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Stress Analysis on Cylinder Head of Four Stroke Variable Compression Ratio Diesel Engine

D. Srinivasa Rao, V V Narayana Reddy, K. Satyanarayana, D. Balaji

Abstract


The main aim of this work is to predict the design performance based on the stress/strain and behavior of cylinder head under various operating conditions. The effects of engine operating conditions such as combustion gas maximum internal pressure and temperature on the cylinder head have been analyzed.  The maximum gas pressure vs crank angle are taken from the experimental set up of a variable compression ratio (VCR) Diesel engine. The analysis was carried out at compression ratio 18.5 using a finite element analysis (FEA). which is use to simulate and predict the Von-Mises stresses and strain pattern and thermal distribution of the cylinder head structure .The geometrical modeling was carried out using  CATIA and analysis is done on  ANSYS. In this investigation, structural and thermal analysis of the cylinder head highlight several areas of interest. The maximum stress is found not exceeding the material strength of cylinder head, and thus the basic design criteria, namely no yielding and no structural failure under firing load case are satisfied. This steady-state finite element method (FEM) stress analysis can play a very effective role in the rapid prototyping of the cylinder head. We have done analysis on five different materials. The results of the thermo-mechanical analysis show that when the engine is running, the stress in the region is compressive, caused by thermal loading and combustion pressure. The fatigue analysis is carried out to know the factor of safety and life of the cylinder head it indicates maximum life of 1x106 cycles at compression ratio 18.5 is determined through finite element analysis.


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References


S.S.Bhansali, N.D.Shirgire“Analysis Of Vibration In Diesel Engine Considering Combustion Gas Forces: Using Grey Cast Iron Material” International Journal On Recent And Innovation Trends In Computing And Communication ISSN: 2321-8169 Volume: 2 Issue: 3 604 – 611.

M.Fadaei, H.Vafadar, A.Noorpoor, “New Thermao- Mechanical Analysis of Cylinder Heads Multi-Field

Approach.”, Open Access Funded by Sharif University of Technology, Scientia Iranica, Volume:18, Issue:1, pp:66-74, February 2011

Shixiong Li, Jinlong Mao , Shumao Wang, “Cylinder Head FEM Analysis and it’s

Improvement.”, China Agricultural University,17Tsinghua East Road, Beijing, China.

Pradeep Mani Tripathi, Satya Prakash, Rahul Singh, Satish Kumar Dwivedi, “Thermal Analysis on Cylinder Head of SI Engine using FEM.”, International Journal of Scientific Engineering and Research (IJSER), ISSN:2347-3878, Volume:2, Issue:4, pp:25-30, April 2014.

Amit V. Paratwar, D.B. Hulwan, “Surface Temperature Prediction and Thermal Analysis of Cylinder Head in Diesel Engine.” International Journal of Engineering Research and Application(IJERA), ISSN:2248-9622, Volume:3, Issue:4,pp:892-902, Jul-Aug 2013.

Nitin Kumar Sharma, Amit Kumar Gupta, “Optimization of the Fines to the Four Stroke Single Cylinder Petrol Engine.” International Journal of Research in Aeronautical and Mechanical Engineering (IJRAME), Volume: 2, Issue:5, pp:77-82, May 2014.

F Zieher, F Langmayr, A Jelatancev, K Wieser, “Thermal Mechanical Fatigue Simulation of Castiron Cylinder Heads.”, SAE Technical Paper, doi:10.427.1/2005-01-0796, 12 April 2005.

[8]Jun Hong, Baotong Li, Yubao Chen, Huei Peng, “Study on the optimal design of engine cylinder head by parametric structure characterization with weight distribution criterion.”, Journal of Mechanical Science and Technology25(10)(2011)2607-2614, Springer, 2011.

Baoxin Zhao, Dingwei Gao, Jingqian Shen, Zheng Zhao, Hao Guan, Gang Liu, Ying Guan,“Experiment and Numerical Analysis of Temperature Field of Cylinder Head Based on a GW4D20 Diesel Engine.” , Volume:190, pp:965- 976, Springer, 02 November 2012.

B N Niroop Kumar Gowd, Ramatulasi, “CalculatingHeat Transfer Rate of Cylinder Fin Body by VaryingGeometry and Material.” International Journal of Mechanical Engineering and Robotics Research(IJMERR), ISSN:2278-0149, Volume:3, No.

C.D. Rakopoulos, D.C. Rakopoulos, G.C.Mavropoulos, E.G. Giakoumis, “Experimental and theoretical study of the short term response temperature transient in the cylinder walls of a diesel engine at various operating conditions.”, Applied Thermal Engineering, Science Direct, Volume:24,Issues 5-6, Pages 679-702, April 2004.

Cheng x., Wang x., Ming y., Hongfei Z., Ran Gao, “Thermal-Mechanical Fatigue Analysis of Diesel Engine Cylinder Head Based on Fluid-Structure Interaction.”, SAE Technical Paper 2015-01-0558,doi:10.4271/2015-01-0558, 14 April 2015.

F Zieher, F Langmayr, A Jelatancev, K Wieser, “Thermal Mechanical Fatigue Simulation of Castiron Cylinder Heads.”, SAE Technical Paper,doi:10.427.1/2005-01-0796, 12 April 2005.

G.Karthik, Dr M. Janga Reddy, “Design and Analysis of Cylinder and Cylinder Head of 4-StrokeSI Engine for Weight Reduction.”, International Journal of Latest Trends in Engineering, Science and Technology (IJLTEST), ISSN: 2055-530X, Volume:1, Issue:7.

John Lenny Jr, “Replacing the Cast iron Liners for Aluminum Engine Cylinder Blocks: A Comparative Assessment of Potential Candidates.”, Rensselaer Polytechnic Institute Hartford, Connecticut, April 2011.

N. Ravi Kumar , Y. M. C. Sekhar, and S. Adinarayana “Effects of Compression Ratio and EGR on Performance, Combustion and Emissions of Di Injection Diesel Engine”(2013. 11, 1: 41-49)

K.Satyanarayana, Vinodh Kumar Padala, T.V.Hanumantha Rao, S.V.Umamaheswararao, International Journal of Engineering Trends and Technology (IJETT) –Volume28Number1-October2015ISSN: 2231-5381on Variable Compression Ratio Diesel Engine Performance Analysis.


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