Engine | 900.91/92 in model 000.001 |
with BlueTec | |
Engine | 902.91/93 in model 000.001 |
with BlueTec | |
Engine | 904.94/95/96/97 in model 000.001 |
with BlueTec | |
Engine | 906.93/94/95/96/98/99 in model 000.001 |
with BlueTec | |
Engine | 924.91/93/94 in model 000.001 |
with BlueTec | |
Engine | 925.9 in model 000.001 |
with BlueTec | |
Engine | 926.91/92/93/95/97/98 in model 000.001 |
with BlueTec |
W14.40-1249-08
8 | AdBlue® metering device | B130 | SCR AdBlue® temperature sensor |
Location
The SCR AdBlue® temperature sensor is screwed in from the outside into the AdBlue® metering device (8). The AdBlue® metering device (8) is located at the rear right on the cylinder head.
Task
The SCR AdBlue® temperature sensor detects the current AdBlue® temperature in the AdBlue® metering device (8).
Structure
The SCR AdBlue® temperature sensor consists of a stainless steel housing with a thread and an electrical connector. A resistor with negative temperature coefficient (NTC) is located on the inside.
NTC means "Negative Temperature Coefficient": the electrical resistance decreases as temperature increases (NTC thermistor).
Function
The AdBlue® present at the SCR AdBlue® temperature sensor influences, depending on its temperature, the temperature of the measuring element inside the sensor and thus the size of the NTC resistance. The motor control module (MR) (A6) derives the associated temperature via the resistor.