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Camless Engines...the way of the future?


Geeesammy

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LINK: http://jalopnik.com/what-its-like-to-ride-in-a-car-with-the-camless-engine-1529865968

 

I was watching a documentary on based on Christian von Koenigsegg and his car company a few months back, and he made mention of this technology he and his company were beginning to develop, I found it pretty interesting but he didn't mention any of the real gains aside from losing the camshaft and an increase in economy. He never mentioned the specifics as far as expected gains over the traditional gas engine design with an OHC or OHV design. Pretty cool read.

 

They can run it as a two stroke at lower revs, which effectively improves power delivery to make 3,000 RPM feel like 6,000. It can run the Miller Cycle, which sounds complicated but improves both power and efficiency. Mazda did it in the Millennia S. It can also run multiple fuels. Christian said it can run diesel or gas. You can't mix them together and expect it to work, but maybe two separate tanks depending on what you want to do.

 

...If applied to a current engine, it will provide 30 percent more power and torque, and up to 50 percent better economy. It's also lower and smaller than an engine with a camshaft. So, if built from scratch, a smaller displacement engine can have the power and efficiency to compete with larger engines.

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Fully pneumatic valves were tried in F1 in the '90s but never made it to races. Supposedly Honda tried it in MotoGP as well but I don't know anything about bikes.

 

While pneumatic or magnetic valves are probably the way of the future, they've been competing against steady advancements from variable valve timing systems, which can shut off valves or whole cylinders already. And there's some camless valvetrains already on the market, although they're still all linked by a spinning shaft.

 

edit: Feel dumb, can't get embedding to work:

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