Thread: Interesting, Odd or Funny Pics II.

Originally Posted by superquag

An engine older than most of us...

Amazing Steam Powered Ship Virginia V - YouTube

That's Interesting. A three cylinder compound, instead of triple expansion. Although South Steyne has a four cylinder triple expansion with two LPs. They did some wonderful things in the olden days.

Originally Posted by cuppabillytea

That's Interesting. A three cylinder compound, instead of triple expansion. Although South Steyne has a four cylinder triple expansion with two LPs. They did some wonderful things in the olden days.

Yes, possibly the most fascinating being a few ship's engines built in the 1920s with diesel above the piston and steam below, with steam raised from the diesel exhaust. As a variation on this, a few also had a steam turbine geared to the prop shaft and again with steam provided from the diesel exhaust. As diesels improved, and especially as turbochargers became feasible, these elaborate fuel saving devices fell by the wayside. I doubt any still exist, even in museums.

Originally Posted by JDNSW

Yes, possibly the most fascinating being a few ship's engines built in the 1920s with diesel above the piston and steam below, with steam raised from the diesel exhaust. As a variation on this, a few also had a steam turbine geared to the prop shaft and again with steam provided from the diesel exhaust. As diesels improved, and especially as turbochargers became feasible, these elaborate fuel saving devices fell by the wayside. I doubt any still exist, even in museums.

Thanks for that John. I've never seen such an Engine. It's brilliant thinking though. I'll ask around and see if any still exist.

Originally Posted by cuppabillytea

Thanks for that John. I've never seen such an Engine. It's brilliant thinking though. I'll ask around and see if any still exist.

Were you round in the twenties? Bit before my time. I read about them in a history of marine engineering - which I have just spent ten minutes searching for, unsuccessfully!

Originally Posted by JDNSW

Were you round in the twenties? Bit before my time. I read about them in a history of marine engineering - which I have just spent ten minutes searching for, unsuccessfully!

No, it was well before my time too. If the non Diesel side ran off the Diesel exhaust, wouldn't that technically make it a Gas Engine?
Oh I get it now they ran the exhaust through a boiler to make the steam. Silly Billy. Still something I haven't seen, although I have seen examples if Steam Auxiliaries run this way.

Wikipedia mentions a combination steam and diesel locomotive engine, it starts on steam and runs mainly on diesel, it means the locomotive didn't need a transmission to get rolling.

Steam diesel hybrid locomotive - Wikipedia


https://en.wikipedia.org/wiki/Still_engine

http://www.douglas-self.com/MUSEUM/L...n/kitsonst.htm

Somewhere I came across an article about a Certain Barvarian Auto maker, which was looking into another weird way, using the petrol (?) engine exhaust to make steam, that would in turn be used in a parallel system to add drive to the Drivetrain. Not sure if it's a turbine or steam pistons.

Another funny one, by the Nipponese, is to pass the engine-turbo exhaust through a mechanically coupled 'turbo' (200 : 1 or so) to the flywheel . . .