Hi Folks, this sounds interesting

http://www.motoring.com.au/news/2013/aussie-invention-eliminates-piston-rings-40773?WT.z_csource=Outbrain&WT.seg_4=Outbrain

bob(from black rock) said:

Hi Folks, this sounds interesting

http://www.motoring.com.au/news/2013/aussie-invention-eliminates-piston-rings-40773?WT.z_csource=Outbrain&WT.seg_4=Outbrain

Looks interesting bob.

I was surprised to read:

“Dynex has brought the technology to the proof-of-concept phase, in which virtual modelling of the “air-sealing” principle looks promising enough to get to work on the real thing.”

I would have thought that they might have made a physical prototype by this point in the development process.

morrie said:

bob(from black rock) said:

Hi Folks, this sounds interesting

http://www.motoring.com.au/news/2013/aussie-invention-eliminates-piston-rings-40773?WT.z_csource=Outbrain&WT.seg_4=Outbrain

Looks interesting bob.

I was surprised to read:

“Dynex has brought the technology to the proof-of-concept phase, in which virtual modelling of the “air-sealing” principle looks promising enough to get to work on the real thing.”

I would have thought that they might have made a physical prototype by this point in the development process.

.
Yeah me too morrie, perhaps they are trying to improve the “virtual modelling” process

Interesting – If they call this ‘horizontally opposed’, what do they call the horizontal engines where both pistons run in the same bore (in opposite directions)?

This one for example, which also claims to be running without piston rings.

Smaller engines regulary do without rings, snug fitting piston.

One thing of snug fitting pistons is they do transfer heat to the cylinder wall.

Is the Aussie Sarich Engine finished yet?

Peak Warming Man said:

Is the Aussie Sarich Engine finished yet?

.
Do you mean completed? or scrapped?

bob(from black rock) said:

Hi Folks, this sounds interesting

http://www.motoring.com.au/news/2013/aussie-invention-eliminates-piston-rings-40773?WT.z_csource=Outbrain&WT.seg_4=Outbrain

Not all that impressed sorry.
It might work okay in some applications but I doubt it’ll ever be used in regular car & truck engines. The reason being that whilst it may be half reasonable at sealing against airflow, it’s not so good with oil and the pistons need oil for cooling and to lubricate the gudgeon pin & bores.

Peak Warming Man said:

Is the Aussie Sarich Engine finished yet?

I visited the Orbital Engine Co site in the early 90s. It was running on a skeleton staff at that stage. They had some very impressive test and prototyping facilities though and an enormous number of patents in the general area of engine technology. They still seem to be operating as Orbital Corporation. The orbital engine itself never seems to have made it into the real world.

morrie said:

Peak Warming Man said:

Is the Aussie Sarich Engine finished yet?

I visited the Orbital Engine Co site in the early 90s. It was running on a skeleton staff at that stage. They had some very impressive test and prototyping facilities though and an enormous number of patents in the general area of engine technology. They still seem to be operating as Orbital Corporation. The orbital engine itself never seems to have made it into the real world.

The Orbital engine never made it, but some of the the tech has. The Direct Injection tech is being sold round the world. Marine engines are also drawing on Orbital Co tech.

Stealth said:

morrie said:

Peak Warming Man said:

Is the Aussie Sarich Engine finished yet?

I visited the Orbital Engine Co site in the early 90s. It was running on a skeleton staff at that stage. They had some very impressive test and prototyping facilities though and an enormous number of patents in the general area of engine technology. They still seem to be operating as Orbital Corporation. The orbital engine itself never seems to have made it into the real world.

The Orbital engine never made it, but some of the the tech has. The Direct Injection tech is being sold round the world. Marine engines are also drawing on Orbital Co tech.

The orbital engine was quietly shut down by the large oil companys in cohoots with General Motors and the CIA.
Nothing could be more obvious.

funny how the ‘ancient’ reciprocating piston engine ended up be such a practical design. rings and all.