Single-motor hybrid power speed change system

Abstract

The invention provides a single-motor hybrid power speed change system, and the system comprises an engine, an engine input shaft, an engine output shaft, a motor, a motor input shaft, a differentialmechanism and an intermediate shaft, wherein the engine is connected with the engine input shaft through a torsion damper, and a first-gear driving gear, a second-gear driving gear, a third-gear driving gear and a fourth-gear driving gear are sequentially arranged on the engine input shaft; an output shaft gear, a first-gear driven gear, a second-gear driven gear, a third-gear driven gear and a fourth-gear driven gear are sequentially arranged on the engine output shaft, the engine output shaft gear is meshed with a gear of the differential mechanism, and the first-gear driven gear, the second-gear driven gear, the third-gear driven gear and the fourth-gear driven gear are meshed with the first-gear driving gear, the second-gear driving gear, the third-gear and the fourth-gear respectively; and the motor input shaft gear is meshed with the intermediate shaft gear. According to the invention, the system is compact in structure, multi-gear drive in a pure electric drive mode is achieved,oil consumption of a vehicle is reduced, and the economy of the vehicle is improved.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, in particular to a single-motor hybrid transmission system. Background technique [0002] At present, pure electric vehicles are restricted by cruising range and charging facilities, and the marketization process is seriously hindered. Hybrid vehicles have many advantages such as convenient refueling, energy saving and environmental protection, and long cruising range, and have become a new trend in the current industry development. According to the number of motors, hybrid models can be divided into: single-motor hybrid and dual-motor hybrid. In the single-motor hybrid, the hybrid system can be installed on the vehicle without major changes to the traditional vehicle, and the cost is relatively low. Many manufacturers are also struggling to carry out research. The existing power architecture includes P1 and P3. The P1 architecture is a hybrid architecture in which the motor is...

AI Technical Summary

Problems solved by technology

In the P3 architecture, the motor is directly coupled to the output shaft, the number of gear pairs meshing in the power transmission path is small, the oil churning loss is relatively small, and the efficiency is higher in the pure electric drive and braking energy recovery process, but this architecture does not have the function of parking power generation And the gear position of the gearbox cannot be used, and the load adjustment flexibility is low

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