Display
zone
Operating mode or component
Specification
Evaluation
1
Engine speed
2200...2450 rpm
---
2
Desired torque
xxx Nm
---
3
Torque limit
xxx Nm
---
4
Smoke limiting
xxx Nm
---
6.5.5 Display group 11 - Charge pressure control
Note
◆
To perform the test increase engine speed from 1500 rpm to
full throttle at full load. Note conditions for measurements at
full load
.
◆
The measured values must be read at an engine speed of
2300 rpm (2nd person required).
Test prerequisites
● Engine warm, coolant temperature not below 80°C
● Engine speed 2200…2450 rpm
● Engine at full load
Display
zone
Operating mode or component
Specification
Evaluation
1
Engine speed
2200...2450 rpm
---
2
Charge pressure (specified)
1620...1750 mbar
---
3
Charge pressure (actual)
1620...1800 mbar
4
Duty cycle of charge pressure control sol-
enoid valve
40...70 %
---
Evaluation: display group 11, display zone 3 - charge pres-
sure (actual)
Display shows
Possible cause of fault
Fault remedy
Below specification
◆
Leaks between turbocharger and en-
gine (charge air system)
◆
Charge pressure control defective
– Checking charge air system for leaks
– Checking charge pressure control
.
Above specification
◆
Charge pressure control defective
◆
Turbocharger defective
– Checking charge pressure control
.
◆
Defective charge pressure sender
-G31-
– -G31- Check.
3
Industriemotoren - Industrial Engines 2009
▶
Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
132
Repair Group 01 - Vehicle self-diagnosis