Diesel Particulate Filter - Toro Groundsmaster 5900 Series Service Manual

Diesel Particulate Filter

Regeneration
Types of regeneration that are performed automatically (while the machine is operating)
Type
Passive
Yanmar Diesel Engine: General Information
The diesel particulate filter (DPF) used on Yanmar Tier 4F compliant engines is
designed to breakdown the hazardous elements in the exhaust and prevent the
discharge of unburnt fuel or oil known as particulate matter or soot. The DPF
includes a Diesel Oxidation Catalyst (DOC), a Soot Filter (SF), 2 temperature
sensors, and a pressure differential sensor. Additional information regarding the
Diesel Particulate Filter (DPF) can be found in the Yanmar Operator's Manual –
Industrial Engines TNV supplied with your machine.
The engine ECU monitors the exhaust pressure before and after the soot filter
in the DPF to determine if soot is accumulating. If soot is accumulating during
normal engine operation, the pressure differential will increase. The increase
in pressure will signal the engine to begin a process called Regeneration.
Regeneration increases the exhaust temperature and the length of time the
engine operates at a higher than normal exhaust temperature, incinerating the
built up soot and turning it into ash. The different types of regeneration used are
listed in order based on the amount of particulate matter in the soot filter (least
to most).
Note: The user interface and InfoCenter displays for DPF regeneration changed
with machine software 122−0310J. Use the InfoCenter About screen to verify
the software installed on the machine.
•
For machines with software 122−0310A thru H: Complete DPF
regeneration instructions can be found in the updated traction unit Operator's
Manual for the specific machine. Visit www.toro.com to download the updated
traction unit Operator's Manual for the machine.
•
For machines with software 122−0310J and up: Complete DPF
regeneration instructions can be found in the traction unit Operator's Manual.
Visit www.toro.com to download the traction unit Operator's Manual with the
correct DPF regeneration instructions for the machine.
Conditions
Occurs during normal operation of the
machine at high engine speed or high
engine load.
Description
The DPF processes high heat exhaust
gasses, oxidizing harmful emissions
and incinerating soot to ash.
The InfoCenter does not display an icon
during passive regeneration.
Page 4–6 Groundsmaster ® 5900 & 5910
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