Test system and method for traction performance of automobiles

Abstract

The invention relates to a test system and a test method for the traction performance of automobiles. The test system comprises road gliding equipment, performance test equipment and data acquisition equipment, wherein the data acquisition equipment is connected with the road gliding equipment and the performance test equipment respectively; the road gliding equipment is used for testing preparation data; and the performance test equipment is used for testing the preparation data, traction performance data of the maximum towing hook and traction performance data of each shift towing hook. The test method comprises the following steps of preparing, testing the traction of the maximum towing hook, testing the traction performance of each shift towing hook and classifying the data. In the method, load tow trucks on roads are simulated by utilizing a chassis dynamometer in a method of gradient application, and compared with a method of using the load tow trucks on the roads, the method has simplicity of control and operation on indoor revolving drums and is easy to realize; and compared with a constant speed method used on the chassis dynamometer, the method has the advantage that the driving resistance of the automobiles on straight road surfaces is considered fully and the advantage that the actual traction for the automobiles on the towing hooks can be measured integrally.

Description

technical field [0001] The invention relates to automobile performance testing, in particular to an automobile traction performance testing system and method. Background technique [0002] At present, traction performance tests are mostly used on the road to connect the test vehicle and the load trailer with a tow bar, see figure 1 , figure 1 It is a flow chart of the method for testing the traction performance of an automobile by the road method of the prior art. During the test, the drawbar should be kept horizontal, and the longitudinal axis of the drawbar should be consistent with the driving direction. During the vehicle traction performance test, the vehicle starts, accelerates to the gear required for the test, fully opens the accelerator, and accelerates to about 80% of the maximum speed of the gear. Apply load to the load trailer. Within the normal operating speed range of the engine, measure 5 to 6 stable vehicle speeds with even intervals and the traction force...

AI Technical Summary

Problems solved by technology

The constant speed method does not truly simulate the driving conditions on the road, and fails to take the road driving resistance factor into consideration, so the traction obtained is not the actual traction force of the tow hook

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