Dictionary.com defines ignited, inside an ignited. It's the energy is being This has been pushed to the ridiculous extreme. Lets take it further, Grain is an explosive. If it wasn't how could there be grain elevator explosions? Gasoline is a flammable substance, add a little compression, or restrict the exhaust of fumes and heat and yes it will explode. Dump five gallons on the ground wait a few seconds and toss a match at it, big whoosh, big flames, no boom. Too many damn movies showing vehicles "exploding" every time they catch on fire. Most any flammable substance will explode under the right conditions. Hell I've seen pine trees explode in a fire, does that mean wood is an explosive? Fuel does not "explode" in a cylinder, it burns very fast, in a controlled manner, the expanding gbuttes pushing the piston down creating the ability to do work. In a gasoline engine the ignition is caused by a spark plug, in a diesel the air in the cylinder is compressed to a point that it becomes hot enough to ignite the diesel fuel when it is sprayed in the cylinder by the injector, That's why Diesels are Compression Ignition, not Compression detonation, nor compression explode. Detonation can occur in any engine, and when it does things break
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