Typically i wouldn't post in incorrect forums, but this seems like the best place for discussion regarding the topic. Check out the vid:

 

Very cool.

 

Not very new - F1 engines have had engines w/o cams for quite a few years. I think Renault may have been the first.

 

That is awesome! Making sick nasty cars and helping efficiency as well.

 

Boring & worthless. By the time that's developed, cumbustion engines will be illegal.

 

good stuff

 

You and I have different definitions of boring. Further I believe your missing the point.

 

Just my opinion. Tell me what point. I may have missed something.

 

Definitely cool.

 

I still will talk about this,
When the video started, they showed a nice looking sports car do it's thing. So I was expecting to see more of the car & some more talk about it. Instead the guy started pushing some new? idea on heads without cams. The video is over an hour long. I'm old, so I wasn't going to spend that much time watching all of it. What I caught was valves being moved by air pressure or some other way + lubrication. The guy wasn't even sure which way they would go. Then I saw a car that was presented as using those heads for many miles. He stressed that the engines can be made a bit smaller & lighter. Did I miss something because I skiped through the Video? A small proven 4 cyl. with a small turbo does the same, without the worry. What REALLY TICKED me off, was that after all that talk, he never started the car. Something that I'm sure we all wanted to hear. Like I said, if I missed something, please tell me.
I don't just post one sentence zingers without having a reason.

 

did you watch a different video??? the one linked was 10 mins long.. maybe i missed the real one? either way i thought it was pretty cool.

 

I may have misinterpreted your original statement. While I do agree that the video was lacking, the subject matter isn't. So I apologize if that was your original intent. What is interesting is the theoretical "cam" profile. From my understanding of how it could work, is that there is a potential for unlimited amount of movement, duration, and lift. Maximizing efficiency, similar to how variable valve timing works now. He didn't elude to this nor is it even a possibility but the idea is extremely intriguing to work in said concept.

So again, my statement of "You and I have different definitions of boring" is referring to the subject matter. Also, not sure what video is an hour long, I'm assuming that's sarcasm.

 

Your right. Damn those drugs.

 

thats amazing i would love a system like that on my car lol, program individual cylinders for valve events, fuel and timing? yes please.

 

f1 does actually run cams, they dont run springs on the valves.
http://www.pureluckdesign.com/ferrari/f1engine/

 

You're much to polite. I don't deserve it Thanks

 

Was I the only one expecting the guy to start the car? Why didn't he?

 

for those that dont get it, this is cool on so many levels.
A friend and i tried to design something similar while at uni a (5years ago) but being electonics guys we were trying to drive the valve with electricty etc (and failed)
doing it with pneumatic/hydraulic actuation is much better LOL.

This has many benefits
turning cams robs HP and costs fuel.
as shown in the vid the valve can be at max lift for a much longer duration (more hp)
and u can customise the duration and event timing for any rpm (think Vtec on steroids)
all these torque gains means smaller engines for same performance which means less fuel on top of the savings from no cams to turn.

 

Looks like we're both partially right. Renault do have a camless (Electro_hydraulic) design, but it's not ready for prime-time, yet.
http://scarbsf1.com/valves.html

 

from my understandind the renault design was banned when people started to catch wind about it even though it never actually came out.