How Sulfated Ash in Oils Causes Catastrophic Diesel Exhaust Valve Failures Chevron Research Company Richmond, California

Format:

Conference/Event

Author/Creator:

McGeehan, J. A., author.

Conference Name:

1988 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1988-10-10 : Portland, Oregon, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

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

Notes:

Vendor supplied data

Publisher Number:

881584

Access Restriction:

Restricted for use by site license