advanced angine - suitable for marine use ?

[Bilgediver]

what if you turn it through 90degrees so the long axis runs fore and aft ?


OK, it then needs a right angle gearbox...

You both forget that the engine model in your boat will have multiple cylinders. Say 4..6..8..10 Need a wide MOBO or cat then to accomodate . Mind you with reduction it would drive paddles OK

 

[DownWest]

[
An engine that I thought was perfect for the boat was the Steyr Puch engine which was widely used by the militart (Haflinger?)

The Haflinger was a little boxer (opposed twin) similar to the Citroen 2CV ( I had two) So no relation.

Though it was used in an Arbathe(sp) version of the Fiat 500 that used to frighten Mini Coopers.

 

[DownWest]

You both forget that the engine model in your boat will have multiple cylinders. Say 4..6..8..10 Need a wide MOBO or cat then to accomodate . Mind you with reduction it would drive paddles OK

Yes, but at 300hp per basic pair, how much do you need?

 

[Rowana]

Haven't single crank-shaft, opposed piston marine engines been around for nearly100 years,
made by Doxford.

The Napier Deltic engine seems to use the same idea for port timing and has been in use for many years. Nice cut away engine at the York Railway museum if you are into that sort of thing

Doxford ( you get an idea of the size by the guy at the controls)

A B&W, also opposed piston

And a couple of pictures of a Napier Deltic. Note the 3 crankshafrs

Driven and worked on them all in my yoof!

 

[mersey]

You are correct, Commer used the TS3 (TS4 was mothballed) for about 15 years in their heavy commercials. It all seems a touch of smoke and mirrors to me or akin to reinventing the wheel.......It's strange that Commer was under the Rootes flag which then went to Chrysler who must still hold patents and they are an American company. What goes round comes round I suppose.

Unless they do some neat tricks with the fuel management, emmissions and noise control, I would not entertain two stroke diesel in anything that I would own. They where smelly, smokey and very noisy and from what I remember not fuel efficent at all.

Actually Chrysler Europe, which Rootes was part of was sold to Peugeot, and there was some partnership with Renault Trucks. I believe the rights to the TS3/4 are owned now by Renault.

 

[CharlesSwallow]

There have been all sorts or motors used over the years, except gasoline.

Chas

I correct myself: just googled a WW1 german torpedo with a gasoline engine and carb. IC engines were supplied with combustion air from a compressed air bottle.

Chas

 

[Deleted member 36384]

This engine does not operate like a Doxford. The bloke explains that the forces on each pair of pistons is always opposed and one set of connecting rods "pushes" while the other "pulls". He then explains that the common crankshaft does not have to support significant thrust loads. I guess it floats on its constraints. This is a neat idea and I expect that this would significantly reduce vibration. Like sarabande, I thought if it was to be used in a yacht then it would have to be mounted longitudinally and use a 90 degree gear box. However, it could be mounted on the vertical plane as well or even on a diagonal.

Interesting concept.

 

[DaveS]

Like sarabande, I thought if it was to be used in a yacht then it would have to be mounted longitudinally and use a 90 degree gear box. However, it could be mounted on the vertical plane as well or even on a diagonal.

Interesting concept.

Or perhaps with the cylinders mounted longtitudinally and the crankshaft vertical and connected to a saildrive leg...

 

[DownWest]

Or perhaps with the cylinders mounted longtitudinally and the crankshaft vertical and connected to a saildrive leg...

Yes, but were is the F-N-R box?

 

[DaveS]

Yes, but were is the F-N-R box?

Well, it's a 2 stroke, so it might be able to go in either direction, just like big marine 2 strokes. If so, no gearbox required!

If not, or you have a particular desire to run in neutral, then a conventional gearbox at the top of the leg.

 

[rudolph_hart]

Just another reconfiguration of the Roots TS3 and the BMW diesel aero engine before that.

and, of course, this one (Jumo. 6 cyl, 12 piston, 2-stroke diesel). If it fitted in a Junkers or Dornier, it should fit in a Centaur or Sadler 26 (if you removed the toilet, berths, galley etc), wouldn't it?