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Posted by: malcolm2 Nov 22 2016, 04:16 PM

http://www.foxnews.com/auto/2016/11/21/revolutionary-camless-engine-moves-closer-to-production.html link to story.

Here is something for all you super tech engine guys. I did not know this was coming. Maybe you did.

Something else to go wacky with vacuum leaks

Posted by: JmuRiz Nov 22 2016, 04:40 PM

They've been working on it for a few years. I remember they had a test mule based on a Saab motor back then.
I love the idea of no need for direct injection while still improving performance and mpg (no more carbon buildup issues or need to run a catch can).

Kudus to the Chinese manufacturer for funding a real production engine. Hope they don't 'take' the tech like some of their other industries do.

Watch the koenigsegg series on the /Drive channel on YouTube...amazing things going on there!

Posted by: mark04usa Nov 22 2016, 06:35 PM

Here is a link to info at R&T, for those of us who want to avoid a fox site.
http://www.roadandtrack.com/new-cars/car-technology/news/a31657/koenigseggs-camless-engine-getting-close-to-production-in-china/

Posted by: matthepcat Nov 22 2016, 09:21 PM

Neat concept, now lets see if that circuit board with connectors can handle all the heat cycles and oil....and yea...air leaks.

Posted by: porschetub Nov 22 2016, 10:12 PM

B&W/MAN in Denmark were working on this for marine diesel engines,hydraulic actuation was there setup never heard of an end result but they had an engine on a test bed for a long time and it ran fine years ago, but I did wonder what would happen if it stopped and the oil supply shutdown,tech wouldn't tell me cause it was very secret @ the time.

Posted by: Dave_Darling Nov 22 2016, 10:17 PM

It's been on the way for a long time now. If Konigsegg really has the bugs ironed out enough for a production engine, that would be very cool.

--DD

Posted by: pbanders Nov 22 2016, 11:07 PM

One of the biggest problems with the development of pneumatic camless engines has been the noise. Apparently, the pneumatic actuation is incredibly noisy compared to mechanically operated valves. I haven't reviewed the new tech described here, I assume they've figured out a way to get round the problem. It would be a gigantic leap forward if it could be made to work quietly, reliably, and efficiently.

Posted by: rick 918-S Nov 23 2016, 08:38 AM

I was in a tech school probably 6 years ago where a friend was teaching advanced secondary BMW mechanics. He showed me a cylinder head that had solenoids over the valves in place of the cam. I seem to recall it was some sort of prototype.

Posted by: cwpeden Nov 23 2016, 08:47 AM

I thought this was already a reality in F1 with the solenoid valves?

Or this: http://www.google.ca/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwiNsaf2j7_QAhVE7WMKHQ6-CFwQjRwIBw&url=http%3A%2F%2Fwww.thetruthaboutcars.com%2F2007%2F12%2Fcoates-spherical-rotary-valve-system-let-the-rivet-counting-begin%2F&bvm=bv.139782543,d.cGc&psig=AFQjCNF65FxcQFXXRdQddEf_dGJUslNbVw&ust=1479998958469376

Posted by: pbanders Nov 23 2016, 09:08 AM

Camless engines are against FIA rules in F1. They've been using pneumatic return springs for years.

http://www.formula1-dictionary.net/pneumatic_valve_actuation.html

https://www.reddit.com/r/formula1/comments/20qfwz/do_the_engines_in_f1_still_use_ordinary_camshafts/

Info in the 2nd URL is 2 years old, but I think the rules are still the same.