Internal combustion engine modelling
Internal combustion engine model
Internal combustion engines still have a lot of room for improvement, particularly in terms of fuel efficiency and environmental friendliness. Control systems will help you accomplish these objectives. Modeling and Control of Internal Combustion Engines (ICE) addresses these concerns by providing an introduction to ICE model-based control system design that is both cost-effective and functional. The ICE and its auxiliary equipment earn the most coverage. The text develops mathematical models for these processes and discusses a few feedforward and feedback management issues. A description of the most relevant controller analysis and design methods is included in the appendix, as well as a case study that discusses a simplified idle-speed control problem. The book is aimed at students who want to learn how to build traditional and novel ICE control systems.
“Modeling and control of internal combustion engines for automotive applications is the subject of this book. In conclusion, anyone interested in engine control design should read this book. It appears to be appropriate for a graduate-level course, particularly for students with a background in control. The book is aimed at students, according to the writer… I’d also like to point out that engine control professionals will benefit greatly from this book…” (IEEE Control Systems Magazine, December 2005, Mrdjan Jankovic)
Science please! : the internal combustion engine
Internal combustion engines (ICE) still have a lot of room for improvement, particularly in terms of fuel efficiency and environmental friendliness. Increasingly complex control systems must be used to completely leverage the remaining margins. This book provides an overview of how to develop cost-effective model-based control systems for ICE. The ICE and its auxiliary equipment earn the most coverage. These processes are mathematically modelled, and solutions to selected feedforward and feedback control problems are provided.
Since the first edition of this book was released, the debate over pollutant pollution and ICE fuel economy in automotive applications has continued to heat up. Concerns regarding air quality, dwindling fossil fuel supplies, and the negative effects of greenhouse gases have piqued the interest of both industry and academia in making further changes.
• restructured and slightly expanded section on superchargers;• short subsection on rotational oscillations and their treatment on engine test benches;• complete section on engine knock modeling, detection, and control;• improved physical and chemical model for three-way catalytic converter;• new methodology for the design of an air-to-fuel ratio controller;• short introduction to thermodyne
Prosig-031: building a model of an internal combustion engine
The SRM Engine Suite is an engineering software platform for simulating fuels, combustion, and exhaust gas emissions in IC engine applications. Leading IC engine production companies and fuel companies use it all over the world. CMCL Innovations, based in Cambridge, U.K., developed, maintains, and supports the app.
With several examples published in various leading peer-reviewed journals, the program has been used to model almost all engine applications and all transportation fuel combinations. A brief overview of these papers is provided here.
, since the particle ensemble’s dynamics involve detailed chemical kinetics as well as inhomogeneity in composition and temperature space caused by ongoing fuel injection, heat transfer, and turbulence mixing events. Heat release profiles and, in particular, related exhaust gas emissions (particulates, NOx, carbon monoxide, unburned hydrocarbon, and so on) can be predicted more accurately using this coupling than using more traditional homogeneous and multi-zone reactor methods. [three]
How it works: internal combustion engine
2.2. Discretization of Space
Build your own miniature internal combustion engine model
The nonlinear partial differential equations derived from mass, momentum, and energy conservation are not analytically solveable. By replacing the infinitesimal length with a finite length (finite difference) and integrating with a proper ODE solver, the equations can be translated to ordinary differential equations (e.g., Runge-Kutta and Euler method). A staggered grid solution is used to discretize the flow duct. As shown in Figure 2, a staggered grid method divides the pipe or duct into parts of equal length. The rates of change in density and real internal energy at each cell center are calculated by conservation of mass and energy laws, which can be used to measure cell pressure and temperature. The mass flow rate crossing each cell boundary is determined by conservation of momentum at each cell boundary (), and the energy flow rate can be calculated using upstream cell details. To increase stability and simplify Simulink block communication at the boundaries, the staggered grid approach was chosen over a collocated system such as the Lax-Wendroff method [12, 13]. Figure 2: Grid discretization with a staggered grid. By substituting for (finite difference form) and using, the conservation of mass equation shown in Equation (1) can be translated from the differential form. The rate at which cell density changes becomes