Modeling and analysis of diesel engine with addition of hydrogen-hydrogen-oxygen gas

Abstract

The brown gas or hydrogen-hydrogen-oxygen gas is considered as a hydrogen fuel with oxygen present in it. The effect of hydrogen-hydrogen-oxygen gas induction in a direct injection diesel engine using GT-POWER software is discussed in relation with the rate of pressure rise and heat release rate. The engine is modeled in GT-POWER environment. The single zone combustion model has been adapted with Woshini heat transfer model. In this model the effect of induction of hydrogen-hydrogen-oxygen gas has been incorporated and analyzed for 1, 3, and 5% of hydrogen-hydrogen-oxygen gas in volume basis. The injection rate is modified for accommodating the hydrogen-hydrogen-oxygen gas in the model. The results have given the promise of higher rate of heat release with shorter combustion duration. Higher levels of hydrogen-hydrogen-oxygen gas have shown the advanced start of combustion as well as reduce the combustion duration.

Aspects of combustion in diesel engine at hydrogen use-a theoretical approach

“…The angle of peak pressure is 377°CA for diesel fuel use, 373°CA for XE=0.25, 372°CA for XE=0.30 which represents an acceleration of rapid phase combustion at hydrogen use. Similar results and tendency variations for in-cylinder pressure were obtained by other researchers [3,5,6,7,8,9,10,11]. The burning speed and LHV of H2 superior to diesel fuel assures to the increase of the HRR with 6%, figure 2, the first HRR peak being closer to TDC due to the increase of the share of rapid combustion phase.…”

“…Hydrogen combustion favours the rise of the in-cylinder pressure, the maximum value of the pressure per cycle occurs farther from Top Dead Centre (TDC) versus classic fuelling. A similar tendency appears for rate of heat release, HRR, the peak of heat release rate being increased once with the rise of the hydrogen content and the angle of maximum HRR appears closer to TDC, the reduction of the combustion duration being shown [6]. Molina [7] shows that higher percentages of the hydrogen assure the acceleration of the combustion flame speed for all range of air-to-fuel ratio, the peak pressure and the HRR being increased.…”

“…Maghbouli [5] shows that hydrogen use as gaseous fuel in the engine admission in percent of 1% to 7% volume, assures the rise of pressure and temperature, for 7% of hydrogen, the rate of the pressure rise and the rate of the heat release being accelerated, knocking combustion being favoured. Ragupathy [6] uses a basic hydrogen fuel and observe the decrease of the injection duration decrease and the heat release during combustion is higher. Hydrogen combustion favours the rise of the in-cylinder pressure, the maximum value of the pressure per cycle occurs farther from Top Dead Centre (TDC) versus classic fuelling.…”

Efficient Use of Oxy-hydrogen Gas (HHO) in Vehicle Engines

“…Electric power (amperage and voltage), metal plates (charged terminals and neutrals); number, area and material, electrolyte type and percentage; these are main components of HHO generator responsible for the electrochemical ionization reactions and splitting the bonds in H2O molecule to form HHO gas [16,17]. All researchers in the field of hybrid vehicle engines with HHO gas claimed lower fuel consumption, higher engine performance and lower gas emission than individual gasoline or diesel engines [18][19][20][21][22][23][24][25][26][27].…”

Impact of addition oxy-hydrogen gas (HHO) on vehicle engines performance and emissions

“…All researchers in the field of hybrid vehicle engines with HHO gas claimed lower fuel consumption, higher engine performance and lower gas emission than individual gasoline or diesel engines [18][19][20][21][22][23][24][25][26][27].…”