Engine experts?

[car_freak]

Hello everybody,
New to this site.. Hope to learn more about cars. I am not an expert in engines but i hope to learn more about it. Just had some basics training in cars - thats all..

Now, who can tell me more about double vanos?
that is one thing I have no idea about. so pls. start onthe basics of how it works for me..

Hope to meet more car ethusiasts like me here in future..
I have also just got my new site running - www.nostics.com

 

[GPTourer]

Double vanos, huh?

I'd be on the BMW boards if I were you. It is a completely variable valve timing system that debuted on the M3.

 

[lacroixdp]

All I worked on before i started toying around with DSM's were BMW's. From a personal opinion standpoint, I am NOT a fan at all of the new engines they are cranking out, or the cars for that matter. But on to your question. All VANOS is is a infinitely variable valve adjustment mechanism. I don't know the engineering specifics, as my interest in BMW's end at the E30 variety, but I am pretty sure that it started on the intake port, then they added it to the exhaust port "Please correct me if I am wrong". It is somewhat similar to VTEC, but it has the added benefit in the newer cars of being infinitely variable. I think VTEC might do the same thing now. But seeming as the new E90 engines will not have camshafts in the higher end engines, you won't see too much talk of VANOS; it will be all valvetronic.

 

[lacroixdp]

Oops, I meant to say that they don't have throttle butterflies; they still do have camshafts. The engine they are currently designing does not have a camshaft; the engines they are putting in the E90's upon release will have cams, but won't have throttle butterflys.