Exhaust gas treatmentParticulate matter sensor EGS-PM

Sensor control unit SCU

Wiring harness

Sensor probe

Retaining screw

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Product benefits

f Compliance with current and future emissions limits and on-board diagnostics regulations

f Monitoring of the diesel particulate filter (DPF) function

f Systems expertise covering diagnostics function and sensor

f Communication with the engine control unit via CAN interface

Vehicle segments

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78

9

10 10

5

3

810

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Engine CAN

optional

Actuators Sensors

Exhaust gasPollutantsreduced

Exhaustgas

Bosch componentsDosing control unit DCU/electronic engine controlunit MDG1Optional with MDG1:heater control unit HCU-PC

Optional with MDG1:glow control unit GCUSupply module SM5.1 (PC)/SM 5.2 (LD) Dosing module DM 3.2/DM 3.4Lambda sensorDifferential pressure sensorNOx sensorParticulate matter sensor

Other componentsTemperature sensorOxidation catalyticconverter (optional: NOx storage catalyst)Diesel particulate filterMixerSCR catalytic converter

AdBlue®Electrical connectionheat/cold

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Exhaust gas treatmentParticulate matter sensor

Exhaust gas treatment Particulate matter sensor EGS-PM

Robert Bosch GmbH | PO 10 60 50 | 70049 Stuttgart | Germany | www.bosch-mobility-solutions.dePrinted in Germany 292000P1GK-2015-DS © Robert Bosch GmbH 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Task Precise and up-to-date data from the exhaust system forms the basis for all functions – from mixture forma-tion to exhaust gas treatment. Specialized sensors are being developed for these functions. Tighter emissions legislation in particular means that additional sensors are required, includ-ing the particulate matter sensor. This is used to monitor the performance of the diesel particulate filter (DPF), which helps to re duce particulate emissions by approximately 99 percent. The particulate matter sensor is installed down-stream of the DPF and can be mounted easily and quickly by means of a retaining screw.

Function The operating principle of the particulate matter sensor is based on the measurement of resistance. Soot particulates are deposited on an electrode structure and form conductive soot paths between the electrodes. Before each measurement phase, the sensor element is regenerated by heating in order to ensure it is in a predefined state at the start of the measurement process. The DPF diagnostic soft-ware then analyzes the DPF performance on the basis of the measured current.

dependable

technology

reliable compliance

of the particulate matter sensor ensures reliable monitoring of the diesel particulate filter, which helps to reduce particulate emissions by approximately 99 %.

with emissions limits due to Bosch’s extensive know-how, the pioneer of the particulate matter sensor.