Spontaneous ignition temperature SIT

The niaxiinwn spontaneous ignition temperature (SIT) or autoignition temperature (AIT) is defined as die minimum temperature at wliicli combustion occurs in a bulk gas mixture when die temperature of a flaiiunable gas-air mixture is raised in a unifonidy heated apparatus. The autoignidon temperature represents... 

The autoignition temperature (AIT) of a vapor, sometimes called the spontaneous ignition temperature (SIT), is the temperature at which the vapor ignites spontaneously from the energy of the environment. The autoignition temperature is a function of the concentration of vapor, volume of vapor, pressure of the system, presence of catalytic material, and flow conditions. It is essential to experimentally determine AITs at conditions as close as possible to process conditions. 

Four important tests which are used to characterize an engine fuel are the spontaneous ignition temperature (SIT), flash point, fire point, and smoke point. These tests are standardized, and specialized fuels have specific requirements as defined by these tests. The SIT is dependent on the composition of the fuel and the conditions of the walls of the cylinder. Diesel fuels require low SIT with short delay times of the order of 1-2 ms. The SIT of heptane (CN = 60) is 330°C, whereas benzene with CN = —10 has a SIT of 420°C. 

Table 4.4 Boiling point (BP), flash point (FP), spontaneous ignition temperature (SIT), and smoke point (SP) of selected substances...

SelbstentzUndung, SpontanzUndung ignition point/ kindling temperature/ flame temperature/ flame point/spontaneous-ignition temperature (SIT)... 

A. Zeman, H.P. Binder, Determination of spontaneous ignition temperatures (SITs) of aviation lubricants using pressure differential calorimetry (PDSC). Thermochim. Acta 98, 159-165 (1986)... 

SIT spontaneous ignition temperature SOCONY Standard Oil Co of New York... 

The ASTM fire test procedure describes a laboratory determination of the flash ignition temperature (FIT) and spontaneous ignition temperature, or self-ignition temperature (SIT) of plastics and composites using a hot-air furnace. FIT is the minimum temperature at which sufficient flammable gases are emitted to ignite by a... 

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