User Manual

Chapter 13

BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER

113

C - PARTICLE FILTER LOAD LEVELS

SDI041D

900

D - Exhaust gas volume flow (l/h)

E - Pressure differential (mbar)

a - Filter punctured

b - Filter regenerated

c - Intermediate zone

d - Filter loaded

e - Filter overloaded

f - Filter clogged

Note: These statuses can be read using the diagnostic tool, in parameter

measurements.

Zones "a" - "f" represent the possible clogging levels of the particle filter. The aim

of the injection ECU is to be permanently in zone "b" or "c" (regardless of vehicle

mileage).

When leaving zone "c" to go to zone "d" (at a variable speed depending on

driving conditions), the injection ECU requests regeneration assistance to return

to zone "b" or possibly "c" (depending on driving conditions).

Note: Zones "a" and "f" are zones where the pressure differential is abnormal.

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