Circle Cycle engine (new type of car engine. Darndest thing I have seen in awhile)

circlecycleice.com via Popular Science ad. ^ | 2012 | Circle cycle

[dynachrome]

What is it?

Orbital,non-reciprocating internal combustion engine. Piston/Cylinder structured Adaptable to all liquid or gaseous fuels Ultra efficient Patent # 7721687B1; & Patents Pending

[Red Badger]

Diesel Knock!................

[exnavy]

bump

[Tony in Hawaii]

I’ve always been partial to the 440, a bit lighter than the Hemi and all that lovely, lovely torque.

[MSF BU]

Interesting take; where does the 225 slant six rank on that scale?

[ecomcon]

Don’t feel all alone, I had a 72 and loved it. The aluminum block 4 lasted 120k then in went a 283 and a 5 speed.

[ecomcon]

It is interesting. I didn't see any specific efficiency claims other than general assertions of much less frictional losses.

Although the geometry of the piston and cylinder relationship implies negligible piston to cylinder contact, it seems like the piston will still load the cylinder vertically as it reacts against the gear, because the piston is mounted on an axle.

Intuitively, there is no way that piston entering the cylinder sealing ring at speed will survive for long. Everything depends on perfect and very strong gear teeth for piston/cylinder alignment. Power, inertial, and combustion loads dictate a very narrow speed range to tune in the piston/cylinder alignment.

The good: No valve train, although mention is made of intake and exhaust control. It has a blower ;>) Awesome dwell time at combustion, awesome scavenging, as it appears the backside of the cylinder can be used to that effect. It seems that the cycle has been stretched out time wise. It is essentially air cooled. It is a very low speed design, which helps. Perhaps increased efficiency comes from the slowed down (or lengthened?) cycle.

I'm not entirely convinced the video is showing it running on propane. Doesn't seem to be much combusting going on. Sounds like it's running on compressed air. How can it run without the blower and air management covers? I picture cool air coming in under pressure on one side, filling cylinders and evacuating exhaust on its way out the other.

[Batrachian]

I'm not really sure. The Slant 6 had it's day as an economy engine, but no one’s heart will flutter thinking about it. Wouldn't you rather have a 340?

[MSF BU]

The slant six just ran forever. I remember one morning that was so cold the only car that started was my Plymouth Scamp; ran like a champ, no problem.

[patriotUSA]

We should drill drill drill and then bring back the 426 Hemi when gas goes back to $.28 a gal. vroom vroom

Happy Rain for President!!