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Investigation of Exhaust Valve Failure in Heavy â?? duty Diesel Engine

Year 2010, Volume: 23 Issue: 4, 493 - 499, 23.09.2010

Abstract

 

The exhaust valves of a diesel engine are exposed to thermal and mechanical overstress which may be sources of valve failures.  The exhaust valves usually fail as a result of different failure modes such as wearing, fatigue and corrosion. In order to describe these modes a failed exhaust valve which was belonged to a heavy-duty diesel engine is investigated. The investigation of the failure was carried out by using several experimental tests including optical emission spectroscopy, optical microscopy, scanning electron microscopy SEM and EDX. It was found that the carbon content of the material of the failed valve decreased. Angular titanium phases were found in microstructure of the material of the failed valve. Fuel-born vanadium and chromium carbide were detected on the surface of the valve. It was concluded that the valve was broken down before its expected service life. 

 

Key Words: Failure; exhaust; valve; diesel; corrosion.

References

  • Wang, Y.S., Narasimhan, S., Larson, J.M., ‘‘Schaefer, S.K. Wear and wear mechanism simulation of heavy-duty engine intake valve and seat inserts’’, Journal of Materials Engineering and Performance, 7(1): 53-65 (1998).
  • Zhao, Y.C., Yan, H.Z., ‘‘Experimental study on wear failure course of gas-valve/valve-seat in engine’’, J. Cent South Univ. Tecnol., 12(1): supp1. (1995).
  • Lewis, R.D, Joyce, R.S., ‘‘Combating automotive engine valve recession’’, Tribology & Lubrication, 139c; Available from http//findarticles.com, (2003).
  • Chun, K.J., Kim, J.H., Hong, J.S., ‘‘A study of exhaust valve and seat insert wear depending on cycle numbers’’, Wear, 263:1147–1157 (2007).
  • Nanda, S.K., Roskilly A.P., ‘‘Exhaust valve failure under residual fuel operation’’, Journal of Marine Design and Operations, University of Newcastle Upon Tyne No B2, 23-28 (2003).
  • Carley, L.,‘‘Valve Guide Repair Options’’, Engine Builder, http://www.enginebuildermag.com, (1996).
  • Arifin, Y.M., Arai, M., ‘‘The effect of hot surface temperature on diesel fuel deposit formation’’, Fuel, (article in press.)(2009).
  • Arifin, Y.M., Arai, M., ‘‘Deposition characteristics of diesel and bio-diesel fuels’’, Fuel, 88: 2163– 2170 (2009).
  • Frellmanni, H., Groβ, T., Ludwig, T., ‘‘Typical wear mechanism of 2-stroke exhaust valves’’ MarkischesWerkGmbH, http://www.mwh.de /Service/~/media/8CEF943B88BE4674982E0DC5 A23E1268.ashx(2004).
  • Tunnecliff, T., ‘‘Valve failure analysis: reading valve failure mark’’, Eaton valve engineering notes and topics, Reprinted from Eaton Corporation's The Valve Event, 3(10): http://www.campbellenterprises.com/tech_help/ma nley_valve_failure_analysis_clues.htm(1995).
  • ASM, Metals Handbook, 8. Edition, Properties and Selection, 1: 626 (1967)
  • Yu, Z.W., Xu, X.L., ‘‘Failure analysis and metallurgical investigation of diesel engine exhaust valves’’, Engineering Failure Analysis, 13: 673- 682 (2006).
Year 2010, Volume: 23 Issue: 4, 493 - 499, 23.09.2010

