AFM measurement/backpressure

[Ade + Lamb Chop]

At 09:34 11/03/00 +0800, Bernd Felsche wrote:
>>>None that I can recall.  Lucas/Bosch systems use them, and patent
leasees of
>>>them.
>>>Numerically probably MAP is most common, then hot wire, and then combos of
>>>MAP/hot wire.
>
>>So what is the best way?? The rover system uses MAP and inlet air
>>temperature...
>
>Even hot-wire is passé. :-)

How does hot wire work?? Is is a little heater that uses X power then you
measure the temperature... more airflow the more heat is taken from the
heater?? Surely you would also need air temperature, or am I completly off...

>The latest Bosch MED Motronic (for direct-injection (DI),
>stratified-charge gasoline engines) uses a version of hot-film
>(HFM5) that's sensitive to the flow direction. That's necessary with
>the DI system because they run it with WOT at low loads, using
>controlled, external EGR to reduce the engine's output - by varying
>its displacement if you like.

That sounds incredible complecated... So presumuable there is no direct
throttle cable... just a fly by wire pedal and ecu does the rest???

Ade

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