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Old 03-07-2012, 01:56 PM   #208 (permalink)
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Originally Posted by mort View Post
Also, after the GM 6.2 L there is another engine described on page 36 (27) 5.2 L two stroke turbo (Detroit Diesel?), tests on page 41 (32) (and page 122 or C-5 and 156 or D-6). Talk about flat bsfc - from 1800 rpm to 2800 rpm (190 hp to 260 hp) the bsfc goes from .36 to .34 to .38 (39% to 35% eff.)
That's the old DD 6V53 2-stroke (mostly in over-the-road 1960's semi tractors, GM/GMC Heavy Duty "Screamin' Jimmy" trucks/buses, and popular in hydraulic pump and power generators). These preceded the Series 71 and 92 applications, mostly used in transit buses, until emissions took them out of routine service in the late 90's. I do miss the sound, but not the smoke!

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