FSB 210-045

Field Service Bulletin
Trucks
Volvo Trucks North
America
Greensboro, NC USA
Date
Group
6.2015
No.
210 045
Release
Page
01
1(5)
Regeneration in PTO Mode
D11, D13, D16
VAH, VHD, VN
FSB 210-045, Regeneration in PTO Mode
(June 2015)
When a vehicle is being operated in PTO mode and a diesel particulate filter (DPF)
regeneration is commanded (either automatically or manually), the engine must be run at a
speed above the minimum speeds listed in the tables below (according to the altitude and
ambient temperature in which the vehicle is being operated) so that sufficient heat can be
generated in the catalyst for regeneration to occur.
This is important to note, because the rated speed of the PTO must not be exceeded. For
example; if the maximum rated speed of the PTO is 900 rpm, the regeneration will not occur
while the PTO is engaged. When specifying a PTO for a chassis equipped with a DPF, a PTO
having a maximum rated speed above the minimum engine speed listed in the tables below
must be specified.
D11F
Ambient Temperatures in Degrees C (F)
–30° C (–22° F)
Altitude in Meters
(ft)
0° C (32° F)
30° C (86° F)
Minimum Engine Speed, RPM
Sea Level
1050
1050
1050
1951 (6400)
1100
1100
1100
4267 (14,000)
1300
1300
1300
D13F
Ambient Temperatures in Degrees C (F)
–30° C (–22° F)
Altitude in Meters
(ft)
USA70990
0° C (32° F)
30° C (86° F)
Minimum Engine Speed, RPM
Sea Level
1300
1200
1150
1951 (6400)
1300
1300
1200
4267 (14,000)
1300
1300
1400
PV729-FSB210-045_V
English
Volvo Trucks North America
Field Service Bulletin
Date
6.2015
Group
No.
Release
210
045
01
D11H
Ambient Temperatures in Degrees C (F)
–30° C (–22° F)
Altitude in Meters
(ft)
0° C (32° F)
30° C (86° F)
Minimum Engine Speed, RPM
Sea Level
1200
1200
1200
1951 (6400)
1200
1200
1200
4267 (14,000)
1250
1250
1250
D13H
Ambient Temperatures in Degrees C (F)
–30° C (–22° F)
Altitude in Meters
(ft)
0° C (32° F)
30° C (86° F)
Minimum Engine Speed, RPM
Sea Level
1250
1250
1250
1951 (6400)
1325
1325
1325
4267 (14,000)
1370
1370
1370
OBD13, OBD15, D11J
Ambient Temperatures in Degrees C (F)
–30° C (-22° F)
Altitude in
Meters (ft)
–20° C (-4° F)
–10° C (14° F)
–1° C (30° F)
and above
Minimum Engine Speed, RPM
Up to 500
(1650)
1050
1050
1050
1050
1500 (4900)
1150
1150
1150
1150
2500 (8200)
1250
1250
1250
1250
4270 (14,000)
1300
1300
1300
1300
Page
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Volvo Trucks North America
Field Service Bulletin
Date
6.2015
Group
No.
Release
210
045
01
OBD13, OBD15, D13J
Ambient Temperatures in Degrees C(F)
–30° C (-22° F)
Altitude in
Meters (ft)
–20° C (-4° F)
–10° C (14° F)
–1° C (30° F)
and above
Minimum Engine Speed, RPM
Up to 500
(1650)
1100
1100
1100
1100
1500 (4900)
1175
1175
1175
1175
2500 (8200)
1251
1251
1251
1251
4270 (14,000)
1325
1325
1325
1325
OBD13, OBD15, D16J
Ambient Temperatures in Degrees C(F)
–30° C (-22° F)
Altitude in
Meters (ft)
–20° C (-4° F)
–10° C (14° F)
–1° C (30° F)
and above
Minimum Engine Speed, RPM
Up to 500
(1650)
900
900
900
900
1500 (4900)
950
950
950
950
2500 (8200)
985
985
985
985
4270 (14,000)
1050
1050
1050
1050
Page
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Volvo Trucks North America
Field Service Bulletin
Date
6.2015
Group
No.
