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Engine stand test: the key to improving engine performance In the process of automobile development,global market access the performance of the engine has always been the most concerned issue for many car owners. Therefore, in order to test whether the engine performance of the vehicle is reliable, the engine bench test technology was born. The engine frame test is widely used in the engine performance test and adjustment of various vehicles and mechanical equipment. This article will introduce in detail the principle, function, influencing factors of engine frame test and application cases in engine performance improvement. 1. Engine stand test work originalEngine frame test refers to testing the engine by installing the engine on a mechanical device similar to a wheel by simulating the driving condition of the vehicle and using load equipment. Through measuring equipment, setting test conditions and simulating vehicle driving operation, the torque, power, speed and other performance index data of the engine rotating bearing are obtained, so as to verify that the performance indicators of the engine meet the specific standard requirements. Two. The function of engine frame test The engine frame test can be used in the following aspects: (1) Test the power performance and fuel economy performance of the engine to provide a reference basis for other vehicles for selection, adjustment and maintenance. ( 2) Compare different brands of engines to understand their performance, advantages and disadvantages. ( 3) Check the performance of the engine in different loads and different temperatures, and optimize and adjust the engine.(4) Provide experimental data support for the new design and research of the engine, and carry out simulation design. ( 5) Through the engine frame test, predict the service life of the engine and the failure during vehicle operation, and provide basic data for the maintenance plan. 3. Influential factors of engine frame test The engine frame test is not only affected by the engine itself, but also by many factors. The following are the main factors affecting the test results of the engine stand: (1) Test environment: The test environment affects factors such as cooling, heating and airflow of the engine. ( 2) Test tools: Different test tools can produce different measurement results, because the accuracy of test tools is different. ( 3) Test conditions: Different test loads and test times also affect the test results. ( 4) Engine status: If the condition of the engine itself is different, such as service life, repair and maintenance status, it will directly affect its performance. Four. Application cases of engine frame test in engine performance improvement The following are several successful cases of using engine frame test technology to improve mechanical performance and fuel efficiency. ( 1) Use the test bench and other equipment of the Chelsea factory to improve the diesel engine, increase the gasoline nozzle, increase the exhaust and increase the pressure of the high-pressure pump to improve fuel efficiency and generate stronger power output. ( 2) NASA uses the platform test to simulate the engine and test its performance. They can test influencing factors such as strength, performance and loss of internal design by creating different test conditions on the simulation device. ( 3) Take advantage ofOptimize the turbocharging system through the engine frame test, and test the impact and improvement of running speed and acceleration adjustment on the engine. In a word, the engine frame test is widely used in the automobile industry and other kinds of machinery and equipment. Information-rich data can be obtained through testing, which can provide a basis for quality and performance improvement for our improvement, design and maintenance of machinery and equipment.

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