Test apparatus and test method for durability of vehicle vibration damper

Abstract

The invention relates to the technical field of vehicle tests, and discloses a test apparatus and a test method for the durability of a vehicle vibration damper. The test apparatus comprises an acquisition unit (1) respectively arranged on an upper vehicle frame and / or a lower axle of the damper and used for acquiring vibration parameters of the upper vehicle frame and / or the lower axle of the damper in a driving process of a vehicle and obtaining the actual road investigation; and a calculation unit used for determining the resonance excitation frequency and the corresponding excitation amplitude according to the actual road investigation, obtaining the equivalent damage value according to the resonance excitation frequency, the excitation amplitude, and multiple excitation calculations, obtaining the damage values of various pavements according to the actual road investigation, determining the general damage value of full cycle of the whole vehicle according to the pavement cycle prescribed by a test, and determining the excitation frequency of the durability tests for the vibration damper according to the equivalent damage value and the general damage value of the full cycle of the whole vehicle. According to the test apparatus for the durability of the vehicle vibration damper, the excitation frequency of the durability tests of the vibration damper can be obtained, and a reasonable service lifetime can be accurately determined.

Description

technical field [0001] The invention relates to the technical field of vehicle testing, in particular to a test device and a test method for the durability of a vehicle shock absorber. Background technique [0002] As the main damping element of the suspension system, the shock absorber can effectively isolate the interference from the ground and absorb the excitation energy through a good match with the suspension system, quickly attenuate the vibration of the vehicle body, and convert the kinetic energy into heat energy. Dissipate into the atmosphere, so that the vibration amplitude transmitted to the body is greatly reduced. [0003] The shock absorber is a vulnerable device. When the temperature is high, the shock absorber is prone to oil leakage, so that the shock absorber cannot effectively attenuate the vibration, thereby affecting the ride comfort of the vehicle and the life of other parts. At present, the durability test of the shock absorber is mainly carried out ...

AI Technical Summary

Problems solved by technology

However, the existing shock absorber durability test method can only reflect the motion state of the shock absorber, and cannot reflect the actual speed of motion. Therefore, it cannot accurately determine the reasonable service life of the shock absorber and whether it is qualified, so that The vibrator has oil leakage and failure during use

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