Effects of advancing injection timing on the engine performances and emissions of a diesel engine with 35% water in diesel emulsion fuel

Abstract

Replacement of diesel fuel with emulsion fuel is one way to overcome exhaust emissions from combustion, especially smoke emissions and increases combustion efficiency. This study used an emulsion with a mixture of 35% water and 65% diesel. The study used a Diamond DI 800 diesel engine by varying injection times by 13°BTDC - 19°BTDC intervals of 2°BTDC with loads of 1000 W (low load), 2500W (med load), and 4000 W (high load). The engine rotation was kept constant 1500 rpm. The results showed that despite a decrease in exhaust emissions and an increase in combustion efficiency, the value of thermal efficiency increased to 55.3% compared to standard diesel fuel at 17°BTDC. Smoke emissions decreased by 2.53%. it was accompanied by an increase in fuel consumption, under standard conditions fuel consumption increased by 15%, but by advancing injection time, fuel consumption decreased to 5,47%, low engine torque and power decreased by 3.17% with max output 3,056 HP.Replacement of diesel fuel with emulsion fuel is one way to overcome exhaust emissions from combustion, especially smoke emissions and increases combustion efficiency. This study used an emulsion with a mixture of 35% water and 65% diesel. The study used a Diamond DI 800 diesel engine by varying injection times by 13°BTDC - 19°BTDC intervals of 2°BTDC with loads of 1000 W (low load), 2500W (med load), and 4000 W (high load). The engine rotation was kept constant 1500 rpm. The results showed that despite a decrease in exhaust emissions and an increase in combustion efficiency, the value of thermal efficiency increased to 55.3% compared to standard diesel fuel at 17°BTDC. Smoke emissions decreased by 2.53%. it was accompanied by an increase in fuel consumption, under standard conditions fuel consumption increased by 15%, but by advancing injection time, fuel consumption decreased to 5,47%, low engine torque and power decreased by 3.17% with max output 3,056 HP.