Diesel Engine Transient Operation By Constantine D. Rakopoulos and Evangelos G. Giakoumis
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Diesel Engine Transient Operation By Constantine D. Rakopoulos and Evangelos G. Giakoumis

iscrepancies, exhaust emissions and methods of improving transient response. However, it has been our intention to cover the subject from all relevant aspects; consequently, the interested reader will be able to find information on areas of ‘lesser popularity’ such as second-law (exergy, availability) analysis, compressor surging or crankshaft torsional deformation during transients. Although automotive applications are usually the main case studied, industrial or marine engines’ transient response is dealt with too.

Moreover, the analysis is thermodynamics rather than control oriented. Control matters are only briefly discussed, mainly in Chapter 6, where the effects of the various control strategies on the engine transient response improvement are pinpointed. The book is organized as follows: in Chapter 1, an introduction to transient diesel engine operation is given, highlighting various typical load acceptance and acceleration schedules of both automotive and industrial/marine engines, and detailing the importance and different evolution pattern of transient operation compared with steady-state conditions.

Chapter 2 describes the complex thermodynamic issues of transient operation (located in the fuel injection mechanism, heat transfer, combustion, air-supply and exhaust gas recirculation processes), starting, of course, with the discussion of the fundamental turbocharger lag problem. Chapter 3 focuses on the dynamic issues encountered during transients, namely friction overshoot, components stress and crankshaft torsional deformation.

Chapter 4 discusses briefly the experimental procedure involved in transient diesel engine research, addressing in more detail the instantaneous particulate matter measurement techniques and the heat release analysis of transient pressure data. Chapter 5 deals with the very important aspect of exhaust emissions during transients, and Chapter 6 with the various methods developed over the years for reducing the turbocharger lag phase and improving transient response.

Chapter 7 focuses on other aspects of transient conditions, namely cold starting, operation when the turbocharger compressor experiences surge and lowheat rejection engine operation. Chapter 8 provides an alternative coverage of the subject through the perspective of the second law of thermodynamics. Finally, Chapter 9 summarizes the various modeling approaches developed over the years for the simulation of transient operation.

This book is the outcome of many years of research on the subject and it is intended to serve as a reference for engineers and researchers but it should also be useful to (post-graduate) students as a supplementary text. It is expected that the reader is already familiar with (basic) aspects of internal combustion engine operation. Consequently, when dealing, for example, with the combustion development during transients.

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