Vehicle road simulation system

Abstract

A vehicle road simulation system is disclosed. The system comprises a road simulation test system and a test vehicle. The test vehicle comprises a test power assembly, a vehicle body structure and a chassis system. The test power assembly comprises a test transmission, a test power source and a test clutch. The chassis system comprises a power assembly suspension system and other chassis structurecomponents. The parameters of the test power assembly and an actual vehicle power assembly are the same. When the test clutch is closed, the road simulation test system outputs an acting force to thetest power assembly through motion. The acting force simulates the acting force generated by the random vibration of the power assembly caused by road surface roughness and the acting force generatedby the output of a test power source torque to the power assembly suspension system. In the above scheme, power assembly suspension load accuracy simulation can be realized, and simultaneously, the complexity of the vehicle road simulation system is reduced.

Description

technical field [0001] The invention relates to the field of vehicle simulation and testing, in particular to a vehicle road simulation system. Background technique [0002] In automobile development, the design of each component needs to go through trial and error and modification and optimization. In order to find the problems existing in the car design as soon as possible, so as to greatly shorten the development cycle and reduce the development cost, cars generally need to undergo public road tests and intensive road tests, but these two tests are time-consuming and expensive. and issues affecting the progress of product development. Therefore, there has been a road simulation test system suitable for the axles of the vehicle and the front / rear suspension of the vehicle chassis, which is used to test the durability of the vehicle chassis system, body and other structures. Although the road simulation test system can better simulate the load caused by the uneven road su...

AI Technical Summary

Problems solved by technology

The torque output of the vehicle powertrain and the load caused by the uneven road are transmitted to the frame and body through the powertrain suspension system, and the existing road simulation test system cannot simulate the torque output of the powertrain, so the torque of the powertrain cannot be assessed Durability problems of powertrain suspension system, subframe and body structure caused by output

[0004] In order to solve this problem, at present, one method is to simulate the load on the powertrain suspension system during the road test through a torque input device composed of a hydraulic cylinder and a series of supporting fixtures, but the structure of the simulation test system is complex and difficult to operate

Another method is to directly add load to the powertrain suspension system by adding hydraulic cylinders separately, which has the problem of poor simulation accuracy.

Images