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Old 03-27-2013, 04:11 AM   #4 (permalink)
renault_megane_dci
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la_voiture_de_courses - '03 Renault Megane Estate
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Quote:
Originally Posted by Frank Lee View Post
Oh for Pete's sake. Really? We must have 3,000 posts on cylinder deactivation that debunk trying it with a mere injector kill. The valves MUST be deactivated as well.
Sorry I did not do a search ...
On my way to do it before I ask some more dumb questions about engine dynamics ...

That being said, I'll keep up thinking about the concept in the right direction.

So, there are only two options to disconnect the valves :
- stop the camshaft
or
- stop the relation between camshaft and valves

Anything that has to be phased feels a little to difficult for my DIY approach so it kills option 1.

I have heard about two concept for option 2 :
- slide the camshafts so it doesn't push cam (this needs to be phased too ...)

- have an interface follower with variable volume à la Fiat Twin Air engine.
This one begs for a rocker setup rather than a camshaft directly attacking the valve, so long for the SV engine then.

It does open avenues for Bandit engine though but I am not quite sure the later liquid cooled / injected engine still have rockers.

I have to double check what system is used on big german V8's with this feature.
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