Is this revolutionary engine not a boxer?

[RSVX]

New Engine

Is this not a boxer? I wont pretend to know jack about engines, but this feels very boxer to me.

Enlighten me.

[StatGSR]

no, it's an Opposed Piston Opposed Combustion Engine aka OPOC

a boxer aka flat is just a Horizontally-Opposed engine

[Crazy_pilot]

This should help clear things up. It looks like a boxer motor, but has 2 pistons in each cylinder. Nifty design.

[benebob]

Now what are the advantages to such an engine other than being able to stick it in a poster box for shipping.

I'm guessing that it could have a greater combustion ratio which would be more apt to be used with a high octane/low btu fuel such as compressed gas with good results. Seems to me that it would be tough to lube the outer piston properly with a conventional oil pump set up. Is it a 2 stroke? Not seeing any valves in there?

[ZMan]

This video explains it a little better.

http://ecomotors.com/videos/introduc...%A2-powertrain

[TomsSVX]

Originally Posted by benebob

Now what are the advantages to such an engine other than being able to stick it in a poster box for shipping.

I'm guessing that it could have a greater combustion ratio which would be more apt to be used with a high octane/low btu fuel such as compressed gas with good results. Seems to me that it would be tough to lube the outer piston properly with a conventional oil pump set up. Is it a 2 stroke? Not seeing any valves in there?

I would imagine that the outer cylinders along with the inner are injected with oil by one of two means, Either the connecting rods are jetted with an oil supply tube, fed off the crankshaft to distribute to the piston pin light the Detroit Diesels did in their 2 stroke days, or there are oil jets at the bottom of the stroke which literally inject the bottom of the piston with oil into a channel which is the carried up the stroke and by means of inertia pressed against the piston on combustion and pressed out the side of the skirt to lube the cylinder walls... Either of these methods would be ideal but the earlier of the two seems to be the better bet as it is more efficient and reliable.

The variable vane turbo is nothing new though, it has been used for years with great success... Nearly eliminates turbo lag and broadens the turbo's efficiency range by 3-4 times that of a gated turbo.... Why they have not been putting these into gas engines for the past 5-10 years is beyond me.

I do love it though, just going to be a ***** to find an engine bay wide enough to pack it in unless it really is a small bore engine and my proportions are off

Tom

[oab_au]

It looks like an updated Junkers or Commer knocker, opposed piston two stroke, with phased pistons for port timing.
They have replaced the outer piston rocker links, with extra con rods, to put the crank on the same line as the pistons, where as the Commer Knocker had the crank under the piston line.
This design of phasing the pistons to open the exhaust, before opening the inlets, and closing the exhaust ports before the inlets, provide a clean blow through savaging, and good pressure charging.

Harvey.

[NikFu S.]

It sounds very promising.

http://www.independent.co.uk/life-st...t-2025615.html

[RSVX]

Originally Posted by StatGSR

no, it's an Opposed Piston Opposed Combustion Engine aka OPOC

a boxer aka flat is just a Horizontally-Opposed engine

I read that much in th article, and it didn't mean anything to me then, hence the thread!

Originally Posted by Crazy_pilot

This should help clear things up. It looks like a boxer motor, but has 2 pistons in each cylinder. Nifty design.

Originally Posted by ZMan

This video explains it a little better.

http://ecomotors.com/videos/introduc...%A2-powertrain

Perfect, thanks!

[subbieatnz]

Richard Pearse New Zealands 1st aviator ( also flew 9 months before the wright brothers did )
His engine was of unusual Horzontially/Opposed Piston design.
It was a double acting Opposed piston twin cylinder. It was based on steam engine cylinder principles. Due to being very little info drawings or even actual fuel powered engines availble to look at.. (There were only 2 other petrol engined Automobles In the south island -Aprox 1899 )
It had about 15hp. Had an exposed crank you would have to grease.
Could only run it for a little while at a time.

[Nevin]

Seems to be a very promising design.

I would love to hear one run.