▁result ▁in ▁sm og , ▁o zone , ▁and ▁sul fur ▁em issions . ▁The ▁use ▁of ▁these ▁gener ators ▁in ▁resident ial ▁areas ▁around ▁schools , ▁hosp it als , ▁and ▁the ▁general ▁public ▁result ▁in ▁substantial ▁redu ctions ▁in ▁poison ous ▁carbon ▁mon ox ide ▁and ▁partic ulate ▁matter . ▁ ▁Historical ▁background ▁ ▁Trans ester ification ▁of ▁a ▁veget able ▁oil ▁was ▁conducted ▁as ▁early ▁as ▁ 1 8 5 3 ▁by ▁Patrick ▁ ▁D uff y , ▁four ▁dec ades ▁before ▁the ▁first ▁dies el ▁engine ▁became ▁functional . ▁Rudolf ▁Dies el ' s ▁prime ▁model , ▁a ▁single ▁ ▁iron ▁cyl inder ▁with ▁a ▁fly w heel ▁at ▁its ▁base , ▁ran ▁on ▁its ▁own ▁power ▁for ▁the ▁first ▁time ▁in ▁A ugs burg , ▁Germany , ▁on ▁ 1 0 ▁August ▁ 1 8 9 3 ▁running ▁on ▁nothing ▁but ▁pe an ut ▁oil . ▁In ▁rem emb rance ▁of ▁this ▁event , ▁ 1 0 ▁August ▁has ▁been ▁declared ▁" Intern ational ▁B iod ies el ▁Day ". ▁ ▁It ▁is ▁often ▁reported ▁that ▁Dies el ▁designed ▁his ▁engine ▁to ▁run ▁on ▁pe an ut ▁oil , ▁but ▁this ▁is ▁not ▁the ▁case . ▁Dies el ▁stated ▁in ▁his ▁published ▁papers , ▁" at ▁the ▁Paris ▁Ex hib ition ▁in ▁ 1 9 0 0 ▁( Ex position ▁Univers elle ) ▁there ▁was ▁shown ▁by ▁the ▁Otto ▁Company ▁a ▁small ▁Dies el ▁engine , ▁which , ▁at ▁the ▁request ▁of ▁the ▁French ▁government ▁ran ▁on ▁a