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MECHANISM
9. Aftertreatment system
9. Aftertreatment system
9.1 Structure of diesel particulate
filter (DPF) system
The diesel particulate filter (hereinafter referred to as
the "DPF") system is made up of a diesel oxidation
catalyst (hereinafter referred to as the "DOC"), DPF,
exhaust gas temperature sensor, and a differential
pressure sensor.
(1) Exhaust gas temperature
sensor (T
)
2
(2) Body (DPF outlet)
(3) Filter comp (DPF)
(4) Differential pressure sensor
9.2 Feature of diesel particulate filter
(DPF) system
The DPF system captures particulate matter (PM) such
as soot and ash contained in exhaust gas and performs
aftertreatment on it.
The PM captured is combusted in a regeneration
process and separated into carbon dioxide and ash.
The carbon dioxide is released to the atmosphere and
ash accumulated in the DPF.
9.3 Flow of diesel particulate filter
(DPF) system
03-CR-E4,03-CR-TE4BG
(5) Exhaust gas temperature
sensor (T
)
1
(6) Catalyst (DOC)
(7) Exhaust gas temperature
sensor (T
)
0
(1) Exhaust manifold
(2) Exhaust gas temperature
sensor (T
)
0
(3) Exhaust gas temperature
sensor (T
)
1
(4) Differential pressure sensor
(5) Exhaust gas temperature
sensor (T
)
2
1. Exhaust gas that passes through the exhaust
manifold flows into the catalyst (DOC) (7).
2. Exhaust gas that passes through the catalyst
(DOC) (7) flows into the filter comp (DPF) (8).
3. PM is captured by the filter comp (DPF) (8).
4. Flows from the filter comp (DPF) (8) assembly to
the outside.
4. ENGINE
(6) Outside
(7) Catalyst (DOC)
(8) Filter comp (DPF)
(9) Body (DPF outlet)
(A) DPF assembly
4-75
KiSC issued 02, 2021 A
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