Underground mine work lighting

Explaining Backpressure for DPF’s and exhaust systems

Being a filter, DPF’s can restrict flow through the exhaust which is also known as backpressure.

All MineBase DPF’s are tested to ensure that there is no extra flow through restriction before it leaves the factory. However, once the filter is commissioned, naturally they start to block up with particulates. This in turn restricts the flow levels from that of a brand new unit.

DieselNet Technology Guide explains Backpressure as: “Engine exhaust Backpressure is defined as the exhaust gas pressure that is produced by the engine to overcome the hydraulic resistance of the exhaust system in order to discharge the gases into the atmosphere. For this discussion, the exhaust Backpressure is the gauge pressure in the exhaust system at the outlet of the exhaust turbine in turbocharged engines or the pressure at the outlet of the exhaust manifold in naturally aspirated engines.”

Therefore it is very important that you have your DPF’s regularly serviced and cleaned. This prevents excess Backpressure damaging your engines. MineBase offer service follow-ups to remind you when your DPF needs to be cleaned.

Please see the diagram below showing how Backpressure works.

Explaining How Back Pressure Works
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