Quote:
Originally Posted by stevey_frac
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Did you read the study closely? They added 20% hydrogen to the combustion mix. That is a HUGH amount of hydrogen. They also added pure 100% hydrogen. The typical home made HHO devices will, on a good day, generate 0.5 to 1.0 liter per minute of total gas. That's H2, O2 and H2O vapor. The hydrogen content of the device effluent stream is about 1/2 by volume with the remainder being the oxygen and heated water vapor. Do the math on an engine to see the volume needed to reach 20%.
A typical 2.0L 4 cyl engine on the freeway will run about 2000 rpm. (Makes the math easy) A 4 cycle engine will inhale once per 2 revolutions, so at 2000 rpm's that 1000 inhales. If you are at full throttle, it will inhale 2000 liters of air per minute. 20% of 2000 liters is 400 liters. So, to get the full benefit of hydrogen fumigation, you would need a system that could produce a variable volume of hydrogen up to 400 liters per minute for a 2.0 4 cyl engine. If you make a good "HHO" system it may make 1 liter of gas per minute with 10 amps supplied. (assume it's all H2). To reach the 400 liter of hydrogen the study called for you will need 4000 amps
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Think about this; How much lag time is there between the peddle getting pressed and the hydrogen being produced? Obviously, you need different amounts of hydrogen when the engine is idling at a stop light compared to accelerating when the light turns green, right? So you really need a system that can fumigate a small amount (5-10 liter hydrogen per minute) at idle then increase to 400 liter per minute as you hit the accelerator without a lag. Then you need the system to be able to stop the fumigation when you let up the peddle (or the engine will continue to rev as you try to coast or stop!!
).
The aspect of matching the volume of hydrogen to the engine throttle opening / rpm / fuel flow is never discussed on the sites that sell the systems. Ever wonder why?