Sullivan-Palatek D260UJD4PTOW, Руководство пользователя

Страница: 36 / 136

28 INSTAllATIoN AND oPERATIoN
4.8 ENGINE REGENERATION PROCESS
The John Deere 4045 Final Tier 4 after treatment system is comprised of a Diesel oxidation Catalyst (DoC)
and a Diesel Particulate Filter (DPF). The DPF captures diesel particulate matter to prevent release into the
atmosphere. Accumulated matter must be periodically eliminated from the DPF. This process is controlled
by the Engine Control unit (ECu) and is called “exhaust filter cleaning” or Regeneration. During the
Regeneration process, a rise in exhaust temperature occurs and allows the matter to be oxidized within the
DPF. The DPF will require periodic maintenance, some of which will be occur automatically. When the exhaust
filter has accumulated higher levels of soot, the display panel will indicate an exhaust filter cleaning is
necessary. The machine requires relocation to a suitable location with adequate ventilation while performing
an exhaust filter cleaning.
both the DPF and DoC have been registered with your specific engine during engine programming.
Replacement of either the DoC or DPF will require new programming to be performed on the ECu–please
contact your local John Deere service center. For more information on how the exhaust filter works consult
the after treatment system section in the John Deere engine manual.
The Regeneration process includes six stages of exhaust filter cleaning. (See Figure 4-1 )
The engine ECu is designed to naturally clean the exhaust filter at high engine loads where higher exhaust
temperature levels are reached. This is referred to as “Natural Regeneration”. on the instrument panel
Main Menu screen you will see EXhAuST FIlTER status followed by a number 0 through 5. During Natural
Regeneration no action is required by the operator and EXhAuST FIlTER status shows 0.
Eventually, Natural Regeneration will not be enough to fully reduce the DPF soot levels and the following
codes will appear on the instrument panel informing the operator that an exhaust filter cleaning is required.
» Diagnostics Trouble Code (DTC)
» Suspect Parameter Numbers (SPN) code
»
Failure Mode Identifier (FMI) code
at this point the operator can either perform an automatic Regeneration (stage 1), or skip automatic
Regeneration.
WARNING! The exhaust filter cleaning can only be skipped/disabled twice, and then a manual or parked Regeneration
must be performed.
The compressor is factory set with active automatic Regeneration. To perform a manual or parked
Regeneration, refer to 4.9 Sullivan-Palatek Electronic Controller (SPEC) Operating Instructions on page 30
for instructions.
Figure 4-1. REGENERATION/OPERATOR INTERFACE STRATEGy