The Effect of Fuel Compounds on Pre-ignition under High Temperature and High Pressure Condition

Abstract

<div class="section abstract"><div class="htmlview paragraph">Turbocharged (TC) engines have been introduced these days to improve the fuel economy. It is considered that one possible issue of the TC engine is a pre-ignition at high engine speed because of high temperature and high pressure in the combustion chamber.</div><div class="htmlview paragraph">This study shows the effect of fuel compounds on pre-ignition at 4400rpm. The experimental engine is a naturally-aspirated (NA) engine which is customized to imitate the cylinder temperature and pressure of TC engines.</div><div class="htmlview paragraph">It is known that research octane number (RON) describes anti-knock quality well. Meanwhile the results show that pre-ignition characteristic at high engine speed is dominated by motor octane number (MON) and auto-ignition temperature (AIT) rather than RON.</div></div>