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Home >> BMW >> 2013 >> 535i GT >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Engine Performance - Functional Description -- F07 >> Engine Performance - Functional Description >> Injector >> Activation and setpoint values
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Activation and setpoint values

Vehicle voltage is supplied to the engine control. The engine control contains a DC/DC converter that steps up the voltage required for activation of the injector. The injector is activated by the engine control on the ground side.

Fig 1: Injection Time Period Graph
G09872658Courtesy of BMW OF NORTH AMERICA, INC.
Index Explanation
1 High voltage
2 Injection signal
3 Time
4 Injection period

Observe the following setpoint values for the injector:

Size Value
Maximum supply voltage 190 Volts
System pressure 5 to 20 MPa
Opening period, closing period 100 to 200 μs
Dynamic flow at 0.4 ms 14.5 mg/stroke
Temperature range -30 °C to 140 °C
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