Performance and Analysis of Diesel Engine at Various Injection Timings under various Cooling Rates during Shorter Injection Period

Abstract

An experimental investigation was carried out to find out the effect of injection timing on performance and emissions of a single cylinder, 4 stroke, and compression ignition engine at various cooling rates. Original injection period of the engine was 24o CA and injection starts at 14o CA BTDC, injection timings were reduced to 22o and 20o CA by delaying the starting of injection at 12o and 10o CA BTDC. Several experimental cycles were conducted at various loads i.e., at 0.5, 1, 1.5, 2, 2.5, 3KW load at cooling rates of 3, 4, 6lpm of engine water cooling rate. Emissions such as NOx, CO, CO2, UHC and unreacted oxygen were measured by using multi gas exhaust analyzer.