Wobble yoke engine anyone?

[aceparts_com]

www.whispertech.co.nz/main/wobbleyoke/

[chassis 33]

Looks a bit like a swage pump operation backwards, and a little unsure how they turn the linear motion of the pistons into a rotation ho hum.

I do like all these 'unconventional' engines. Anyone seen this version of the rotary vane engine www.regtech.com/

Regards
Iain

[annodomini2]

chassis 33 said:

Looks a bit like a swage pump operation backwards, and a little unsure how they turn the linear motion of the pistons into a rotation ho hum.

I agree, looks like a hydraulic piston pump running backwards.

chassis 33 said:

I do like all these 'unconventional' engines. Anyone seen this version of the rotary vane engine www.regtech.com/ Regards Iain

This looks like it could generate a lot of power, Quote: "24 combustion cycles per revolution", however would question the designs ability to get into production as effectively the piston/camshaft are one element and designing such a system to be efficient, powerful and reliable would be a real challenge. The comubustion takes place at the same point of the cam possibly resulting in heat and wear problems.

[Pigeon]

chassis 33 said:

a little unsure how they turn the linear motion of the pistons into a rotation ho hum.

Looks like one of those zigzag crankshaft doobries to me.

[chassis 33]

annodomini2 said:

This looks like it could generate a lot of power, Quote: "24 combustion cycles per revolution", however would question the designs ability to get into production as effectively the piston/camshaft are one element and designing such a system to be efficient, powerful and reliable would be a real challenge. The comubustion takes place at the same point of the cam possibly resulting in heat and wear problems.

Before I left a certain engineering fir, who's namesake is owned by BMW, we sent an engineer over to look at the engine with a view to putting it in a compact genset, and he was quite impressed, if you look at the power/size and power/weight of the titanium based engines its a stonking little engine, but like you say, the localised heat isues could be a problem, however the standatd Otto IC engine that we all know and love pretty much gets around that.

REgards
Iain

[stevieturbo]

I only looked at the little demo clip, but how does it convert the up/down, into rotational movement that we all end up using ?

[aceparts_com]

It's odd that no where on the site does it actuall show you one running? I guess the piston engine will be with us for many years yet.

[cymtriks]

It's a Stirling engine. The fuel is burnt continuosly as in a steam engine. Power is produced by pressure changes in the air (or other gas) inside the engine, which is heated by coming into contact with the hot cylinder walls.

Sterling engines will run off any temperature gradient. I have one at home that will run equally happily off a cup of hot water or a bowl of ice cubes.

[chassis 33]

Yes I understand the principals of the Stirling engine (once built a steam powered stirling generator when the iron piston traveled through a coil wrapped round the outside of the cylinder wall )

But how to they turn the wobble yoke bit into a rotation of an output shaft?

Regards
Iain

[Sparks]

I believe that the missing piece in the diagram is a rocker going down the centre of the two yokes. Independantly, each yoke would give a lateral movement, but set up correctly, between them they will give a rotalional output directly down (hence the rotating dark spot in the animation).

Sparks (preparing to be shot down......)