By Lino Guzzella, Christopher Onder
ISBN-10: 3642107745
ISBN-13: 9783642107740
ISBN-10: 3642107753
ISBN-13: 9783642107757
Internal combustion engines (ICE) nonetheless have strength for giant advancements, fairly with reference to gas potency and environmental compatibility. in an effort to absolutely make the most the rest margins, more and more refined keep an eye on structures must be utilized. This booklet deals an advent to reasonably-priced model-based control-system layout for ICE. the first emphasis is wear the ICE and its auxiliary units. Mathematical versions for those tactics are constructed and recommendations for chosen feedforward and suggestions control-problems are presented.
The discussions relating pollutant emissions and gasoline economic climate of ICE in automobile purposes consistently intensified because the first version of this e-book was once released. matters concerning the air caliber, the restricted assets of fossil fuels and the hazardous results of greenhouse gases awfully spurred the curiosity of either the and academia in extra improvements.
The most crucial alterations and additions integrated during this moment version are:
• restructured and just a little prolonged part on superchargers;
• brief subsection on rotational oscillations and their therapy on engine test-benches;
• entire part on modeling, detection, and regulate of engine knock;
• enhanced actual and chemical version for the three-way catalytic converter;
• new technique for the layout of an air-to-fuel ratio controller;
• brief creation to thermodynamic engine-cycle calculation and corresponding control-oriented aspects
Read Online or Download Introduction to Modeling and Control of Internal Combustion Engine Systems PDF
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Extra resources for Introduction to Modeling and Control of Internal Combustion Engine Systems
Example text
Clearly, such models are not able to reflect all phenomena (the random combustion pressure variations in SI engines, for example). As shown in Fig. 1 Introduction 23 load torque) and several output signals. 2 Rather than physical quantities, the outputs also are signals that can be used by the controller without the system behavior being affected. The only physical link of the engine to the rest of the power train is the load torque, which in this text is assumed to be known. , COM that explicitly take into account the reciprocating behavior of the engine.
In the intake and exhaust manifolds, for instance, not only masses, but thermal (internal) energy is important. Accordingly, two level variables (pressure and temperature) form the output of these blocks. The turbocharger’s rotor, which stores kinetic energy, is an additional reservoir. If EGR and intercooling are modeled as well, the cause and effect diagram has a similar, but even more complex structure. , the ratio between fresh air and burnt gases in the intake. If perfect mixing can be assumed, this leads to only one additional reservoir, see Sect.
The sum of these statements makes an extrapolation to lower speed regions inevitable. The extrapolation can either be done with a good physical model or with map fitting. Unfortunately, the former does not result in sufficiently accurate models. Several methods for map fitting are presented by [182] and [146]. Good results can be achieved by the inverted approach described in [105]. 56) With a least square fitting algorithm, the parameters kij can be identified with measurement data. 57) The results of this fitting can be seen in Fig.
Introduction to Modeling and Control of Internal Combustion Engine Systems by Lino Guzzella, Christopher Onder
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