The Effects of λ and ∊ on Engine Performance and Exhaust Emissions Using Ethanol–unleaded Gasoline Blends in an SI Engine

2010 ◽  
Vol 33 (1) ◽  
pp. 49-56 ◽  
Author(s):  
H. Bayindir ◽  
H. S. Yücesu ◽  
H. Aydin
Keyword(s):  
Engine Performance ◽  
Exhaust Emissions ◽  
Si Engine ◽  
Unleaded Gasoline

scholarly journals Review of Performance and Emmissions Characteristics of Bio-Additive Fuel on SI Engine Fuelled by Biopetrol

2015 ◽  
Vol 773-774 ◽  
pp. 430-434
Author(s):  
Azizul Mokhtar ◽  
Nazrul Atan ◽  
Najib Rahman ◽  
Amir Khalid
Keyword(s):  
Fuel Economy ◽  
Fossil Fuels ◽  
Review Paper ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Spark Ignition Engine ◽  
Si Engine ◽  
New Approach ◽  
Performance And Emission ◽  
Performance And Emissions

Bio-additive is biodegradable and produces less air pollution thus significant for replacing the limited fossil fuels and reducing threats to the environment from exhaust emissions and global warming. Instead, the bio-additives can remarkably improve the fuel economy SI engine while operating on all kinds of fuel. Some of the bio-additive has the ability to reduce the total CO2 emission from internal petrol engine. This review paper focuses to determine a new approach in potential of bio-additives blends operating with bio-petrol on performance and emissions of spark ignition engine. It is shown that the variant in bio-additives blending ratio and engine operational condition are reduced engine-out emissions and increased efficiency. It seems that the bio-additives can increase the maximum cylinder combustion pressure, improve exhaust emissions and largely reduce the friction coefficient. The review concludes that the additives usage in bio-petrol is inseparable for the better engine performance and emission control and further research is needed to develop bio-petrol specific additives.

scholarly journals Experimental Comparative Study on Performance and Emissions of E85 Adopting Different Injection Approaches in a Turbocharged PFI SI Engine

Energies ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1555 ◽  
Author(s):  
Cinzia Tornatore ◽  
Luca Marchitto ◽  
Maria Antonietta Costagliola ◽  
Gerardo Valentino
Keyword(s):  
Fuel Injection ◽  
Reference Conditions ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Intake Manifold ◽  
Si Engine ◽  
Spark Timing ◽  
Performance And Emissions ◽  
Ethanol Blends ◽  
Cylinder Port

This study examines the effects of ethanol and gasoline injection mode on the combustion performance and exhaust emissions of a twin cylinder port fuel injection (PFI) spark ignition (SI) engine. Generally, when using gasoline–ethanol blends, alcohol and gasoline are externally mixed with a specified blending ratio. In this activity, ethanol and gasoline were supplied into the intake manifold into two different ways: through two separated low pressure fuel injection systems (Dual-Fuel, DF) and in a blend (mix). The ratio between ethanol and gasoline was fixed at 0.85 by volume (E85). The initial reference conditions were set running the engine with full gasoline at the knock limited spark advance boundary, according to the standard engine calibration. Then E85 was injected and a spark timing sweep was carried out at rich, stoichiometric, and lean conditions. Engine performance and gaseous and particle exhaust emissions were measured. Adding ethanol could remove over-fueling with an increase in thermal efficiency without engine load penalties. Both ethanol and charge leaning resulted in a lowering of CO, HC, and PN emissions. DF injection promoted a faster evaporation of gasoline than in blend, shortening the combustion duration with a slight increase in THC and PN emissions compared to the mix mode.

