Experimental Investigations on Enhancement of DME Energy Shares in Compression-Ignition Engine Under Dual Fuel Mode Using Reduced Compression Ratio

Authors : Shreemohan SİNHA, Anilkumar SHERE, K A SUBRAMANİAN

Pages : 83-97

Doi:10.30939/ijastech..972029

View : 14 | Download : 8

Publication Date : 2022-03-31

Article Type : Research Paper

Abstract :The effects of the compression ratio insert ignore into journalissuearticles values(CR);, which was reduced from base insert ignore into journalissuearticles values(19:1); to insert ignore into journalissuearticles values(17:1);, on the enhancement of Dimethyl Ether Energy Share insert ignore into journalissuearticles values(DME ES); and emissions reduction in a 5.5 kW DICI insert ignore into journalissuearticles values(direct injection compression ignition); engine are studied. The experimental tests were conducted on the engine with DME as main fuel and diesel as pilot fuel at 13 Nm torque and speed of 2200 rpm condition under dual fuel mode insert ignore into journalissuearticles values(DME-diesel);. The maximum DME energy share insert ignore into journalissuearticles values(DME ES); enhanced drastically from 44% with base CR to 53% with the reduced CR. Smoke emission decreased to nearly zero levels with both CRs insert ignore into journalissuearticles values(19:1 and 17:1);. CO and HC emissions significantly decreased with 53% of DME ES with reduced CR. NOx emission decreased drastically with the reduced CR insert ignore into journalissuearticles values(17:1);. However, brake thermal efficiency is marginally droped with the reduced compression ratio. The combustion characteristics are discussed in detail.
Keywords : Compression ratio, Emissions, Diesel Engine, DME Energy Share, Dual Fuel Mode