[Diy_efi] water injection

[James Panter]

This whole discussion is very subjective.  "Audible detonation" depends on 
how good your hearing is and this is very critical
Also what is the ambient noise level around the engine------cabin 
insulation, exhaust silencing, etch.   I no longer have the same ability to 
hear certain frequencies that I once did.  I thought one time that it was 
only the higher notes but certain other sounds like detonation I also no 
longer hear as well.  If you depend on hearing it you could be in for a rude 
surprise.   I supose a warning light could be rigged to go on at a certain 
level------wouldn't that be a good thing?
----- Original Message ----- 
From: "Adam Wade" <espresso_doppio at yahoo.com>
To: <diy_efi at diy-efi.org>
Sent: Friday, September 28, 2007 1:07 AM
Subject: Re: [Diy_efi] water injection


> ----- Original Message ----- 
> From: "ian" <spyro at f2s.com>
> To: <diy_efi at diy-efi.org>
> Sent: Thursday, September 06, 2007 6:35 AM
> Subject: RE: [Diy_efi] water injection
>
>
>> no. compression ignition doesnt imply knock. in fact, a diesel will
>> have
>> a nice, constant burn as fuel is injected.
>
> The Internal Combustion Engine in Theory and Practice, by Charles
> Fayette Taylor:  Volume 2: Combustion, Fuels, Materials, Design.  pg.
> 95:
>
> "In practice, most diesel engines have a rate of pressure rise
> sufficiently high to cause audible noise.  When such a noise becomes
> excessive in the opinion of the observer, the engine is said to
> 'detonate' or 'knock'.  It is evident that personal judgment is here
> involved.  Thus, in the compression-ignition engine there is no
> definite distinction between normal and 'knocking' combustion.  It is
> merely a question of whether or not the rate of pressure rise is high
> enough to cause, in someone's judgment, objectionable noise or
> excessive vibration in the engine's structure."
>
>> My engine is turbo'd. cooling the air will result in a denser air
>> charge, and thus more power under boost.
>
> A diesel will only make more power under boost when all of the
> available incoming air is used in combustion, i.e. at a very high
> power level.  In a street-driven vehicle, I would expect more power to
> be forthcoming from a diesel only when the pedal is mashed to the
> floor, and possibly not even that depending on road speed and gear
> selection.
>
> |    Kawasaki Zephyr 615 (Daphne)     1985 RX-7 GSL-SE (Rex)    |
> | "It was like an emergency ward after a great catastrophe; it  |
> |    didn't matter what race or class the victims belonged to.  |
> |  They were all given the same miracle drug, which was coffee. |
> |   The catastrophe in this case, of course, was that the sun   |
> |               had come up again." -Kurt Vonnegut              |
> |  Motorcycle Fuel Injection Hndbk. - http://tinyurl.com/2v5o97 |
>
>
>
>
> 
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