Development of a Bench Test to Detect Oils Corrosive to Engine Components

Paper #:
  • 940790

Published:
  • 1994-03-01
Citation:
Wang, J. and Cusano, C., "Development of a Bench Test to Detect Oils Corrosive to Engine Components," SAE Technical Paper 940790, 1994, https://doi.org/10.4271/940790.
Pages:
9
Abstract:
Corrosive wear of non-ferrous engine components by lubricants is a concern of all major heavy duty diesel engine manufacturers since warranty on key engine components has been extended to 500,000 miles. Several commercial lubricants have been linked to premature cam and rod bearing failures induced by corrosion in certain fleets. Although the overall failure rate is low, specific fleets have experienced significantly higher failure rates due to the lubricants used. These failures usually occur at high mileages but less than 500,000 miles. This kind of slow corrosion easily escapes detection of engine tests contained in current oil specifications, and it represents a serious issue in long term warranty cost to diesel engine manufacturers. A comprehensive fleet database has been established to identify the most corrosive lubricants. These lubricants have served as reference oils to develop a corrosion bench test. Adopting such a test will have a great impact on long term durability of heavy duty diesel engines.
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