C7 and C9 On-Highway Engines Caterpillar


Emissions Parameters

Usage:

C7 C7S

"Aftertreatment Regeneration Device Vehicle Speed Threshold"

Active regeneration is inhibited when the vehicle speed falls below the value of this parameter.

Table 1
Default     Minimum     Maximum    

8 km/h (5 mph)    

0 km/h (0 mph)    

204 km/h (127 mph)    

"Aftertreatment Regeneration Disable Switch Configuration"

This parameter identifies the Engine Control Module (ECM) connection for the "Aftertreatment Regeneration Disable Switch".

Table 2
Default     Alternatives    
Not Programmed     J1/P1-6, 7, 22, 23, 45, 40, 44, 45, 46, 47, 56, 58, 59, 60
J1939 Body Controller
J1939 Cab Controller
J1939 Instrument Cluster    

"Aftertreatment Regeneration Force Switch Configuration"

This parameter identifies the ECM connection for the "Aftertreatment Regeneration Force Switch".

Table 3
Default     Alternatives    
Not Programmed     J1/P1-6, 7, 22, 23, 45, 40, 44, 45, 46, 47, 56, 58, 59, 60
J1939 Body Controller
J1939 Cab Controller
J1939 Instrument Cluster    

"Diesel Particulate Filter Lamp Configuration"

This parameter identifies the ECM connection for the "Diesel Particulate Filter Lamp".

Table 4
Default     Alternatives     Output    
J1/P1:31     J1/P1: 10, 11, 12, 13, 19, 20     High Side Driver    
J1/P1: 29, 30, 31 Low Side Driver    

"Diesel Particulate Filter Lamp Vehicle Speed Threshold"

The "Diesel Particluate Filter Lamp" and the "High Exhaust Temperature Lamp" are illuminated when the vehicle speed falls below the value of this parameter.

Add additional paras for detailed operation.

Table 5
Default     Minimum     Maximum    

32 km/h (20 mph)    

32 km/h (20 mph)    

204 km/h (127 mph)    

"High Exhaust System Temperature Lamp Configuration"

This parameter identifies the ECM connection for the "High Exhaust System Temperature Lamp".

Table 6
Default     Alternatives     Output    
J1/P1:30     J1/P1: 10, 11, 12, 13, 19, 20     High Side Driver    
J1/P1: 29, 30, 31 Low Side Driver    

"High Exhaust System Temperature Lamp Diesel Particulate Filter Outlet Temperature Threshold"

The "High Exhaust System Temperature Lamp" is illuminated whenever the outlet temperature of the diesel particulate filter exceeds the value of this parameter.

Table 7
Default     Minimum     Maximum    

400 °C (752 °F)    

400 °C (752 °F)    

750 °C (1382 °F)    

"High Exhaust System Temperature Lamp Strategy"

This parameter defines the operation of the "High Exhaust System Temperature Lamp".

"Diesel Particulate Filter Outlet Temperature" - The "High Exhaust System Temperature Lamp" is illuminated whenever the outlet temperature of the particulate filter exceeds the value of the "High Exhaust System Temperature Lamp Diesel Particulate Filter Outlet Temperature Threshold" parameter.

"Regeneration Only" - The "High Exhaust System Temperature Lamp" is illuminated only during an active regeneration.

Table 8
Default     Alternative    
Diesel Particulate Filter Outlet Temperature     Regeneration Only    

"Aftertreatment Regeneration Device Fan Enable Vehicle Speed Threshold"

The cooling fan will operate when the vehicle speed goes below the value of this parameter and an active regeneration is occurring.

Note: The ECM must control the cooling fan in order for this parameter to affect the operation of the cooling fan.

Table 9
Default     Minimum     Maximum    

32 km/h (20 mph)    

32 km/h (20 mph)    

204 km/h (127 mph)    

"Aftertreatment Regeneration Device Stationary Regeneration Strategy"

This parameter allows the operator to force an active regeneration when the vehicle's speed is zero.

Disabled - The operator cannot force an active regeneration when the vehicle's speed is zero. However, an active regeneration can be forced via the Caterpillar Electronic Technician (ET).

Enabled - The operator can force an active regeneration when the vehicle's speed is zero.

Table 10
Default     Alternative    
Disabled     Enabled    

"Aftertreatment Regeneration Device Programmable Regeneration Monitoring System"

This parameter determines the level of action that is taken by the ECM if there is a possible problem with the particulate filter.

Table 11
Default     Alternatives    
Derate     Warning (1)
Shutdown    
( 1 ) "Warning" is only available for emergency vehicle ratings.

"Aftertreatment Regeneration Device Manual Disable Status"

Set this parameter to "Disabled" in order to prevent an active regeneration from occurring. For example, set this parameter to "Disabled" when you are troubleshooting or servicing the components of the exhaust system. A diagnostic code is set when this parameter is set to "Disabled".

Note: This parameter is automatically set to "Not Disabled" when the keyswitch is cycled.

Table 12
Default     Alternative    
Not Disabled     Disabled    

"Number of Diesel Particulate Filters"

This parameter identifies the quantity of particulate filters that are installed on the vehicle. This parameter must be programmed to the correct value in order for the aftertreatment regeneration device to function correctly.

Table 13
Default     Alternative    
1     2    

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