Review of high efficiency and clean reactivity controlled compression ignition (RCCI) combustion in internal combustion engines
TL;DR: In this paper, a dual fuel engine combustion technology called Reactivity Controlled Compression Ignition (RCCI) is highlighted, since it provides more efficient control over the combustion process and has the capability to lower fuel use and pollutant emissions.
About: This article is published in Progress in Energy and Combustion Science.The article was published on 2015-02-01 and is currently open access. It has received 889 citations till now. The article focuses on the topics: Homogeneous charge compression ignition & Internal combustion engine.
Citations
More filters
TL;DR: In this paper, an overview of the latest technology of the engine-Organic Rankine Cycle system in the applications of waste heat recovery from the heat sources with different temperatures, with particular concentration on diesel engines.
238 citations
TL;DR: A comprehensive overview of research on fuel reforming in internal combustion engines can be found in this article, where a discussion on the considerations to be made prior to choosing a primary fuel for reforming purposes, and the main processes in fuel reforming are discussed.
203 citations
01 Jan 2017
TL;DR: In this article, the authors illustrate the current state-of-the-art in predicting the kinetics of gas-phase reactions through sample calculations for some prototypical reactions central to combustion chemistry.
Abstract: The chemical modeling of combustion treats the chemical conversion of hundreds of species through thousands of reactions. Recent advances in theoretical methodologies and computational capabilities have transformed theoretical chemical kinetics from a largely empirical to a highly predictive science. As a result, theoretical chemistry is playing an increasingly significant role in the combustion modeling enterprise. The accurate prediction of the temperature and pressure dependence of gas phase reactions requires state-of-the-art implementations of a variety of theoretical methods: ab initio electronic structure theory, transition state theory, classical trajectory simulations, and the master equation. In this work, we illustrate the current state-of-the-art in predicting the kinetics of gas-phase reactions through sample calculations for some prototypical reactions central to combustion chemistry. These studies are used to highlight the success of theory, as well as its remaining challenges, through comparisons with experiments ranging from elementary reaction kinetics studies through to global observations such as flame speed measurements. The illustrations progress from the treatment of relatively simple abstraction and addition reactions, which proceed over a single transition state, through to the complexity of multiwell multichannel reactions that commonly occur in studies of the growth of polycyclic aromatic hydrocarbons. In addition to providing high quality rate prescriptions for combustion modelers, theory will be seen to indicate various shortcomings in the foundations of chemical modeling. Future progress in the fidelity of the chemical modeling of combustion will benefit from more widespread applications of theoretical chemical kinetics and from increasingly intimate couplings of theory, experiment, and modeling.
187 citations
TL;DR: The U.S. Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan as mentioned in this paper, which can be found at http://energy.gov/downloads/doe-public-access-plan.
169 citations
Cites background from "Review of high efficiency and clean..."
...Numerous studies have recently explored the very wide operating space including fuel, engine parameters and operating conditions [21,22]....
[...]
...might be applied in LTC engine schemes such as reactivity controlled compression ignition [22], these studies have also highlighted opportunities whereby conventional cetane improvers, or other radical precursors, e....
[...]
...Fuel additives have historically been classified as knock inhibitors (anti-knock agents) or cetane improvers, and while they have been explored primarily for conventional SI and CI combustion systems, there are numerous potential applications within LTC schemes [22]....
[...]
TL;DR: In this article, the authors investigated the long-term impact of current ripple on battery performance degradation and found that both capacity fade and impedance rise progressively increase as the frequency of the superimposed AC current increases.
167 citations
Cites background from "Review of high efficiency and clean..."
...In conventional vehicles, lightweight materials [8] and advanced combustion engines [9] are continually being improved to increase fuel economy....
[...]
References
More filters
Book•
01 Jan 1988
TL;DR: In this article, the authors describe real engine flow and combustion processes, as well as engine operating characteristics and their operation, including engine design and operating parameters, engine characteristics, and operating characteristics.
Abstract: 1 Engine Types and Their Operations 2 Engine Design and Operating Parameters 3 Thermochemistry of Fuel-Air Mixtures 4 Properties of Working Fluids 5 Ideal Models of Engine Cycles 6 Gas Exchange Processes 7 SI Engine Fuel Metering and Manifold Phenomena 8 Charge Motion within the Cylinder 9 Combustion in Ignition Engines 10 Combustion in Compression Ignition Engines 11 Pollutant Formation and Control 12 Engine Heat Transfer 13 Engine Friction and Lubrication 14 Modeling Real Engine Flow and Combustion Processes 15 Engine Operating Characteristics Appendixes
14,372 citations
Book•
01 Mar 2000
TL;DR: In this article, the second edition of the Second Edition of the first edition, the authors presented a simplified conversation equation for the solution of nonlinear flow equations for a C-H-O-N system.
Abstract: Preface Preface to the Second Edition Preface to the First Edition 1: Introduction 2: Combustion and Thermochemistry 3: Introduction to Mass Transfer 4: Chemical Kinetics 5: Some Important Chemical Mechanisms 6: Coupling Chemical and Thermal Analyses of Reacting Systems 7: Simplifed Conversation Equations for Reacting Flows 8: Laminar Premixed Flames 9: Laminar Diffusion Flames 10: Droplet Evaporation and Burning 11: Introduction to Turbulent Flows 12: Turbulent Premixed Flames 13: Turbulent Nonpremixed Flames 14: Burning of Solids 15: Pollutant Emissions 16: Detonations Appendix A: Selected Thermodynamic Propertiesof Gases Comprising C-H-O-N System Appendix B: Fuel Properties Appendix C: Selected Properties of Air, Nitrogen, and Oxygen Appendix D: Diffusion Coefficients and Methodology for their Estimation Appendix E: Generalized Newton's Method for the Solution of Nonlinear Equations Appendix F: Computer Codes for Equilibrium Products of Hydrocarbon-Air Combustion
2,129 citations
971 citations
05 Mar 2001
821 citations
TL;DR: In this article, a fuel reactivity controlled compression ignition (RCCI) concept is demonstrated as a promising method to achieve high efficiency, which is demonstrated in a heavy-duty test engine over a range of loads.
Abstract: A fuel reactivity controlled compression ignition (RCCI) concept is demonstrated as a promising method to achieve high efficiency – clean combustion. Engine experiments were performed in a heavy-duty test engine over a range of loads. Additionally, RCCI engine experiments were compared to conventional diesel engine experiments. Detailed computational fluid dynamics modelling was then used to explain the experimentally observed trends. Specifically, it was found that RCCI combustion is capable of operating over a wide range of engine loads with near zero levels of NOx and soot, acceptable pressure rise rate and ringing intensity, and very high indicated efficiency. For example, a peak gross indicated efficiency of 56 per cent was observed at 9.3 bar indicated mean effective pressure and 1300 rev/min. The comparison between RCCI and conventional diesel showed a reduction in NOx by three orders of magnitude, a reduction in soot by a factor of six, and an increase in gross indicated efficiency of 16.4 per cen...
707 citations