Three‐dimensional energetic and exergetic analysis of the injection orientation of DI diesel engine under different engine speeds

摘要: Three-dimensional (3-D) computational code was implemented to solve conservation equations based on finite volume method as simulate 1.8 L Ford diesel engine. Velocity and pressure of each cell is achieved by SIMPLE (semi-implicit for pressure-linked equations) algorithm. For the exergetic aspect, initial condition set at 0.1 MPa 300 K. The engine modeling performed with 130 °, 140 150 ° respect x-axis under 1500 2500 rpm speeds. results, however, indicate better air/fuel mixture (near stoichiometric equivalence ratio) injection angle, albeit smaller spray droplets (lower sauter mean diameter) were introduced °. It seen that higher soot NOx mass fraction attributed 1500 rpm speed. highest are exhausted injection, respectively. Second law efficiency calculated different angle speed schemes such 36.62%, 30.2%, 32.07% associated 1500 rpm, In terms performance, is, indicated effective pressure, specific fuel consumption, temperature, best performance metrics equal 15.4 bar, 0.3856 kg/kW-h, 2074.97 K Instant irreversibility rate amount peak value 17.48 J/deg 130 deg-1500 rpm, while shows over crank (CA) period.