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Low viscosity oils impact on heavy duty diesel engine components

REJOWSKI, Edney Deschauer ; TOMANIK, Eduardo ; SOUZA, Juliano Pallaoro ;

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Increasing fuel costs and stringent emissions standards in the world became the most important challenges for the transportation industry. The use of low viscosity oils is considered an effective way to reduce fuel consumption of Heavy Duty Diesel (HDD) engines. However, the impact of oil viscosity reduction and novel additive packages needs to be better understood in durability of engine components. This paper investigated the application of a low viscosity oil SAE 10W-30 (HTHS 2.9cP) with novel formulation prepared to withstand EURO VI and OEM demands, through a 500 hours durability dynamometer test with extended oil drainage interval. The main tribo system such as liner-rings-piston, rod bushing-pin-piston and rod-bearing-crankcase were evaluated in terms of wear impact by visual and dimensional analyzes. The results obtained with low viscosity oil test were compared with the same engine components which were tested with typical SAE15W-40 oil (HTHS 3.7cP min.) applied in EURO V/VI HDD engines. From the comparative analyses, it was possible to identify some engine components that do not require design updates or technologies changes. For others, it was possible to anticipate performance issues that will demand new design and or material upgrades. Oil analyses were done each 50h of test. The oil degradation due to the extended drainage time is discussed in this paper.

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DOI: 10.5151/engpro-simea2016-PAP20

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Como citar:

REJOWSKI, Edney Deschauer; TOMANIK, Eduardo; SOUZA, Juliano Pallaoro; "Low viscosity oils impact on heavy duty diesel engine components", p. 118-130 . In: Anais do XXIV Simpósio Internacional de Engenharia Automotica - SIMEA 2016 [=Blucher Engineering Proceedings].. São Paulo: Blucher, 2016.
ISSN 2357-7592, DOI 10.5151/engpro-simea2016-PAP20

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