot meet the needs of vehicles. The power requirements of various complex working conditions during actual driving; on the other hand, in the working mode where the engine provides power alone, the shifting process is more complicated, and two clutches need to be engaged at the same time

In addition, the number of shifting gears that can be realized is small, which cannot meet the actual driving needs of the vehicle

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