water into efi system before injectors.

[Bernd Felsche]

Greg Hermann writes:

>>Greg Hermann writes:
>>>>so, without getting  into details, a normally aspirated high compression
>>>>motor could use this to prevent knock by lowering combustion temperatures.
>>>>Now could this be knock sensor triggered? would the H2O anti knock rob
>>>>more.or less. power than retarding the spark? (rough numbers).
>>
>>>Water injection won't rob any power if you keep the water quantity from
>>>going too high.

>>As to determining how much water can be injected, one could consult
>>steam tables, etc and determine from the amount of energy, the
>>maximum amount of water which can be evaporated during compression.
>>You get a small margin of "safety" due to the heat stored in the
>>walls of the combustion chamber from the previous cycle. Don't rely
>>on it too much or the thermal cycling could become a problem.

>This is precisely how I did the calculation that led to the 75--80% of fuel
>mass flow rate (at stoich) for a maximum water mass flow rate.

Oh good.

I was thinking that I had become a complete loser. :-)

-- 
Real Name: Bernd Felsche
    Email: nospam.bernie at perth.DIALix.com.au
     http://www.perth.dialix.com.au/~bernie - Private HP
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