System and method for indoor exhaust braking test of vehicle engine

Abstract

The invention discloses a system and a method for an indoor exhaust braking test of a vehicle engine. The system comprises a chassis dynamometer, a data collecting device and a data analysis device. A drum of the chassis dynamometer is arranged below driving wheels of a tested vehicle, the road simulation resistance coefficient of a slope with preset angles is arranged in the chassis dynamometer, and so that the road simulation resistance of the slope with the preset angles is exerted to the tested wheel. The data collecting device is used for collecting the operating data of the vehicle when the vehicle travels on the slope with a plurality of preset angles. The data analysis device is used for analyzing the performance of exhausting and braking of the vehicle according to the collected operating data. According to the system and the method for the indoor exhaust braking test of the vehicle engine, the exhaust braking performance of the vehicle is tested by the chassis dynamometer, the data needed in a test is collected, the process of data collecting is simple, convenient and fast, and the precision of the collected data is high. Testing is convenient, fast and effective, and the cost of testing is greatly lowered.

Description

technical field [0001] The invention relates to vehicle performance testing technology, and in particular to a system and method for indoor vehicle engine exhaust brake testing. Background technique [0002] Vehicle testing is the most important method to verify vehicle performance, and plays an important role in the development and verification of vehicles, among which exhaust brake performance is an important factor to measure the safety of vehicle engines. When the vehicle is driving on a road with a long slope, the use of engine exhaust braking can reduce the number of service braking, reduce the temperature rise of the brake drum, and improve the reliability of braking; When driving on muddy roads, use the engine exhaust brake to reduce sideslip, reduce the supply of engine oil and even cut off the oil, saving fuel. The traditional engine exhaust braking performance test is based on the actual test on the outdoor road. During the test, the data collection of the vehicl...

AI Technical Summary

Problems solved by technology

The traditional engine exhaust braking performance test is based on the actual test on the outdoor road. During the test, the data collection of the vehicle is inconvenient, it is difficult to change the test slope, and it is also difficult to repeatedly test the same test condition. The process is easily affected by the environment. For example, when the road test is carried out outdoors, it is greatly affected by factors such as weather. When the weather is severe, it will have a greater impact on the accuracy of the test results.

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