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-   -   "Camshaftless" Engines (http://forums.pelicanparts.com/off-topic-discussions/753279-camshaftless-engines.html)

Hawkeye's-911T 05-30-2013 11:12 AM
"Camshaftless" Engines
 
I don't think this is a re-post - if so, my apologies.
Cheers
JB

The Future of the Internal Combustion Engine - Inside Koenigsegg - YouTube

matt711 05-30-2013 11:31 AM
pretty neat stuff..

flipper35 05-30-2013 11:55 AM
20% reduction in fuel is pretty significant for just modifying the valvetrain.

GH85Carrera 05-30-2013 12:32 PM
That kind of like the technology from F-1 engines.

flipper35 05-30-2013 12:58 PM
I think they use pneumatic springs, but still have camshafts.

porsche4life 05-30-2013 02:44 PM
Very cool!

Hugh R 05-30-2013 03:18 PM
The way I heard it no camshafts. Near the end of the video he talks about the left side of the head only having a cover area where the camshaft chains used to be.

legion 05-30-2013 03:51 PM
I have a camshaftless engine.

HHI944 05-30-2013 04:17 PM
I have a springless valve train.....who needs springs

kiwiokie 05-30-2013 04:30 PM
Quote:
Originally Posted by flipper35 (Post 7471509)
I think they use pneumatic springs, but still have camshafts.
I think they use pneumatic opening for intake valves but regular camshaft for exhaust valves.

Rick V 05-30-2013 04:31 PM
Those are some huge numbers, and looking for production in the next three years. Very nice.

jcommin 05-30-2013 05:39 PM
Would you feel as positive if, for argument's sake, it was a US company that the government gave money to a company similar to, I don't know- maybe like Tesla?

RWebb 05-30-2013 07:52 PM
I think I need more cam

Laneco 05-30-2013 07:58 PM
Quote:
Originally Posted by legion (Post 7471878)
I have a camshaftless engine.
Rotary?

angela

Don Ro 05-30-2013 08:29 PM
Interesting.
.
Different topic: Pistons having to constantly change directions seems so outdated to me.

Jim Bremner 05-30-2013 09:37 PM
Quote:
Originally Posted by Don Ro (Post 7472409)
Interesting.
.
Different topic: Pistons having to constantly change directions seems so outdated to me.
Said Dr Wankle!

Jim Bremner 05-30-2013 09:41 PM
There once was a camshaft that had ports cut into the cam and would function as a valve. I tried to google it but found nada

Maxim S 05-30-2013 11:50 PM
Didn't one of the M5 motors a few years back have solenoid-actuated valves instead of cams? Or was that just a prototype/concept thing that never made production?

Dansvan 05-31-2013 12:15 AM
Where does the compressed air come from? AC type compressor?

Flieger 05-31-2013 12:19 AM
Quote:
Originally Posted by Maxim S (Post 7472522)
Didn't one of the M5 motors a few years back have solenoid-actuated valves instead of cams? Or was that just a prototype/concept thing that never made production?
They have no throttle- called valvetronic. Variable valve timing AND lift. They still have cams, though. In fact, they have an extra cam to adjust the fulcrum of the rocker arms in order to change the lift.


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