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Old 20-12-2012, 05:10 PM   #1
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The future of inboard engines maybe?
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Old 20-12-2012, 05:19 PM   #2
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Old 20-12-2012, 08:10 PM   #3
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I cant figure out where the centre low pressure cyl exhausts, is it by a valve that the cutaway doesnt show or is it like a two stroke exhaust port?

Interesting though!
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Old 20-12-2012, 08:24 PM   #4
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Quote:
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I cant figure out where the centre low pressure cyl exhausts, is it by a valve that the cutaway doesnt show or is it like a two stroke exhaust port?

Interesting though!
I really dont understand either, it looks like a form of forced induced scavenging??? if there is such a thing.

but could be the shape of things to come?
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Old 21-12-2012, 12:38 AM   #5
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a form of forced induced scavenging??? if there is such a thing.

but could be the shape of things to come?
The 'Detroit Diesel' is a supercharged two stroke (forced scavenge) old as the hills.
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Old 21-12-2012, 12:54 AM   #6
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i understand the concept for 2 strokes but odd on.... well i want to put 4cycle but also didnt know if there was such a term as forced scavenging or what ever its called. interesting that its from one cylinder to another.

what do you reckon? the shape of things to come?
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Old 21-12-2012, 12:47 PM   #7
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The 'Detroit Diesel' is a supercharged two stroke (forced scavenge) old as the hills.
There were a few British trucks that ran Scavenge pumps (,blowers ) commer light truck for one used the wade ro34 , you could convert them to run on petrol motors but had to have steel shafts fitted to the rotars or the would just destroy themselfs when spun too fast . i put both ro34 and ro20 on ford 3 liter motors for cars and boats in the 80s .
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Old 21-12-2012, 01:14 PM   #8
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but that is compressing air isnt it? the bit i cant quite grasp on this is one piston pushing a charge into the next cylinder via timed valves. where as turbos and chargees just pressurise the inlet side of things?
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Old 21-12-2012, 01:21 PM   #9
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Right i actually understand it now! the expansion is the key! anyway just when you worked that out!!!!!!

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Old 21-12-2012, 08:15 PM   #10
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Its the same principle as a two stage steam engine,where to steam pressure is used twice, high and low pressure. The low pressure cylinders are a bigger diameter, to the high pressure ones and the reason for that is you don't need as much pressure as it is working on a larger cross sectional area. Or something like that anyway, its looks a good idea though.
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Old 21-12-2012, 10:57 PM   #11
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yeah i understand now. using the expanding exhaust gasses
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Old 22-12-2012, 10:14 AM   #12
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Steam engine tech, it's a compound engine
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