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Detroit 353 diesel -- aluminum block? How to tell?
On Mon, 27 Aug 2007 08:04:59 -0400, Wayne.B
wrote: On Sun, 26 Aug 2007 16:35:02 +0700, wrote: Early on (1920) Fairbanks-Morse mad at least one 15 HP semi diesel that used the crankcase to pressurize air for the 2 stroke engine The engine lubrication was by a mechanical oil pressure pump pumping oil to the two main bearing shells and to the cylinder. I assume the lube oil got burned, or was it reclaimed in some way? From looking at pictures and drawings the engine was constructed much like any other horizontal engine of the same era except that the "crank case" was closed on all sides. The main bearings were simple babbeted bearings with caps lubricated by an external lube pump connected through external "oil pipes". A third oil line ran to the cylinder and I assume that some of the oil that lubricated the piston dripped down on the horizontal connecting rod and flowed back to lubricate the connecting rod ends. The manual refers to a "oil tube" on the connecting rod connected to the big end. The oil pump was a cam operated devise as the manual discusses "giving the oil pump several pumps prior to starting the engine". So essentially the engine had a constant loss lubrication system which was not unusual in that era. I have seen other horizontal semi diesel engines of the same eras that had oil cups or drip oilers on both main and connecting rods. Bruce in Bangkok (brucepaigeATgmailDOTcom) |
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