Installation Manual
Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 209
without any operator interaction; however, under some conditions when
circumstances do not allow sufficient temperature increase, the strategy will
demand an elevated engine speed up to 1200rpm.
16.2.1.1 Elevated Idle Regeneration Operation
If the system has established that an elevated engine speed is required to
facilitate aftertreatment regeneration the engine will broadcast this
requirement via the PGN / SPN shown in table 16.2
J1939 PGN
Parameter Number
SPN reference
State
SCR System
Cleaning (SCRSC)
64586 6916 00 Not Active
01 Active
10 SCR System
Cleaning Needed
11 Not Available
Table 16.2 SCR System Cleaning PGN
Upon SPN6916 (SCR System Cleaning Status – 10 SCR system cleaning is
needed) becoming active the engine will only take control of engine speed if
the associated wiring is completed (see section 16.2.1.3).
16.2.1.2 Elevated Idle Regeneration Configuration
This strategy is always enabled and will activate automatically when the wiring
shown in section 16.2.1.3 is completed. The engine speed increase to
1200rpm is fixed and is non configurable.
16.2.1.3 Elevated Idle Regeneration Installation
The Low Speed Regeneration strategy is enabled by connecting ECM J1 pin
74 regen readiness to the ECM J1 switch to ground return pin 36.
Figure 16.1 Aftertreatment Elevate Engine Speed Input
The implementation of the Regen Readiness input on machine is a
mandatory requirement to ensure that the Aftertreatment system can maintain
operation under all conditions. The OEM may connect this input via a relay
controlled by the machine MCU for example to only ground when certain
conditions are met such as SCR Cleaning State = 10 and machine in neutral
etc.
16.3.2 Low Temperature Regeneration 1204F & 1206F DOC, DPF +
SCR Products
The products supplied by Perkins fitted with a DPF require DPF regeneration
using the Low Temperature regeneration strategy. DPF regeneration is
performed continuously throughout the engine operation without the need of
any operator interaction.