Transmission system, transmission method and corresponding vehicle

Abstract

The invention discloses a transmission system comprising an engine, a first motor and a second motor. The engine, the first motor and the second motor are connected with a transmission separately. Thetransmission comprises a first input drive shaft, as well as a first gear set and a second gear set which are jointly connected in series on the first input drive shaft and an intermediate shaft. Theend of the intermediate shaft is connected with a gear pair. The gear pair is separately connected with a third input drive shaft and a deceleration driven gear. The third input drive shaft is connected with the second motor. The deceleration driven gear is connected with a differential. The invention also discloses a transmission method. The pure electric mode, the series mode, the parallel mode, the reversing mode and the parking mode can be realized. The invention also discloses a vehicle capable of realizing the multiple modes and the multiple gears. Through the technical solution, the efficiency of the engine in the mechanical drive can be optimized and the power of the engine and powers of the motors are reduced.

Description

technical field [0001] The present invention relates to the technical field of vehicle power arrangement, and in particular to a transmission system and a multi-speed multi-mode transmission method based on the transmission system. On this basis, a vehicle equipped with a hybrid power system is provided. Background technique [0002] Traditional internal combustion engine-driven vehicles, due to the inherent characteristics of the internal combustion engine, the thermal efficiency of the internal combustion engine is particularly low when the vehicle is running at a low speed (for example, the vehicle speed ≤ 60km / h). When the vehicle starts and stops frequently in urban congested road conditions, the fuel efficiency of the engine drops even more . [0003] Although the hybrid vehicles in the prior art have a series mode or a parallel mode, in the case of realizing multi-mode and multi-speed, the system design is relatively complicated, resulting in a long transmission path,...

AI Technical Summary

Problems solved by technology

[0002] Traditional internal combustion engine-driven vehicles, due to the inherent characteristics of the internal combustion engine, the thermal efficiency of the internal combustion engine is particularly low when the vehicle is running at a low speed (for example, the vehicle speed ≤ 60km / h). When the vehicle starts and stops frequently in urban congested road conditions, the fuel efficiency of the engine drops even more

[0003] Although the hybrid vehicles in the prior art have a series mode or a parallel mode, in the case of realizing multi-mode and multi-speed, the system design is relatively complicated, resulting in a long transmission path, which affects the transmission efficiency, and the overall cost is high , is not conducive to market application

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