I've seen a few mentions regarding the 07 Turbo will be "Fuel Injected".

I thought the 06 engines were also fuel injected?

From what I could gather from wikipedia,

The 07 engines will be different: and use DGI, or Direct Gas Injection, where gas is injected directly into the combustion chamber. Sooo,... when the valve opens it accepts air ( in a turbo, pressurized air ) and the mixing takes place in the cylinder?

and I'm guessing that means the 06 engines DO have injection, but the injection is taking place into an Intake Manifold? So when the valve opens, it's taking in already mixed fuel/air from the manifold? ( and in the Supercharged versions, pressurized and already mixed? )

I guess I always thought Fuel Injection, was directly into the cylinder...

Anyway, just because I got an urge to better understand, If there is a link that will better explain some of these concepts.

Thanks!
Mark

 

to simplify it. you are correct,
the current, and all proper cars since the mid-80's have been fuel injected, although the point of entry for the atomized fuel via the injector has always been before the valve either in the intake runner or in the manifold right before the cylinderhead. the direct injection cars and engines being produced these days have a sophisticated injector mounted in the cylinderhead that injects the fuel into the combustion chamber while the piston is on the intake stroke. this promotes better efficiency due to the swirling and mixing of the fuel and air within the chamber as opposed to the mixture having to travel any distance thru runners and the like.
hope this helps

 

Thanks. So R50/R53 series have injector(s) OUTSIDE the cylinders.

Is there one injector to dispense fuel into the (manifold) area, and air (pressurized in the case of an "S" engine ) mixes with the fuel - and then travels in mixed form to the cylinder; If so would seem potential for fuel mixture to vary, depending on how far it must travel ( to which cylinder ) .

or multiple injectors that dispense in the proximity of the cylinder that is about to fire?

It does seem far more efficient to dispense fuel right into the cylinder - I assume very close to where air is entering to contol mixture.

The wikipedia noted DGI even varies WHEN the fuel is injected. In the case of low rpm / low torq / reduced fuel - it would take place during the power UP stroke - mixture would occur quickly with less time for fuel to condense out of the atomization via contact with cylinder wall.