Editing Flash point (section)

== Examples ==
{| style="float:right; margin-left: 1em;" class="wikitable sortable"
! Fuel
! Flash point
! Autoignition<br>temperature
|-
|[[Ethanol]] (70%)
|{{convert|16.6|C|F}}<ref name=eto>{{cite web|url=http://www.nafaa.org/ethanol.pdf|title=Ethanol MSDS|website=Nafaa.org|access-date=January 4, 2014|archive-date=June 17, 2019|archive-url=https://web.archive.org/web/20190617000059/http://www.nafaa.org/ethanol.pdf|url-status=usurped}}</ref>
|{{convert|363|C|F}}<ref name=eto/>
|-
|[[Coleman fuel]] (White Gas)
|{{convert|-4|C|F}}<ref name=colfuel>{{cite web|url=http://www.farnell.com/datasheets/1700915.pdf|title= Coleman Fuel MSDS|website=farnell.com/|access-date=November 3, 2019}}</ref>
|{{convert|215|C|F}}<ref name=colfuel/>
|-
|[[Petrol]] (gasoline)
|{{convert|-43|C|F}}<ref name=gasfp>{{cite web |url= http://www.engineeringtoolbox.com/flash-point-fuels-d_937.html|title= Flash Point — Fuels|website=Engineeringtoolbox.com|access-date=January 4, 2014}}</ref>
|{{convert|280|C|F}}<ref name=gasai>{{cite web |url= http://www.engineeringtoolbox.com/fuels-ignition-temperatures-d_171.html |title=Fuels and Chemicals — Autoignition Temperatures|website=Engineeringtoolbox.com |access-date=January 4, 2014}}</ref>
|-
|[[Diesel fuel|Diesel (2-D)]]
|>{{convert|52|C|F}}<ref name=gasfp/>
|{{convert|210|C|F}}<ref name=gasai/>
|-
|[[Jet fuel|Jet fuel (A/A-1)]]
|>{{convert|38|C|F}}
|{{convert|210|C|F}}
|-
|[[Kerosene]]
|>{{convert|38|C|F}}
|{{convert|210|C|F}}
|-
|[[Vegetable oil]] (canola)
|{{convert|327|C|F}}
|{{convert|424|C|F}}<ref>{{cite web| title = Auto-Ignition of Cooking Oils
| url = http://drum.lib.umd.edu/bitstream/handle/1903/11333/Buda_Ortins_ResearchPaper.pdf|website=Drum.lib.umd.edu| first = Krystyna|last=Buda-Ortins}}</ref>
|-
|[[Biodiesel]]
|>{{convert|130|C|F}}
|---
|}

[[Gasoline]] (petrol) is a fuel used in a [[spark-ignition engine]]. The fuel is mixed with air within its flammable limits and heated by compression and subject to [[Boyle's law]] above its flash point, then ignited by the [[spark plug]]. To ignite, the fuel must have a low flash point, but in order to avoid [[Engine knocking|preignition]] caused by residual heat in a hot combustion chamber, the fuel must have a high [[autoignition temperature]].

[[Diesel fuel]] flash points vary between {{convert|52|and|96|C|F}}. Diesel is suitable for use in a [[diesel engine|compression-ignition engine]]. Air is [[gas compressor|compressed]] until it heats above the [[autoignition temperature]] of the fuel, which is then injected as a high-pressure spray, keeping the fuel-air mix within flammable limits. A diesel-fueled engine has no ignition source (such as the spark plugs in a gasoline engine), so diesel fuel can have a high flash point, but must have a low autoignition temperature.

[[Jet fuel]] flash points also vary with the composition of the fuel. Both Jet A and Jet A-1 have flash points between {{convert|38|and|66|C|F}}, close to that of off-the-shelf kerosene. Yet both Jet B and JP-4 have flash points between {{convert|-23|and|-1|C|F}}.