SUSTAV GORIVA I PODMAZIVANJA GLAVNOG POGONSKOG MOTORA BRODA ZA PRIJEVOZ BITUMENA

Ovim radom obrađeni su sustav goriva i sustav podmazivanja sporohodnog dvotaktnog brodskog motora. Nabrojane su vrste brodskih goriva koje se koriste za pogon brodskog motora, opisani procesi proizvodnje brodskih goriva i opisana njihova kemijska i fizička svojstva bitna za rad motora. Opisuje se sustav goriva od ukrcaja goriva na brod te su nabrojani i svi dijelovi sustava i opisana njihova uloga u pripremi brodskog goriva. Na temelju snage motora i specifične potrošnje goriva, napravljen je proračun glavnih dijelova sustava goriva, kapaciteta pumpi goriva i centrifugalnih separatora, promjera cjevovoda, i odabrana je oprema koja zadovoljava vrijednosti dobivene proračunom. Objašnjena je uloga maziva i značaj podmazivanja u radu dvotaktnog brodskog motora. Opisuje se proizvodnja baznih mineralnih ulja i njihovo legiranje s aditivima radi dobivanja traženih fizikalnih i kemijskih svojstava bitnih za podmazivanje motora. Napravljen je proračun sustava podmazivanja kojim je određen potreban protok ulja u sustavu ulja i u skladu s tim odabrana potrebna oprema sustava podmazivanja.This master’s thesis deals with fuel oil system and lubrication oil system for slow speed two-stroke marine diesel engine. Marine fuel oil types are listed along with their chemical and physical characteristics important for engine operations, with the description of the process of production marine fuel oil. Description of marine fuel oil system starts with fuel oil bunkering and continues to the listing of all system equipment along with their role in fuel oil treatment, including also the preparation on-board. Main equipment and piping are selected from results of calculation which is based on diesel engine power and specific fuel oil consumption. Lubrication oil usage on-board is explained, as well as the significance of lubrication for safe and smooth diesel engine operation. This thesis also reflects on the matter of the production of base mineral oils, together with their blending, accompanying additives for producing lubrication oil. It also includes the elucidation of wanted chemical and physical characteristics for diesel engine lubrication. Calculation is made to find out needed amount of lubrication oil flow through the system, and lubrication oil system equipment is selected on the basis of this calculation