Release
210
045
01
Manual Stationary Regeneration
If manual stationary regenerations with the PTO engaged are required, the vehicle must be
configured as follows:
•
For US07 and US10, parameter code JAC (Enable Manual Regen during PTO) must be
set to “TRUE” in VCADS. For OBD13 and beyond, it no longer exists and the feature is on
by default.
Note: A connection to central systems is necessary in order to set parameter code JAC.
•
The PTO electrical interface must be connected to the vehicle electronic control unit
(VECU).
•
•
Manual stationary regeneration must be initiated by using the stalk switch.
The electronic hand throttle (engine speed control) must be active and set to an engine
speed greater than the minimum speeds listed in the preceding charts, taking into account
the altitude and ambient temperatures in which the vehicle is being operated.
If the vehicle is not configured as listed above, manual stationary regeneration with the PTO
engaged will not occur. When regeneration does not take place, the DPF will become sootloaded, resulting in engine derate and eventual engine shutdown.
Chassis Equipped with Clean Idle Engine
Effective January 2008, the California Air Resources Board (CARB) requires that vehicles
operated in California be equipped with engines having tamper-resistant software which limits
the time at which the engine can idle at speeds above low idle (550–700 rpm). With the
vehicle stationary and without a PTO engaged, idle time at speeds above low idle are limited
to approximately 15 minutes. After 15 minutes, the Engine Management System (EMS) will
command the engine to revert back to low idle.
When installing a PTO on a vehicle equipped with a Clean Idle engine, it is very important that
the PTO be activated by a switch that provides both engagement and speed inputs to the
VECU so that the EMS knows when, and at what speed the PTO is operating. If the PTO is
activated through a pneumatic actuator with no electrical input to the vehicle control system,
the Clean Idle function will command the engine back to low idle after approximately 15
minutes, This may result in possible damage to the PTO, equipment or to the product being
unloaded.
Aftertreatment System Conditioning (ASC)
Effective mid-March 2008, an Aftertreatment System Conditioning (ASC) function was
implemented into the engine management system software. This function increases engine
speed periodically in order to increase the temperature inside the diesel particulate filter so
that unburned diesel fuel can be oxidized. On these chassis, it is important that PTO be
activated by a switch which provides PTO engagement and speed input to the VECU so that
the EMS knows the status of the PTO. If the engine speed control and PTO engage inputs
are not enabled and the PTO is engaged, the ASC function will increase engine speed when
commanded, resulting in damage to the PTO, equipment or to the product being unloaded.
The ASC function will not increase engine speed if the heat mode target speed is greater than
the speed selected with the engine speed control.
Page
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Volvo Trucks North America
Field Service Bulletin
Date
6.2015
Group
No.
Release
210
045
01
Summary of PTO Engagement Information
•
For vehicles equipped with diesel particulate filter, the PTO MUST be activated by a switch
that provides both engagement and speed information to the VECU when the PTO is
engaged, and the vehicle operator must use engine speed control to set engine speed
when the PTO is in operation.
•
For vehicles equipped with diesel particulate filter, and prolonged periods of engine idle
time are required, the engine speed control SHOULD NOT be used to increase engine
speed. The engine must be allowed to idle as normal. If prolonged engine idling is
necessary, it is recommended that the EMS ECU be programmed with CARB compliant
files.
•
For vehicles with a diesel particulate filter and a Clean Idle engine, the PTO MUST be
activated by a switch that provides engagement and speed information to the VECU when
the PTO is engaged, and the vehicle operator MUST use engine speed control to set
engine speed when the PTO is in operation.
Note: The optional PTO dedicated switches provide input information to the VECU only. The
VECU cannot provide a signal to engage a PTO.
Note: In general, a front engine-mounted PTO does not require speed or engagement
information to the VECU except for those instances where the engine speed must NOT be
lowered during PTO operation. As an example, in concrete mixer applications when an
increase in engine speed is required to rotate the barrel at a faster speed, PTO input to the
VECU is required and engine speed control must be enabled, otherwise, engine speed may
either revert to low idle or may increase due to the lack of interaction with the engine
management system.
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