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#4454914 - 07/10/17 04:55 AM GDI
OneEyeJack Offline


Registered: 09/14/10
Posts: 7479
Loc: S California
There are several engines with new fuel/intake systems being designed to meet proposed upcoming emission standards in various parts of the world. Statements have been made about GDI, the expense and complication and it has been stated that one of its major contribution to the process is that it cools the combustion chamber and without that requirement in the process to reduce emissions it's better to go with port injection.

In the attached video Christian Von Koenigsegg makes this point clear as he is describing what I would call a new generation gasoline engine that not only meets these proposed upcoming requirements but produces more power as well. It's also smaller and weighs less and is mechanically less complicated because there is no camshaft or camshaft drive mechanism and no need to preheat or add a pre-catalytic converter and the associated hardware. Interesting.

And a side note here. If Christian Von Koenigsegg claims that he can do something like this, believe it. He has an amazing track record for producing new products and is very realistic in his claims and statement he makes about his work.


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#4454926 - 07/10/17 05:46 AM Re: GDI [Re: OneEyeJack]
demarpaint Offline


Registered: 07/03/05
Posts: 29774
Loc: NY
Interesting, thanks for posting.
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#4455052 - 07/10/17 08:54 AM Re: GDI [Re: OneEyeJack]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 18954
Loc: Sunny Florida
Good for the K that he can do this. But others have experimented with the same idea and dropped it, so I don't know how viable it is for mass production.

K has production numbers that seemingly peaked at 29! An awful small number indeed. Very specialized niche vehicles with "WOW" prices.

If his system is viable for real production cars I am certain he would be paid handsomely for it...
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#4455067 - 07/10/17 09:18 AM Re: GDI [Re: OneEyeJack]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Wow.... getting closer to "Star Trek level" on ICE's...
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#4455068 - 07/10/17 09:19 AM Re: GDI [Re: OneEyeJack]
mightymousetech Offline


Registered: 04/03/17
Posts: 1444
Loc: Ontario, Canada
Yup, the Freevalve engine will revolutionise the gasoline engine.
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#4455235 - 07/10/17 12:13 PM Re: GDI [Re: OneEyeJack]
merconvvv Offline


Registered: 07/10/16
Posts: 682
Loc: il usa
thanks for posting.
Really informative.
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#4455475 - 07/10/17 05:04 PM Re: GDI [Re: OneEyeJack]
KrisZ Offline


Registered: 12/23/06
Posts: 7469
Loc: Toronto, Canada
Fiat's multiair is based on the same technology, on the intake side only I think. So it is viable, but we all know how everything Fiat is received here.
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#4456092 - 07/11/17 10:41 AM Re: GDI [Re: OneEyeJack]
NateDN10 Offline


Registered: 01/10/10
Posts: 1735
Loc: Rochester, NY
Fiat's system is not a camless engine, even on the intake side. It essentially allows the valves to be decoupled from the camshaft and close early.

http://www.caranddriver.com/features/fiats-multiair-valve-lift-system-explained
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