The development of simple, inexpensive and reliable bench tests to screen performance of anti-wear components prior to their evaluation in engines is very attractive. The present paper describes the development of a new bench test procedure allowing proper discrimination of performance of chemical additives in a fully formulated lubricating oil environment. A suitable 'Block-on-Ring' laboratory machine was selected based on 1/ adhesive wear theoretical studies 2/ the investigation of cam and follower wear mechanical phenomena, also with the help of the engine test parameters from the CEC L-38-A-94 (PSA TU3M) procedure. Several key parameters (load, sliding speed, mechanicalcharacteristics of the friction material parts, lubrication type ) were identified as crucial to create adhesive wear during the CEC L-38-A-94 engine test, and were investigated to develop this new laboratory screening test. The newly developed procedure correctly ranked the two CEC L-38-A-94 reference oils, and more interestingly, this laboratory screening test properly ranked candidate oils of well known performance in the CEC L-38-A-94 engine test.
The development of a laboratory screening test to evaluate anti-wear additives for automotive engine oils
Entwicklung eines Laboratorium-Reihenprüfverfahrens für die Bewertung der Verschleißschutzadditive für Automotoröle
2000
10 Seiten, 6 Bilder, 9 Tabellen, 11 Quellen
Conference paper
English
Development of a Wear Test Procedure to Evaluate Automotive Lubricating Oils
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