new engine with no camshaft!!

[T-Mill]

Re: new engine with no camshaft!!

In my strength of materials class I asked my prof about this b/c he's a huge car guy, and he said that there's a company subsidiary of BASF that is working on a way to fuse ceramic into metals, by basically dissolving the two into another medium and then extracting it. Sounded pretty complicated, but that's why I'm still the student;) This would be a huge advantage because ceramics are known for the incredible heat dissipation, and durability under extreme heat. Hasn't been perfected yet, but at least it's in the works

[Digiphaze]

Re: new engine with no camshaft!!

i'm not completely familiar with the whole thing but my logic is telling me that they're gonna need really strong springs to open and close the valve as fast as it needs to. if you've never taken an engine apart, all ya gotta know is that you can put all your weight on those springs and they dont move much. i'll bet it takes more than 700 watts just to move a few of those things at idle, let alone WOT. multiply that times 12 valves for us, 16 for an 8 or as much as 32 on the northstar (i'm assuming thats what they're gonna test it on cuz caddies always get to be guinea pigs for some reason) and you have a HUGE amount of power. thats gonna have to come from the engine, convert to electrical energy, then convert back to mechanical. as already stated, i dont see it happening feasibly in production cars anytime soon. unless i'm totally looking at this wrong.

I'm wondering if you even need valves in the sense that they are now. They way they are designed curently is great if they are being opened mechanically and need to close via preassure from the springs. But with electronically controlled valves, perhaps they can use something like a flutter valve or similar. Won't require excessive force for the sylonoid (sp?) to open/close.

[mwh27]

Re: new engine with no camshaft!!

Yeah, why not just more rotary?

More rotary!!!

[red3800]

Re: new engine with no camshaft!!

The 2007 W204 Mercedes Benz C-Class will be the first car from German marque to use a camless engine.