Hybrid transmission device for urban buses

Abstract

The invention belongs to the technical field of vehicle transmission and particularly relates to a hybrid transmission device. According to the technical scheme of the hybrid transmission device for urban buses, the hybrid transmission device for the urban buses comprises an engine, a coupling, a clutch, a power splitting bus, a power converging bus, a first brake, a second brake, a double-rotor motor, a third brake, an output shaft, an input shaft, an energy storing device and an integrated controller. According to the hybrid transmission device for the urban buses, a planetary gear train is utilized as an implementing device of a power splitting mechanism, the engine outputs power to a certain component of the planetary gear train, the planetary gear train, by a fixed proportion, outputs one portion of torque through the power splitting bus directly and distributes the other portion of the torque to an inner motor of the double-rotor motor to drive the inner motor to generate electricity, an outer motor converts input electric energy into mechanical energy, and the mechanical energy is output after superposed with torque of the output shaft by utilizing the power converging bus, so that the size of the motor is reduced; and multiple modes can be achieved through the integrated controller, and the advantages of electric transmission and mechanical transmission can be fully taken advantages of.

Description

technical field [0001] The invention belongs to the technical field of vehicle transmission, and in particular relates to a hybrid power transmission device. Background technique [0002] In the traditional vehicle design with the internal combustion engine as the power source, it is mainly to ensure sufficient power and good fuel economy by setting more gears. For hybrid vehicles, the electric motor and the engine are used as power devices at the same time, and the two power devices are coordinated through the energy storage device (power battery pack, etc.) and the control system to achieve optimal energy distribution and achieve low energy consumption and low emissions. Performance, especially in congested urban roads, fuel economy can be greatly improved. [0003] Compared with the low-power car hybrid transmission, urban public transport vehicles usually need to use higher-power generators and motors. How to reduce the power requirements of generators and motors while ...

AI Technical Summary

Problems solved by technology

Under the premise of a certain motor power, the hybrid power transmission of the engine plus the direct output of the dual-rotor motor can hardly meet the requirements of urban buses in the adjustment range of the transmission ratio.

The solution to the transmission: on the one hand, increase the power level of the motor, which will bring about a large volume, weight and cost; The motor also needs to transmit the full power and torque of the engine, requiring high-power dual-rotor motor components

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