Stratified Charge DI with EGR (was: AFM

[Ade + Lamb Chop]

At 19:32 11/03/00 +0800, Bernd Felsche wrote:
>>That sounds incredible complecated... So presumuable there is no direct
>>throttle cable... just a fly by wire pedal and ecu does the rest???
>
>Throttle-by-wire. The driver sets the amount of torque required by
>the position of the pedal. The ECU adjusts throttle, EGR (up to
>70%), injection and ignition accordingly.

That is what I thought you mean't.

>The complication has its rewards; 15% less fuel consumption, partly
>due to increased "volumetric efficiency" because the throttle is
>often wide open... better find an updated abbreviation to replace
>WOT!

Cool... 

>The engine uses quantity-regulation at low load; the torque
>developed depends on the amount of fuel injected. The amount of air
>sucked in and ignition timing have little effect on torque.

I thought you cannot use fuel/ignition to control torque o/p? Don't you end
with exccesivly hot combustion? I can understand using EGR to control the
torque o/p... the oposite of NOS injection :-)

Ade

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