[Diy_efi] injector advance

[Greg Hermann]

At 8:59 PM 8/7/04, Tomas J. Sokorai Sch. wrote:
>On Saturday 07 August 2004 18:21, frederic wrote:
>>
>> The nifty thing about alcohol, is it burns.  Water, does not.  So the
>> obvious advantage to injecting alcohol instead of water, is you enjoy the
>> cooling properties while having opportunity to burn darn near everything
>> that goes into the combustion chamber.
>
>yeap! more so with the added benefit of the OH part of the alcohol molecules,
>that adds a little extra oxygen to the combustion process.
>And the alcohol has a much less detonation tendencies compared to the
>gasoline.
>
>Water/alky injection was used very sucessfully on boosted engines on WWII,
>like the Rolls Merlin engine.

Not to mention the larger Griffon, and MANY others---

Alky and H2O BOTH have good effects. The H2O is a more effective internal
coolant than the alky (about twice the latent heat of vap of methanol and
triple ethanol), but also catalyzes and stabilizes the combustion in
several ways.

The water definitely dissociates and then re-associates during the
combustion process.

Greg


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