Browse Publications Technical Papers 2019-01-0038
2019-01-15

Fuel and Lubricant Effects on Stochastic Preignition 2019-01-0038

In this multi-part effort, fuel and lubricant effects on stochastic preignition (SPI) were examined. First, the behavior of fuels for which SPI data had previously been collected were characterized in terms of their combustion and emissions behavior, and correlations to their SPI behavior were examined. Second, new SPI data was collected for a matrix of fuels that was constructed to test and confirm hypotheses that resulted from interpretation of the earlier data in the study and from data in open literature. Finally, the interaction of select fuels with lubricants that were expected to exhibit varying SPI propensities was examined. Although this final dataset did not yield conclusive results, it suggests that additional factors such as engine condition can have a very significant effect of SPI propensity.

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