LEMON Manuals: Even more car manuals for everyone
Home >> BMW >> 2013 >> Z4 28i, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1445 (Functional Description - F10 - Engine Performance) >> Engine Performance - Functional Description >> Pressure converter, wastegate valve >> Characteristic curve and setpoint values

Characteristic curve and setpoint values

WARNING: This page does not describe the selected car, but rather 45 other vehicles, including the 2016 BMW M5, 2016 BMW 550i xDrive, 2016 BMW 550i, 2016 BMW 535i xDrive, and 2016 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.

The pressure converter is activated by a pulse-width-modulated signal. The duty cycle is between 15 and 65 % (depending on engine operation). The supply vacuum is 700 mbar. Depending on the duty cycle, the vacuum can be continuously adjusted.

Fig 1: Pressure Converter Characteristic Curve
G09910123Courtesy of BMW OF NORTH AMERICA, INC.

Characteristic curve valid for 950 mbar

Index Explanation
1 Vacuum activation
2 Maximum characteristic curve
3 Minimum characteristic curve
4 Duty cycle

Observe the following setpoint values for the wastegate valve pressure converter:

Size Value
Voltage range 10.8 to 16 V
Duty cycle (depending on engine operation) 15 to 65%
Control voltage frequency 300 Hz
Vacuum build-up response time 200 ms
Resistance at 20 °C 9.8 to 11.2 Ω
Temperature range -40 °C to 140 °C