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Camless Valvetrains #4647978
01/27/18 01:14 PM
01/27/18 01:14 PM
Joined: Oct 2008
Posts: 967
Iowa
Nyquist Offline OP
Nyquist  Offline OP
Joined: Oct 2008
Posts: 967
Iowa
This looks cool, but I would question the longevity.

https://www.msn.com/en-us/autos/enthusia...ocid=spartanntp


2015 Chevy Traverse 3.6L (LLT) Mobil 1 5w30 w/ Fram Ultra
2017 Chevy Cruze Hatchback 1.4L (LE2) Mobil 1 5w30 w/ Wix
Re: Camless Valvetrains [Re: Nyquist] #4647986
01/27/18 01:37 PM
01/27/18 01:37 PM
Joined: Nov 2006
Posts: 19,899
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,899
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.


ASE L1, Master. Deutsch Meisterbrief.
Re: Camless Valvetrains [Re: Nyquist] #4647995
01/27/18 01:50 PM
01/27/18 01:50 PM
Joined: Jan 2003
Posts: 3,203
Southeastern, PA
Rick in PA Offline
Rick in PA  Offline
Joined: Jan 2003
Posts: 3,203
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.

Last edited by Rick in PA; 01/27/18 01:52 PM.

A wise man told me:
"Heat is your friend." and "Any oil is better than no oil."
Re: Camless Valvetrains [Re: Nyquist] #4648002
01/27/18 02:11 PM
01/27/18 02:11 PM
Joined: Oct 2014
Posts: 11,821
Idaho
CT8 Online content
CT8  Online Content
Joined: Oct 2014
Posts: 11,821
Idaho
The HEUI seem pretty close to the commercial viability or the camless valvetrain.


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf
Re: Camless Valvetrains [Re: Nyquist] #4648025
01/27/18 02:49 PM
01/27/18 02:49 PM
Joined: Oct 2009
Posts: 3,208
Wet side WA
JohnnyJohnson Online content
JohnnyJohnson  Online Content
Joined: Oct 2009
Posts: 3,208
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.


2004 Corolla 124705
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74277
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18
Re: Camless Valvetrains [Re: JohnnyJohnson] #4648031
01/27/18 02:55 PM
01/27/18 02:55 PM
Joined: Nov 2006
Posts: 19,899
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,899
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.

Last edited by Trav; 01/27/18 02:56 PM.

ASE L1, Master. Deutsch Meisterbrief.
Re: Camless Valvetrains [Re: Nyquist] #4648039
01/27/18 03:07 PM
01/27/18 03:07 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
You can ditch the starter, too.

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



Re: Camless Valvetrains [Re: Trav] #4648045
01/27/18 03:14 PM
01/27/18 03:14 PM
Joined: Jun 2016
Posts: 2,963
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 2,963
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.

Re: Camless Valvetrains [Re: oil_film_movies] #4648054
01/27/18 03:23 PM
01/27/18 03:23 PM
Joined: Nov 2006
Posts: 19,899
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,899
MA, Mittelfranken.de
I can see that. Imagine being able to do away with this mess (internet picture).



ASE L1, Master. Deutsch Meisterbrief.
Re: Camless Valvetrains [Re: Nyquist] #4648072
01/27/18 03:36 PM
01/27/18 03:36 PM
Joined: May 2005
Posts: 1,842
Jupiter, Fl
CBR.worm Offline
CBR.worm  Offline
Joined: May 2005
Posts: 1,842
Jupiter, Fl
I'm sure Audi would figure out some way to make the compressor drive similar to that.


'06 Infiniti G35 Sedan 6MT - 170k
Re: Camless Valvetrains [Re: Nyquist] #4648165
01/27/18 05:32 PM
01/27/18 05:32 PM
Joined: Oct 2014
Posts: 1,218
NoVA
Jimzz Offline
Jimzz  Offline
Joined: Oct 2014
Posts: 1,218
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.


yup
Re: Camless Valvetrains [Re: Nyquist] #4648194
01/27/18 06:00 PM
01/27/18 06:00 PM
Joined: May 2010
Posts: 9,044
North Carolina
spasm3 Offline
spasm3  Offline
Joined: May 2010
Posts: 9,044
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.

Last edited by spasm3; 01/27/18 06:00 PM.

13 elantra 70k 5w30 QSUD
03 chevy avalanche79k synpwr 10w30
01 saturnsc1 185k synpwr rebuilt
17 mazda cx-5 5600 miles m1 0w30
Re: Camless Valvetrains [Re: Nyquist] #4648296
01/27/18 08:02 PM
01/27/18 08:02 PM
Joined: Jun 2011
Posts: 1,755
Crawfordville FL
SilverFusion2010 Offline
SilverFusion2010  Offline
Joined: Jun 2011
Posts: 1,755
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.



Last edited by SilverFusion2010; 01/27/18 08:04 PM.

2010 Ford Fusion SE 3.0L V6, 178k miles M1 HM 10w-30
Re: Camless Valvetrains [Re: SilverFusion2010] #4648405
01/27/18 09:52 PM
01/27/18 09:52 PM
Joined: Nov 2006
Posts: 19,899
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,899
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.


ASE L1, Master. Deutsch Meisterbrief.

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