Browse Publications Technical Papers 2016-01-2250
2016-10-17

Alternative Fuel Property Correlations to the Honda Particulate Matter Index (PMI) 2016-01-2250

The Honda Particulate Matter Index (PMI) is a very helpful tool which provides an indication of a fuel’s sooting tendency. Currently, the index is being used by various laboratories and vehicle OEMs as a metric to understand a fuels impact on automotive engine sooting, in preparation for new global emissions regulations. The calculation of the index involves generating detailed hydrocarbon analysis (hydrocarbon molecular speciation) using gas chromatography laboratory equipment and the PMI calculation requires the exact list of compounds and correct naming conventions to work properly. The analytical methodology can be cumbersome, when the gas chromatography methodology has to be adjusted for new compounds that are not in the method, or if the compounds are not matching the list for quantification. Also, the method itself is relatively expensive, and not easily transferrable between labs. Therefore, alternative correlations and methods are being sought which can be easily calculated at laboratories around the world. This paper will explore a few correlation methodologies that could be used to give indication of the sooting tendency of the fuel.

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