Numerical simulation of heat transfer on combustion chamber of a gasoline direct injection engine

Publish Year: 1401
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:

ICICE12_044

تاریخ نمایه سازی: 23 خرداد 1401

Abstract:

Analysis of heat transfer of combustion chamber of an engine is essential for boundary condition of thermomechanical analysis of cylinder head, cylinder and piston. For thermal simulation, local and time average heat transfer coefficient on distinct part of combustion chamber need. A computational fluid dynamics (CFD) FLUENT is applied to simulate fluid flow, heat transfer, spray and combustion in a direct injection engine. turbulent kinetic energy, dissipation rate and instantaneous heat transfer coefficient (HTC) on the cylinder head, cylinder wall, piston, spark plug, intake and exhaust valves, intake and exhaust port were determined for local average HTC. Maximum HTC occurs on intake valve surface during full cycle. Then, cylinder head region was divided to two parts, intake and exhaust side and each part divide to five sections. Finally, time average HTC on ten regions on combustion chamber, and liner were calculated for thermal analysis. Contour of HTC at ۵۴, ۳۶۲ and ۵۳۰ deg were shown.

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Authors

Arash Mohammadi

Assistance Professor, Shahid Rajaee Teacher Training University

Sasan Shirvani

K.N. Toosi University of Technology

Saeid Shirvani

Iran Khodro Powertrain Company (IPCO)

Nima Ajami

Iran Khodro Powertrain Company (IPCO)

Amir Hossein Parivar

Iran Khodro Powertrain Company (IPCO)