Improvement of Thermal Efficiency and Exhaust Emission in Diesel Engine by Applying Spray Internal EGR (Fifth Report)

- Effects of CO₂ Gas Dissolved Fuel on Thermal Efficiency and Exhaust Characteristics -

Abstract

The purpose of this study is to improve the thermal efficiency of diesel engine by EGR gas dissolved fuel. The fuel improves spray atomization by EGR gas effervescent. Use of EGR gas dissolved fuel can be expected to reduce wall heat loss and PM emissions due to lean combustion. In addition, the reduction of NOx is expected by spray internal EGR effect using gas dissolved fuel. In this report, CO2 gas is dissolved in n-tridecane, the CO2 gas dissolved fuel is evaluated the effects on combustion characteristics and emissions compared with the conventional external EGR using diesel engine.