Quote:
Originally Posted by mort
If the paper is to be believed, the addition of 1.5 lb/hr of hydrogen improved efficiency from 21.95% to 22.78% (bhp/fuel hp)
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680 grams of H2 has a lot of energy, with a specific energy of 142 MJ/kg (gas and diesel are around 47 and 45 MJ/kg respectively - lower when ethanol or biodiesel is added)
Essentially, what the study suggests adding in H2, is the energy equivalent of 4.5 lbs or about 2kg/h of fuel .
That's more than half the fuel my car uses ...
If it makes more NOx because of the higher combustion temperatures, it's not a solution, but a problem.