Great technology, no cams or cam belt!


Leej8

Leej8

Well-Known Member
Joined
Oct 12, 2015
Messages
1,613
This guy is brilliant and making big steps for ICE a must watch
 
I see this video awhile ago.
Kills vtec system all day lol
 
You see him adjusting opening timing of the valves ?
I'm sure you can tune it to stay open just like
Vtec would .
Or wherever way you like ?
 
Yeah like he said in the video.
Open is almost instant not like a cam and you'd be able to hold it open as long as you wanted like an injector but for air...
Basically kills the camshaft/valve Spring trade outright really lol
 
And you could have any lift, duration , you like
It would be a game changer
 
Exactly, but it's not a fixed lift/duration like a camshaft.
Would be infinitely variable throughout the Rev range.
 
If the bottom end could spin that fast then yes.
I'm pretty sure the v10 screamer f1 engines used similar tech for valve control.
Think they used cams to open the valves and an air spring to shut them.
This seems like an advancement on that.
 
Yeah and the air boost thingy,
I like his way of thinking and not just showing a
Desk prototype that never get off the ground,
 
Yeah I wonder how far this has come since the video was released.
I'd expect it to be used in a hyper car soon enough? Probably massively expensive to convert a normal engine though...
 
Other than bonnet clearance they mentioned in the video?

Cost?
Ecu to run it?
Essentially a custom head needed?
Our bseries engines take crank position from the inlet cam?
 
A few challenges - they need hydraulic and pneumatic pressure to work, so you would need pumps for both to start before the engine.

A much finer encoder needed on the crank - easy.

The biggest challenge to me is their failure mode. There is mostly just the issue of a snapped belt to concern yourself with on a camshaft but these have to move freely which requires running clearance, but seal against the pressurised gas. Debris etc could potentially have devastating effects. The engineering then has to be pretty incredible - I think its a while until we will see them.
 
jesse888 said:
Other than bonnet clearance they mentioned in the video?

Cost?
Ecu to run it?
Essentially a custom head needed?
Our bseries engines take crank position from the inlet cam?
Click to expand...
Lol I think a b series is a long way off to retro fit this tec ,
Cool idea all the same,
 
JohnTurbo said:
A few challenges - they need hydraulic and pneumatic pressure to work, so you would need pumps for both to start before the engine.

A much finer encoder needed on the crank - easy.

The biggest challenge to me is their failure mode. There is mostly just the issue of a snapped belt to concern yourself with on a camshaft but these have to move freely which requires running clearance, but seal against the pressurised gas. Debris etc could potentially have devastating effects. The engineering then has to be pretty incredible - I think its a while until we will see them.
Click to expand...

I wasnt thinking laterally enough there was I!
 
JohnTurbo said:
A few challenges - they need hydraulic and pneumatic pressure to work, so you would need pumps for both to start before the engine.

A much finer encoder needed on the crank - easy.

The biggest challenge to me is their failure mode. There is mostly just the issue of a snapped belt to concern yourself with on a camshaft but these have to move freely which requires running clearance, but seal against the pressurised gas. Debris etc could potentially have devastating effects. The engineering then has to be pretty incredible - I think its a while until we will see them.
Click to expand...

I wasnt think laterally enough there was I!
 
You must log in or register to reply here.
Back
Top