Search Results

Our aim to develop an engine to drive an emergency portable fire pump resulted in the development of a small-light-weight 2-stroke diesel spark ignition engine which utilized an ultrasonic atomizer. As the base engine we used a 499cc twin cylinder 2-stroke S.I. outboard motor engine. The fuel supply for this engine was controlled by a carburetor. In this original form it was not possible to run the base engine using only diesel fuel and although a mixture of diesel fuel and gasoline would run the engine it produced a large quantity of white smoke emissions. To solve these problems it became necessary to atomize the diesel fuel, improve the fuel-air mixture and facilitate easier combustion. First we installed an ultrasonic atomizer to the intake of the base engine. Due to the fine spray and low penetration produced by the ultrasonic atomizer we obtained good mixture and distribution.