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GDI #4454914
07/10/17 03:55 AM
07/10/17 03:55 AM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline OP
OneEyeJack  Offline OP
Joined: Sep 2010
Posts: 7,485
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.


Re: GDI [Re: OneEyeJack] #4454926
07/10/17 04:46 AM
07/10/17 04:46 AM
Joined: Jul 2005
Posts: 30,982
NY
demarpaint Offline
demarpaint  Offline
Joined: Jul 2005
Posts: 30,982
NY
Interesting, thanks for posting.


God Bless Our Troops

Re: GDI [Re: OneEyeJack] #4455052
07/10/17 07:54 AM
07/10/17 07:54 AM
Joined: Oct 2008
Posts: 19,206
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline
Joined: Oct 2008
Posts: 19,206
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...


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
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Re: GDI [Re: OneEyeJack] #4455067
07/10/17 08:18 AM
07/10/17 08:18 AM
Joined: Dec 2016
Posts: 7,151
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,151
Waco, TX
Wow.... getting closer to "Star Trek level" on ICE's...


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: GDI [Re: OneEyeJack] #4455068
07/10/17 08:19 AM
07/10/17 08:19 AM
Joined: Apr 2017
Posts: 1,481
Ontario, Canada
mightymousetech Offline
mightymousetech  Offline
Joined: Apr 2017
Posts: 1,481
Ontario, Canada
Yup, the Freevalve engine will revolutionise the gasoline engine.


Mighty Mouse Tech
BMW Tech, Former Acura Tech
2010 Civic Si Castrol 0W40, Redline MTL
2013 BMW 135i M Sport Edition Castrol 0W40, Redline MTL
Re: GDI [Re: OneEyeJack] #4455235
07/10/17 11:13 AM
07/10/17 11:13 AM
Joined: Jul 2016
Posts: 682
il usa
merconvvv Offline
merconvvv  Offline
Joined: Jul 2016
Posts: 682
il usa
thanks for posting.
Really informative.


1988 Mazda RX7 na PP 10w30 Noack 4.7
1994 Chrysler Concorde 3.3
1999 Ford Expedition 4.6 QSUD 10W30 NOACK 5.0
Re: GDI [Re: OneEyeJack] #4455475
07/10/17 04:04 PM
07/10/17 04:04 PM
Joined: Dec 2006
Posts: 8,030
Canuck living in California
KrisZ Online content
KrisZ  Online Content
Joined: Dec 2006
Posts: 8,030
Canuck living in California
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.


2015 Dodge Grand Caravan-27k miles.
2006 Mazda 3-163k miles
Re: GDI [Re: OneEyeJack] #4456092
07/11/17 09:41 AM
07/11/17 09:41 AM
Joined: Jan 2010
Posts: 1,740
Rochester, NY
NateDN10 Offline
NateDN10  Offline
Joined: Jan 2010
Posts: 1,740
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


2016 Mazda3 - 20,000 mi.
2011 Toyota Sienna - 100,000 mi.

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