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#4647978 - 01/27/18 12:14 PM Camless Valvetrains
Nyquist Offline


Registered: 10/24/08
Posts: 967
Loc: Iowa
This looks cool, but I would question the longevity.

https://www.msn.com/en-us/autos/enthusia...ocid=spartanntp
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#4647986 - 01/27/18 12:37 PM Re: Camless Valvetrains [Re: Nyquist]
Trav Offline


Registered: 11/20/06
Posts: 18842
Loc: MA, Mittelfranken.de
As long as the solenoid defaults to a closed position if it fails I think its a good possibility this will work well and possibly be reliable until the aftermarket parts manufacturers start producing replacement parts at a low price point.
The more I think about it this would be great if it can be made reliable, no belts/chains, tensioners, cam shafts, lash adjusters, VVT systems VCM components, etc.
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#4647995 - 01/27/18 12:50 PM Re: Camless Valvetrains [Re: Nyquist]
Rick in PA Offline


Registered: 01/04/03
Posts: 3203
Loc: Southeastern, PA
I'll +1 on the no belts/chains.

I like it. It could be as, or more revolutionary then fuel injection was to the carburetor. Think of the possibilities it opens up. The currently rigid profile of operation of the valve becomes infinitely variable.


Edited by Rick in PA (01/27/18 12:52 PM)
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#4648002 - 01/27/18 01:11 PM Re: Camless Valvetrains [Re: Nyquist]
CT8 Online   content


Registered: 10/09/14
Posts: 10930
Loc: Idaho
The HEUI seem pretty close to the commercial viability or the camless valvetrain.
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#4648025 - 01/27/18 01:49 PM Re: Camless Valvetrains [Re: Nyquist]
JohnnyJohnson Online   content


Registered: 10/22/09
Posts: 2734
Loc: Wet side WA
So now you cam can become variable! From a torque developing or to full race high RPM. LOL or is that hoping for too much.
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#4648031 - 01/27/18 01:55 PM Re: Camless Valvetrains [Re: JohnnyJohnson]
Trav Offline


Registered: 11/20/06
Posts: 18842
Loc: MA, Mittelfranken.de
It would seem if you can can imagine the cam profile then its possible. WOW, the reduction in weight, moving parts, reduction in head size, possibly even removing lubrication requirements in the top end and even improved reliability along with the ability to go from mild to wild in an instant, the possibilities are mind blowing.

This is one new development I am really exited about.


Edited by Trav (01/27/18 01:56 PM)
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#4648039 - 01/27/18 02:07 PM Re: Camless Valvetrains [Re: Nyquist]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7475
Loc: S California
You can ditch the starter, too.

Want to really dig into the Freevalve engine....



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#4648045 - 01/27/18 02:14 PM Re: Camless Valvetrains [Re: Trav]
oil_film_movies Offline


Registered: 06/13/16
Posts: 2551
Loc: MN
Originally Posted By: Trav
The more I think about it this would be great if it can be made reliable, no belts/chains, tensioners, cam shafts, lash adjusters, VVT systems VCM components, etc.
Those timing chains also consume some power (friction), so that is factored in to the overall energy efficiency of the entire new system as well.
On replacement costs, remember labor is a big part of it all, and these actually seem like they could be a somewhat easy, quick fix if one goes bad, pop the old one out, new one goes in.... DIY very possible.

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#4648054 - 01/27/18 02:23 PM Re: Camless Valvetrains [Re: oil_film_movies]
Trav Offline


Registered: 11/20/06
Posts: 18842
Loc: MA, Mittelfranken.de
I can see that. Imagine being able to do away with this mess (internet picture).

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#4648072 - 01/27/18 02:36 PM Re: Camless Valvetrains [Re: Nyquist]
CBR.worm Offline


Registered: 05/10/05
Posts: 1833
Loc: Jupiter, Fl
I'm sure Audi would figure out some way to make the compressor drive similar to that.
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#4648165 - 01/27/18 04:32 PM Re: Camless Valvetrains [Re: Nyquist]
Jimzz Offline


Registered: 10/03/14
Posts: 1140
Loc: NoVA
Car companies have been trying to design this for many decades. As said no more timing chains and perfect valve control at all RPMs. But reliability has always been an issue.
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#4648194 - 01/27/18 05:00 PM Re: Camless Valvetrains [Re: Nyquist]
spasm3 Offline


Registered: 05/30/10
Posts: 8642
Loc: North Carolina
I would be complicated but think about the aftermarket tuning capabilities. Controlling lift and duration with a lap top. Short duration down low, more duration and lift at selectable rpm ranges.


Edited by spasm3 (01/27/18 05:00 PM)
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#4648296 - 01/27/18 07:02 PM Re: Camless Valvetrains [Re: Nyquist]
SilverFusion2010 Offline


Registered: 06/29/11
Posts: 1657
Loc: Crawfordville FL
The next big thing for NA engines. Turbos change the equation a lot for the low end. Boost make torque down low.

Designing something that will match the existing reliability will be the trick. Consumers are not going to buy one if they blow up right at 100k miles.




Edited by SilverFusion2010 (01/27/18 07:04 PM)
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#4648405 - 01/27/18 08:52 PM Re: Camless Valvetrains [Re: SilverFusion2010]
Trav Offline


Registered: 11/20/06
Posts: 18842
Loc: MA, Mittelfranken.de
Just like FI when it was first introduced, that was real sketchy stuff but today we accept is a normal and reliable.
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