An Experimental Study of the Addition of Air Mass Flow Rate Using a 30% Emulsion-Fueled Diesel Engine at High Load

Abstract

The purpose of this study was to examine the addition of air mass flow rate into the combustion chamber using E30 emulsion fuel (Water 70% + Dex 30% + 2% surfactant tween 80 + span 80 ) on a Diamond DI 800 stationary diesel engine with an engine rotation of 1500 rpm. Characteristics evaluated using Combustion Analyze, and emissions measured with a Gas Analyzer. The results showed the addition of air mass flow rate affected engine performance and emissions with the engine power observed to have decreased by 0.016% while SFC and thermal efficiency increased by 2,077% and 33,053% respectively compared to diesel fuel. Moreover, the BMEP and exhaust temperature also decreased with the most optimum in BMEP found to be 0.02% and exhaust temperature at 285°C while diesel has 358°C. The analysis of the combustion process for E30 emulsion fuel with variations in the air mass flow rate added showed the peak cylinder pressure at high loads was at 0.018 kg/s at a pressure of 5.86 bar. Meanwhile, the optimum heat release rate at high loads was obtained at a variation of 0.013 kg/s. This, therefore, means adding air mass flow rate to the E30 emulsion fuel has the ability to improve performance and reduce engine emissions.

Engine Performances of Lean Iso-Octane Mixtures in a Glow Plug Heated Sub-Chamber SI Engine

“…show the brake torque and BMEP, respectively. The brake torque and BMEP have a similar trend since they are proportional to one another, as shown in Equation (1). The brake torque and BMEP decreased with increased excess air ratio for all engine speeds and glow plug voltages investigated.…”

“…The brake torque was measured at a resolution of 200 ms using an eddy current dynamometer connected to an electromagnetic clutch. BMEP was calculated using the obtained brake torque by employing Equation (1), where 𝐵𝑀𝐸𝑃 is the brake mean effective pressure, 𝑛 𝑟 is the number of revolutions per cycle, which is two for four-stroke engines, 𝑇 is the brake torque, and 𝑉 𝑑 is the displacement volume.…”

“…Most of the energy currently produced is derived from burning hydrocarbon fossil fuels that generate carbon by-products such as carbon dioxide (CO2). These carbon by-products are also categorized as greenhouse gases that are negatively affecting the environment and intensify the effect of climate change [1] [2]. With concern towards the carbon emissions and climate change due to the overreliance on fossil fuels, more sustainable fuels that have low to zerocarbon net emissions have been proposed as alternative sources of energy [3] [4].…”

Combustion and Emission Characteristics of CNG-Diesel Dual Fuel Engine with Variation of Air Fuel Ratio

“…Ф = 𝐴/𝐹 𝑠𝑡𝑜𝑖𝑐 𝐴/𝐹 𝑎𝑐𝑡𝑢𝑎𝑙 (10) Finally, the CNG substitution is how much diesel fuel is replaced by CNG fuel. The equation used to calculate CNG substitution is presented by Eq.…”

“…The diesel engine was one of the internal combustion engine (ICE) that produce very high nitrogen oxide (NOx) and particulate matter (PM) emissions [5]- [10]. Various efforts have been made by automotive researchers to reduce NOx and PM emissions on diesel engines, such as exhaust gas recirculation (EGR) [11], [12], direct water injection [13] and dual fuel systems [14]- [18].…”