Abstract
The blue-name reaction is a real issue for the autoignition of hydrocarbon fuel/air mixtures in internal combustion engine cylinders. Once a blue flame has appeared, the following hot-flame onset would be inevitable, except for very special cases. Blue flame generates carbon monoxide briskly, and is the final induction stage of oxidation up to the real hot-flame ignition. Piston-compression ignitions of n-butane/air mixtures conditioned at slightly upper and lower than the lean ignitable pressure limit were compared using a rapid compression machine to elucidate the ignition promoter or ignition trigger to the final hot-flame appearance. Carbon-monoxide concentration is always superior to of the carbon dioxide during the whole induction period and its maximum is caused at the very late stage of blue-flame period. Based on chemical species histories it could be concluded that a carbon-monoxide/dioxide ratio should increase for the hot-flame establishment. A small amount of carbon-monoxide brimming over compared with carbon dioxide production rate during the blue-flame period would be a trigger for the transfer to the final hot-flame ignition.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
