A tumble test tool and a tumble test equipment

Abstract

The invention discloses a tumble test tool and a tumble test device, wherein the tumble test tool includes a cylindrical simulated cylinder liner, and the inner side of the simulated cylinder liner is provided with a tumble test component and located at the The tumble flow enhancement part below the tumble flow test part, the tumble flow enhancement component includes a reinforcement plate, the plate surface of the reinforcement plate is arranged along the radial extension of the simulated cylinder liner, and the outer peripheral edge of the reinforcement plate is in contact with the There is a gap between the inner walls of the simulated cylinder liner, and the reinforcement plate is arranged under the tumble flow test part along the axial sliding of the simulated cylinder liner. The present invention can implement the tumble test on the air channel of the cylinder head with low tumble intensity by adding a tumble enhancement part in the simulated cylinder liner, and improves the test accuracy.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a tumble test tool and a tumble test device. Background technique [0002] The organization of the airflow in the cylinder of an internal combustion engine has a decisive influence on the formation of the mixture and the combustion process in the cylinder. At the same time, the combustion quality in the cylinder has a profound impact on the power, economy, and emissions of the engine. A good airflow organization can improve the combustion rate and improve the The mixing of in-cylinder air with unburned fuel plays an important role. In the combustion process of gas engines and gasoline engines, it is of great significance to introduce a certain intensity of tumble flow to increase the flame propagation rate in the cylinder and suppress the variation of the combustion cycle. The tumble flow has less momentum decay during the compression process and can be retained until the end of...

AI Technical Summary

Problems solved by technology

[0004] At present, the tumble flow test method and device are mainly aimed at the tumble air passage of a passenger car, whose tumble intensity can be easily detected by the tumble test device during the test process, and the tumble flow of the gas engine designed and developed on the basis of the diesel engine The flow intensity often cannot reach the level of passenger cars, which leads to the inability of the existing tumble flow test technical solutions to accurately capture the tumble flow and achieve effective testing

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