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Method for obtaining engine radiation noise and engine design optimization method

A radiation noise and engine technology, applied in the field of vehicle engineering, can solve the problems of high cost of manpower and material resources, affecting the research and development of vehicle vibration and noise performance, and affecting the development effect of engine vibration and noise performance, so as to reduce vibration and noise and improve comfort Sexuality and the effect of prolonging the service life

Inactive Publication Date: 2015-08-12
BEIJING BORGWARD AUTOMOBILE CO LTD
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Problems solved by technology

[0004] The existing process of engine design and optimization is generally to test and measure the radiation noise of the designed engine prototype. Only after the test and measurement of the prototype can the problem be found, and then combined with the measurement results of the radiation noise, the real engine In this way, problems cannot be found in the early design stage of the engine, resulting in a relatively large cost of manpower and material resources, and the entire engine development cycle is long, which affects the development effect of engine vibration and noise performance, thereby affecting the vehicle vibration and noise performance research and development

Method used

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  • Method for obtaining engine radiation noise and engine design optimization method
  • Method for obtaining engine radiation noise and engine design optimization method
  • Method for obtaining engine radiation noise and engine design optimization method

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Embodiment Construction

[0025] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0026] The specific implementation manners of a method for obtaining engine radiated noise and an engine design optimization method provided by embodiments of the present invention will be described below with reference to the drawings in the description.

[0027] A method for obtaining engine radiation noise provided by an embodiment of the present invention, such as figure 1 As shown, it specifically includes the following steps:...

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Abstract

The invention provides a method for obtaining engine radiation noise and an engine design optimization method, comprising the steps as follows: calculating main bearing load of an engine crankshaft through establishing a finite element model of an engine, applying the main bearing load of the engine crankshaft on the finite element model of the engine, calculating accelerated velocity of a shell of the engine to be designed, then extracting the surface of the finite element model of the engine, creating a boundary element mesh model of the engine, applying the vibration acceleration on the surface of the shell of the engine on the boundary element mesh model of the engine; finally creating a radiation noise analytical calculation model of the engine and calculating the engine radiation noise according to the radiation noise analytical calculation model of the engine. The method of the invention prolongs the service life of engine and components thereof, reduces finished automobile vibration noise, improves the comfortableness of an automobile and has played excellent effect.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a method for acquiring engine radiation noise and an engine design optimization method. Background technique [0002] The automobile engine is one of the main vibration and noise sources of the automobile. During the operation of the engine, the additional force and moment generated by the unbalanced movement of the crankshaft, connecting rod, and piston system in the engine cylinder, the pulsation of the gas pressure in the cylinder, and the friction between the piston and the cylinder wall will cause the engine to vibrate. The vibration will be transmitted to the engine casing, causing the casing to vibrate, and the casing will radiate noise while vibrating. [0003] The vibration of the engine will affect the life of the engine and its components. At the same time, the vibration of the engine will be transmitted to the body through the engine mount, which will dir...

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Application Information

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IPC IPC(8): G06F17/50
Inventor 刘爱军曾宪棣
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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