ignition quality

ignition quality

[ig′nish·ən ‚kwäl·əd·ē]
(chemical engineering)
The property of a fuel that ignites when injected into the compressed-air charge in a diesel engine cylinder; measurement is given in terms of cetane number.
References in periodicals archive ?
[37.] Kalghatgi, G., Risberg, P., and Angstrom, H., "A Method of Defining Ignition Quality of Fuels in HCCI Engines," SAE Technical Paper 200301-1816, 2003, doi:10.4271/2003-01-1816.
In case of HVO fueling, these issues could be inherently counteracted due to its superior ignition quality. The successful operability of HVO in low compression engines is not only beneficial for Soot-[NO.sub.X] trade-off but offers additional advantage in specific power output when a given peak cylinder pressure must not be exceeded.
This synthetic fuel is free from sulphur and aromatic hydrocarbons and has high ignition quality. Lab tests conducted at Audi have shown it to be suitable for mixing with fossil diesel or, prospectively, for use as a fuel in its own right.
Malcolm Wells, communications manager for Sasol Chevron, told The Surveyor that GTLD had a cetane (ignition quality) of more than 70 compared to a traditional diesel cetane of 52 "and from that point of view our product gives a performance bonus straight away--you get a cleaner burn which reduces engine wear, you get much better cold start properties, less noise and less smoke, so straight away, compared to traditional diesel, you've got a performance benefit and an emissions benefit." However these things were likely to command some sort of premium.
Fuels are compared with this liquid to determine their ignition quality. The exact rating is determined by mixing cetane with a chemical called methylnaphthalene to produce a similar ignition quality of the fuel being tested.
The difficulty of obtaining a reliable measure of the ignition quality of ethanol in these engines was highlighted which raised the question as to the validity of the cetane scale for representing the ignition quality of non-petroleum fuels.
Tenders are invited for Supply of an Ignition Quality Tester for the University of Limerick.
Around this time at the Southwest Research Institute (SWRI), CVCC developments were pursued as an alternative method to evaluate the ignition quality of fuels.
[12.] Alfazazi, A., et al., Two-stage Lagrangian modeling of ignition processes in ignition quality tester and constant volume combustion chambers.
Ignition quality, quantified by a cetane number, is one of the most important combustion characteristics of diesel fuel.
[25.] Naser, N, Yang, S.Y, Kalghatgi, G., and Chung, S.H., "Relating the Octane Numbers of Fuels to Ignition Delay Times Measured in an Ignition Quality Tester (IQT)," Fuel 187:117-127, 2017.
[34.] Zheng, Z., Badawy, T., Henein, N., and Sattler, E., "Investigation of Physical and Chemical Delay Periods of Different Fuels in the Ignition Quality Tester," J.