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Simulation of the Transient Performance of a Turbocharged Diesel Engine Featuring a Two Point Air Injection Transient Assist System

Gilkes, Oliver S., Mishra, Rakesh and Fieldhouse, John D. (2008) Simulation of the Transient Performance of a Turbocharged Diesel Engine Featuring a Two Point Air Injection Transient Assist System. Working Paper. SAE International, London, UK.

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Abstract

Growing global concern pertaining to climate change has meant that engine development has become more focused on engine emissions. A method of reducing the emissions of an internal combustion (IC) engine is to use smaller engines but recover power lost due to reduction in size by using a turbocharger or supercharger. Turbocharged vehicles are commonly used but they exhibit a weak point of poor performance under transient running conditions. The phenomenon, known as 'Turbo-lag,' is most noticeable when a sudden load change is applied at lower engine speeds combined with rapid acceleration.

The work presented analyzes a novel method of improving the transient performance of turbocharged engines by injecting air into both the compressor of the turbocharger as well as inlet manifold of the engine - known as a two-point air injection system. The effect of two-point air injection on the transient performance of a turbocharged engine as well as on emissions has been examined in the present work.

To analyze the effectiveness of the two-point injection system a numerical investigation was carried out on Ricardo WAVE software. The simulation compares engine performance, compressor performance and emission output of the engine. The model has shown that the two-point injection system substantially improves both engine performance and reduces the emissions output from the engine.

Item Type: Monograph (Working Paper)
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Schools: School of Computing and Engineering
School of Computing and Engineering > Automotive Engineering Research Group
School of Computing and Engineering > Pedagogical Research Group
School of Computing and Engineering > Diagnostic Engineering Research Centre
School of Computing and Engineering > Diagnostic Engineering Research Centre > Energy, Emissions and the Environment Research Group
School of Computing and Engineering > Diagnostic Engineering Research Centre > Machinery Condition and Performance Monitoring Research Group
School of Computing and Engineering > Diagnostic Engineering Research Centre > Measurement System and Signal Processing Research Group
School of Computing and Engineering > Informatics Research Group
School of Computing and Engineering > Informatics Research Group > XML, Database and Information Retrieval Research Group
School of Computing and Engineering > High Performance Computing Research Group
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Depositing User: Sara Taylor
Date Deposited: 21 May 2009 10:21
Last Modified: 10 Dec 2010 11:32
URI: http://eprints.hud.ac.uk/id/eprint/4431

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