A One-Dimensional Numerical Model for High-Performance Two-Stroke Engines

Computer software that simulates the thermodynamic and gas dynamic properties of internal combustion engines can play a significant role in design optimization engines. In present work, quasi-dimensional numerical model for two-stroke is presented. Particular attention was paid to reporting in-cylinder models, (turbulent with flame development flame–wall interaction), turbulence (K-k-ϵ model), addition tumble- squish-generated quite common such The aim reduce calibration constants, which are fundamental correlating models experiments, relations calculating tumble ratio turbulent scales were reported. A one-dimensional manifolds also presented (solving Euler equations), using second-order Roe Riemann solver some improvements, paying particular source terms, as area variation. Additionally, new approach end-pipe boundaries, would mass conservation error, tested two kart engines, used racing purposes: IAME X30 engine Screamer III KZ engine. comparison between results experimental data made, good accordance observed, root mean square error about 0.5 kW providing accuracy evaluating changes, chamber squish exhaust pipe length.