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Sooted Diesel Engine Oil Pumpability Studies as the Basis of a New Heavy Duty Diesel Engine Oil Performance Specification
Technical Paper
2002-01-1671
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Changing diesel engine emission requirements for 2002 have led many diesel engine manufacturers to incorporate cooled Exhaust Gas Recirculation, EGR, as a means of reducing NOx. This has resulted in higher levels of soot being present in used oils.
This paper builds on earlier work with fresh oils and describes a study of the effect of highly sooted oils on the low temperature pumpability in diesel engines. Four experimental diesel engine oils, of varying MRV TP-1 viscosities, were run in a Mack T-8 engine to obtain a soot level ranging between 6.1 and 6.6%. These sooted oils were then run in a Cummins M11 engine installed in a low temperature cell. Times to lubricate critical engine components were measured at temperatures ranging between -10 °C and -25 °C.
A clear correlation was established between the MRV TP-1 viscosity of a sooted oil and the time needed to lubricate critical engine components at a given test temperature.
The results of this study were used to propose meaningful limits on sooted oil pumpability for PC-9 (API CI-4) and OEM specifications.
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Citation
Stehouwer, D., Shank, G., Herzog, S., Hyndman, C. et al., "Sooted Diesel Engine Oil Pumpability Studies as the Basis of a New Heavy Duty Diesel Engine Oil Performance Specification," SAE Technical Paper 2002-01-1671, 2002, https://doi.org/10.4271/2002-01-1671.Also In
Lubricant Systems, Passenger Car, and Heavy Duty Engine Lubricants
Number: SP-1710; Published: 2002-05-01
Number: SP-1710; Published: 2002-05-01
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