scholarly journals Thermal cycle of SI engine modeling with initial swirl proces into consideration

2008 ◽  
Vol 132 (1) ◽  
pp. 56-61
Author(s):  
Wojciech TUTAK
Keyword(s):  
Numerical Modelling ◽  
Thermal Cycle ◽  
Piston Engine ◽  
Si Engine ◽  
Engine Modeling ◽  
Engine Cylinder ◽  
Initial Charge ◽  
Experimental Researches

Results of numerical modelling the initial charge swirl in piston engine cylinder and the influence of swirl profile on engine thermal cycle parameters have been presented in the paper. The shape of initial swirl profile of modelled engine was determined on the basis of the experimental researches. It was taken into consideration because the proper level of turbulence before the initiation of combustion is very important for engine work. The research was conducted using KIVA-3V software.

Thermodynamic Analysis of a Multi-Fueled Single Cylinder SI Engine

2011 ◽  
Author(s):  
M. Z. Haq ◽  
M. R. Mohiuddin
Keyword(s):  
Thermodynamic Analysis ◽  
Chemical Properties ◽  
Second Law Of Thermodynamics ◽  
Second Law ◽  
Si Engine ◽  
Gaseous Species ◽  
Single Cylinder ◽  
Engine Cylinder ◽  
Si Engines

The paper presents a thermodynamic analysis of a single cylinder four-stroke spark-ignition (SI) engine fuelled by four fuels namely iso-octane, methane, methanol and hydrogen. In SI engines, due to phenomena like ignition delay and finite flame speed manifested by the fuels, the heat addition process is not instantaneous, and hence ‘Weibe function’ is used to address the realistic heat release scenario of the engine. Empirical correlations are used to predict the heat loss from the engine cylinder. Physical states and chemical properties of gaseous species present inside the cylinder are determined using first and second law of thermodynamics, chemical kinetics, JANAF thermodynamic data-base and NASA polynomials. The model is implemented in FORTRAN 95 using standard numerical routines and some simulation results are validated against data available in literature. The second law of thermodynamics is applied to estimate the change of exergy i.e. the work potential or quality of the in-cylinder mixture undergoing various phases to complete the cycle. Results indicate that, around 4 to 24% of exergy initially possessed by the in-cylinder mixture is reduced during combustion and about 26 to 42% is left unused and exhausted to the atmosphere.

scholarly journals Investigation of mechanical failure cause of an aircraft piston engine cylinder head

Tehnika ◽  
2015 ◽  
Vol 70 (1) ◽  
pp. 71-80 ◽  
Author(s):  
Branimir B. Krstić ◽  
Boško P. Rašuo ◽  
Dragan R. Trifković ◽  
Igor Z. Radisavljević ◽  
Zoran M. Rajić ◽  
...  
Keyword(s):  
Cylinder Head ◽  
Mechanical Failure ◽  
Piston Engine ◽  
Engine Cylinder

scholarly journals Utilization of Multi-Zone Model Results in SI Engine Modeling

2012 ◽  
Vol 10 (2) ◽  
pp. 23-30
Author(s):  
Zdeněk Žák ◽  
Jiří Hvězda ◽  
Miloslav Emrich ◽  
Jan Macek ◽  
Libor Červenka
Keyword(s):  
Zone Model ◽  
Si Engine ◽  
Engine Modeling

Shrnutí Příspěvek se zabývá využitím výsledků vícezónových modelů v simulacích oběhů čtyřtaktních zážehových motorů. Popsány jsou základní principy vícezónových modelů. Inverzní forma modelu byla využita k získání požadovaných výstupů, založených na dostupných geometrických a experimentálních datech. V příspěvku je nastíněn potenciál vícezónových modelů propojených s parametrickým generátorem geometrie spalovacího prostoru. Výsledky simulací oběhů zážehového motoru získané pomocí detailního 1-D modelu, který využívá výsledky zónových modelů, jsou porovnávány s experimentálními daty.

SI Engine Modeling Using Neural Networks

1998 ◽  
Author(s):  
M. Ayeb ◽  
D. Lichtenthäler ◽  
T. Winsel ◽  
H. J. Theuerkauf
Keyword(s):  
Neural Networks ◽  
Si Engine ◽  
Engine Modeling

Tumble and Swirl Quantification within a Motored Four-Valve SI Engine Cylinder Based on 3-D LDV Measurements

1997 ◽  
Author(s):  
Kasser Jaffri ◽  
Hans G. Hascher ◽  
Mark Novak ◽  
Keunchul Lee ◽  
Harold Schock ◽  
...  
Keyword(s):  
Si Engine ◽  
Engine Cylinder

Liquid Gasoline Behavior in the Engine Cylinder of a SI Engine

1994 ◽  
Author(s):  
Younggy Shin ◽  
Wai K. Cheng ◽  
John B. Heywood
Keyword(s):  
Si Engine ◽  
Engine Cylinder

scholarly journals Knock Suppression of a Spark-Ignition Aviation Piston Engine Fuelled with Kerosene

2020 ◽  
Author(s):  
Enhua Wang ◽  
Chenyao Wang ◽  
Fujun Zhang ◽  
Huasheng Cui ◽  
Chuncun Yu ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Water Injection ◽  
Combustion Process ◽  
Three Dimensional ◽  
Spark Ignition ◽  
Flash Point ◽  
Spark Ignition Engine ◽  
Piston Engine ◽  
Si Engine ◽  
Aviation Engines

Spark-ignition (SI) engine has a high power density, making it suitable for unmanned aerial vehicles. Normally, gasoline fuel with a high octane number (ON) is used for a spark-ignition engine. However, gasoline fuel is easy to be evaporated and has a low flash point which is unsafe for aviation engines. Kerosene with a high flash point is safer than gasoline. In this chapter, the combustion characteristics of kerosene for a spark-ignition aviation piston engine are analyzed. A three-dimensional (3D) model is setup, and the combustion process of the engine fuelled with kerosene is simulated. Later, the knock limit extension by water injection is evaluated experimentally. The results indicate that water injection can suppress the knock of SI engine with kerosene in some extent and the output power can be improved significantly.

Sign in / Sign up

Export Citation Format

Share Document