39 KB206 KB38 KB199920252006Hribernik, Alešštevilka:112 straniletnik:52str. 3-14ISSN:0039-2480COBISSID:9110811URN:URN:NBN:SI:doc-NH5ZSQUDenslAssociation of Mechanical Engineers and Technicians of Slovenia et al.Zveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikbiodizelbrizganje gorivadizelski motorjiizgorevanjemotorji dizelskizgorevanjeVpliv biodizla na vbrizgavanje goriva, zgorevanje, nastanek emisij in značilnice dizelskega motorja z neposrednim vbrizgom| The influence of biodiesel fuel on the injection, combustion, emissions and performance of a direct-injected diesel engine|A study was carried out on the influence of biodiesel fuel on a diesel engine's performance, exhaust emissions, combustion and fuel-injection processes. These tests were performed on a direct-injected diesel engine using standard D2 diesel and commercial 100% biodiesel fuels. The tests were carried out using both fuels, under the same conditions. The exhaust emissions and the engine performance were measured and compared. The in-cylinder pressure was also measured, and the heat-release-rate curves were computed by means of a zero-dimensional one-zone combustion model. Some macro-parameters of the combustion process were obtained from the heat-release-rate curves. The injection system was separated from the engine and tested on a special test bench. The quantity of injected fuel was measured, and the injection pressure and injector-needle lift-time history were measured. The injection-rate curves were then computed and some macro-parameters of the injection process were obtained and analysedDa bi raziskali, kakšen je vpliv biodizla na značilnice zgorevanja in emisije dizelskega motorja, smo opravili primerjalno študijo. Kot pogonsko gorivo dizelskega motorja z neposrednim vbrizgom goriva smo v enakih delovnih razmerah uporabili gorivo D2 in čisti biodizel. Pri tem smo merili osnovne delovne parametre motorja in emisije škodljivih snovi. Prav tako smo posneli potek tlaka v valju motorja in z enodelnim modelom zgorevanja določili potek sprostitve toplote med zgorevanjem. Po poteku sprostitve toplote smo ocenili osnovne makroparametre zgorevanja. Ločeno smo analizirali tudi delovanje sistema za vbrizgavanje goriva. V ta namen smo na preizkuševališču za visokotlačne tlačilke izmerili potek tlaka v visokotlačni cevi in giba igle vbrizgalne šobe ter količino vbrizganega goriva. Tako smo lahko izračunali karakteristiko vbrizgavanja in ocenili osnovne makroparametre vbrizgavanja in jih analizirali v različnih delovnih razmerahTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo