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Proceedings ArticleDOI

A Simulation Model for the Combustion Process of Natural Gas Engines with Pilot Diesel Fuel as an Ignition Source

About: The article was published on 2001-03-05. It has received 39 citations till now. The article focuses on the topics: Homogeneous charge compression ignition & Internal combustion engine.
Citations
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Journal ArticleDOI
TL;DR: In this paper, an experimental investigation of the characteristics of dual fuel operation when liquid diesel is partially replaced with natural gas under ambient intake temperature in a direct injection (DI) diesel engine is presented.

282 citations

Journal ArticleDOI
TL;DR: In this paper, a two-zone phenomenological model is employed and applied on a high-speed, pilot ignited, natural gas diesel engine located at the authors' laboratory, in order to examine the effect of these two parameters on the performance and emissions.

148 citations

Journal ArticleDOI
TL;DR: In this paper, a numerical investigation on the ignition of n-C7H16/H2 and n-c7H 16/CH4 fuel blends was performed using CHEMKIN 4.1 software.

81 citations

Journal ArticleDOI
01 Feb 2010-Energy
TL;DR: In this paper, the effect of increased air inlet temperature combined with increased pilot fuel quantity on performance and exhaust emissions of a PINGD engine was examined by applying a comprehensive two-zone phenomenological model on a high-speed, pilot ignited, natural gas diesel engine.

78 citations

Patent
23 Sep 2004
TL;DR: In this article, a method of controlling a direct injection internal combustion engine and predicting the behavior of a direct-injection internal combustion engines is presented, where an estimation of initial cylinder pressure, air flow and EGR flow is used to establish a system that provides engine behaviour by integrating an injection module, combustion module and engine control module.
Abstract: This disclosure teaches a method of controlling a direct injection internal combustion engine and predicting the behaviour of a direct injection internal combustion engine. An estimation of initial cylinder pressure, air flow and EGR flow (if applicable) is used to establish a system that provides engine behaviour by integrating an injection module, combustion module and engine control module to provide data indicative of engine behaviour such as brake torque and power, air flow, EGR flow, cylinder pressure, brake specific fuel consumption, start of combustion, heat release rate, turbo-charger speed and other variables. These values can then be used to adjust commanded variables such as start of injection, commanded pulse width, rail pressure to meet operator demand. Also the output data can be used as a tool to determine how a conceptualised engine design will behave. This is particularly useful for gaseous-fuelled internal combustion engines where cylinder pressure influences behaviour of injected gases in light of the fact that rail pressure and cylinder pressure are, generally, of a similar magnitude.

70 citations

References
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Book
01 Jan 1988
TL;DR: In this article, the authors describe real engine flow and combustion processes, as well as engine operating characteristics and their operation, including engine design and operating parameters, engine characteristics, and operating characteristics.
Abstract: 1 Engine Types and Their Operations 2 Engine Design and Operating Parameters 3 Thermochemistry of Fuel-Air Mixtures 4 Properties of Working Fluids 5 Ideal Models of Engine Cycles 6 Gas Exchange Processes 7 SI Engine Fuel Metering and Manifold Phenomena 8 Charge Motion within the Cylinder 9 Combustion in Ignition Engines 10 Combustion in Compression Ignition Engines 11 Pollutant Formation and Control 12 Engine Heat Transfer 13 Engine Friction and Lubrication 14 Modeling Real Engine Flow and Combustion Processes 15 Engine Operating Characteristics Appendixes

14,372 citations

Journal ArticleDOI
TL;DR: In this article, the authors considered the flow due to a jet spreading out over a plane surface, either radially or in two dimensions, and obtained a similarity solution for laminar flow.
Abstract: This paper considers the flow due to a jet spreading out over a plane surface, either radially or in two dimensions Solutions of the boundary layer equations are sought, according to which the form of the velocity distribution across the jet does not vary along its length For laminar flow, such a similarity solution is obtained explicitly For turbulent flow, an eddy viscosity is introduced, and it is eventually seen that complete similarity is not attainable, but that confident predictions can nevertheless be made about the nature of the velocity distribution and the rate of growth of the wall jet

899 citations

Journal ArticleDOI
TL;DR: In this paper, a thermodynamic model which predicts the properties of the burnt and unburnt gases during the combustion process is developed, and rate equations for nitric oxide concentrations as a function of time in the post-flame gases are derived.
Abstract: The nonequilibrium formation of nitric oxide within the internal combustion engine cylinder is examined. A thermodynamic model which predicts the properties of the burnt and unburnt gases during the combustion process is developed. A set of reactions which govern the formation of nitric oxide is proposed, and rate equations for nitric oxide concentrations as a function of time in the post-flame gases are derived. The results of time-resolved measurements carried out on a CFR engine are described, where emitted light intensities at wavelengths selected to record radiation from the CO + O and NO + O continua were used to determine the nitric oxide concentration. The comparison between theoretical and experimental results for fuel-lean mixtures confirms that the important features of the model presented are correct.

763 citations

Journal ArticleDOI
TL;DR: In this article, a mathematical model of spray combustion in direct-injection diesel engines was developed to predict engine performance, thermal efficiency and pollutant emissions, considering the complete air-fuel jet mixing process and temperature in each package.
Abstract: A mathematical model of a spray combustion in direct-injection diesel engines has been developed to predict engine performance, thermal efficiency and pollutant emissions. Injected fuel spray was divided into many small packages. Gas and fuel droplet temperatures and evaporated mass of fuel in each package were computed. In considering the complete air-fuel jet mixing process and temperature in each package, the model also enabled subsequent spatial and temporal history of burning rate, local temperature and air-fuel ratio to be calculated.

515 citations