نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this study, the SI engine piston heat transfer is calculated applying three different models for the heat
transfer modeling. In the first model, three approximate and constant temperatures are selected for piston,
cylinder and cylinder head and determined the in-cylinder gas temperature, pressure and convection coefficients
using two-zone combustion model. In the second model for each of the walls (piston, cylinder and
cylinder head), the relevant heat transfer equations with two zone model solved considering three unknown
temperature. In third model that is the most accurate method, 24 heat transfer equations coupled with the
two zone model were solved simultaneously based on resistor-capacitor thermal network model. Eventually,
the three model results compared to study their effect on the piston thermal behavior. It has been shown that
using of resistor-capacitor model with less number of equations and consequently less time solution is an
appropriate method for solving problems of engine heat transfer. The simulations were done by a MATLAB
code and the results have been validated with the experimental data of the EF7.TC engine.
کلیدواژهها [English]
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