Power assembly system

Abstract

The invention relates to a power assembly system, comprising an engine input shaft connected with the engine by an engine clutch and fixably provided with a high speed gearwheel; a power output shaft connected to a drive axle by the drive shaft coupling, one end of which is provided with a drive shaft coupling, wherein a low speed gearwheel and a middle position gearwheel are held on the power output shaft; a first motor input shaft fixed with a high speed pinion gear, one end of which is provided with a first motor shaft connector, wherein the high speed pinion gear and the high speed gearwheel are engaged frequently; a second motor input shaft fastened with a low speed pinion gear and a middle position pinion gear, one end of which is provided with a second motor shaft connector, wherein the low speed pinion gear is engaged with the low speed gearwheel frequently and a first gear shift mechanism and a second gear shift mechanism arranged on the power output shaft. The invention is especially suitable for large-sized complicated operating condition hybrid power vehicles.

Description

technical field [0001] The present invention relates to a powertrain system, in particular to a hybrid powertrain system for a hybrid vehicle. Background technique [0002] Hybrid electric vehicles (HEV) have become the development direction of clean and efficient vehicles, one of the best ways to solve environmental protection and energy-saving problems, and an inevitable choice for the sustainable development of my country's automobile industry. Hybrid vehicles using traditional internal combustion engines and battery-motors as power systems have become a hot research topic in automotive power system technology due to their advantages of low energy consumption and low emissions. [0003] Because hybrid vehicles use two kinds of power sources as power devices, their various components, layout methods and control strategies are different, thus forming a variety of structural types. There are also many ways to classify hybrid vehicles. According to the number of power sourc...

AI Technical Summary

Problems solved by technology

[0015] However, there are still some deficiencies or defects in this hybrid powertrain. For example, an assembly like Toyota THS needs to be improved in terms of power due to the characteristics of the planetary mechanism "variable speed and constant torque". If major improvements are not adopted It is difficult to change the transmission ratio in a large range, and it is only suitable for light hybrid cars with little change in load and its topological layout and control are also complicated.

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