Archived posting to the Leica Users Group, 2007/11/16

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Subject: [Leica] Fuel consumption when accelerating - was Prius (OT)
From: jhnichols at bellsouth.net (Jim Nichols)
Date: Fri Nov 16 21:54:52 2007
References: <217815.92650.qm@web57906.mail.re3.yahoo.com><013f01c828c4$f6e6efd0$6101a8c0@jimnichols> <4cfa589b0711162124m25bf0ac4lf23d0ab2d2db60b@mail.gmail.com>

Adam,

Yeeeaaah!  216,000HP on the fan shaft when I was there, has now been 
upgraded, but I can't recall the numbers.

Jim Nichols
Tullahoma, TN USA
----- Original Message ----- 
From: "Adam Bridge" <abridge@gmail.com>
To: "Leica Users Group" <lug@leica-users.org>
Sent: Friday, November 16, 2007 11:24 PM
Subject: Re: [Leica] Fuel consumption when accelerating - was Prius (OT)


> Ahhhhhhhhh....... a self-admitted big blow hard! :)
>
> Adam
>
> On Nov 16, 2007 6:52 PM, Jim Nichols <jhnichols@bellsouth.net> wrote:
>>
>> Jacques,
>>
>> Thanks for the response, but you are "preaching to the choir". I worked 
>> in
>> the wind tunnel business for forty years.
>>
>> Jim Nichols
>> Tullahoma, TN USA
>>
>> ----- Original Message -----
>> From: "jacques bilinski" <jacques_bilinski@yahoo.com>
>> To: "Leica Users Group" <lug@leica-users.org>
>> Sent: Friday, November 16, 2007 7:08 PM
>> Subject: [Leica] Fuel consumption when accelerating - was Prius (OT)
>>
>>
>> >>>>>
>> >  I have to agree about the fascination with the MPG readout.  I 
>> > recently
>> > bought a 2007 Volvo V70 which has that readout available, and I find
>> > myself
>> > consulting it frequently, which takes me away from looking through the
>> > windshield. I use it, mainly, to see the negative affect of rapid
>> > acceleration.
>> >  <<<<
>> >  A low instantanous fuel consumpiton when accelerating is not as bad as 
>> > it
>> > seems because kinetic enery is being added to the car which will be 
>> > used
>> > to propel it later. In fact competitive fuel consumpion drivers use a
>> > method called 'pulse and glide' in which they accelerate fairly rapidly
>> > and then shut off the engine and coast for a while. Internal combusion
>> > engines are most efficent at fairly high power outputs. The reason fast
>> > driving results in higher fuel consumption is primarily because of air
>> > resistance. At some speeds the Prius will cycle its engine on and off
>> > which improves cosumption, despite all the losses of converting the 
>> > energy
>> > to electricty, to chemical energy in the battery, back to electrical
>> > energy, and then to kinetic energy.
>> >
>> >
>> > ---------------------------------
>> > Be smarter than spam. See how smart SpamGuard is at giving junk email 
>> > the
>> > boot with the All-new Yahoo! Mail
>> >
>> > _______________________________________________
>> > Leica Users Group.
>> > See http://leica-users.org/mailman/listinfo/lug for more information
>> >
>>
>>
>>
>> _______________________________________________
>> Leica Users Group.
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>>
>
> _______________________________________________
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> 



In reply to: Message from jacques_bilinski at yahoo.com (jacques bilinski) ([Leica] Fuel consumption when accelerating - was Prius (OT))
Message from jhnichols at bellsouth.net (Jim Nichols) ([Leica] Fuel consumption when accelerating - was Prius (OT))
Message from abridge at gmail.com (Adam Bridge) ([Leica] Fuel consumption when accelerating - was Prius (OT))