An Experimental Study of Operating Range, Combustion and Emission Characteristics in an RCCI Engine Fueled with Iso-Propanol/n-Heptane
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Premixed Ratio Effects
3.2. Intake Air Temperature Effects
4. Conclusions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Nomenclature
aTDC | After Top Dead Center |
BSFC | Brake-Specific Fuel Consumption |
bTDC | Before Top Dead Center |
CA | Crank Angle |
CA50 | Crank Angle Corresponding to 50% of the Total Heat Release |
CFD | Computational Fluid Dynamics |
CI | Compression Ignition |
CNG | Compressed Natural Gas |
CO | Carbon Monoxides |
COVIMEP | Coefficient of Variation of IMEP |
CR | Compression Ratio |
DI | Direct Injection |
DPF | Diesel Particulate Filter |
EGR | Exhaust Gas Recirculation |
HC | Hydrocarbon |
HCCI | Homogeneous Charged Compression Ignition |
HRF | High-Reactivity Fuel |
HRR | Heat Release Rate |
IAT | Intake Air Temperature |
ICEs | Internal Combustion Engines |
IHR | Integrated Heat Release |
IMEP | Indicated Mean Effective Pressure |
ITE | Indicated Thermal Efficiency |
LTC | Low-Temperature Combustion |
LHV | Low Heat Value |
LRF | Low-Reactivity Fuel |
MPRR | Maximum Pressure Rise Rate |
NOx | Nitrogen Oxides |
PCCI | Premixed Charge Compression Ignition |
PFI | Port Fuel Injection |
PR | Premixed Ratio |
RCCI | Reactivity-Controlled Compression Ignition |
SCR | Selective Catalytic Reduction |
SI | Spark Ignition |
SOC | Start of Combustion |
SOI | Start of Injection |
UHC | Unburned Hydrocarbons |
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Engine | Compression Ignition (4-Stroke, Water-Cooled) |
---|---|
Combustion strategy | RCCI |
Stroke × bore | 90 mm × 85 mm |
Number of cylinders | 1 |
Compression ratio | 17.5:1 |
Cylinder volume | 510 cm3 |
Length of connecting rod | 118 mm |
Power | 12 HP |
Max. engine speed | 3000 rpm |
Max. torque | 32.8 Nm @1800 rpm |
Oil consumption | 8 g/h |
Oil reservoir capacity | 1.75 lt |
Fuel | Octane Number | Density (kg/m3) | Boiling Point (°C) | Molar Mass (g/mol) | Lower Heating Value (kJ/kg) |
---|---|---|---|---|---|
Iso-propanol C3H8O | 107 | 809 | 82 | 60.10 | 30447 |
n-heptane C7H16 | - | 679.5 | 98 | 100.16 | 44560 |
Measurement Range | Accuracy | |
---|---|---|
Lambda | 0.5 to 9.999 | 0.001 |
NO (ppm vol) | 0 to 5000 | 1 |
HC (ppm vol) | 0 to 9999 | 1 |
CO (% vol) | 0 to 10 | 0.001 |
CO2 (% vol) | 0–18 | 0.01 |
O2 (% vol) | 0 to 22 | 0.01 |
Parameters | Case-1 | Case-2 |
---|---|---|
Combustion mode | RCCI | RCCI |
Fuel | PR25-PR50-PR75 | PR50 |
Intake air temperature (°C) | 50 | 30–50–70 |
Engine speed (rpm) | 1000–2500 | 1000–2500 |
Lambda | 1.40–4.00 | 1.40–4.00 |
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Halis, S. An Experimental Study of Operating Range, Combustion and Emission Characteristics in an RCCI Engine Fueled with Iso-Propanol/n-Heptane. Sustainability 2023, 15, 10897. https://doi.org/10.3390/su151410897
Halis S. An Experimental Study of Operating Range, Combustion and Emission Characteristics in an RCCI Engine Fueled with Iso-Propanol/n-Heptane. Sustainability. 2023; 15(14):10897. https://doi.org/10.3390/su151410897
Chicago/Turabian StyleHalis, Serdar. 2023. "An Experimental Study of Operating Range, Combustion and Emission Characteristics in an RCCI Engine Fueled with Iso-Propanol/n-Heptane" Sustainability 15, no. 14: 10897. https://doi.org/10.3390/su151410897