Durability testbed of flywheel for automobile and test method thereof

Abstract

The present invention provides a durability testbed of a flywheel for an automobile and a test method thereof. The testbed comprises a mechanical structure, a hydraulic pressure station and an electric control portion. The mechanical structure comprises a test platform, a swing hydraulic cylinder, a first servo valve, a transmission shaft, a connection piece, an automobile flywheel, a servo hydraulic cylinder and a second servo valve. The hydraulic pressure station supplies power source for a system; the mechanical structure is configured for installation of an automobile flywheel clamp; and the electric control portion is configured to perform real-time control of the swing hydraulic cylinder and the servo hydraulic cylinder. The test method comprises: the swing hydraulic cylinder performs reciprocating swing with high frequency of 20Hz at a neutral position to drive the rotation of the transmission shaft, torque is transmitted and applied to the automobile flywheel through the mechanical structure so as to generate torque for the automobile flywheel, the torque peak value is in the 5000N.m range, the servo hydraulic cylinder performs reciprocal rectilinear motion in the range of -/+mm, and the frequency is 20Hz, so that the actual working conditions are simulated. The durability testbed of the flywheel for the automobile and the test method thereof are novel in experiment mode, convenient to operate and high in controllability and can realize high-frequency and high-precision control.

Description

technical field [0001] The invention belongs to the field of automobile flywheel durability test research, and in particular relates to an automobile flywheel durability test bench and a test method. Background technique [0002] The flywheel is an indispensable part in the composition of the car. The flywheel is a disc with a large moment of inertia, which is installed on the flange at the rear end of the crankshaft of the engine. The flywheel has a large moment of inertia. Since the work done by each cylinder of the engine is discontinuous, the engine speed also changes. When the engine speed increases, the kinetic energy of the flywheel increases to store energy; when the engine speed decreases, the kinetic energy of the flywheel decreases to release energy. A flywheel can be used to reduce speed fluctuations during engine operation. [0003] The reasons for flywheel damage are that the flywheel did not meet the processing quality required by the drawings during the m...

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Problems solved by technology

[0006] It can be seen from the above that for the test of the durability and reliability of the automobile flywheel, it is necessary to apply torsional moment and axial reciprocating motion to the flywheel at the same time. The general test method cannot achieve high-frequency and high-precision control. It is necessary to propose a new test bench and experiment method

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