Table of Contents
Advertisement
3. INPUT/OUTPUT DEVICES
1.
Front temperature sensor: This sensor is installed at the inlet of DOC and detects whether
the DOC can burn (oxidize) the post-injected fuel or not.
2.
Rear temperature sensor: This sensor is installed at the inlet of DPF and monitors that the
temperature of the exhaust gas is kept at 600℃.
If the temperature exceeds 600℃, the life of CDPF can be reduced. So the amount of fuel
-
post-injection is decreased.
If the temperature drops under 600℃, the rate of regeneration can be decreased. So the
-
amount of fuel post-injection is increased.
3.
Differential pressure sensor: This sensor checks the amount of PM collected by calculating the
pressure difference between before and after the CDPF.
4.
Electric throttle valve: This valve reduces the intake air flow to raise the temperature of the
exhaust gas when the CDPF is operating during idling.
14-9
2412-02
Advertisement
Table of Contents
Troubleshooting
