● 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
Intaken air mass (specified):
690...750 mg/stroke
---
3
Intaken air mass (actual):
Approx. intaken air
mass (specified)
4
Duty cycle of exhaust gas recirculation
valve
65...80 %
---
Evaluation: display group 3, display zone 3 - intaken air
mass (actual)
Display shows
Possible cause of fault
Fault remedy
Below specification
◆
Excessive exhaust gas recirculation
– Check exhaust gas recirculation sys-
◆
Unmetered air
– Check intake system for leaks
Above specification
◆
Engine too cold
– Warm up engine, and repeat test
◆
Insufficient exhaust gas recirculation
– Give burst on throttle
◆
Defective air mass meter -G70-
Evaluation: display group 3, display zone 4 - duty cycle of
exhaust gas recirculation valve
Display shows
Possible cause of fault
Fault remedy
Below specification
◆
Excessive exhaust gas recirculation
– Check exhaust gas recirculation sys-
◆
Unmetered air
– Check intake system for leaks
6.5.4 Display group 8 - torque limit 1
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
Industriemotoren - Industrial Engines 2009
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Workshop Manual for Diesel Engine (2.0 l/36-75 kW_EA 189) 05.2015
3
6 Measured value blocks, engine codes CPYA, CPYB, CPYC, CPYD, CPYE, CPYF, CPYG
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