Diesel Engine Exhaust Smoke: The Influence of Fuel Properties and the Effects of Using Barium-Containing Fuel Additive

Even though the combustion gases of diesel fuel are much less toxic than those of gasoline, exhaust smoke has increased proportionately with the number of diesels in use and has become a major problem. This paper describes the influence of base fuel composition on smoke, and the results of using a barium-containing additive in the fuel. The toxicological aspects of using the additive are considered, together with certain other side effects that might arise. Details are also given of the various means for measuring smoke, and of existing legislation to control the nuisance.