Description of engine OM 607
52
Drive
b
Introduction of the New A-Class, Model Series 176
Post injection
Post injection is used to increase the exhaust
temperature and to support the conversion process
for the exhaust components in the oxicat and the
regeneration of the diesel particulate filter (DPF). To
do so the load condition of the diesel particulate
filter is recorded with the aid of the differential pres-
sure sensor (DPF).
New to the OM 607 are the heater booster DPF
regeneration control unit and the heater booster
DPF regeneration. Increasing the engine load
through the heater booster diesel particulate filter
boosts the post injection volume far enough to
increase the exhaust temperature, and to ultimately
trigger the diesel particulate filter's regeneration
process. The soot particles in the exhaust are
subsequently burnt off.
Heater booster DPF regeneration control
unit
The heater booster DPF regeneration control unit is
located under the battery box and actuates the
heating elements of the heater booster DPF regen-
eration. It supports the thermal management as
and when required, e.g. to enable the optimum
operating temperature of the diesel particulate
filter to be reached quicker so that the regeneration
process can be executed.
P14.40-2474-00
N33/2 Heater booster DPF regeneration control unit
– This printout will not be recorded by the update service. Status: 06 / 2012 –
