[Diy_efi] water injectionzxzx detonation,,,

[Buck Williams]

detoantaon is direcctly related to "burn rate" and "pressure/time rise",,"flame front" these are the buzz words,,,, detaontation can occurrr in an engine way beya9ond our abilaity to begian to sense it on anyy human reall  time levell wiathout estensive instraumentatioan,i was goaing to tr;ay to descraibe it but with my straoke and typaiang,, i thain, many of u wold soodn becomer boredd and decide that i disnat know what i was sahing,, so i wold urge u to get a trrue undersstanding of ddetonation from google, or nayu other sourxce of knowlecddge, not one but many descraiptions , using theee abovee buzz words ten using those buzz words to look more,, but start with detonation and gasoline engines,,,,,, detonatiaon is equivalaent to trahying to turn and engine  by hitting the piston wiath a sledge hammer  to trun the crank,,, it will move the piston,, but at what cost to the paarts of the engine,,,,,detonation is slapping the piston with horendous pressuree at very short intervals,,,,, whereas burn is pushing the piston wilth lower pressures over longer periods of time, thereeeee is much moreee but i thaink it is beayond my ability to adequately descraive it here,,, buck

> From: bernie at innovative.iinet.net.au> To: diy_efi at diy-efi.org> Subject: Re: [Diy_efi] water injection> Date: Sat, 29 Sep 2007 17:15:25 +0800> > On Fri, 28 Sep 2007 08:06 pm, gary wrote:> > Ian, are you stating the noisy ringing of combustion due to> > excessive vibration must result in mechanical damage to be> > considered detonation?> > > There are various (3 ?) levels of detonation. In a gasoline engine> > the lowest level can continue for extended periods of time without> > doing any structural mechanical damage.> > It's not the machanical vibration that's the problem per se. It's> the rapid movement of gases above the piston to that strip away the> protective boundary layer, exposing the metal to the full heat of> combustion.> > The mechanical problems are secondary to a hole burning through the> top of the piston.> > That is why e.g. "light knock" is generally OK and a good way of> getting a bit more energy from the same amount of fuel.> > -- > /"\ Bernd Felsche - Innovative Reckoning, Perth, Western Australia> \ / ASCII ribbon campaign | The object of life is not to be on the side of > X against HTML mail | the majority but to escape finding oneself in> / \ and postings | the ranks of the insane. -- Marcus Aurelius> > > _______________________________________________> Diy_efi mailing list> Diy_efi at diy-efi.org> Subscribe: http://lists.diy-efi.org/mailman/listinfo/diy_efi> Main WWW page: http://www.diy-efi.org/diy_efi