Numerical Prediction and Verification of Noise Radiation Characteristics of Diesel Engine Block

2019 ◽  
Author(s):  
Devendra Mandke ◽  
Deepak Ghaisas ◽  
Sachin Pawar ◽  
Sanghoon Suh
Keyword(s):  
Diesel Engine ◽  
Numerical Prediction ◽  
Engine Block ◽  
Radiation Characteristics ◽  
Noise Radiation

scholarly journals Vibration Response and Noise Radiation of Engine Block Coupled with the Rotating Crankshaft and Gear Train

2011 ◽  
Vol 6 (4) ◽  
pp. 765-777 ◽  
Author(s):  
Kazuhide OHTA ◽  
Kouichiro IKEDA ◽  
Guangze ZHENG ◽  
Takahiro OKIMOTO ◽  
Iwao HONDA
Keyword(s):  
Vibration Response ◽  
Gear Train ◽  
Engine Block ◽  
Noise Radiation

An EHD-mixed lubrication analysis of main bearings for diesel engine based on coupling between flexible whole engine block and crankshaft

2015 ◽  
Vol 67 (2) ◽  
pp. 150-158 ◽  
Author(s):  
Lidui Wei ◽  
Haijun Wei ◽  
Shulin Duan ◽  
Yu Zhang
Keyword(s):  
Diesel Engine ◽  
Flow Model ◽  
Mixed Lubrication ◽  
Engine Block ◽  
Contact Theory ◽  
Asperity Contact ◽  
Block Model ◽  
Content Type ◽  
Oil Film ◽  
Average Flow Model

Purpose – The purpose of this paper is to develop a good calculation model to accurately predict the lubrication characteristic of main bearings of diesel engine and improve the service life. Design/methodology/approach – Based on the coupling of the whole flexible engine block and the flexible crankshaft reduced by the Component Mode Synthesis (CMS) method, considering mass-conserving boundary conditions, the average flow model equation and Greenwood/Tripp asperity contact theory, an elastohydrodynamic (EHD)-mixed lubrication model of the main bearings for the diesel engine is developed and researched with the finite volume method and the finite element method. Findings – Obviously, the mixed lubrication of bearings is normal, while full hydrodynamic lubrication is transient. The results show that under the whole flexible block model, maximum oil film pressure, maximum asperity contact pressure and radial shell deformation decrease, while minimum oil film thickness increases. Oil flow over edge decreases, and so does friction loss. Therefore, coordination deformation ability of whole engine block is favorable to mean load. In the whole block model, friction contact happens on both upper shell and lower shell positions. In addition, average oil film fill ratio at the key position becomes smaller in the whole engine block model, and consequently increases the chances of cavitations erosion more. So, wearing resistance of both upper and lower shells and anti-cavitations erosion ability must be enhanced simultaneously. Originality/value – Based on the coupling of the whole flexible engine block and the flexible crankshaft reduced by the CMS method, considering mass-conserving boundary conditions, the average flow model equation and Greenwood/Tripp asperity contact theory, an EHD-mixed lubrication model of the main bearings for the diesel engine is built, which can predict the lubrication of journal bearings more accurately.

Free Modal Analysis of a 2-Cylinder Diesel Engine Cylinder Block

2010 ◽  
Vol 29-32 ◽  
pp. 310-314
Author(s):  
Zhong Cai Zheng ◽  
Na Liu ◽  
Yan Gao ◽  
Kun Jin Zhang ◽  
Hai Ou Chen
Keyword(s):  
Diesel Engine ◽  
Modal Analysis ◽  
Three Dimensional ◽  
Engine Block ◽  
Cylinder Block ◽  
Mode Shapes ◽  
Relative Distribution ◽  
Three Dimensional Model ◽  
Engine Cylinder ◽  
Vibration Magnitude

The three dimensional model of a 2-cylinder diesel engine block is established with the P ro/E software, and then the modal analysis of the engine block is carried out using finite element method with ANSYS software . Through the analysis, the inherent frequencies and mode shapes of the first 6 order modes are obtained respectively, and then are compared with the testing result; comparison shows the results of FEA estimation are in good agreement with those of testing which indicates the FEA results’ correctness. The results of the relative distribution of the vibration magnitude in the whole block are given, which provide necessary guides for the dynamic optimal design of the engine block.

Finite Element Modal Analysis of S385 Diesel Engine Block

2014 ◽  
Vol 490-491 ◽  
pp. 504-509 ◽  
Author(s):  
Bo Liu ◽  
Hui Lue Jiang
Keyword(s):  
Finite Element ◽  
Diesel Engine ◽  
Structural Design ◽  
Natural Frequencies ◽  
Structural Characteristics ◽  
Engine Block ◽  
Response Analysis ◽  
Vibration Modes ◽  
Element Analysis ◽  
Theoretical Support

Free and constraint modal finite element analysis were conducted on S385 diesel engine block using FEA according to its structural characteristics. The natural frequencies and corresponding vibration modes of the first fifteen steps of each condition of the block were worked out using Lanczos method. By the analysis of vibration modes, the weak spots of the block were found and corresponding improved schemes were brought forward. The analysis results supplied a theoretical support to improve the structural design and the dynamic response analysis of the block.

scholarly journals Development of the Rheocast Diesel Engine Block with ADC10 Alloy via ART (Advanced Rheocasting Technology) System

2009 ◽  
Vol 49 (11) ◽  
pp. 1700-1709 ◽  
Author(s):  
J. G. Sim ◽  
Y. S. Jang ◽  
J. Y. Moon ◽  
J. M. Kim ◽  
K. H. Min ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Engine Block ◽  
Technology System

Analysis of Vibration on an Engine Block Caused by Combustion in a Diesel Engine

2019 ◽  
Vol 20 (1) ◽  
pp. 187-195
Author(s):  
Yoonwoo Lee ◽  
Seunghyun Lee ◽  
Hoimyung Choi ◽  
Kyoungdoug Min
Keyword(s):  
Diesel Engine ◽  
Engine Block
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