Calibration & setup, Calibration tables – MoTeC M84 User Manual

Page 9

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MoTeC

Overview

7

Calibration & Setup

Calibration Tables

The Calibration Tables determine how the output devices should be controlled
for various sensor readings. For example, the fuel calibration table determines
the base injector pulse width for all combinations of RPM and Load. Other
calibration tables will also affect the fuel injector pulse width such as Air
Temperature compensation and Engine Temperature compensation.

The ECU determines the amount of fuel to inject by first calculating the RPM
and Load then extracting the corresponding value from the table. If the RPM
and Load do not match an RPM and LOAD point exactly then the values from
the closest sites are mathematically interpolated to arrive at an intermediate
value.

A typical 3 dimensional fuel calibration table is shown below.

The calibration tables may also be represented graphically as shown below.

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