Experimental Analysis of O2 Addition on Engine Performance and Exhaust Emissions from a Small Displacement SI Engine

2016 ◽  
Author(s):  
Francesco Catapano ◽  
Silvana Di Iorio ◽  
Ludovica Luise ◽  
Paolo Sementa ◽  
Bianca Maria Vaglieco
Keyword(s):  
Experimental Analysis ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Small Displacement ◽  
Si Engine

Effect of unleaded gasoline blended with biofuels on gasoline injector wear and exhaust emissions

2017 ◽  
Vol 69 (2) ◽  
pp. 208-214 ◽  
Author(s):  
De-Xing Peng
Keyword(s):  
Fossil Fuels ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Fuel Additive ◽  
Unleaded Gasoline ◽  
High Oxygen Content ◽  
Complete Combustion ◽  
Content Type ◽  
Gasoline Engines ◽  
Blended Fuels

Purpose To prolong engine life and reduce exhaust pollution caused by gasoline engines, the aim of this paper was to compare the lubrication properties of biofuel (ethanol) blends and pure unleaded gasoline. Design/methodology/approach Biofuels with a concentration of 0, 1, 2, 5 and 10 per cent were added to unleaded gasoline to form ethanol-blended fuels named E0, E1, E2, E5 and E10. Next, the ethanol-blended fuels and unleaded gasoline were used to power engines to facilitate comparisons between the pollution created from exhaust emissions. Findings Using ethanol as a fuel additive in pure unleaded gasoline improves engine performance and reduces exhaust emissions. Because bioethanol does not contain lead but contains low aromatic and high oxygen content, it induces more complete combustion compared with conventional unleaded gasoline. Originality/value Using biofuels as auxiliary fuel reduces environmental pollution, strengthens local agricultural economy, creates employment opportunities and reduces demand for fossil fuels.

Effect of Octane Number on Performance and Exhaust Emissions of an SI Engine

2020 ◽  
Vol 38 (4A) ◽  
pp. 574-585
Author(s):  
Noor H. Athafah ◽  
Adei M. Salih
Keyword(s):  
Octane Number ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Brake Specific Fuel Consumption ◽  
Spark Ignition Engines ◽  
Si Engine ◽  
Brake Thermal Efficiency ◽  
The World ◽  
The Impact ◽  
Stroke Engine

Spark ignition engines are very popular engines that they are running millions of vehicles all over the world. This engine emits many harmful pollutants, such as CO, UHC, and NOX. In this paper, the impact of gasoline octane number on the engine performance and exhaust emissions was studied. In the tests, four-cylinder, four-stroke engine, and two variable octane numbers (RON83 and 94.5) were used. The engine was run at different engine speeds and loads. The results from the experimental study indicated that the brake specific fuel consumption (bsfc) of RON94.5 was higher than RON83 by 13.93%, while the brake thermal efficiency (ƞbth) was higher for RON83 compared to RON94.5 by 12.31%. The emitted emissions for the tested fuels were high when RON83 was used compared to RON94.5 by 65.52%, 49.11%, and 57.33% for CO, UHC, and NOX, respectively.

Effects of Blending MTBE With Unleaded Gasoline on Exhaust Emissions of SI Engine

2000 ◽  
Vol 122 (4) ◽  
pp. 239-247 ◽  
Author(s):  
Abdulghani A. Al-Farayedhi ◽  
A. M. Al-Dawood ◽  
P. Gandhidasan
Keyword(s):  
Exhaust Emissions ◽  
Operating Conditions ◽  
Current Paper ◽  
Nox Emissions ◽  
Si Engine ◽  
Unleaded Gasoline ◽  
Hc Emissions

The current paper examines the effects of using MTBE as a replacement of lead additives in gasoline on exhaust emissions of a typical SI engine. The MTBE was blended with a base unleaded fuel in three ratios (10, 15, and 20 vol. percent). The emissions of CO, HC, and NOx were measured at a variety of engine operating conditions using an engine dynamometer setup. The results of the MTBE blends were compared to those of the base fuel and of a leaded fuel prepared by adding TEL to the base. With respect to the base fuel, the addition of MTBE decreased the CO emissions, decreased the HC emissions at most operating conditions, but generally increased the NOx emissions. The emissions results for the leaded fuel were comparable to those of the base fuel. [S0195-0738(00)00103-5]

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