A piston noise reduction method and a piston

Abstract

The invention provides a piston noise lowering method and a piston. The method comprises the following steps that according to an engine model number, a kinetic model which accords with the operation working condition of an engine with the model number is established; working condition data of the engine with the model number are extracted, a plurality of piston pin hole offset values are protocolled; the piston pin hole offset values are combined with the working condition data and are respectively substituted into the kinetic model; the kinetic model is used for computing and obtaining kinetic energy changing information during a piston operation process under different piston pin hole offset values; the kinetic energy changing information under the piston pin hole offset values is compared, the piston pin hole offset value corresponding to the kinetic energy changing information with lowest kinetic energy changing is selected as an optimal offset value; the position of a pin hole is arranged on the piston according to the optimal offset value; the position of the pin hole of the piston is determined according to the method.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a piston noise reduction method and a piston. Background technique [0002] In the development process of the engine field, while pursuing the continuous improvement of power and performance, it is also moving towards the direction of more energy saving and environmental protection. The so-called concept of environmental protection not only represents higher fuel combustion efficiency and lower emissions, but also includes the control of noise pollution. At present, the noise generated during engine operation is an important indicator to measure the quality of the engine; reducing the noise during engine operation to make the engine run more quietly and smoothly is also one of the important topics in the engine research and development process. [0003] There are two main sources of engine noise: combustion noise and mechanical noise. The noise generated when the fuel is burned...

AI Technical Summary

Problems solved by technology

At this stage, the optimal offset distance of the pin hole can only be determined through a large number of repeated experiments; that is to say, the optimal offset distance obtained in the prior art is an empirically optimized value without introducing mechanical calculations In the analysis process, there is no theoretical data support, and the result obtained may be a more optimal value, but not necessarily the theoretical optimal value

Moreover, a large number of repeated experiments are time-consuming and costly, and also bring a greater burden to the research and development process.

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