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 test bench, a cylindrical simulated cylinder liner and an auxiliary sleeve, and the upper opening of the simulated cylinder liner and the installation of the test bench The upper opening of the auxiliary sleeve is in sealing contact with the lower surface of the test bench. The auxiliary sleeve is set on the outside of the simulated cylinder liner and a gap is reserved between the simulated cylinder liner. The inner side of the simulated cylinder liner is provided with a roller. The flow test part is provided with a vent hole on the wall of the cylinder, and the inner side of the auxiliary sleeve is provided with a liftable reinforcement plate under the simulated cylinder liner. There is a gap between the inner walls of the barrel. In the present invention, a vent hole is provided on the simulated cylinder liner, an auxiliary sleeve is sleeved on the outside, and a tumble flow enhancing component is added to the auxiliary sleeve, so that the tumble flow test of the air passage of the cylinder head with low tumble flow intensity can be realized. Improve 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

Images