Abstract

References

  • Wang, Y.S., Narasimhan, S., Larson, J.M., ‘‘Schaefer, S.K. Wear and wear mechanism simulation of heavy-duty engine intake valve and seat inserts’’, Journal of Materials Engineering and Performance, 7(1): 53-65 (1998).
  • Zhao, Y.C., Yan, H.Z., ‘‘Experimental study on wear failure course of gas-valve/valve-seat in engine’’, J. Cent South Univ. Tecnol., 12(1): supp1. (1995).
  • Lewis, R.D, Joyce, R.S., ‘‘Combating automotive engine valve recession’’, Tribology & Lubrication, 139c; Available from http//findarticles.com, (2003).
  • Chun, K.J., Kim, J.H., Hong, J.S., ‘‘A study of exhaust valve and seat insert wear depending on cycle numbers’’, Wear, 263:1147–1157 (2007).
  • Nanda, S.K., Roskilly A.P., ‘‘Exhaust valve failure under residual fuel operation’’, Journal of Marine Design and Operations, University of Newcastle Upon Tyne No B2, 23-28 (2003).
  • Carley, L.,‘‘Valve Guide Repair Options’’, Engine Builder, http://www.enginebuildermag.com, (1996).
  • Arifin, Y.M., Arai, M., ‘‘The effect of hot surface temperature on diesel fuel deposit formation’’, Fuel, (article in press.)(2009).
  • Arifin, Y.M., Arai, M., ‘‘Deposition characteristics of diesel and bio-diesel fuels’’, Fuel, 88: 2163– 2170 (2009).
  • Frellmanni, H., Groβ, T., Ludwig, T., ‘‘Typical wear mechanism of 2-stroke exhaust valves’’ MarkischesWerkGmbH, http://www.mwh.de /Service/~/media/8CEF943B88BE4674982E0DC5 A23E1268.ashx(2004).
  • Tunnecliff, T., ‘‘Valve failure analysis: reading valve failure mark’’, Eaton valve engineering notes and topics, Reprinted from Eaton Corporation's The Valve Event, 3(10): http://www.campbellenterprises.com/tech_help/ma nley_valve_failure_analysis_clues.htm(1995).
  • ASM, Metals Handbook, 8. Edition, Properties and Selection, 1: 626 (1967)
  • Yu, Z.W., Xu, X.L., ‘‘Failure analysis and metallurgical investigation of diesel engine exhaust valves’’, Engineering Failure Analysis, 13: 673- 682 (2006).
There are 12 citations in total.

Details

Primary Language English
Journal Section Mechanical Engineering
Authors

Nurten Vardar

Ahmet Ekerim This is me

Publication Date September 23, 2010
Published in Issue Year 2010 Volume: 23 Issue: 4

Cite

APA Vardar, N., & Ekerim, A. (2010). Investigation of Exhaust Valve Failure in Heavy â?? duty Diesel Engine. Gazi University Journal of Science, 23(4), 493-499.
AMA Vardar N, Ekerim A. Investigation of Exhaust Valve Failure in Heavy â?? duty Diesel Engine. Gazi University Journal of Science. September 2010;23(4):493-499.
Chicago Vardar, Nurten, and Ahmet Ekerim. “Investigation of Exhaust Valve Failure in Heavy â?? Duty Diesel Engine”. Gazi University Journal of Science 23, no. 4 (September 2010): 493-99.
EndNote Vardar N, Ekerim A (September 1, 2010) Investigation of Exhaust Valve Failure in Heavy â?? duty Diesel Engine. Gazi University Journal of Science 23 4 493–499.
IEEE N. Vardar and A. Ekerim, “Investigation of Exhaust Valve Failure in Heavy â?? duty Diesel Engine”, Gazi University Journal of Science, vol. 23, no. 4, pp. 493–499, 2010.
ISNAD Vardar, Nurten - Ekerim, Ahmet. “Investigation of Exhaust Valve Failure in Heavy â?? Duty Diesel Engine”. Gazi University Journal of Science 23/4 (September 2010), 493-499.
JAMA Vardar N, Ekerim A. Investigation of Exhaust Valve Failure in Heavy â?? duty Diesel Engine. Gazi University Journal of Science. 2010;23:493–499.
MLA Vardar, Nurten and Ahmet Ekerim. “Investigation of Exhaust Valve Failure in Heavy â?? Duty Diesel Engine”. Gazi University Journal of Science, vol. 23, no. 4, 2010, pp. 493-9.
Vancouver Vardar N, Ekerim A. Investigation of Exhaust Valve Failure in Heavy â?? duty Diesel Engine. Gazi University Journal of Science. 2010;23(4):493-9.