79jasper
Chickenhawk
Good ol google:
Fuel or Chemical Autoignition Temperature
(oC) (oF)
Acetaldehyde 175 347
Acetone 465 869
Acetylene 305 581
Anthracite - glow point 600 1112
Benzene 560 1040
Bituminous coal - glow point 454 850
Butane 405 761
Carbon 700 1292
Carbon bisulfide 149 300
Carbon disulfide 90 194
Carbon monoxide 609 1128
Charcoal 349 660
Coal-tar oil 580 1076
Coke 700 1292
Cyclohexane 245 473
Diethyl ether 160 320
Diesel, Jet A-1 210 410
Ethane 515 959
Ethylene 490 914
Ethyl Alcohol, Ethanol 365 689
Fuel Oil No.1 210 410
Fuel Oil No.2 256 494
Fuel Oil No.4 262 505
Heavy hydrocarbons 750 1382
Hydrogen 500 932
Gas oil 336 637
Gasoline, Petrol 280 536
Gun Cotton 221 430
Kerosene 295 563
Isobutane 462 864
Isobutene 465 869
Isooctane 447 837
Isopentane 420 788
Isopropyl Alcohol 399 750
Light gas 600 1112
Light hydrocarbons 650 1202
Lignite - glow point 526 979
Magnesium 473 883
Methane (Natural Gas) 580 1076
Methanol, Methyl Alcohol 470 878
Naphtha 550 1022
Neoheaxane 425 797
Neopentane 450 842
Nitro-glycerine 254 490
n-Butane 405 761
n-Heptane 215 419
n-Hexane 225 437
n-Octane 220 428
n-Pentane 260 500
n-Pentene 298 569
Oak Wood - dry 482 900
Paper 450 761
Peat 227 440
Petroleum 400 752
Pine Wood - dry 427 800
Phosphorus, amorphous 260 500
Phosphorus, transparent 49 120
Phosphorus, white 34 93
Production gas 750 1382
Propane 470 878
Propylene 458 856
p-Xylene 530 986
Rifle Powder 288 550
Triethylborane -20 -4
Toluene 535 995
Semi anthracite coal 400 752
Semi bituminous coal - glow point 527 980
Silane < 21 < 70
Styrene 490 914
Sulphur 243 470
Wood 300 572
Xylene 463 867
I wander what "coke" that is referring to?
But if someone was running water injection, shouldn't that keep anything in the precup or cylinder from igniting it early?