Oh my...

[wolfwings]

...I thought to poke around Revetec again, see about any new tidbits on the site, and they've done the math to make something even niftier.



This is an engine design that shows the true power of getting away from the crankshaft-based systems that prevent multiple overlapping centerlines for the pistons without sacrificing reliability. Initially meant to be in a 2.4l system, I'm staring at that and drooling. Though it's easier to see how things work if you manually slideshow through the frames. They estimate the core longblock will be around 160mm (<7in) deep. Sure, piping will add to that a bit, but the core engine being thinner than most one-use compact spare tires used on cars today. Just amazing.

Comments

[shabm.livejournal.com]

Also: I'm trying to understand how this thing would pass power down into other system. What is the 'crankshaft' -- the large gear, the center shaft, or what?

[wolfwings.livejournal.com]

Think of it like replacing the crankshaft with a camshaft. The gear on the end with the holes cut into it is, in effect, where a flywheel could be mounted for car use. That particular 3D rendering is meant to be used with a propeller, so it's a large, lightened gear connecting to a smaller gear below instead.

But yes, the central shaft of the camshafts is where all the torque is transmitted to. =^.^=

I think of it as comparing pushrod valvetrains to overhead camshaft valvetrains, this is a similair replacement of the long 'rods' connecting the crankshaft to the pistons that flex in multiple directions with cams that provide unidirectional force up and accept unidirectional force down.