End of the CamShaft ?

So let me get this right! Koenigsegg did not invent this tech, SAAB did?

So Koenigsegg have picked up the ball and are going ahead with it all...

Im stunned! Surely SAAB was worth saving as a brand? They always did make good stuff, well until GM got their hands on em:(
 
Although he has had it running in a car for over 2 years that's done around 45k Miles. And NO problems! (he says)

Difficult to judge on a test mule like that though, don't forget he said it has just been fitted with the fifth generation system so how many miles any one unit has done is a mystery.

It looks like a fantastic technology and I look forward to seeing it implemented. I now also want a Koenigsegg really quite badly :p
 
Formula one has been on a similar track for a while as it uses Pneumatic units to return the valves to their seats rather than valve springs, at least I know the Cosworth CA does
 
Was sat watching this with a massive sense of deja vu ...then I noticed it was published nearly a year and a half ago and i've watched it before :p
 
It's a fantastic idea, and could potentially lead to a map that good adjust itself throughout the rev range. So all the benefits of a high lift cam at high revs, with the smooth idle of a normal cam!
 
Is that computer controlled though or just like the gas strut that opens your boot?



The pneumatic part just replaces the spring that's in a conventional set-up. (has been in F1 for quite a while, and Moto GP for some time)

From what i understood from the vid, it's only opened by the actuator, still closed by the pneumatic pressure.

Amazing concept though. Map in a cam profile! :)


Didn't Lotus have something similar a few years ago as a single cyl test motor?
 
Fiat are still using cams though AFAIK, this system does away with the cams entirely and individually actuates each valve independently
 
Remember reading about various manufactures developing prototype units of solenoid actuated valves back when I was in college 12 years ago.
 
Fiat are still using cams though AFAIK, this system does away with the cams entirely and individually actuates each valve independently

Yes the Multiair system still uses cams and conventional valve springs. The difference is that there is a hydraulic system between the cam and the valve to delay opening or advance closing. It's a clever and (so far) reliable system, but doesn't give the flexibility that direct valve actuation would.
 
Could the manufacturers be holding this back for profits / lifespan / spares until forced to ?

/Grabs his tin foil hat.

Wouldn't be entirely surprising. Keep hold of it until fuel prices actually start to affect sales of IC engines, then oh look, we found 30% more fuel economy with our clever new design!
 
Could the manufacturers be holding this back for profits / lifespan / spares until forced to ?

/Grabs his tin foil hat.

Everyone is fighting tooth and nail for fuel economy, there's no way every car manufacturer would hold back something that would give them a massive market lead.
 
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