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A research on the NOx reduction potential in diesel engine emissions injecting a 50% water-bioethanol blend in the engine intake system was carried out. Experiments were conducted on the test bench equipped with an Opel 16 DA four-cylinder 1.6-litre diesel engine and a two-tank system to run the engine on rapeseed oil. Toxic emissions were estimated using AVL SESAM FTIR multicomponent exhaust gas analytical system; the fuel consumption was measured using Kern 440-49A electronic weighing system. Three repetitions at the 1500 min-1 and 2500 min-1 engine crankshaft rotational speeds were performed; duration of each repetition - 120 seconds. Investigation results showed that such approach can reduce the nitrogen oxide content in exhaust gases by 32%, without significantly affecting other toxic emissions, at the same time reducing fuel consumption by 16-21%. Both rapeseed oil fuel and additive WE50 were derived from renewable resources, which plays an important role in elimination of climate changes.

proceedings of the latvia university of agriculture

Rapšu eļļas degvielas patēriņa un izmešu emisijas pētījumi, iesmidzinot ūdens–bioetanola maisījumu motora ieplūdes sistēmā / The Rapeseed Oil Fuel Consumption and Exhaust Emissions Research Injecting a Water–Bioethanol Blend in the Engine Intake System