Scott and netters The reason that you pilots are led to believe that carb heat or intake heat are not required on fuel injected applications is because they falsely believe that since there is not venturi and that the cooling fuel is introduced near the intake valve instead of the throttle plate that there is no danger of icing in the intake. As Dan pointed out, that is wrong. The air coming into the intake manifold is still being accelerated through the opening, and we spend most of our time at part throttle, with the plate creating a restriction that also causes some acceleration, and an opportunity for icing when conditions are right. A quick look in any certified aircraft cockpit will reveal an "alternate air" control that is the same as carb heat, heated air applied at the throttle plate area. Some aircraft seldom use it because of the way that the air enters the intake, ie: air is drawn in from the head area etc.... It would be foolish to not have SOME kind of engine heat to apply to the intake if needed...
Colin Rainey brokerpilot9...@earthlink.net EarthLink Revolves Around You.
