Simulation of Hydrogen Auto-Ignition in a Diesel Engine
V. A. Bunev1, A. A. Korzhavin1, A. P. Senachin2, P. K. Senachin3,4
1Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2Altai State University, Barnaul, 656038 Russia
3Polzunov Altai State Technical University, Barnaul, 656038 Russia
4Kutateladze Institute of Thermal Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Keywords: hydrogen diesel, induction period, auto-ignition, mathematical model, numerical simulation
Abstract
A mathematical model based on macrokinetics is proposed for the numerical simulation of the auto-ignition period of fuel in a local volume of a hydrogen diesel engine with high pressure fuel injection equipment. Hydrogen auto-ignition in homogeneous chemical reactors for operating conditions of real hydrogen diesel engine at the moment of the start of hydrogen gas injection was simulated using a chosen detailed kinetic mechanism of hydrogen oxidation and a special software package. The results of these simulations for reactors of constant volume and constant pressures were used to derive an equation for the macrokinetics of hydrogen oxidation at high pressures. Using this equation, various operation modes of a hydrogen diesel engine with heating of air and hydrogen were investigated by numerical methods. Ways to reduce the induction period and increase the reliability of the engine are discussed.
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