Thread: Hydrogen as fuel View Single Post
09-07-2012, 03:39 PM   #46
nongeekywebdude
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Quote:
 Originally Posted by pi3141 Maybe this will help Consider a 1 litre 2 stroke engine. Air fuel mixtures for combustion engines should be 14.7% (call it 15% for easier maths) At 1000rpm there are 500 intake strokes. 2 strokes make 1 revolution. Thus we need to supply 15% of 500 litres per min =75 litres per min. 14V HHO cells typically comsume 15 amps to produce 1 litre of fuel per min. 30 amps for 2 litres. (1 cell) You would need 38 HHO cells all drawing 30 amps and producing 2 litres per min to power a 1 litre 2 stroke at 1000rpm Consider a 2 litre 4 stroke. (I'm having trouble getting my head around this one but I think the following is correct.) Each cylinder = 500cc There is 1 intake stroke in the 4 stroke process So 1000rpm = 250 intake strokes of 0.5 litres per cylinder = 125 litres per min 15% of 125 litres = 18.75 litres per minute of fuel, per cylinder 4 Cylinders = 4 x 18.75 = 75 litres per minutre, per 1000 rpm Again, you would need 38 HHO cells drawing 30 amps and producing 2 litres per cell to fuel the car at 1000rpm 38 HHO cells x 30 amps = 1140 My Lotus redlines at 7000rpm. Therefore to fuel it to max power I would need 7 x 38 HHO cells = 266 HHO cells 7 x 1140 amps = 7980 amps You can buy batteries with 220aH ratings. You would need 37 batteries to power the system for 1 hour! Batteries of those capacities weigh 25Kgs = 925Kgs!
I dont get those figures above at all - are you saying a 1 litre 2 stroke engine needs 75 litres per min of fuel and a a 2 litre 4 stroke needs 125 litres per min? Thats 25 gallons of fuel per minute - what sort of engine is that, formula one?