New type of engine?

Fahd · World Chat Champion Joined: 17 Jan 2006 Karma :

Interestingly uses two-stroke technology rather than 4-stroke and is capable of meeting much stricter emissions than old 2-strokes (or even 4-strokes):

(Scroll down the page for moving diagrams of the engine at work).

https://www.autoblog.com/2009/11/30/autoline-on-autoblog-with-john-mcelroy/#continued

Thoughts?
____________________
I Ride: Honda CBR 400RR.
I Drive: Audi S3.

Itchy · Super Spammer Joined: 07 Apr 2005 Karma :

Quite clever, though I do like the 6 stroke engine a bit more (as it is less of an evolutionary leap).

I wonder how you would cram it into the chassis of a bike though, as those BMWs are already pretty damned wide to start with and thats just an opposed flat twi, BMW man on his R1150GS tried hard one day following me on me CBR and the cylinder head touched down. I suppose you could have a + shaped four or would that be an 8? Confused

____________________
Spain 2008France 2007Big one 2009 We all die. The goal isn't to live forever, the goal is to create something that will. In the end, your life will flash before your eyes. Make sure it is worth watching.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Not sure I see any advantages. More moving parts.

However also can't see why it has to be an opposed twin. Looks like it could be built as a single. Just that it looks like it would result in a hideously long crank for a single or parallel twin.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

I wonder if it could be made a bit 'easier' by having two cranks, one either end, then your row of cylinders between them.

ms51ves3 · Super Spammer Joined: 07 Jun 2007 Karma :

Can somebody please explain to me how the fuel and air enters and leaves?

Also, however it works, surely you could remove the normal crank and piston and just have the outer piston and the long conrods, then have a 2 stroke cylinder head (apart from it wouldn't be a head because it would be inside the engine). The only problem I can see with my idea is the scavenge efficiency wouldn't be any better than a normal 2 stroke.

buddy · Trackday Trickster Joined: 07 Mar 2009 Karma :

its got ports, have another look

i think its a crap idea anyway

1st what makes it more effecient at scavenging?
2nd its much too complicated
3rd it would be really heavy for its size since youve got 2 pistons rods ect for each cylinder

much better off trying to make a fuel injected 2 stroke
____________________
When this baby hits 88 miles per hour... you're gonna see some serious shit.

Shreddie · Spanner Monkey Joined: 20 Nov 2009 Karma :

spitfire123 · Could Be A Chat Bot Joined: 06 Nov 2008 Karma :

Think of the rebuild costs on that thing Surprised

____________________
You won't be able to eat my dust......As it'll settle before you get there.

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

pepperami · Super Spammer Joined: 17 Jan 2010 Karma :

Wafer_Thin_Ham · Super Spammer Joined: 18 Nov 2005 Karma :

pepperami · Super Spammer Joined: 17 Jan 2010 Karma :

Kickstart · The Oracle Joined: 04 Feb 2002 Karma :

Hi

Not really no. Carbs work very well on bikes. Biggest problem on a 2 stroke is that the exhaust port is open at the same time as the transfer ports so a load of fresh fuel and air goes straight out of the exhaust. Compared to this any small saving from injecting the fuel in slightly more precise amounts is tiny (and for most greatly outweighed by the far higher cost of a fuel injection system).

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing