Investigation of hydrogen addition on the combustion, performance, and emission characteristics of a heavy-duty engine fueled with diesel/natural gas

Luo, Jianbin; Liu, Zhonghang; Wang, Jie; Xu, Hongxiang; Tie, Yuanhao; Yang, Dayong; Zhang, Zhiqing; Zhang, Chengtao; Wang, Haijiao

doi:10.1016/j.energy.2022.125082

Cited by 37 publications

(4 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To maintain a constant power density (since the same energy output is required despite varying the fuel mixture), it is necessary to increase the volumetric flow rate of hydrogen and reduce that of methane, as shown in the last column (volumetric flow rate ratio). Figure 2 summarises the previous research stages, which served as basis for the present work (1-2) [17], together with the research steps covered in the present study (3)(4) and the future steps that are expected to be taken (5). Thus, in order to achieve the desired energy density value at 14 MW/m 2 at λ, the present burner geometry was scaled, simulated and validated using pure hydrogen as described in our previous work [17].…”

Section: Objectives and Methodologymentioning

confidence: 99%

“…Among others, green hydrogen has become a promising alternative to conventional fossil fuels to reduce the overall emissions in different sectors [4,5,6,7]. It can be generated through water electrolysis and other renewable methods, using the energy excess in low demand periods and storing it to be afterwards used in different applications, acting as an energy vector.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of H2/CH4 blends on the flexibility of micromix burners applied to industrial combustion systems

López-Ruiz

Alava²,

Ilzarbe

2023

Energy

View full text Add to dashboard Cite

Section: Objectives and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of H2/CH4 blends on the flexibility of micromix burners applied to industrial combustion systems

López-Ruiz

Alava²,

Ilzarbe

2023

Energy

View full text Add to dashboard Cite

“…In this paper, BBR, load, and EGR are used as independent variables and BTE, BSFC, NO x emissions, and CO emissions are used as dependent variables to obtain the optimal parameters for multiple responses and to achieve the objectives of maximizing BTE and minimizing BSFC, NO x emissions, and CO emissions (Luo et al, 2022;Ye et al, 2023).…”

Section: Multi-objective Optimizationmentioning

confidence: 99%

The combustion and emission improvements for diesel–biodiesel hybrid engines based on response surface methodology

Zhong

Zhang

et al. 2023

Front. Energy Res.

View full text Add to dashboard Cite

With the rapid technological progress of society and increasingly stringent environmental regulations, further reduction of emissions has become an important issue for environmental protection. This study developed a response surface model with the biodiesel blending ratio (BBR), load, and exhaust gas recirculation (EGR) as independent variables and brake thermal efficiency (BTE), brake specific fuel consumption (BSFC), and NOx, and CO emission rates as dependent variables. Simulations were performed and calculated. The results of the response surface approach with the objectives of maximizing the BTE of the engine and minimizing BSFC, NOx emissions, and CO emissions show that when the BBR is 20%, the EGR rate is 15%, and the engine load is 74.52%, pollutant emissions are significantly reduced while the engine power’s performance is maximized.

show abstract

“…The results showed that when the hydrogen replacement rate was 20%, the in-cylinder pressure increased by 7.7%. Jianbin Luo et al [22] found that with the addition of hydrogen, the heat release rate of the diesel engine increased, the flame propagation speed accelerated, the combustion duration shortened, and the pressure and temperature in the cylinder increased. Juknelevicius et al [23] carried out experimental research on hydrogen blending in diesel engines.…”

Section: Introductionmentioning

confidence: 99%

Study on the Combustion Mechanism of Diesel/Hydrogen Dual Fuel and the Influence of Pilot Injection and Main Injection

Dong

Liu

et al. 2023

Processes

View full text Add to dashboard Cite

Hydrogen is a clean and renewable alternative fuel. In this paper, the combustion mechanism of diesel/hydrogen dual fuel is constructed and verified. The mechanism is combined with three-dimensional numerical simulation to study the effects of pilot injection and main injection on the combustion and emissions of a diesel/hydrogen dual fuel engine. The mechanism uses a 70% mole fraction of n-decane and 30% mole fraction of α-methylnaphthalene as diesel substitutes, and it combines n-decane, α-methylnaphthalene, NOX, PAH, soot and H2/C1-C3 sub-mechanisms to form a diesel/hydrogen dual fuel combustion mechanism. The mechanism was verified by chemical kinetics, including the ignition delay time, JSR (Jet Stirred Reactor) oxidation and laminar flame speed, and then, it was verified by computational fluid dynamics. The results show that the simulated values are in good agreement with the experimental values of cylinder pressure, heat release rate and emissions data. The mechanism can well predict the combustion and emissions of a diesel/hydrogen dual fuel engine. Compared with single injection, the peak heat release rate, peak cylinder pressure and MPIR (Maximum Pressure Rise Rate) increase with the increase in pilot mass percent from 5% to 20%, which makes the phase of CA10 and CA50 advance and reduces CO emissions, but NOX emissions increase. With the advance of pilot injection timing from 10° CA BTDC to 30° CA BTDC, the peak cylinder pressure increases, the peak heat release rate decreases, CA10 and CA50 advance, CO emissions decrease, NOX emissions increase and NOX emissions peak at 30° CA BTDC. When the pilot injection timing is further advanced from 30° CA BTDC to 50° CA BTDC, the peak cylinder pressure decreases, the peak heat release rate increases, CA10 and CA50 are delayed, CO and NOX emissions are reduced, and NOX emissions at 50° CA BTDC are lower than those at 10° CA BTDC. With the advance of main injection timing from 0° CA BTDC to 8° CA BTDC, CO emissions decrease, NOX emissions increase, the peak cylinder pressure increases, the peak heat release rate decreases slightly first and then increases, and the peak cylinder pressure and peak heat release rate corresponding to the overall phase shift forward. When the main injection timing is advanced to 6° CA BTDC, MPIR is 1.3 MPa/° CA, exceeding the MPIR limit of diesel engine 1.2 MPa/° CA.

show abstract

Investigation of hydrogen addition on the combustion, performance, and emission characteristics of a heavy-duty engine fueled with diesel/natural gas

Cited by 37 publications

References 55 publications

Impact of H2/CH4 blends on the flexibility of micromix burners applied to industrial combustion systems

Impact of H2/CH4 blends on the flexibility of micromix burners applied to industrial combustion systems

The combustion and emission improvements for diesel–biodiesel hybrid engines based on response surface methodology

Study on the Combustion Mechanism of Diesel/Hydrogen Dual Fuel and the Influence of Pilot Injection and Main Injection

Contact Info

Product

Resources

About