Thread: Hydrogen as fuel View Single Post
12-07-2012, 09:45 AM   #58
nongeekywebdude
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Quote:
 Originally Posted by pi3141 I know, that would completely fill the cylinder with petrol. We are talking 1 litre volume of air mixed with 15% litre volume of gas. In fact in my 2.2l Lotus as has been pointed out, each cylinder, by volume is equal to 0.5 litre. So when the piston goes up and down, it draws in, by volume, 0.5 litre of air of which 15% is HHO gas. Then it compresses it and fires it. But there is little doubt, each cylinder is pumping 0.5 litres volume of air on each stroke of which 15% is HHO gas or LPG Vapour or droplets of petrol from an injector or carb. It is shifting hundreds of litres of air and gas per min.
There is doubt! if your logic is correct both examples below would result in exactly the same fuel consumption as it is the same size engine at the same rpm

a) you are driving your 2.2litre car on a flat road at 3000rpm and barely depressing the accelerator, just cruising along a high speed,

b)you are driving your 2.2litre car up a steep hill at 3000rpm and have your foot almost pressed to the floor to maintain the speed

obviously this is not true, in the second example you would be using much, much more fuel (by several orders of magnitude), even though the engine bore and stroke is the same and the rpm is the same - the amount of fuel injected into the engine is NOT directly proportional to rpm or bore&stroke (cc). The fuel injection system will inject the fuel/air mix required and this will vary tremendously depending on load and throttle use

If your assumptions were correct, there would be no need for fancy computer fuel injection systems, as every stroke gets the same amount of fuel and air anyway, why bother?