Step Basic Injection Duration

The first step involves calculation of basic injection duration. Input sensors used in basic duration calculation are:

• Manifold Pressure Sensor (PIM)

The ECU calculates basic injection duration based upon engine speed and air flow volume. These two inputs considered together establish an engine load factor. The eCu monitors the Air Flow Meter signal or Manifold Pressure Sensor for intake air volume information and the Ne signal for engine speed information.

• As either of these parameters increase, injection duration is increased.

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