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-   -   Alfadan 654 HP inline four (https://ecomodder.com/forum/showthread.php/alfadan-654-hp-inline-four-39430.html)

freebeard 06-01-2021 09:54 PM

Alfadan 654 HP inline four
 
REVOLUTIONARY new INLINE 4 - ALFADAN BIG BLOCK i4 ENGINE

one meellion dollars in crowd-sourced money, backing of Mahle and Freevalve, a proprietary 'connecting rod solution' and a running two-cylinder prototype.

I wonder if it will have the Porsche-Mahle 3D printed pistons:
Quote:

Porsche partners with MAHLE and TRUMPF to 3D print pistons ...
https://3dprintingindustry.com/news/...percar-173852/
Porsche produced six prototype pistons using a high purity M174+ aluminum alloy powder made in-house by MAHLE, and 3D printed them using a TRUMPF 5000 system. In a process taking a total of 12...
What can you do with a vertical engine orientation?

Stubby79 06-02-2021 07:38 AM

Turn it on it’s side.

YouTube must be predicting my videos very well, as I’ve been watching them a day or two before someone ends up posting them here.

One was of a diesel that was turned on end for a mower...same dang engine, just had a dry sump keeping the bottom cylinder from flooding.

Autobahnschleicher 06-02-2021 08:54 AM

The engine is vertical for packaging reasons.
That way the overall size of the outboard motor can stay within reasonable limits.
Likely has some kind of dry sump setup so the oil doesn't pool on the rear main seal or floods cylinders like it sometimes does in radials.

freebeard 06-02-2021 01:52 PM

Well, if it's dry sumped from the get-go my question is moot.

I know (or at least heard) that an Evinrude outboard motor block was used to make a steam engine for a VW Beetle. Do outboard motors even have a flywheel and clutch?

Piotrsko 06-02-2021 03:24 PM

Flywheel, yes because there isn't enough rotating mass with the driveline in Neutral which supposes a rudimentary clutch system

cRiPpLe_rOoStEr 06-03-2021 01:27 AM

Quote:

Originally Posted by freebeard (Post 649524)
Do outboard motors even have a flywheel and clutch?

I don't remember them having an actual clutch, which is understandable as the propeller may have an effect quite analogue to the rotors of a torque converter. On a sidenote, 2 uncles of my grandmother were mechanics and worked with marine engines.

jakobnev 06-03-2021 02:31 AM

That was so annoying!

He never gets to explaining how the new connecting rod actually works!

samwichse 06-03-2021 12:22 PM

Quote:

Originally Posted by jakobnev (Post 649569)
That was so annoying!

He never gets to explaining how the new connecting rod actually works!

Everything I can find basically says it's a big displacement 4, but designed with a flat plane crank and somehow significantly shorter con rods than you would normally see.

A guy, claiming to be the founder, repeatedly says the engine does NOT use freevalve technology here:
https://www.thehulltruth.com/boating...tboards-2.html
... but that it will be an option?

Anyway, if you want to see his posts, his username is afa928. Beware the annoying continuous scroll software on that forum though.

Sam

samwichse 06-03-2021 12:42 PM

The Beast of Turin is all I can think about

https://www.youtube.com/watch?v=bsdWgmp4TaQ

cRiPpLe_rOoStEr 06-03-2021 04:46 PM

Quote:

Originally Posted by samwichse (Post 649598)
A guy, claiming to be the founder, repeatedly says the engine does NOT use freevalve technology

Considering some large marine engines resorted to camless valvetrains before all the hype around Freevalve, and that a Swiss company was also developing an automotive camless valvetrain some years ago, it wouldn't surprise me if this engine actually resorts to a system different from the Freevalve.


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