Browse Publications Technical Papers 2003-01-3168
2003-10-27

An Investigation Into the Effect of a Diesel/Water Emulsion on the Size and Number Distribution of the Particulate Emissions from a Heavy-Duty Diesel Engine 2003-01-3168

The current test programmes have measured emissions from a heavy-duty bus engine installed on a test bench and also on a chassis dynamometer whilst running on a Diesel/water emulsion fuel. Testing was carried out over both steady state and transient test cycles. Emissions were also measured on the test bed from the engine fitted with both a Diesel particulate filter and an oxidation catalyst. Alongside the measurement of the regulated emissions, particle number distributions (by size) and total particle counts were also measured. Size selected particle counts were made over the transient tests and are compared between engine test and chassis dynamometer. This paper demonstrates the influence of the emulsion on the particle size distribution, the effects of after-treatment and lubricant on the particle size emissions of an engine running on an emulsion and also the influence of sampling conditions on the measurements recorded.

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