Lainaus:
Alkuperäinen kirjoittaja pee
... joo !
oikeastaan just tuo, että mitä se kertoo ajoituksesta kenelle, milloin ja miks, on se mikä mua eniten kiinnostaa ...
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Hirmu pitkän sepustuksen kirjoitin, mutta tuossa se on (ilmeisesti) tehtaan manuaalissa selkeämmin kerrottu:
Lainaus:
The actual time that the fuel is delivered is very
important to the diesel combustion process. The ECM
monitors outputs from the engine speed sensor (flywheel position in degrees), and the fuel injector sensor (mechanical movement within the #1 cylinder
fuel injector). Outputs from the Accelerator Pedal
Position sensor, engine speed sensor (engine rpm)
and engine coolant temperature sensor are also used.
The ECM will then compare its set values to these
outputs to electrically adjust the amount of fuel timing (amount of advance) within the injection pump.
This is referred to as “Closed Loop” operation. The
ECM monitors fuel timing by comparing its set value
to when the injector #1 opens. If the value is greater
than a preset value a fault will be set.
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Lainaus:
An
injector containing a sensor (Fig. 5) is used on the
cylinder number one injector. This injector is called
instrumented injector #1 or needle movement sensor.
It is used to tell the ECM when the #1 injector’s
internal spring-loaded valve seat has been forced
open by pressurized fuel being delivered to the cylinder, which is at the end of its compression stroke.
When the instrumented injector’s valve seat is force
open, it sends a small voltage spike pulse to the
ECM. This tells the ECM that cylinder #1 is firing.
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http://www.gianecri.it/WJ/2000%20WJ/ewj_14a.pdf