Experimental Analysis on the Influence of Compression Ratio, Flow Rate, Injection Pressure and Injection Timing on the Acetylene - Diesel Aspirated Dual Fuel Engine

Abstract

The predicted scarcity, increasing cost of petroleum fuels and environmental degradation are encouraging researchers to search for alternative fuels throughout the world. Hence, it is intended to utilize acetylene-based DF in the compression ignition (CI) engine with minor modifications. An engine of 5 Hp, four stroke, single-cylinder, water-cooled operated in dual-fuel (DF) mode (acetylene gas-diesel), aiming to reduce the emissions, was deployed to investigate its characteristics. In DF mode, gaseous fuel is injected through a gas velocity of 2, 4, and 6 Lpm constantly. According to the research findings, the gas velocity of 6 Lpm provides the best results, having a superior BTE of 30.7%. Various compression ratios (16:1, 18:1, and 20:1) were used to determine the optimal compression ratio (CR) under a gas velocity of 6 Lpm with diesel. Fuel Injector pressure (200, 220, and 240 bar) with injector intervals (19o, 23o, and 27o bTDC) were changed consecutive sequence while adjusting CR, and the best outcomes for improved CI fuel efficiency were determined. From the investigational analysis, the peak in-cylinder pressure and net HRR (heat release rate) are assessed for being better by the increment in CR in DF mode of operation with an acetylene gas of 6 Lpm at all operating settings. At a 240 bar injection pressure, the BTE is recorded highest (35.1%) and smoke was decreased. An IT of 23obTDC, the CO and HC were found as to be minimum as 28ppm and 0.04ppm.

Comparative Investigation of Performance Analysis & Carbon Emission of Biodiesel and Conventional Fuel

“…These properties have solid relationships with their fatty acid composition [12][13][14][15][16][17][18]. Additionally, it was reported from different research studies that biodiesel or blends in CI engines have shown reduced trends in noise pollution and good noise quality [19][20][21][22][23][24][25][26][27]. Moreover, renewable fuels derived from vegetable oils have suitable engine performance, in other operations, some fuels can reduce performance, high carbon and lacquer deposition, and cause of engine damage [28][29][30][31].…”