[AT] OT BMEP - Ether -for George Part 1

[Gilbert Schwartz]

George; Got the photos today. Thank you a bunch. Do we owe you or H.L. 
anything for the trouble and effort?
Vera and Gil
----- Original Message ----- 
From: "George Willer" <gwill at toast.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Thursday, September 09, 2004 3:24 PM
Subject: Re: [AT] OT BMEP - Ether -for George Part 1


> Brice,
>
> Thanks for the response... I'm looking forward to part II
>
> I'm not educated enough (high school graduate) to know the proper units of
> measurement, but what I really want to know, and I'm sure many others 
> would
> like to know as well, is the maximum pressure that can be developed when
> ether is used by any method as a fuel.  PSI is a term we are more familiar
> with.  Armed with a solid number, we can then start a safety campaign to
> halt many unsafe practices... or dispel some old wives' tales.
>
> I've not been able to find useful information in my internet searches, but
> it may be because I've been using the wrong units.
>
> If we are comfortable with practices that are really a safety hazard and
> shouldn't be, I'd like to hear intelligent arguments to change our  minds.
> You may be just the person to find and provide that information.
>
> On the other hand, if we are discouraged from using useful aids because of
> superstition and unreasonable fear... I'd like to know that too.
>
> You have no idea how much I look forward to our annual lively discussions.
> I eagerly look forward to part II.  I'll follow the links provided to see
> what develops.
>
> George Willer
>
> The true test of character is not how much we know how to do, but how we
> behave when we don't know what to do.
> --------John Holt
>
>
> ----- Original Message ----- 
> From: <badams at alcor.astro.indiana.edu>
> To: "Antique tractor email discussion group" 
> <at at lists.antique-tractor.com>
> Sent: Thursday, September 09, 2004 12:48 PM
> Subject: [AT] OT BMEP - Ether -for George Part 1
>
>
>>   While I was innocently engaged in the production of shim stock at
>> Portland George Willer asked , "What is the BMEP of Ether?" I vaguely
>> remembered from a former life some tables with BMEP figures for
>> different grades of aviation gasoline so I stifled my first response of
>> "Wrong units" and told George I'd see what I could find.
>> I found:
>>
>> 1.Brake Mean Effective Pressure (BMEP)
>>     The work accomplished during one engine cycle divided by the engine
>>     swept volume. It is essentially the engine torque normalized by the
>>     engine displacement. The word ^Óbrake^Ô denotes the actual
>>     torque/power available at the engine flywheel as measured on a
>>     dynamometer. Thus, BMEP is a measure of the useful power output of
>>     the engine
>>
>> 2.ASTM test procedures for aviation fuels use BMEP extensively for
>> expressing operational characteristics.
>>
>> 3.BMEP is misused to express instantaneous cylinder pressure.
>>
>> 4. Some fascinating work is being done on diesel engines fueled with
>> dimethyl ether:
>>
>> http://www.portalenergy.com/balpyo/ectw16/08.pdf
>> http://www.mhi.co.jp/tech/pdf/e406/e406348.pdf
>>
>> I did not find a BMEP figure for dimethyl ether.
>> See part 2 for "the rest of the story".
>>
>> Brice
>>
>>
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>
>
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