Characteristic curve and setpoint values
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The exhaust back pressure information is sent to the engine control via a signal line. The signal for evaluation of the exhaust back pressure fluctuates depending on the pressure. The measuring range is from approx. 1.0 to 4.5 Volt. The measured exhaust back pressure is engine-specific.
| Index | Explanation |
|---|---|
| 1 | Signal voltage |
| 2 | Characteristic curve of exhaust backpressure sensor |
| 3 | Pressure |
The 6-cylinder diesel engine with 3 exhaust turbochargers has a deviating characteristic curve:
Fig 2: Exhaust Back Pressure Characteristic Curve (6-Cylinder Diesel Engine With 3 Exhaust Turbochargers)
| Index | Explanation |
|---|---|
| 1 | Signal voltage |
| 2 | Characteristic curve of exhaust backpressure sensor |
| 3 | Pressure |
Observe the following setpoint values for the exhaust backpressure sensor:
| Size | Value |
|---|---|
| Voltage range | 4.9 to 5.1 V |
| Operating pressure | 1.0 to 5.0 bar Optional: 0.6 to 6.5 bar |
| Response time | less than 5 ms |
| Maximum output current | 15 mA |
| Temperature range | -30 °C to 120 °C |