Datasheet Partikelsensor - Bosch Mobility Solutions

Exhaust gas treatment
Particulate matter sensor EGS-PM
1
2
3
4
Product benefits
ff Compliance with current and future emissions limits and
on-board diagnostics regulations
ff Monitoring of the diesel particulate filter (DPF) function
ff Systems expertise covering diagnostics function
and sensor
ff Communication with the engine control unit via
CAN interface
Vehicle segments
1
Sensor control unit SCU
2
Wiring harness
3
Sensor probe
4
Retaining screw
Exhaust gas treatment Particulate matter sensor EGS-PM
Dependable
technology
of the particulate matter sensor ensures reliable monitoring of
the diesel particulate filter, which helps to reduce particulate
emissions by approximately 99 %.
Task Precise and up-to-date data from the exhaust
system forms the basis for all functions – from mixture formation to exhaust gas treatment. Specialized sensors are being
developed for these functions. Tighter emissions legislation
in particular means that additional sensors are required, including the particulate matter sensor. This is used to monitor
the performance of the diesel particulate filter (DPF), which
helps to re­
d uce particulate emissions by approximately
99 percent. The particulate matter sensor is installed downstream of the DPF and can be mounted easily and quickly by
means of a retaining screw.
Reliable compliance
with emissions limits due to Bosch’s extensive know-how,
the pioneer of the particulate matter sensor.
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.
Exhaust gas treatment
Particulate matter sensor
Bosch components
1
Dosing control unit DCU/
electronic engine control
unit MDG1
2
Optional with MDG1:
heater control unit HCU-PC
3
Optional with MDG1:
glow control unit GCU
4
Supply module SM
5.1 (PC)/SM 5.2 (LD)
5
Dosing module DM 3.2/DM 3.4
6
Lambda sensor
7
Differential pressure sensor
8
NOx sensor
9
Particulate matter sensor
1
Actuators
4
Sensors
2
optional
Engine CAN
3
7
10
9
10
10
8
8
5
6
Exhaust
gas
Pollutants
reduced
Exhaust
gas
13
11
12
14
Other components
10
Temperature sensor
11
Oxidation catalytic
converter (optional: NOx
storage catalyst)
12
Diesel particulate filter
13
Mixer
14
SCR catalytic converter
AdBlue®
Electrical connection
heat/cold
Robert Bosch GmbH | PO 10 60 50 | 70049 Stuttgart | Germany | www.bosch-mobility-solutions.de
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