SCR Service Performance Test Reference/Guide

1. SCR Service Performance Test Reference/Guide

Nathan Stock
JEP Performance
October 21 2009
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CUMMINS CONFIDENTIAL

2. SCR Service Test

When Does it Occur?
– SCR Service test automatically occurs during an insite
initiated regenerations
What does it test?
– DEF dosing degradation
– Catalyst Performance
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3. SCR Service Regen Overview

Service Regen Initiated. This test
only runs during “Insite” initiated
regenerations
SCR Service Performance Test
1000
Engine_Speed
RPM
900
800
700
600
0
10
20
30
Time (mins)
40
50
60
2.5
2
1.5
1
0.5
0
V_SCR_ANR_Val_DoserFdbk
This is the beginning of the SCR
efficiency test. The efficiency is
determined for each of the three
defined ANR’s (.5, 1.0,2.0)
0
10
20
30
Time (mins)
40
50
60
1
0.5
0
V_SCR_ANR_Val_DoserFdbk
V_SCD_flm_NM_DosingOverride
The NOx rationality test must successfully
complete before the SCR efficiency test can
begin. The NOx rationality test requires DEF
dosing to be disabled
0
10
20
30
Time (mins)
40
50
60
100
T115 10/19/2009
Cal Lower Limits
50
0
0.5
1
ANR
CUMMINS CONFIDENTIAL
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4. Insite Regen With Calterm

Use the Send Operation in Calterm (Under Editor) then you
have to use the Stationary Regen Execute Operation with
ID '10BD' and send '00' to start. (see following slides)
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5. Insite Regen With Calterm

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6. Insite Regen With Calterm

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