Cummins ISX11.9 CM2250 – Service Manual 200-005   Flow Diagram, Exhaust System

Flow Diagram

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Varaible Geometry Turbocharger

1. Exhaust gas in
2. Sliding nozzle – open position
3. Exhaust gas low velocity flow
4. Sliding nozzle – closed position
5. Exhaust gas high velocity flow

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EGR System

1. Exhaust valve port
2. Exhaust gas to exhaust gas recirculation (EGR) cooler
3. EGR cooler
4. Cooled exhaust gas to rear EGR transfer tube
5. EGR hose
6. EGR valve
7. EGR orifice pressure
8. EGR mass measurement flow assembly
9. EGR differential pressure sensor
10. EGR temperature sensor
11. EGR crossover tube
12. Exhaust manifold
13. Exhaust gas to aftertreatment system

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Aftertreatment System

1. Exhaust from turbocharger
2. Aftertreatment inlet NOx sensor
3. Aftertreatment fuel injector
4. Exhaust pipe with exhaust mixture
5. Aftertreatment diesel oxidation catalyst (DOC) intake temperature sensor
6. Aftertreatment diesel oxidation catalyst
7. Aftertreatment diesel particulate filter (DPF) intake temperature sensor
8. Aftertreatment diesel particulate filter differential pressure sensor
9. Aftertreatment diesel particulate filter
10. Aftertreatment diesel particulate filter outlet temperature sensor
11. Aftertreatment diesel exhaust fluid dosing valve
12. Aftertreatment decomposition tube
13. Aftertreatment selective catalytic reduction (SCR) intake temperature sensor
14. Aftertreatment SCR catalyst
15. Aftertreatment SCR outlet temperature sensor
16. Aftertreatment outlet NOx sensor
17. Exhaust flow exiting aftertreatment system