Environmental Engineering Reference
In-Depth Information
air
3
1
fuel
2
4
5
7
6
air
18
25
air
recirculation
8
19
26
14
9
20
21
23
24
29
10
exhaust
engine
17
22
27
28
11
reinforced lines
12
13
30
15
31
32
exhaust
16
1.
2.
3.
4.
5.
air control valve
fuel filter
high pressure pump with additional pump
fuel pressure sensor
fuel tank with fuel level indicator and
electronic fuel pump
Common Rail
pressure control valve
air injector
phase sensor
revolution and relation indicator
accelerator pedal
brake indicator switch
clutch pedal
EGR valve with pressure regulator
vacuum tank
vacuum pump
17.
18.
exhaust turbocharger
intake pipe pressure and exhaust
gas temperature sensor
air flow meter
exhaust temperature sensor
wide range
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
sensor
oxidation catalyst
exhaust temperature sensor
NO sensor
X
Ad-Blue tank
Ad-Blue pump
reduction catalyst
particle filter
difference pressure sensor
engine control device
malfunctioning indicator light (MIL)
diagnosis interface
λ
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
Fig. 13.4
OBD system in self ignition engines
The OBD system must monitor the exhaust gas components, the subsystems
and the electric components, whose malfunction could lead to exceeding the
defined limits. The standardized MIL signals the errors.
Faulty injection as well as loss of compression as a result of mechanical dis-
turbances in the engine leads to incomplete combustion with increased emissions.
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