Measurement of Vapor Pressures and Enthalpies of Vaporization of Gasoline and Ethanol Blends and Their Effects on Mixture Preparation in an SI Engine

2008 ◽  
Vol 1 (1) ◽  
pp. 132-144 ◽  
Author(s):  
Kenneth Kar ◽  
Tristan Last ◽  
Clare Haywood ◽  
Robert Raine
Keyword(s):  
Vapor Pressures ◽  
Si Engine ◽  
Mixture Preparation ◽  
Ethanol Blends

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.

Measurement and Modeling on Wall Wetted Fuel Film Profile and Mixture Preparation in Intake Port of SI Engine

1999 ◽  
Author(s):  
Jiro Senda ◽  
Masanori Ohnishi ◽  
Tomohiro Takahashi ◽  
Hajime Fujimoto ◽  
Atsushi Utsunomiya ◽  
...  
Keyword(s):  
Intake Port ◽  
Si Engine ◽  
Fuel Film ◽  
Mixture Preparation ◽  
Film Profile

Investigation of Engine Performance and Emission Characteristics of Si Engine Fuelled with Ethanol Blends by Numerical Simulation

2014 ◽  
Vol 1016 ◽  
pp. 597-601
Author(s):  
Ceyla Ozgur ◽  
Erdi Tosun ◽  
Tayfun Ozgur ◽  
Gökhan Tuccar ◽  
Kadi̇r Aydin
Keyword(s):  
Combustion Process ◽  
Engine Performance ◽  
Spark Ignition Engine ◽  
Emission Characteristics ◽  
Si Engine ◽  
Performance And Emission ◽  
Performance And Emissions ◽  
Ethanol Addition ◽  
Ethanol Blends ◽  
Engine Performance And Emissions

In this study the influences of ethanol addition to gasoline on an spark ignition engine performance and emissions were explored. AVL BOOST software was used to simulate the performance and emission characteristics of different ethanol-gasoline blends. The blended fuels contain 5%, 10% and 15% of ethanol by volume, and indicated as B95E5, B90E10, and B85E15, respectively. The results showed that ethanol addition to gasoline fuel improve combustion process, decrease CO emissions and reduce BSFC of the SI engine.

Mixture Preparation During Cranking in a Port-Injected 4-Valve SI Engine

1997 ◽  
Author(s):  
Michael H. Koenig ◽  
Rudolf H. Stanglmaier ◽  
Matthew J. Hall ◽  
Ronald D. Matthews
Keyword(s):  
Si Engine ◽  
Mixture Preparation
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