Improvement Of Engine Performance Using Diethylene Glycol Dimethyl Ether (DGM) As Additive

Abstract

This research work investigates diesel combustion and exhaust emissions with additives addition to conventional diesel fuel in a four-stroke naturally aspirated direct injection (DI) diesel engine. The additives include DGM, and liquid cerium. The results show that with the addition of DGM to diesel fuel, brake specific energy consumption (BSEC) and all diesel emissions are significantly reduced. The volumetric blending ratios of additives to diesel fuel are 0, 25, 50, 75 and 100%. All emissions including smoke emissions decrease with the increase in oxygen content in the fuel and it is noted that smoke emission completely disappeared at an oxygen content of 36 wt–%. The reason for improvement in BSEC with the addition of additives to base diesel fuel is the improvement of degree of constant volume combustion, and the reduction of the cooling loss. Engine noise and odor concentrations are remarkably reduced with diesel-additive blends. Significant improvement in BSEC and exhaust emissions is not only found at medium load condition but also at high load condition. Key words: Diesel engine, DGM, emissions, BSEC, and cooling loss

Biodiesel Exhaust Toxicity with and without Diethylene Glycol Dimethyl Ether Fuel Additive in Primary Airway Epithelial Cells Grown at the Air–Liquid Interface

“…Further increasing the oxygen content of biodiesel fuels could result in further reduction of PM , and thus potentially reduced toxicity from exhaust exposure. This can be achieved using fuel additives that are high in oxygen content, one of which is diethylene glycol dimethyl ether (DGDME, chemical formula C 6 H 14 O 3 ) .…”

“…This can be achieved using fuel additives that are high in oxygen content, one of which is diethylene glycol dimethyl ether (DGDME, chemical formula C 6 H 14 O 3 ) . This potential additive is 35% by weight oxygen, which is more than three times that of most biodiesels at approximately 11% . The oxygen atoms in the smaller DGDME molecule are more dispersed which may further help combustion, whereas the FAME oxygen atoms are concentrated at one end of the molecule with a long carbon chain at the other. , Usage of this fuel additive has had benefits on diesel exhaust components, with an increasing percentage of DGDME being added to the fuel resulting in increasing reductions in PM .…”

“…This potential additive is 35% by weight oxygen, which is more than three times that of most biodiesels at approximately 11% . The oxygen atoms in the smaller DGDME molecule are more dispersed which may further help combustion, whereas the FAME oxygen atoms are concentrated at one end of the molecule with a long carbon chain at the other. , Usage of this fuel additive has had benefits on diesel exhaust components, with an increasing percentage of DGDME being added to the fuel resulting in increasing reductions in PM . The trend in NOx emissions is more contradictory, with studies finding both increases and decreases in emissions with DGDME addition. − However, DGDME is also potentially teratogenic, and thus, its potential use as an additive needs more extensive toxicological testing.…”

“…The oxygen atoms in the smaller DGDME molecule are more dispersed which may further help combustion, whereas the FAME oxygen atoms are concentrated at one end of the molecule with a long carbon chain at the other. , Usage of this fuel additive has had benefits on diesel exhaust components, with an increasing percentage of DGDME being added to the fuel resulting in increasing reductions in PM . The trend in NOx emissions is more contradictory, with studies finding both increases and decreases in emissions with DGDME addition. − However, DGDME is also potentially teratogenic, and thus, its potential use as an additive needs more extensive toxicological testing. The toxicity of the exhaust generated by this additive has yet to be tested using primary human airway cells, let alone ones grown at the air-liquid interface (ALI), to best model the most likely route of exposure, through the lungs.…”

Effect of Exhaust Gas Recirculation and Isobutanol Additive on Biodiesel Fuelled Diesel Engine for the Reduction of NOx Emissions

“…Cetane improver with oxygenate such as glycol ether reduces particulate, hydro carbon (HC), and carbon monoxide (CO) emissions [10]. Ethanol-diesel blends with EHN as additive increase BTE and reduce significantly the emissions like CO, HC, smoke, and particulates in common rail direct injection (CRDI) diesel engine and decrease cylinder pressure, ignition delay, the maximum rate of pressure rise, and the combustion noise [11]. Ethanol-diesel blends with cetane improver with advanced fuel injection angle show a large decrease in exhaust smoke concentration and a small decrease in exhaust NO x concentration [12].…”