Reduction of Diesel Exhaust Smoke by Air-Mixed Fuel Injection

In order to reduce smoke exhaust from diesel engines, experimental research was conducted on the forced mixing and dissolving of air into diesel fuel and on operation of diesel engines with such fuel.

First, an air-fuel mixing system was made, which could be mounted and operated on existing diesel engines with minimum alteration to the fuel injection system, and the performance of the mixing system was investigated. Then, the system was applied to a single-cylinder test engine which could be operated both as a prechamber type and as a direct injection type engine; it was test operated with these two combustion methods, and an effective reduction in the density of exhaust smoke was confirmed.