What are the challenges for making an engine that does real work?

Discussion on Stirling or "hot air" engines (all types)
cbstirling2
Posts: 154
Joined: Sat Dec 17, 2016 9:35 pm

Re: What are the challenges for making an engine that does real work?

Post by cbstirling2 » Tue Jan 03, 2017 5:38 pm

If one used a magnetic clutch, one could completely enclose the stirling engine with the only seal being the Schrader valve.
The benefit here being good being no seals against a moving shaft, so that be very simple I would suspect.
Has anyone tried this?

Looks like someone patented the idea back in 1996:
https://www.google.com/patents/EP0918924A1?cl=en
CBStirling2

Aviator168
Posts: 308
Joined: Tue Feb 08, 2011 2:29 pm
Location: Brokeville, NY. USA

Re: What are the challenges for making an engine that does real work?

Post by Aviator168 » Tue Jan 03, 2017 8:40 pm

Magnetic couplers are nice. But the designer has to make compromise between weight and torque.

Ian S C
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Joined: Thu Dec 02, 2010 5:15 am
Location: New Zealand

Re: What are the challenges for making an engine that does real work?

Post by Ian S C » Wed Jan 04, 2017 1:17 am

I think Andy Ross mentioned a magnetic coupling he tried on one of his motors in "Making Stirling Engines".
Ian S C

Aviator168
Posts: 308
Joined: Tue Feb 08, 2011 2:29 pm
Location: Brokeville, NY. USA

Re: What are the challenges for making an engine that does real work?

Post by Aviator168 » Wed Jan 04, 2017 7:18 am

Yes. He did with his 230w engine. Magnetic coupling can also transmit high power through a thick "semi" magnetic medium; but not the way he did it.

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