pining,twin plugging,etc...

Dave Balfour balfour at bushnell.net
Wed Mar 11 20:42:02 GMT 1998


Fairbanks Morse in Beloit Wisconsin makes Opposed Piston 2 stroke
Diesels... 8.125 bore and 12 inch stroke. 9 and 12 cylinder. They are
used for generators and run at i think 720 rpm.
-----Original Message-----
From: Jim Davies <jimd at vcc.bc.ca>
To: diy_efi at efi332.eng.ohio-state.edu
<diy_efi at efi332.eng.ohio-state.edu>
Date: Wednesday, March 11, 1998 10:10 AM
Subject: Re: pining,twin plugging,etc...


>
>
>On Wed, 11 Mar 1998, Matthew B. Watts wrote:
>
>> > I was talking to my mate who has been working on engines
>> > for about 30 years now, he told me about an 8 piston desiel
>> > engine with 4 cylinder bores and two crankshafts.
>> >The two pistons opposed each other and on the compression
>> > stroke would move towards each other causing a masive
>> > compression which would ignite the desiel and force the two
>> > apart.  It worked very well but was unreliable due to the fact
>> > that it had so many rotating parts...
>> >
>Junkers had a series of Diesels of this type for aircraft in the 30s
and
>40s. At one time the possibility of high octane gas seemed pretty
remote,
>so there was a lot of development done on aero-diesel engines. The
junkers
>was hardly unreliable. In the end, they were able to get 1 HP for 2
lbs
>engine weight, not enough to compete with the 1 lb/ HP of gas
engines with
>100/130 fuel.
>
>Jim Davies
>
>




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