Proceedings ArticleDOI
Compression-Ignited Homogeneous Charge Combustion
Paul M. Najt,David E. Foster +1 more
- Vol. 830264
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TLDR
In this article, a systematic study was carried out to evaluate the response of compression-ignited homogeneous charge (CIHC) combustion to changes in operating parameters with emphasis being placed on the phenomena involved rather than the detailed chemical kinetics.Abstract:
Experimentally obtained energy release results, a semi-empirical ignition model, and an empirical energy release equation developed during this research were used to evaluate the combustion of compression-ignited homogeneous mixtures of fuel, air, and exhaust products in a CFR engine. A systematic study was carried out to evaluate the response of compression-ignited homogeneous charge (CIHC) combustion to changes in operating parameters with emphasis being placed on the phenomena involved rather than the detailed chemical kinetics. This systematic study revealed that the response of the combustion process to changes in operating parameters can be explained in terms of known chemical kinetics, and that through the proper use of temperature and species concentrations the oxidation kinetics of hydrocarbon fuels can be sufficiently controlled to allow an engine to be operated in a compression-ignited homogeneous charge combustion mode.read more
Citations
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Journal ArticleDOI
Progress and recent trends in homogeneous charge compression ignition (HCCI) engines
TL;DR: In this paper, five types of models applied to HCCI engine modelling are discussed in the present paper, and specific strategies for diesel-fuelled, gasoline-fined, and other alternative fuelled combustion are also discussed.
Patent
Premixed charge compression ignition engine with optimal combustion control
Axel O. zur Loye,Omowoleola C. Columbus Akinyemi,Russ P. Durrett,Patrick F. Flynn,Gary L. Hunter,Greg A. Moore,Jackie M. Mudd,George G. Muntean,Julie A. Wagner,John F. Wright +9 more
TL;DR: In this paper, a premixed charge compression ignition engine, and a control system, is provided which effectively initiates combustion by compression ignition and maintains stable combustion while achieving extremely low nitrous oxide emissions, good overall efficiency and acceptable combustion noise and cylinder pressures.
Proceedings ArticleDOI
Demonstrating the Multi Fuel Capability of a Homogeneous Charge Compression Ignition Engine with Variable Compression Ratio
TL;DR: In this article, the authors demonstrate the multi fuel capability of a homogeneous charge compression Ignition Engine with Variable Compression Ratio (VCR) and demonstrate its multi-fuel capability.
Journal ArticleDOI
Fuel design and management for the control of advanced compression-ignition combustion modes
Xingcai Lu,Dong Han,Zhen Huang +2 more
TL;DR: The most prominent characteristic of new combustion modes, such as HCCI, Stratified-charge Compression-Ignition (SCCI), and Low-Temperature Combustion (LTC), is the requirement of creating a homogenous mixture or controllable stratified mixture prior to ignition as discussed by the authors.
References
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Proceedings ArticleDOI
Active Thermo-Atmosphere Combustion (ATAC) - A New Combustion Process for Internal Combustion Engines
TL;DR: Active Thermo-Atmosphere Combustion (ATAC) as discussed by the authors is a new lean combustion process for internal combustion engines that differs from conventional gasoline and diesel engine combustion processes.
Journal ArticleDOI
The autoignition of hydrocarbon fuels at high temperatures and pressures—Fitting of a mathematical model
TL;DR: In this paper, a systematic study has been carried out of the autoignition of a number of hydrocarbon fuels under engine-like conditions in a rapid compression machine, and the results confirm that there is a strong correlation between the performance of these fuels in engines and their auto-ignition properties measured in a Rapid Compression Machine (RCM).
Proceedings ArticleDOI
A computer program for calculating properties of equilibrium combustion products with some applications to i.c. engines
Cherian Olikara,Gary L. Borman +1 more
TL;DR: In this article, a computer program which rapidly calculates the equilibrium mole fractions and the partial derivatives of the mole fractions with respect to temperature, pressure and equivalence ratio for the products of combustion of any hydrocarbon fuel and air is described.
Journal ArticleDOI
A Mathematical Model for Hydrocarbon Autoignition at High Pressures
TL;DR: In this article, a generalized mathematical model for the autoignition of hydrocarbons under the conditions of high pressure and temperature achieved in a rapid-compression machine is presented; the model is able to simulate the essential phenomena of the two-stage autoignitions of alkanes under these conditions; these are a well defined cool flame that is often quenched rapidly and completely before the onset of a sharp ignition.
Journal ArticleDOI
The Cool Flames of Hydrocarbons
TL;DR: In this paper, the properties of the cool-flame and two-stage ignition processes that characterize the gaseous oxidation of hydrocarbons and discusses the chemical reactions that are responsible for these phenomena.