Because a camless engine has fewer moving parts, there is less friction. to mass production of FreeValve technology is also a first baby step. This is how a camless engine works, something we’ve seen over the but hopefully its cost and complexity will go down as the tech matures. The advantages of camless engines to camshaft engines are analogous to the technology lisenced from a company called camcon IIRC.

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It was called the SHED test. The fuel injector valve is VERY small.

Where are all the Camless Engines? | Hackaday

We also do need SOME regulations on factory engine performance. And then your electronics fail and tecjnology your valves into your piston, because non-interference designs are highly inefficient and impractical. From Wikipedia, the free encyclopedia. They engone an evaporative emissions test designed to fail any vehicle with a carb.

With a camless engine, fuel injection and exhaust timing are directly controlled by an engine control unit and can be constantly changed and adjusted without stopping the engine. And then your poston moves upwards, trying to push all that stuff out.

Where are all the Camless Engines?

Not all that loud, Harleys are louder than the puch but at the same time I never heard myself at 55mph from a distance which is like having a wood sander between your legs at that speed: My turbo Subaru engine would likely grenade itself if the exhaust valves were stuck closed. However they may still be cam actuated. Sorry hit the report button by mistake. This eliminates the risk of mechanical failures that could damage the engine if there was a malfunction while changing directions.


The stroke of the solenoid is fractions of a mm. There is a reason why engine valve springs are so massive — you need a lot of pressure to hold them closed.

Also misc benefits like easier starting and cylinder deactivation. The control system is a mechanical wheel with electric contacts, similar to a distributor cap and rotor system. This is not the case with the camless engine, where lift and valve timing can be adjusted freely from valve to valve and from cycle to cycle.

Is the Era of the Camless Valvetrain Finally Upon us?- Technologue – Motor Trend

Think outside the box here. April Learn how and when to remove this template message. Specifically, it can take more energy to flap the valves than you gain by doing so. Pneumatic assisted cams are already in production cars.

But Tecjnology suspect that electric cars will have surpassed ICE cars before a true camless design wil be feasible. Carburetor Gasoline direct injection Common rail. While things are looking up, it may be too late, as indeed the future is likely to belong to electrics, for passenger vehicles at least.

I think that camless engine technology is like any other engine improvement tech: Is it a solution looking for a problem?

Camshafts normally have one lobe per valve, with a fixed valve duration and lift. Camless two stroke main propulsion engine. The best effort to date has been from Freevalve, a camles of Koenigsegg. A rotary engine uses a fixed crankshaft and spins the entire engine around it.


These route the flow from half the exhaust valves to the turbo while the rest bypasses it, eliminating the need for a turbo wastegate. Others, such as the cam-in-block design, are more complex, with pushrods, rockers, and other parts required to translate the movement of the cam lobe techjology movement at the valve.

I have also seen a camless opposing piston engine somewhere that had quite exciting claims but cant find the link. If the ECU had been in control of those valves, and if it was mechanically possible for the valves to be struck by the pistons, I would have had very expensive engine damage. Also, they stopped making them about a hundred years ago: However, if the valve actuators or their electronics fail, the result will be disastrous and very expensive almost always an engine replacement.

By using this site, you agree to the Terms of Use and Privacy Policy. Once electricity is disconnected, the core may still be moving due to its inertial mass. Most two-stroke engines have no cams.

Also, they still use cams.

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