Tumble flow test tool and tumble flow test equipment
A technology for testing tooling and tumble flow, which is used in measuring devices, internal combustion engine testing, and engine testing. The effect of testing accuracy
Active Publication Date: 2021-09-17
WEICHAI POWER CO LTD
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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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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] Please refer to Figure 2 to Figure 5 , figure 2 It is a schematic diagram of the tumble motion generated by the cylinder head to be tested during the test; image 3 It is a schematic diagram of the structural layout of the tumble test equipment in a specific embodiment of the present invention; Figure 4 It is a schematic diagram of the first working state of the tumble flow test tool in a specific embodiment of the present invention; Figure 5 It ...
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The invention discloses a tumble flow test tool and tumble flow test equipment. The tumble test tool comprises a test board, a cylindrical simulation cylinder sleeve and an auxiliary sleeve. The upper end opening of the simulation cylinder sleeve is in butt joint with the mounting port of the test board, and the upper end opening of the auxiliary sleeve is in sealed connection with the lower side surface of the test board. The auxiliary sleeve sleeves the outer side of the simulation cylinder sleeve, and a gap is reserved between the auxiliary sleeve and the simulation cylinder sleeve; the inner side of the simulation cylinder sleeve is provided with a tumble test part, and the cylinder wall is provided with a vent hole. The inner side of the auxiliary sleeve is provided with a liftable reinforcing plate located below the simulation cylinder sleeve. The reinforcing plate can block the lower end opening of the simulation cylinder sleeve, and a gap exists between the peripheral edge of the reinforcing plate and the inner wall of the auxiliary sleeve. The air vent is formed in the simulation cylinder sleeve, the auxiliary sleeve is arranged on the outer side of the simulation cylinder sleeve in a sleeving mode, meanwhile, the tumble enhancing component is additionally arranged in the auxiliary sleeve, tumble testing can be carried out on the air channel of the air cylinder cover with the low tumble strength, and the testing accuracy is improved.
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...
Claims
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IPC IPC(8): G01M15/04G01M15/02G01M9/06
CPCG01M15/04G01M15/02G01M9/06
Inventor 王德成吕顺李卫
Owner WEICHAI POWER CO LTD