gas/glow plugs
I've been reading about rc aircraft engines that use gasoline in a glow engine. How does a glow plug ignite gasoline? Gasoline, as I have heard requires a spark to ignite, and a spark would be much hotter than a glow plug. A filiment and would have a much lower temperature than a spark so how does it ignite gasoline? Is the compression in these engines much higher than normal? Can this gas glow plug be used in any engine?