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Intercooler Effect On Conventional Supercharging Systems

Abstract

There are three certain problems in automotive applications that cause environmental effect, cost and comfort problems. Therefore, internal combustion engines are required to have not only a high specific power output but also to release less pollutant emissions. For these reasons, current light and medium duty engines are being highly turbocharged because of having negative environmental effects of internal combustion engines. Due to mentioned facts, there are studies going on to improve internal combustion engine performance. Studies for supercharging systems are also included in this range. One of the most important problems faced in supercharging systems is that air density is decreasing while compressing air. Also air with high temperature causes pre-ignition and detonation at spark ignited engines. Various methods have been developed to cool down charge air which is heated during supercharging process. One of these methods is to use a compact heat exchangers called as intercoolers to cool charging air. The purpose of an intercooler is to cool...

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Detailed Simulation of Turbocharged Engines with Modelica

Abstract

This paper describes the development and application of detailed models for the simulation of turbocharged spark-ignited engines in Modelica. Following a brief overview of previously-published modeling capabilities, a new engine architecture that provides the flexibility required for simulating boosted systems is detailed. Techniques for turbocharger modeling are discussed followed by sample steady state and transient simulations that illustrate potential model usage in design and c

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