A technical survey on using oxyhydrogen with biodiesel/diesel blend for homogeneous charge compression ignition engine

Renewable energy should be used instead of fossil fuels owing to the negative impact of fossil fuels on both humans and the environment, as well as the toxic emissions of carbon dioxide, unburned hydrocarbons, and nitrogen oxide. Studies investigated the consideration of using alternative fuel that is renewable, sustainable, and eco-friendly, especially because of the huge demand for energy, the decline, and the environmental initiatives to decrease the usage of petroleum sources. The addition of oxyhydrogen [HHO] to biodiesel and diesel blends can enhance characteristics; however, there is a concern about raising nitrogen oxide levels, which can have negative impacts on human lives and the environment, contributing to the increase of chronic respiratory conditions, acid rain occurrences, and global warming. Hence, it has been proposed that these issues can potentially be resolved by employing a homogeneous charge compression ignition engine fueled by a mixture of oxyhydrogen gas and biodiesel/diesel fuel to reduce nitrogen oxide until it is negligible. Recent research efforts have discussed the combination of oxyhydrogen gas with biodiesel and diesel blends in an HCCI engine. These studies were performed to obtain the characteristics that result in an improvement in the values of performance parameters like brake thermal efficiency [BTE], brake specific fuel consumption [BSFC], exhaust gas temperature [EGT or Texh.], and volumetric efficiency [ηvol.]. Furthermore, combustion parameters that include peak cylinder pressure [PCP], heat release rate [HRR], mean gas temperature [MGT], ignition delay [ID], and combustion duration [CD] were observed. In addition, exhaust emissions parameters such as nitrogen oxide [NOx], carbon monoxide [CO], unburned hydrocarbon [UHC or HC], carbon dioxide [CO2], exhaust oxygen [EO] or oxygen rate [O2], and smoke opacity [soot] were measured

Exploring the Influence of Various Factors, Including Initial Temperatures, Equivalence Ratios, and Different Biodiesel/Diesel Blend Ratios, on Homogeneous Charge Compression Ignition (HCCI) Combustion

This paper discusses the impact of three study cases that change with different values: the first case is four initial temperature values [313, 323, 333, and 343 K], the second case is three equivalence ratios [0.2, 0.3, and 0.4], and the third case uses various concentrations of biodiesel and diesel mixes [D100, B20, B40, B60, B80, and B100]. The purpose is to use the Chemkin software program to determine the effectiveness of each case in the HCCI combustion process. The results included cylinder pressure, cylinder temperature, accumulated gas phase heat release, heat loss rate, UHC, and mole fractions of O2, CO, CO2, diesel [NC7H16] and biodiesel [C5H10O2]. the conclusion that biodiesel blends enhance the characteristics of the HCCI engine as compared to conventional diesel

Chemical Kinetic Investigation: Exploring the Impact of Various Concentrations of HHO Gas with a 40% Biodiesel/Diesel Blend on HCCI Combustion

This study uses the Chemkin software program to evaluate the effect of different quantities of oxyhydrogen gas [HHO] added to 40% biodiesel and diesel mix [B40], including B40, B40+5HHO, B40+10HHO, and B40+15HHO, on the HCCI combustion process\u27s efficiency. The information collected includes cylinder pressure, cylinder temperature, accumulated gas phase heat release, heat loss rate, UHC, and mole fractions of O2, CO, CO2, diesel [NC7H16], biodiesel [C5H10O2], and oxyhydrogen [H2O]. The finding is that, when compared to a blend of biodiesel and diesel, using oxyhydrogen in the biodiesel/diesel mix boosts the properties of the HCCI engine

The influence of using HHO with sunflower and soybean oil biodiesel/diesel blend on PCCI engine characteristics

This research studies the influence of various blends of sunflower and soybean oil biodiesel with diesel fuel on premixed charge compression engine characteristics, including performance and exhaust emissions, and also investigates the impact caused by oxyhydrogen gas addition on them. The experiments were carried out on a single cylinder PCCI engine which utilizing eight blends of the fuels. Conventional diesel, B20D80, B40D60, B60D40, B80D20, B40D60 + 5 LPM HHO, B40D60 + 10 LPM HHO, and B40D60 + 15 LPM HHO have been used to obtain performance and exhaust emissions characteristics. The hydrogen peroxide additive has introduced into the engine manifold while the diesel/biodiesel fuel blends have been injected directly into the engine cylinder. The results of the studies showed that adding a 40% biodiesel and 60% diesel blend to oxyhydrogen with flow rates of 15 LPM improved the performance characteristics as well as lower exhaust emissions characteristics when compared to the other seven blends. In contrast, conventional diesel had much higher exhaust emissions parameters