Quasi-Dimensional Simulation of Spark Ignition Engines


Book Description

Based on the simulations developed in research groups over the past years, Introduction to Quasi-dimensional Simulation of Spark Ignition Engines provides a compilation of the main ingredients necessary to build up a quasi-dimensional computer simulation scheme. Quasi-dimensional computer simulation of spark ignition engines is a powerful but affordable tool which obtains realistic estimations of a wide variety of variables for a simulated engine keeping insight the basic physical and chemical processes involved in the real evolution of an automotive engine. With low computational costs, it can optimize the design and operation of spark ignition engines as well as it allows to analyze cycle-to-cycle fluctuations. Including details about the structure of a complete simulation scheme, information about what kind of information can be obtained, and comparisons of the simulation results with experiments, Introduction to Quasi-dimensional Simulation of Spark Ignition Engines offers a thorough guide of this technique. Advanced undergraduates and postgraduates as well as researchers in government and industry in all areas related to applied physics and mechanical and automotive engineering can apply these tools to simulate cyclic variability, potentially leading to new design and control alternatives for lowering emissions and expanding the actual operation limits of spark ignition engines




Energy and Combustion Science


Book Description

Energy and Combustion Science is a collection of papers that covers advancement in the field of energy and combustion science. The materials presented in the book are organized thematically into parts. The text first covers the issues, concerns, problems of the contemporary combustion technology. The subsequent parts of the book cover various areas in combustions science, namely, pollution, gas, oil, coal, and engines. Most of the articles in the book are concerned with the byproduct of fuel combustion. The text will be of great use to students, researchers, and practitioners of disciplines that deal with the energy and combustion technology.




Design of Racing and High-Performance Engines 1998-2003


Book Description

The 53 technical papers in this book show the improvements and design techniques that researchers have applied to performance and racing engines. They provide an insight into what the engineers consider to be the top improvements needed to advance engine technology; and cover subjects such as: 1) Direct injection; 2) Valve spring advancements; 3) Turbocharging; 4) Variable valve control; 5) Combustion evaluation; and 5) New racing engines.










Engineering Combustion Essentials


Book Description

Whether in the Stone Age or in Greek mythology, fire has always been the essence of life. As G.G. Brown put it in 1928, “Combustion is without exaggeration the most important reaction to the human race. All human and animal existence depends upon combustion as its course of energy.” This book provides a detailed description of the elements of combustion, offering descriptive figures, illustrative quips, and analogies to facilitate understanding. It begins with some historical highlights of the understanding of combustion and technological progresses. It then discusses the thermodynamic and chemical kinetics underlying the fast chemical reactions, before expounding on the fundamental combustion wave, or flame. After this, the book moves onto the premixed turbulent flame and the spark-ignited turbulent flame, before considering the diffusion-controlled, non-premixed flame in both laminar and turbulent forms. The book concludes with explanations of wonderful natural combustion, fire, fire-retarding slime and DNA, and the amazing bombardier beetle.







Study of Spark Ignition Engine Combustion Model for the Analysis of Cyclic Variation and Combustion Stability at Lean Operating Conditions


Book Description

A fundamental combustion model for spark-ignition engine is studied in this report. The model is implemented in SIMULINK to simulate engine outputs (mass fraction burn and in-cylinder pressure) under various engine operation conditions. The combustion model includes a turbulent propagation and eddy burning processes based on literature [1]. The turbulence propagation and eddy burning processes are simulated by zero-dimensional method and the flame is assumed as sphere. To predict pressure, temperature and other in-cylinder variables, a two-zone thermodynamic model is used. The predicted results of this model match well with the engine test data under various engine speeds, loads, spark ignition timings and air fuel mass ratios. The developed model is used to study cyclic variation and combustion stability at lean (or diluted) combustion conditions. Several variation sources are introduced into the combustion model to simulate engine performance observed in experimental data. The relations between combustion stability and the introduced variation amount are analyzed at various lean combustion levels.