International Journal of Research and Innovation in...

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International Journal of Research and Innovation on Science, Engineering and Technology (IJRISET)

THERMAL ANALYSIS OF INTERNAL COMBUSTION DIESEL ENGINE EXHAUST VALVE FOR THE EVALUATION OF WELD COMPATIBILITY

Desamsetti. Harikesava1, NS Maruthy Vijay Sripada2,S.N.CH.Dattu.V3.

1 Research Scholar, Department of Thermal Engineering, Aditya Engineering College, Surampalem, Andhra Pradesh, India.2 Assistant Professor, Department of Mechanical Engineering, Aditya Engineering College, Surampalem, Andhra Pradesh, India.3 Assistant Professor, Department of Mechanical Engineering, Aditya Engineering College, Surampalem, Andhra Pradesh, India.

*Corresponding Author:

Desamsetti. Harikesava,Research Scholar, Department of Thermal Engineering, Aditya Engineering College,Surampalem, Andhra Pradesh, India.Email: [email protected]

Year of publication: 2015Review Type: peer reviewedVolume: II, Issue : I

Citation:Desamsetti. Harikesava, Research Scholar "Thermal Analysis of Internal Combustion Diesel Engine Exhaust Valve For The Evaluation of Weld Compatibility" International Journal of Research and Innovation on Science, Engineering and Tech-nology (IJRISET) (2015) 53-60

PROBLEM DISCRIPTION

In this project a diesel engine puppet valve is evaluated by varying material and welding process to join seat and stem.

Effect of coating material will be taken in to account in analysis work.

METHODOLOGY

There are Different methodologies used by researchers to obtain a good design and economic performance of the valves by considering different valves failure criteria. Dif-ferent types of failure and their causes are discussed in the following articles.

Failure due to fatigue:

Transient structural and thermal analysis will be con-ducted to determine structural and thermal defects in-dividually, coupled field and fatigue analysis will be con-ducted to determine stress, deflection, strain, life, fatigue sensitivity and damage/error in combination both condi-

tions at 5000 cycles as a single cycle. Above analysis will be done by varying materials, welds process and by add-ing coatings on surface.

Fatigue cycles 1e7 *5000 cycles as a single cycle.

INTRODUCTION TO IC ENGINE VALVE

Function of Exhaust valve: exhaust valve works as doors for the ports, these ports are used to escape burnt gases from the cylinder through ports to atmosphere.

VALVE DIMENSIONS:

Abstract

The present project work is forced on different failure modes at the joint of valve seating and stem of internal combustion engine valves and improvement of joint by involving new welding process.

In this two materials and three types of weld process are involved to suggest optimum material and weld process, and also evaluation will be done to suggest best coating material.

Failures due to fatigue, high temperature effects, and Failures due to impact load that depends on load and time.

Couple –field, fatigue and transient analysis will be done on valves and valve with coating to determine structural, fa-tigue and thermal behavior to find out results in working condition.

Best weld process will be suggested by conducting analysis on valve with joint with the change in weld process.

International Journal of Research and Innovation in Thermal Engineering (IJRITE)

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Working Requirements for ExhaustValves

a) Allow gases go out of the engine b) Seal the port without leak for remaining period c) Strength to with stand high temperatures d) Resistance to wear at the mating surfaces e) Good sliding surface for seizure resistance

INTRODUCTION TO CREO

CREO is the industry’s standard 3D mechanical design suit. It is the world’s leading “CAD/CAM /CAE software, gives a broad range of integrated solutions to cover all aspects of product design and manufacturing. Much of its success can be attributed to its technology which spurs its customer’s to more quickly and consistently innovate a new robust, parametric, feature based model, because the Pro/E technology is unmatched in this field, in all processes, in all countries, in all kind of companies along the supply chains.

MODEL OF VALVE

Above placed image is showing valve model

Above placed image is showing assembly of seat and stem

INTRODUCTION TO ANSYS

TRANSIENT THERMAL ANALYSIS OF EXHAUST VALVE

Material: nickel chromium steel

Above placed image is showing imported model

Above placed image is showing meshed model

Above placed image is showing load applied

Above placed image is showing temperature

Above placed image is showing total heat flux

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COUPLED FIELD ANALYSIS OF EXHAUST VALVE

Material: nickel chromium steel

Above placed image is showing total deformation

Above placed image is showing stress

Above placed image is showing safety factor


Material: titanium




Material: titanium


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Material: INCONCAL-X751




Material: INCONCAL-X751



TRANSIENT THERMAL ANALYSIS OF EXHAUST VALVE WITH WELDING

Material: INCONAL-X751


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TRANSIENT THERMAL ANALYSIS OF EXHAUST VALVE WITH FSW AND COATING

MATERIAL: INCONAL-X751

COATING MATERIAL: CERAMIC

Above placed image is showing meshed model



RESULT GRAPHS


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TRANSIENT THERMAL ANALYSIS OF EXHAUST VALVE WITH WELDING,EB WELDING AND FSW

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Conclusion

The present project work is to analyze internal combus-tion diesel engine exhaust valves at different welding and coating conditions and also evaluation is done by varying materials.

