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Home >> Audi >> 1986 >> 5000 CS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH Cis-E >> Operation >> Fuel Supply >> Maximum Engine Speed
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Maximum Engine Speed

ECU senses engine speed based on impulses from terminal "TD" of ignition switching unit. Engine speed is limited by changing current to differential pressure regulator from ECU. Lower chamber pressure is increased to system pressure and fuel supply to injection valves is interrupted.