wsm L3301 Workshop Manual page 160

L3301, L3901, L4701, WSM
Diesel Oxidation Catalyst (DOC)
An oxidizing catalyst set in front of the Diesel
Particulate Filter (DPF) step that uses post injection
unburned fuel to actively regenerate the DPF.
(1) Diesel Oxidation Catalyst
(DOC)
Diesel Particulate Filter (DPF)
The Diesel Particulate Filter (DPF) is a device that
captures and combusts PM in the exhaust gas.
Physically captures the PM using a filter which
spontaneously combusts when exhaust gas temperature
is high.
However, while exhaust gas temperature is low PM
does not spontaneously
differential between the inlet and outlet of the DPF is
detected and the PM is combusted using a heat source
generated using DOC to regenerate the filter.
(1) Diesel Particulate Filter
(DPF))
Intake Throttle Valve
The amount of air intake is regulated by the angle of
the throttle valve and the exhaust temperature is
controlled when regenerating the DPF muffler.
(1) Intake Throttle Valve
1-M23
ENGINE
9Y1211012ENM0041US0
combust the pressure
9Y1211012ENM0042US0
9Y1211012ENM0043US0
KiSC issued 09, 2016 A