A Study for High Efficiency of Diesel Engine in the High Load Operation (First Report)

-Effects of Mixed fuel on Thermal Efficiency and Exhaust Characteristics-

Abstract

In order to reduce the heat loss, it is necessary to grasp the correlation of each physical factor and the experimental parameters such as the injection conditions and nozzle specifications. The correlation was examined in previous report by using the wall insertion type constant volume combustion vessel that can simulate the wall collision of the spray flame in diesel ambient field of high temperature and high pressure. In this report, the effects of mixed fuel on thermal efficiency and exhaust characteristics are examined by using 4 cycle single cylinder diesel engine in the high load operation(Engine speed:2250rpm, IMEPg:1440kPa), and its combustion mechanism is investigated by using RCEM(Rapid Compression and Expansion Machine).