Journal ArticleDOI
Review of the development and applications of the Wiebe function: A tribute to the contribution of Ivan Wiebe to engine research
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TLDR
The Wiebe function as discussed by the authors is used to predict the burn fraction and burn rate in internal combustion engines operating with different combustion systems and fuels, including direct injection (DI) and indirect injection (IDI) diesel engines, classical spark ignition (SI) engines, engines with homogeneous charge compression ignition (HCCI) and premixed charge compression ignited (PCCI).Abstract:
Analytical functions approximating the burn rate in internal combustion engines are useful and cost-effective tools for engine cycle simulations. Most functions proposed to date are based on the law of normal distribution of a continuous random variable. The best known of these is the Wiebe function, which is used to predict the burn fraction and burn rate in internal combustion engines operating with different combustion systems and fuels. These include direct injection (DI) and indirect injection (IDI) diesel engines, classical spark ignition (SI) engines and gasoline direct injection (GDI) engines, engines with homogeneous charge compression ignition (HCCI) and premixed charge compression ignition (PCCI). This paper is a tribute to the lasting legacy of the Wiebe function and to the man behind it, Ivan Ivanovitch Wiebe. It includes a historical background to the development of the function in the mid 1950s in the Soviet Union, the controversy that surrounded its introduction, a description of t...read more
Citations
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Performance, combustion, and emission characteristics of a diesel engine fueled by biodiesel-diesel mixtures with multi-walled carbon nanotubes additives
Ahmed I. EL-Seesy,Ahmed I. EL-Seesy,Ali K. Abdel-Rahman,Ali K. Abdel-Rahman,Mahmoud Bady,Mahmoud Bady,Shinichi Ookawara +6 more
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References
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Proceedings ArticleDOI
An Analytic Model for Cylinder Pressure in a Four Stroke SI Engine
Lars Eriksson,Ingemar Andersson +1 more
TL;DR: In this paper, an analytic model for cylinder pressures in spark ignited engines is developed and validated, which is based on a parameterization of the ideal Otto cycle and takes variations in spark advance and air-to-fuel ratio into account.
Journal ArticleDOI
Dynamic Modeling of Residual-Affected Homogeneous Charge Compression Ignition Engines with Variable Valve Actuation
TL;DR: In this paper, a simple model of the overall charge compression ignition (HCCI) process is presented to capture the importance of species concentrations and temperature on the ignition process and predict the start of combustion.
Journal ArticleDOI
Gas-Diesel (dual-fuel) modeling in diesel engine environment
TL;DR: In this paper, the authors investigated the emission and performance characteristics of a commercial diesel engine (Deutz FL8 413F) being operated on natural gas with pilot diesel ignition, and a computer program has been developed to model the experimental data using a chemical kinetic reaction mechanism of the Gas-Diesel (dual-fuel) combustion.
Journal ArticleDOI
Optimization of variable valve timing for maximizing performance of an unthrottled SI engine—a theoretical study
Eran Sher,Tali Bar-Kohany +1 more
TL;DR: In this article, the MICE (Modeling Internal Combustion Engines) computer program was used to simulate an actual SI cycle and the valve timing strategies for maximizing engine torque and minimizing bsfc in terms of the exhaust opening (EO), intake opening (IO) and intake closing (IC) timings of a commercial SI engine were studied.