DL06K Interim Tire-4 Diesel Engine Disassembly and Reassembly of Major Components
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3.6.3. Diesel oxidation catalyst : DOC
z Introduction
DOC is a device where HC and CO are oxidized. DOC also raises the
temperature of DPF by helping oxidization of HC (diesel) sprayed during the
active regeneration mode while transforming NO into NO2 to cause the passive
regeneration of soot inside DPF.
A few temperature sensors are attached on the front side of DPF system to be
able to control the temperature of DOC during the generation mode.
z Removal
Temperature sensor on DOC should be removed first and checked for damage
and rust. DOC must be handled with care to avoid damage.
(Installation and replacement, assemble and disassemble refer to chapter 3.6.5.)
z Installation and replacement
Differental pressure sensor
Exhaust Gas Outlet
Exhaust Gas Inlet
Temperature sensor
Removable DPF
(for ash clean)
EL4OM017
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