A multi-mode drive system for a hybrid vehicle

Abstract

The present invention proposes a multi-mode drive system for a hybrid vehicle, including an engine, a generator, a drive motor, a planetary gear mechanism, an input shaft, an input shaft of a generator, an intermediate shaft, an output shaft of a drive motor, an output shaft and a differential, The engine is connected to the input shaft through a torsional shock absorber. The input shaft is coaxially arranged with the input shaft of the generator, and arranged parallel to the output shaft, intermediate shaft and output shaft of the driving motor. The planetary gear mechanism is installed on the input shaft of the generator. The end of the shaft is connected with the planet carrier, the first gear and the second gear are installed on the input shaft, the third gear and the fourth gear are installed on the intermediate shaft, and the fifth, sixth, and seventh gears are installed on the output shaft in sequence. The eighth gear is arranged on the output shaft of the driving motor, the sixth gear and the seventh gear mesh with the first and second gears, the third gear and the fourth gear respectively, and the differential gear is arranged on the differential, and the second The fifth gear meshes with the differential gear and the eighth gear respectively. The present invention has a compact structure and can realize driving in various functional modes.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, and in particular relates to a multi-mode driving system of a hybrid electric vehicle. Background technique [0002] With the increasing awareness of energy conservation and environmental protection in today's society, new energy vehicle technology has begun to develop rapidly. Hybrid vehicle drive technology is the core stage of the development process of new energy vehicles. Improving fuel economy and reducing emissions are important issues facing hybrid technology. In the existing gearbox, synchronizers are installed on both the input shaft and the output shaft, and the technical scheme of realizing 4 gears of the engine is realized through two synchronizers and two pairs of gears, but the two gears of the intermediate shaft are fixedly installed on the same shaft superior. If the two synchronizers on the input shaft and the output shaft are engaged on the same side, that i...

AI Technical Summary

Problems solved by technology

If the two synchronizers on the input shaft and the output shaft are engaged on the same side, that is, when the engine is running in 1st or 4th gear, it will drive the four gears and the intermediate shaft to idle while realizing power transmission, and the four gears and the intermediate shaft will be idle. The shaft is not a gear used to transmit power, resulting in a waste of energy

In addition, the vehicle has fewer driving modes and no functional modes such as driving power generation, resulting in fewer options for vehicle control strategies, which is not conducive to reducing vehicle fuel consumption and improving vehicle economy

Existing technologies often have the defects of excessive efficiency loss and relatively simple functional mode in structure

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