An investigation of the effectiveness of antifriction additives in motor oils by laboratory methods and engine tests

Autor: I. A. Holomonov, S. G. Arabyan, A. K. Karaulov, A. B. Vipper
Rok vydání: 1993
Předmět:
Zdroj: Lubrication Science. 5:241-256
ISSN: 1557-6833
0954-0075
DOI: 10.1002/ls.3010050306
Popis: The antifriction properties of motor oils with different additives (oil soluble metal-containing compounds, molybdenum disulphide and graphite dispersions, and ashless additives) were investigated by means of laboratory methods. The influence of additive concentration on their effectiveness is evaluated. The effect of the action of antifriction additives (friction modifiers) depends on the base oil and motor oil additive packages. The results of experiments are analysed using Auger spectroscopy. A mechanism of action of different types of friction modifiers based on analysis of the experimental data is proposed. Diesel engine tests of motor oils with antifriction additives were used to show the influence of these additives on fuel consumption. The results of engine tests with oils with different additives, and tests conducted on laboratory friction-machines, are compared. A description of the laboratory methods and engine test methods used, as well as recommendations for their practical use in evaluating antifriction properties of motor oil additives, is given.
Databáze: OpenAIRE
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