Direct Injection Diesel Engine Performance Improvement and Emission Control using Boost Pressure

The present investigation is to analyse the influence of boost pressure and injection pressure on combustion process and emissions for various engine loads and speeds. A single cylinder diesel engine that is equipped with a manual direct injection system is considered for the experimental work. Emissions such as HC, NOx and brake specific fuel consumption were monitored using gas analyzer. A turbocharger and dilution tunnel is designed such a way that a boost pressure will be created from the compressor driven turbine using engine exhaust. The compressed air was mixed with the exhaust gas in the dilution tunnel to oxidize the hydrogen and carbon into water vapour and carbon dioxide.