Effectively all the fuel that it burns while idling. You are getting 0 miles per gallon while idling.
There can be many reasons why a car surges while idling. Some of these reasons are the computer could be dying, or the fuel injector are giving the engine too much gas.
that depends on size of engine
Fire does not burn, its whatever if fueling the fire that burns. For example, wood is a fuel that burns, and fire is the result. The speed at which a fuel burns, depends on the fuel. i.e. Wood burns much slower than gasoline.
4.7 liter per/hour
it idles quickly to save as much fuel, energy, oil, etc. as possible
Too high of an idle could be producing too much fuel for your jets to work with
It varies from zero (idling) to a max of 38 % ... but the average is about 20 %.
this depends on the rate at which your car burns fuel
too much fuel (unburned) getting into the exhaust. could be your oxygen sensor or catalyst converter. less likely, a leaking fuel injector
well the diesel get alittle bit more mpg but not much but the diesel burns cleaner the regular fuel
This will depend on how hard you are using it. If the machine is idling, it is not going to use as much as when you are using it full steam.