Development of a new European Heavy Duty Lubrication Oil Category

Brett, Peter; Thomson, Peter; Signer, Meinrad

doi:10.4271/2000-01-1982

Cited by 2 publications

(1 citation statement)

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“…The test oil quantity was 25 g, the oil temperature was 180°C, Table 3 shows that calcium phenates are more effective antioxidant agents than calcium sulphonates. During the tests, oils containing phenates accumulate fewer oxidation products (7) and the viscosity increases less (Avloo) than for oils with sulphonates. IR spectra confirm this conclusion: the oxidation process for oils containing calcium phenates proceeds more slowly than that for oils containing calcium sulphonates.…”

Section: Detergent-dispersant Additivesmentioning

confidence: 99%

Investigation into the effectiveness of detergent—dispersant agents and additive packages

Vipper

Zadko

Ermolaev

et al. 2004

Lubrication Science

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Comparative tests of more than 15 detergents (calcium sulphonates and phenates) of different basicity and dispersants (succinimides) were carried out using laboratory test methods. The effectiveness of the detergent and dispersant action of the test additives, their thermal, hydrolytic, and colloidal stability, and their influence on the antioxidant properties of engine oils were evaluated. The results obtained showed that it is possible to differentiate additives of various types, and demonstrated the relative efficiency of additives belonging to the same class. The effectiveness of certain additive packages was evaluated using a new approach: in addition to the laboratory methods, the retention of the dispersing ability of additive packages was evaluated in previously oxidised additivated engine oils. This allowed the efficiency of engine oils of different categories to be characterised.

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Section: Detergent-dispersant Additivesmentioning

confidence: 99%