scholarly journals Performance Characterization and Auto-Ignition Performance of a Rapid Compression Machine

Energies ◽  
2014 ◽  
Vol 7 (9) ◽  
pp. 6083-6104 ◽  
Author(s):  
Hao Liu ◽  
Hongguang Zhang ◽  
Zhicheng Shi ◽  
Haitao Lu ◽  
Guangyao Zhao ◽  
...  
Keyword(s):  
Rapid Compression Machine ◽  
Performance Characterization ◽  
Auto Ignition ◽  
Rapid Compression

scholarly journals Analysis of rapid compression machine facility effects on the auto-ignition of ethanol

Fuel ◽  
2020 ◽  
Vol 264 ◽  
pp. 116546 ◽  
Author(s):  
Chaitanya Wadkar ◽  
Prasanna Chinnathambi ◽  
Elisa Toulson
Keyword(s):  
Rapid Compression Machine ◽  
Auto Ignition ◽  
Rapid Compression

A rapid compression machine investigation of oxidation and auto-ignition of n-Heptane: Measurements and modeling

1995 ◽  
Vol 102 (3) ◽  
pp. 298-309 ◽  
Author(s):  
R. Minetti ◽  
M. Carlier ◽  
M. Ribaucour ◽  
E. Therssen ◽  
L.R. Sochet
Keyword(s):  
Rapid Compression Machine ◽  
Auto Ignition ◽  
Rapid Compression

Experimental study of pre-chamber jet ignition in a rapid compression machine and single-cylinder natural gas engine

2019 ◽  
pp. 146808741988378
Author(s):  
Fubai Li ◽  
Ziqing Zhao ◽  
Boyuan Wang ◽  
Zhi Wang
Keyword(s):  
Natural Gas ◽  
Experimental Results ◽  
Orifice Diameter ◽  
Rapid Compression Machine ◽  
Jet Flame ◽  
Gas Engine ◽  
Natural Gas Engine ◽  
Auto Ignition ◽  
Rapid Compression ◽  
Ignition And Combustion

Pre-chamber jet ignition is a promising combustion technology to achieve fast combustion in natural gas engines. First, the ignition and combustion characteristics of mixtures in a pre-chamber system with different diameter orifices were studied under engine-relevant pressures and temperatures in a rapid compression machine. The tested fuels, CH4/air stoichiometric mixtures, were diluted by different proportions of CO2/N2 to simulate the corresponding exhaust gas recirculation conditions in engines. High-speed photography was applied to visualize the jet ignition and combustion processes. The experimental results revealed that two ignition patterns existed in the pre-chambers depending on the diameter of orifices. Pre-chamber jet flame ignition pattern appeared when the orifice diameter of the pre-chamber exceeded a critical value, which produced jet flame and ignited the mixtures in the main chamber directly. Pre-chamber jet auto-ignition pattern produced jet which promoted the auto-ignition of mixture in the main chamber when the orifice diameter was smaller and presented much shorter combustion durations. Based on the experimental results in the rapid compression machine, a practical pre-chamber system was designed in a single-cylinder natural gas engine to investigate the combustion performance and emission characteristics. The experimental results indicated appropriate 0.8%–1.4% increases of indicated thermal efficiency were achieved by pre-chamber jet ignition due to the higher combustion efficiency and shorter combustion duration compared to conventional spark ignition. Lower total hydrocarbon and CO emissions but higher NO x emissions were produced by pre-chamber jet ignition due to the faster burning velocity and higher combustion temperature.

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