1990-02-01

Reduction of Pollutant Emissions of the IAPAC Two-Stroke Engine with Compressed Air Assisted Fuel Injection 900801

The implantation of the IFP-developed Compressed Air Assisted Fuel Injection process (IAPAC) in a two-stroke engine allows the introduction of the fuel separately from the scavenging air,in order to minimize fuel shortcircuiting.In earlier work, we achieved a drastic reduction of emissions using the IAPAC fuel injection process. Here, we give a precise analysis of the origin of the remaining pollution. The purpose of this analysis is to evaluate the real potential of a high efficiency two-stroke engine in comparison to conventional four-stroke engines, and to define the areas most needful of further development.The new results obtained pointed out how the IAPAC system is particularly well-adapted to take optimum advantages of the two-stroke-cycle principle.

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