This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
How Sulfated Ash in Oils Causes Catastrophic Diesel Exhaust Valve Failures
Annotation ability available
Sector:
Language:
English
Abstract
The way in which exhaust valve failure is caused by the ash in crankcase oils is not well understood. This study provides an in-depth analysis of the failure mechanism. It includes: a field test, dynamometer tests, deposit and metallurgical analysis.
The valves fail due to high-temperature oxidation and erosion. This results from a loss of deposit from the valve seat. There was a direct relation between the level of sulfated ash in the oil and the time to valve failure.
The paper provides recommendations on the type of oils required to prevent these failures in two-cycle engines.
Recommended Content
Authors
Citation
McGeehan, J., Gilmore, J., and Thompson, R., "How Sulfated Ash in Oils Causes Catastrophic Diesel Exhaust Valve Failures," SAE Technical Paper 881584, 1988, https://doi.org/10.4271/881584.Also In
References
- McGeehan J. A. Painter L. J. “Field Performance of SAE 15W-40 Multigrade Oils in DDA 8V-92 Engines Using Current and New Piston Fire Rings SAE Paper 870402 1987
- Arnold E. B. Bara M. A. Zang D. M. Tunnecliffe T. N. Oltean J. “Development and Application of a Cycle for Evaluating Factors Contributing to Diesel Engine Valve Guttering,” SAE Paper 880669 1988
- McGeehan J. A. Kulkarni A. V. “Mechanism of Wear Control by the Lubricant in Diesel Engines,” SAE Paper 872029 1987
- Diesel Fuels Oils 1987 to 1984 National Institute for Petroleum and Energy Research
- Chaudhuri Asim “Hot Corrosion of Diesel Engine Exhaust Valves,” SAE Paper 730679 1973
- Johnson V. A. Galen C. W. “Diesel Exhaust Valves,” SAE Paper 660034 1966
- Kvernes I. Kofstad P. Seiersten M. “High Temperature Corrosion and Protection of Diesel Engine Valves,” March 1982
- Communication between Walter Kleban and Roy Smith at Detroit Diesel Corporation and J. A. McGeehan
- Communication with Caltex and Detroit Diesel Allison service engineering
- Chevron Field Test Report, Detroit Diesel Allison 8V-71 NA Field Test at Soaky Architect Trucking in Portland Oregon
- “Failure Analysis and Prevention,” Metals Handbook Ninth 11 270 271
- Pettit F. S. Goward G. W. “High Temperature Corrosion and Use of Protective Coating,” American Society of Metals Superalloys: Source Book 1984
- Giggins C. S. Pettit F. S. “Oxidation of Ni-Cr Alloys Between 800-1200°C,” Trans, of the Metallurgical Society of AIME 245 December 1969 2497
- Whittle D. P. Hindam H. “Microstructure and Growth of Protective Cr 2 O 3 and Al 2 O 3 Scales at High Temperatures,” Corrosion-Erosion-Wear of Materials in Emerging Fossil Energy Systems NACE 1982
- Whittle D. P. “High Temperature Oxidation of Superalloys,” High Temperature Alloys for Gas Turbines,” Applied Science Publisher London 1978
- Authors, Communications with Mr. W. Stimpson Carpenter Steel Company Reading, Pennsylvania, U.S.A.
- Barkalow R. H. Petite F. S. “Corrosion of Materials in Coal Combustion Gas Turbines,” Corrosion/Erosion of Coal Conversion. System Materials Conference NACE 1979
- Newton J. A. Palmer J. L Reddy V. C. “Factors Affecting Diesel Exhaust Valve Life,” SAE Paper 190 November 1953
- Danis L. J. “Recent Engine Valve Technology,” SAE Paper 500B 1962
- Tunnecliffe T. N. Jenkins L F. “Why Valves Succeed,” SAE Paper 249B 1960
- Tantet J. A. Brown P. I. “Series 3 Oils and Their Suitability for Wider Applications,” NPRA September 1965
- Schirmer R. M. Quigg H, T. “Effect of JP-5 Sulfur Content on Hot Corrosion of Superailoys in Marine Environment,” Philadelphia American Society for Testing and Materials 1967 270 296
- Danek G. J. “State of the Art Survey on Hot Corrosion in Marine Turbines,” Naval Engineers Journal December 1965
- Viswanathan R. “High Temperature Corrosion of Some Gas Turbine Alloys,” Corrosion 24 11 November 1968 359 368
- Seybolt A. U. “Contribution to the Study of Hot Corrosion,” Trans. AIME 242 September 1968 1955 1961
- Decrescente M. A. Bornstein N. S. “Formation and Reactivity Thermodynamics of Sodium Sulfate with Gas Turbine Alloys,” Metallurgical Transactions 24 5 May 1968
- Lange G. A. System Analysis of Technical Failures-P. H. Effertz “Failure Due to Corrosion at High Temperatures,” Obervrel, Germany 1986
- Shirley H. T. “Effects of Sulfate-Chloride Mixtures in Fuel-Ash Corrosion of Steels and High Nickel Alloys.”
- Bergman P. A. “Hot Corrosion of Gas Turbine Alloys,” Corrosion March 1967
- Johnson V. A. Wilde R. A. “High Temperature Corrosion Testing of Valve Alloys,” Symposium on Testing Methods for Conducting High Temperature Oxidation and Corrosion Studies at the 71st Annual Meeting of the Society June 23-38 1968