Date: Tue, 29 Dec 1998 00:14:34 GMT From: djtcznopsamanet.com (Dan Timberlake) Subject: Re: Turbocharged Engine pings under boost
On 26 Dec 1998 05:15:38 GMT, "ALEX MAGDALENO" <ENG42nopsamdnet.att.net> wrote: > > >>end and add water injection. Water, up to 50% of fuel flow greatly reduces >detonation. >50%?? That seems like an awful lot of water. I would bet it would be more >like 5%. >Alex M > Look at any version of "Turbocharging" by Hugh MacInnes, after 2nd addition. Well controlled tests early in the century by a fellow named Harry Ricardo were able to control detonation (not preignition!!) by richening the mixture as much as 60% over stoichometric. By using water injection he was able to lean the fuel mixture back to best fuel economy. "It will be noted that the total specific consumption of liquid, . i.e. fuel plus water, is not so very much greater than when running on a very rich mixture of fuel alone."
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