Analysis is done to evaluate heat flux value for different materials and weld process and also coupled field analy-sis is conducted with above conditions to evaluate struc-tural behavior while applying combinational loads of ther-mal and pressure.

Initially literature survey and data collection was done to understand the methodology, selection of latest materi-als, latest weld technology and coatings to restrict the temperature effect on valve.

In the next stage modeling and assembly of valve seat and stem is prepared to conduct further work in ansys

Transient thermal analysis is conducted on exhaust valve using nickel chrome steel, titanium and inconcal with the time history process at 5000 cycles, as per the analysis results inconcal is having total heat flux of 16.009 w/mm2 ,coupled field analysis is conducted with above conditions to evaluate stress and deformation values at combina-tional load conditions as per the analysis results stress value is low for titanium ,while considering ultimate yield strength of deformation and strain values inconcal is showing good characteristics. So better to use inconcal.

Transient thermal and coupled field analysis is done on exhaust value using inconcal material with the varia-tion of weld process(fusion welding, EB welding and FSW welding) as per the analysis results friction steel welding is the best process to join value seat and stem.

Transient thermal analysis is done on exhaust value by varying coating materials chromium (present material) and ceramic (partially stabilized zerconium) as per the analysis results ceramic is completely restricting the tem-perature transfer through the valve.

to reduce the thermal effect on valve better to use incon-cal with ceramic coating ,and to improve the thermal and structural abilities better to use frictional stir welding.

REFERENCES

Combating Automotive Engine Valve Recession

By Roger Lewis and Rob S.Dwyer-Joyce University of SheffieldDept.of Mechanical Engineering Sheffield, Unit-ed Kingdom engine valve recession 9/11/03T R I B O L O G Y & L U B R I C AT I O N T E C H N O LO G Y

Modelling of the heat loads of the engine valves and the accuracy of calculationsP. Gustof, A. Hornik* Faculty of Transport, Department of Vehicle Service, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

Received 03.04.2007; published in revised form 01.08.2007Journal of Achievements in Materials and Manufacturing Engineering Computational Visualization and Simulation of Diesel Engines Valve Lift Performance Using CFD

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1Semin, 1Rosli Abu Bakar and 1Abdul Rahim Ismail 1Au-tomotive Focus Group, Faculty of Mechanical Engineer-ing, University Malaysia Pahang, Locked Bag 12, 25000 Kuantan, Pahang, Malaysia,American Journal of Applied Sciences 5 (5): 532-539, 2008ISSN 1546-9239 © 2008 Science Publications

Investigation of Exhaust Valve Failure in Heavy – duty Diesel EngineNurten VARDAR1, Ahmet EKERİM2 Gazi University Jour-nal of Science GU J Sci 23(4):493-499 (2010)FAILURE ANALYSIS OF INTERNAL COMBUSTION EN-GINE VALVES: A REVIEW

Naresh Kr. Raghuwanshi1, Ajay Pandey2, R. K. Mandloi3 Department of Applied Mechanics, M.A.N.I.T., Bhopal, Madhya Pradesh, India1 International Journal of Innova-tive Research in Science, Engineering and TechnologyVol. 1, Issue 2, December 2012

Modelling and analysis of radial thermal stresses and temperature field in diesel engine valves with and without air cavity

Subodh Kumar Sharma1*, P. K. Saini2, N. K. Samria31*2Department of Mechanical Engineering, National In-stitute of Technology Kurukshetra, Kurukshetra, INDIA

Author

Desamsetti. Harikesava,Research Scholar, Department of Thermal Engineering, Aditya Engineering College, Surampalem, Andhra Pradesh, India.

NS Maruthy Vijay Sripada,Assistant Professor, Department of Mechanical Engineer-ing, Aditya Engineering College, Surampalem, Andhra Pradesh, India

S.N.CH.Dattu.V,Assistant Professor, Department of Mechanical Engineer-ing, Aditya Engineering College, Surampalem, Andhra Pradesh, India.

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