scholarly journals The assessment of the of the usefulness of a Rapid Compression Machine in optical research on the injection and combustion processes of liquid fuels

2010 ◽  
Vol 143 (4) ◽  
pp. 3-14
Author(s):  
Krzysztof WISŁOCKI ◽  
Ireneusz PIELECHA ◽  
Jakub CZAJKA ◽  
Dmitrij MASLENNIKOV ◽  
Jacek KAŹMIEROWSKI
Keyword(s):  
Design Principles ◽  
Similar Type ◽  
Test Stand ◽  
Liquid Fuels ◽  
Rapid Compression Machine ◽  
Ic Engines ◽  
Rapid Compression ◽  
Combustion Processes

In the paper the possibilities of a Rapid Compression Machine in the investigation of the fundamental processes in IC engines have been presented. The test-stand design, principles of its control and basic operational features have been discussed and compared with the parameters of the test facilities of similar type currently in use worldwide. A short evaluation has been performed of its functionality and possibilities of application in the research on thermodynamics of injection and combustion processes. The evaluation pointed to the possibility of variation of the parameters and variables in the RCM. The main parameters and operational indexes of the Test-stand have been presented along with some examples of the achieved results from the investigations of engine internal processes

scholarly journals Analysis of the possibilities to achieve adiabatization process of combustion surrounded by inactive gases in Rapid Compression Machine

2017 ◽  
Vol 168 (1) ◽  
pp. 27-31
Author(s):  
Wojciech CIEŚLIK ◽  
Ireneusz PIELECHA
Keyword(s):  
Combustion Process ◽  
Combustible Mixture ◽  
Spark Ignition Engine ◽  
Rapid Compression Machine ◽  
Working Medium ◽  
Main Injection ◽  
Rapid Compression ◽  
Combustible Gases ◽  
Combustion Processes ◽  
Combustible Mixtures

In this work non-combustible gases impact on combustion processes studies is performed. Research was performed in a optically accessible rapid compression machine (RCM) under spark ignition engine conditions. The distribution of the swirl charge in the relation to adopted for analysis sequence of gas delivery to the chamber was varied with regard to the main injection. Authors investigate the influence of these sequence on the combustion and the ignition delay of the main injection and the overall combustion characteristics. The aim of this work is the experimental recognition of possibilities of creating combustible mixtures of light hydrocarbon fuels surrounded by non-combustible gases affecting the function of the inhibitor. Specifying the ability of preparation and combustion of mixtures in such systems enables the scientific analysis of adiabatization of the combustion process of fuel-air mixtures in the operating chambers. Theoretical analysis of the issues indicates possibility of obtaining such a stratification of the charge, that the inactive exhaust gases creating the outer ring surround the combustible mixture inside in such a way as to reduce the amount of heat exchanged between the working medium and the walls of the cylinder.

An aerosol rapid compression machine for studying energetic-nanoparticle-enhanced combustion of liquid fuels

2011 ◽  
Vol 33 (2) ◽  
pp. 3367-3374 ◽  
Author(s):  
Casey Allen ◽  
Gaurav Mittal ◽  
Chih-Jen Sung ◽  
Elisa Toulson ◽  
Tonghun Lee
Keyword(s):  
Liquid Fuels ◽  
Rapid Compression Machine ◽  
Rapid Compression

Numerical Simulation of a Controlled Trajectory Rapid Compression Machine

2020 ◽  
Author(s):  
Krishna C. Bavandla ◽  
Dezhi Zhou ◽  
Abhinav Tripathi ◽  
Zongxuan Sun ◽  
Suo Yang
Keyword(s):  
Numerical Simulation ◽  
Rapid Compression Machine ◽  
Rapid Compression

MECHANISM AND CHARACTERISTICS OF GEL FUEL IGNITION

2020 ◽  
Author(s):  
O. S. Gaydukova ◽  
◽  
D. O. Glushkov ◽  
A. G. Nigay ◽  
A. G. Kosintsev ◽  
...  
Keyword(s):  
Thermal Power ◽  
Aerospace Industry ◽  
Theory Development ◽  
Liquid Fuels ◽  
Ignition Characteristics ◽  
Deformable Materials ◽  
Combustion Processes ◽  
Thermal Power Engineering ◽  
Storage Processes ◽  
Emulsions And Suspensions

Recently, prospective direction of the combustion theory development is the preparation of fuel compositions and study of the composite fuels ignition characteristics, for example, in the form of emulsions and suspensions. Such fuels and their combustion processes are characterized by higher environmental, energy, economic, and operational properties. Of great interest is the use of gel fuels prepared by thickening emulsions and suspensions to the state of elastically deformable materials for the aerospace industry and thermal power engineering. Gel fuels have advantages over widespread liquid fuels in environmental and fire safety aspects of storage processes, transportation, and combustion.

Autoignition of H2/CO at elevated pressures in a rapid compression machine

2006 ◽  
Vol 38 (8) ◽  
pp. 516-529 ◽  
Author(s):  
Gaurav Mittal ◽  
Chih-Jen Sung ◽  
Richard A. Yetter
Keyword(s):  
Rapid Compression Machine ◽  
Elevated Pressures ◽  
Rapid Compression

scholarly journals Combustion Thermodynamics of Ethanol, n-Heptane, and n-Butanol in a Rapid Compression Machine with a Dual Direct Injection (DDI) Supply System

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2729
Author(s):  
Ireneusz Pielecha ◽  
Sławomir Wierzbicki ◽  
Maciej Sidorowicz ◽  
Dariusz Pietras
Keyword(s):  
Heat Release ◽  
Combustion Chamber ◽  
Internal Combustion Engines ◽  
Direct Injection ◽  
Combustion Process ◽  
Combustion Efficiency ◽  
Injection System ◽  
Rapid Compression Machine ◽  
Process Indicators ◽  
Rapid Compression

The development of internal combustion engines involves various new solutions, one of which is the use of dual-fuel systems. The diversity of technological solutions being developed determines the efficiency of such systems, as well as the possibility of reducing the emission of carbon dioxide and exhaust components into the atmosphere. An innovative double direct injection system was used as a method for forming a mixture in the combustion chamber. The tests were carried out with the use of gasoline, ethanol, n-heptane, and n-butanol during combustion in a model test engine—the rapid compression machine (RCM). The analyzed combustion process indicators included the cylinder pressure, pressure increase rate, heat release rate, and heat release value. Optical tests of the combustion process made it possible to analyze the flame development in the observed area of the combustion chamber. The conducted research and analyses resulted in the observation that it is possible to control the excess air ratio in the direct vicinity of the spark plug just before ignition. Such possibilities occur as a result of the properties of the injected fuels, which include different amounts of air required for their stoichiometric combustion. The studies of the combustion process have shown that the combustible mixtures consisting of gasoline with another fuel are characterized by greater combustion efficiency than the mixtures composed of only a single fuel type, and that the influence of the type of fuel used is significant for the combustion process and its indicator values.

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