Digital Valves

guest76

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I have been watching this space for years with interest, and it seems there has been some good advancement recently by a UK company.

Great application for long distance trucks, where I dint see them easily being able to implement electric in lieu of diesel power very easily because of the challenges around range before recharge.

But it does also make me wonder if there would be an application for bikes too?
No cam, no chain, no followers, no pushrods, no rockers, no valve springs.
It’s quite an appealing idea in my opinion!


“British company Camcon Automotive has built the first fully electronic engine valve system, uncoupled from the crankshaft, that offers unprecedented control over the combustion cycle.”

https://newatlas.com/camcon-digital-iva-valve-system/55827/

Digital Valves
 
Amazing!
Can you imagine that on a Norton? With the ability to go '2 strokes' during heavy acceleration!! Or '12' strokes on the motorway...instantly varying from a standard cam to PW3 and beyond...with desmodromic digitally actuated valves...where do I sign?!?
 
@Jagbruno it really is an interesting space - soft cams and dodgy stellite wouldn't be on the agenda for discussion topics anymore!

I can just imagine this alongside the fuel injection on @comnoz's bike!!!
 
Wow, that's cool.

I had always imagined an infinitely variable valve timing would drive the valves via electromagnets...
 
Brilliant!
May add enormous production costs to an engine, but it is certainly very ingenious.
Wonder how much alternator output is required to operate the valves?
Also, all the apparatus would make a motorcycle engine really top heavy.
 
BritTwit said:
Brilliant!
May add enormous production costs to an engine, but it is certainly very ingenious.
Wonder how much alternator output is required to operate the valves?
Also, all the apparatus would make a motorcycle engine really top heavy.
Click to expand...

+1
The Koenigsegg design proposal relies on pneumatics. That is strange, as it would require very high pressure and a constant supply of compressed air, and a lot of noise during valve operations is to be expected.
I expect more from the british design, which seems to use hydraulic oil and electromagnetic valves. However, truck diesel engines are turning at 2000 rpm max. which probably suits a hydraulic valve control well, but for higher rpm's maybe not.

Oldbeezer: I'd like to read more about the BMW design, if you can dig out the article.

-Knut
 
Knut, I deleted the post because I did not properly recall the details. It was not as electronic as I thought but here is a youtube link it is called "valvetronic variable valve lift" it does not vary the timing.
 
It’s all all hypothetical so it doesn’t matter with regards to the Norton engine anyways. :cool:
 
'Nobody's ever done variable valve timing on the exhausts, so the benefits are less well understood.'

The first thing I thoughtof when changing from four-stroke to two-stroke to get more power in short bursts, were the differences in the required exhaust system. There are not many guys who try different exhaust valve timings when they alter their exhaust systems on four-stroke motors,and two-strokes need well-designed expansion chambers to get the best out of them.
Some of these engineers get absorbed in a small area of expertise and need to widen their horizons.
 
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