Yanmar Engine; Diesel Particulate Filter (Dpf) - Toro Groundsmaster 7210 Service Manual

Engine Electronic Control Unit (ECU) (continued)

Yanmar Engine

Diesel Particulate Filter (DPF)

Diesel Engine: General Information
If the engine ECU identifies that an engine problem exists, the engine speed may
be reduced or the engine may shut off. The Yanmar troubleshooting manual and
electronic diagnosis tool and should be used to provide assistance in identifying
the cause of the problem and the repairs that are necessary. Contact your Toro
distributor for assistance in Yanmar engine troubleshooting.
g036118
The engine used on your Groundsmaster is a Yanmar TNV Series, diesel engine
that complies with EPA Tier 4F emission regulations. The engine features
include an electronic control unit (ECU) that controls a common rail fuel injection
system with direct injection, water- cooled exhaust gas recirculation (EGR), an
electronic governor, an exhaust system diesel oxidation catalyst (DOC), and
an exhaust diesel-particulate filter (DPF) with active regeneration. Glow plugs
are used to assist starting the engine. Numerous engine sensors are used to
allow the engine ECU to monitor and control the engine operation for optimum
engine performance.
The engine ECU, combined with numerous engine sensors, monitor and control
the engine operation for optimum performance. During the operation of the
engine, if conditions warrant, the engine ECU may generate an engine fault. Use
the machine InfoCenter to identify the engine fault; refer to
(page 5–16), the Yanmar Troubleshooting Manual, or contact an Authorized
Toro Distributor for assistance.
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
Figure 7
Page 3–4
Starting Problems
Groundsmaster 7210
16222SL Rev C