824 KB16 KB201320252018Konovšek, DamjanStrmčnik, Ervinletnik:11številka:iss. 4str. 19-27COBISSID:1024345180ISSN:1855-5748URN:URN:NBN:SI:doc-EC1ANLM9enFakulteta za energetikoJET on-lineJournal of energy technologyenergetska učinkovitostenergy efficiencymobile hydraulicsmobilna hidravlikaoptimizacijaoptimizationEnergy efficiency analysis in mobile hydraulics| Analiza energetske učinkovitosti v mobilni hidravliki|The primary purpose of this paper is to estimate possible energy and cost savings in the optimization of mobile hydraulics. A gerotor is a low-speed, high-torque hydraulic motor, which is very rarely described in the literature and often use in mobile hydraulics. In this paper, the total efficiency of the hydraulic motor was investigated. The influence of the size of the holes in the valve plate on the total efficiency of the gerotor was analysed. The total efficiency is the most important and prominent information about the energy conversion of hydraulic components, such as hydraulic motors and pumps. The operation of a gerotor is briefly described as well as some equations for the determination of displacement and efficiency. The results show that there is a correlation between the size of holes in the valve plate and the total efficiency of the gerotor. Furthermore, a very high total efficiency was obtained with the hole size of O6.3 mm. In that case, the total efficiency was on average 16.1% higher in comparison to the total efficiency when the hole size was O5.5 mm. It plays a significant role in possible reductions in energy cost. Energy analysis and cost estimation were conductedGlavni namen raziskave je bil oceniti energetske in stroškovne prihranke, ki so posledica optimizacije v mobilni hidravliki. Gerotor je počasno vrteč hidravlični motor za premagovanje velikih momentov. Takšen hidravlični motor je redko opisan v literaturi, ampak pogosto uporabljen v praksi. V prispevku je raziskana možnost povečanja skupnega izkoristka takšnega hidravličnega motorja zaradi spreminjanja velikosti lukenj v ventilski plošči. Skupni izkoristek je merilo, kako učinkovita je pretvorba hidravlične energije v mehansko delo. V prispevku je predstavljeno delovanje hidravličnega motorja in postopek določitve skupnega izkoristka. Rezultati so pokazali, da velikost lukenj pomembno vpliva na skupni izkoristek. Pri velikosti lukenj O6.3 mm je bil skupni izkoristek kar 16.1% večji kot pri velikosti lukenj O5.5 mm. To je pomembo dejstvo, ki nas je spodbudilo, da smo opravili energetsko analizo in ocenili možne prihranke, ki bi jih lahko dosegliTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Mariboru, Fakulteta za energetiko