A dozer runs hotter than an excavator but works in far more dust, so the element loads faster. This unit carries extra soot capacity and a quick-release body so crews actually wash it.
| Vehicle | Bulldozer Black Smoke Purifier (Bulldozer DPF) |
|---|---|
| Mounting | Custom bracket per model |
| Element | Water-wash metal filter |
| Regeneration | 1-minute water wash |
| PM efficiency | 90%+ at rated conditions |
| Patent | ZL 2018 1 0598975.7 |
| Brand | AIFILTECH |
| Customisation | Yes |
A dozer usually runs hotter than an excavator, which helps any substrate. The problem is dust: during pushing, backfilling and grading, the outlet sits in a cloud of grit, so the element collects a layer of soil on top of the soot.
On this machine type we do not chase maximum soot capacity. We make removal fast — two clamps off, housing out — because a crew will only wash what it can reach quickly.
On a crawler dozer the stack sits forward or mid-hood with the cab behind. The purifier mounts axially on the stack, raised no higher than the cab roof so fore-and-aft visibility is unaffected. Low-profile swamp dozers usually switch to a side outlet.
The outlet must clear the hydraulic tank and the radiator intake face; a dozer under sustained load is already hot at both.
Expect a shorter wash interval than an excavator of the same displacement. Backpressure still decides, but in heavy dust check the element surface as well — if a mud cake has blinded the mesh before the gauge reads high, clean it early.
Service the air filter on the same schedule. Dirty intake air means poor combustion and high smoke, and no aftertreatment can compensate for that.
Selection uses displacement, exhaust diameter and the space available under the hood. Brackets are drawn per model. Common machines have existing drawings; non-standard units need site measurement or 3D data.
<strong>Will a purifier overheat a dozer?</strong><br>The unit generates no heat of its own but occupies hood volume. Keep the convection path below it open and do not lay the housing against hydraulic lines.
<strong>Does it work in mining?</strong><br>Yes, but reset the wash interval for the site dust load — usually shorter than on a construction site.
<strong>Can the whole unit be quick-release?</strong><br>Yes. Quick-release clamps are standard on this machine type.
