Experimental Study of Ignition Delay of Homogeneous Supercritical Fuel Sprays of Dieseline Blend in Constant Volume Combustion Chamber

摘要

Increasing environmental concern and stringent emissions regulations about pollutant and greenhouse gas emissions from internal combustion engines (ICE) along with depleting petroleum fuel resources clearly demands a breakthrough technology for ICE. One promising solution was proposed by some researchers towards improving fuel conversion efficiency and significantly reducing exhaust emissions from diesel engines. The core of this proposed solution is the injection of fuel as supercritical fuel (SCF) or in SC state directly into the combustion chamber of the engine. It is found in some studies that 80-90% NO_x and PM have been reduced in SC fuel spray injection and combustion. Thermodynamically, SC state is that state of substance when the pressure and temperature of a substance are above its critical point. Diesel fuel (DF) has enticing properties in the SC state.