Increased Mixing Rate Using an Energy Cell In a Two-Stroke, Spark-Assisted DI Diesel Engine

A unique combustion system using an energy cell was designed during the course of this two-stroke, spark-assisted DI diesel engine development program. The system generated high gas turbulence and significantly increased fuel-air mixing rate during combustion. Using the spark-assisted diesel engine concept, this system allowed modification of a production, loop-scavenged, two-stroke gasoline engine to increase fuel tolerance, decrease fuel consumption to levels close to diesel engines, and produce a power-to-weight ratio comparable to a gasoline engine.

The experimental engine was constructed and developed by Southwest Research Institute and the project was funded by Sanshin Industries. This paper summarizes the results of the project.