Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 210
16.3.2.1 Low Temperature Regen (DPF) Operation
Low Temperature Regeneration of the engine DPF requires temperatures in
the region of 250 > 400DegC during machine operation. The regeneration
control strategy also uses the exhaust backpressure valve when required to
help elevate engine exhaust temperatures to allow the regeneration to take
place.
The DPF soot loading example shown in figure 16.2 indicates three scenarios
of operation (please note that real life operation is likely to be a combination of
these scenarios but they have been split here for information purposes). The
three scenarios are;
• An engine being used with a moderate to high duty cycle that is not
exposed to low ambient temperature operation.
• An engine being used with a low duty cycle, with operation in cold
ambient conditions.
• A soot load trace for an engine being used with high sulphur fuel or
regeneration system failure.
Figure 16.2 DPF Soot Loading Examples
Table 16.3 describes the system operation as the DPF soot loading increases
and decreases throughout the monitoring system loading categories.
116%
127%