Test method for simulating real vehicle slipping frictional starting durability on test board

Abstract

The invention relates to a test method for simulating real vehicle slipping frictional starting durability on a test board, and belongs to the technical field of engines. The test method comprises thefollowing steps that: 1) a power assembly is fixed on the mounting bottom plate of a power assembly testbed, and a test accessory is installed; 2) a simulation parameter is determined; 3) the power assembly is driven to carry out a test; 4) S3 is repeated to circulate for 200-thousand times; and 5) after a test working condition finishes operating, the power assembly is disassembled from the testbed, teardown inspection is carried out, a clutch which is most suitable for controlling slipping frictional starting is found, and meanwhile, the best control combination way for the clutch is foundduring the slipping frictional starting. By use of the test method disclosed by the invention, road resistance when the real vehicle is actuated to drive and the road maximum static friction resistance during starting can be simulated, simulated operation that the real vehicle is changed into starting driving from a static state is realized on the power assembly testbed, the durability checking ofthe slipping frictional starting driving working condition can be finished, the combined state change of a transmission clutch in the slipping frictional starting driving working condition is effectively verified, and a test period is greatly shortened.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a test method for simulating the start-up durability of a real vehicle on a bench. Background technique [0002] At present, more and more vehicles use skidding to start the car at the starting stage of driving. Compared with ordinary starting, skidding has the advantages of faster start, smoother starting process, and better driving feeling when starting. When using a slippery start, it is necessary to consider which clutch to choose to control the slippery start of the car, and how to control the combination of the transmission solenoid valve and the clutch when the car starts without affecting the normal shifting of the transmission after the car starts. This requires a lot of work. Experimental verification is used to find the clutch that is most suitable for controlling the slippery start, and to find the best control combination method of the clutch at the slippery start. ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of using the whole vehicle for the test, the present invention requires the driver to step on the gas pedal several times to start, which will easily cause the driver's fatigue and lead to a long test period. There are certain dangerous problems in the vehicle, and then provide a test method for simulating the start-up durability of the real car on the bench