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Vehicle power drivetrain system and speed change mechanism thereof

A transmission system and vehicle power technology, which is applied to the layout of multiple prime movers of general power plants, power plants, vehicle components, etc., can solve the problem of large axial distance of the transmission shaft, reduce the axial distance of the transmission, The effect of reducing the demand for high torque and facilitating layout

Pending Publication Date: 2019-04-02
ZHENGZHOU YUTONG BUS CO LTD
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  • Description
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Problems solved by technology

[0004] The purpose of the present invention is to provide a vehicle power transmission system and its transmission mechanism to solve the problem that the axial distance of the drive shaft is relatively large due to the coaxial arrangement of the engine and the motor in series

Method used

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  • Vehicle power drivetrain system and speed change mechanism thereof
  • Vehicle power drivetrain system and speed change mechanism thereof
  • Vehicle power drivetrain system and speed change mechanism thereof

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Aiming at the defects in the prior art, the purpose of the present invention is to invent a new dual-motor hybrid system, which can realize pure electric drive, engine direct drive, engine drive and power generation, joint drive and brake feedback of the car by using dual clutches. and other modes, avoiding the problems of secondary conversion of energy and low system efficiency during the power split of the existing planetary hybrid system. At the same time, the engine and the motor are arranged in parallel, which not only improves the working efficiency of the motor, but also reduces the demand for high torque of the motor and saves costs. A specific embodiment is given below to illustrate the system of the present invention.

[0021] Such as figure 1 As shown, the hybrid system includes: engine, torsional shock absorber, gear I, gear II, gear III,...

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Abstract

The invention relates to the field of automotive power systems and in particular to a vehicle power drivetrain system and a speed change mechanism thereof. An engine and a motor are arranged in parallel so as to reduce the axial transmission distance and facilitate arrangement. Further, due to the coaxial arrangement, the motor can work near its rated speed to be improved in working efficiency. Inaddition, through an appropriate gear transmission mechanism, the deceleration and the torque increase of the motor are realized, which not only improves the working efficiency of the motor, but alsoreduces the demand for high torque of the motor and saves the cost.

Description

technical field [0001] The invention relates to the field of automobile power systems, in particular to a vehicle power transmission system and a speed change mechanism thereof. Background technique [0002] The current mainstream hybrid power system is mainly a dual planetary row coaxial hybrid configuration. The dual-planetary coaxial row hybrid system has a compact structure, and by adjusting the speed of the motor, the engine can be controlled to work in the high-efficiency zone at all times, so as to realize the decoupling of vehicle speed, engine speed and torque. The process requirements are high and the control is difficult. At the same time, the disadvantages of the existing planetary hybrid systems on the market are: there is power splitting, and the efficiency of the energy secondary conversion system is low; under high-speed conditions, there is no engine direct drive mode, and the efficiency of the ISG motor is low in the low-speed region. [0003] The patent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/36B60K6/40B60K6/54
CPCB60K6/36B60K6/40B60K6/54Y02T10/62
Inventor 王兴陈慧勇王印束王富生刘小伟李建锋邓伟吴胜涛
Owner ZHENGZHOU YUTONG BUS CO LTD
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