Vibration reduction control method and control device for power source, p2 hybrid module

Abstract

A vibration reduction control method and control device of a power source, a P2 hybrid module, wherein the power source is an engine or a drive motor, wherein the vibration reduction control method comprises: when the power source is working, determining the current The vibration frequency and the current amplitude; based on the current vibration frequency and the current amplitude, a control command is issued to generate harmonic vibration in the power source or at the output end of the power source, and the vibration frequency of the harmonic vibration is the same as that of the power source. The current vibration frequency is the same, and the vibration direction is opposite to the current vibration direction of the power source. The invention uses harmonic vibration to absorb the vibration of the power source. In the P2 hybrid module, the generated harmonic vibration replaces part or all of the functions of the dual-mass flywheel, reducing the vibration reduction requirement of the dual-mass flywheel, thereby reducing the The volume of the dual-mass flywheel finally achieves the purpose of reducing the volume of the P2 hybrid module and optimizing the arrangement of the engine and drive motor.

Description

Technical field [0001] The present invention relates to the field of vehicle, and more particularly to a dynamic source damping control method and a control device, a P2 mixing module. Background technique [0002] Double quality flywheel is a configuration in the car in the late 1980s, English brief, called DMF (DoubleMass Flywheel). Double mass flywheel is used in the automotive drive train, which is connected to the output of the power source, and the effect of damping in the vehicle power transmission system. [0003] In the P2 mixing module, the power source includes an engine and a drive motor, and the dual mass flywheel is located between the engine and the drive motor, and is connected to the engine output, and the vibration and torque pulsation generated when the engine and the drive motor are operated. . Compared to the traditional drive train as a power source, the damping performance of the double mass flywheel in the P2 hybrid module requires higher requirements. [...

AI Technical Summary

Problems solved by technology

[0004] Since the damping performance of a dual-mass flywheel is proportional to its mass, the increase in mass will inevitably lead to an increase in the volume of the dual-mass flywheel

For a car with a horizontal engine, the layout space is very limited, resulting in a very awkward position for the design of the dual-mass flywheel in the P2 hybrid module: if the layout requirements of the engine and drive motor are to be met, the dual-mass flywheel needs to be reduced The volume of the flywheel will affect the vibration damping performance of the P2 hybrid module; if the vibration damping performance of the P2 hybrid module is to be improved, the volume of the dual-mass flywheel must be increased, but this will also affect the arrangement of the engine and the drive motor. Very limited, while increasing the weight of the P2 hybrid module

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