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
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 cann

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail 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 can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a 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 following describes specific implementations of a method for obtaining engine radiation noise and an engine design optimization method provided by embodiments of the present invention with reference to the accompanying drawings.

[0027] An embodiment of the present invention provides a method for obtaining engine radiation noise, such as figure 1 As shown, it specifically includes the following step...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F17/50
Inventor 刘爱军曾宪棣
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap