
Engine management
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• After-start enrichment.
• Operational enrichment.
• Acceleration enrichment.
• Weakening on deceleration.
• Cut-off on over-run.
• Reinstatement of injection after cut-off.
• Correction for battery voltage variation.
Under starting conditions the injection period is calculated differently. This is
determined from a set gure varied as a function of temperature.
Figure 9.55 is a ow diagram to represent the overall process of calculating
fuel and ignition settings.
9.5.5 Developing and testing software
There is, of course, more than one way of producing a ‘computer’ program.
Most programs used in the electronic control ...