Off-road duty cycles never reach regeneration temperature. This matrix lists mounting position and selection checks for fifteen vehicle types, each with its own dual-term page.
| Vehicle coverage | Off-road / airport GSE / genset |
|---|---|
| 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 |
Off-road machines do not run like road trucks. A loader cycles between idle and full load all day, exhaust temperature never climbs, and a wall-flow substrate cannot burn off what it traps. A five-tonne forklift working indoors often never sees 200 °C. That is why we recommend water-wash metal elements for off-road retrofits: regeneration is triggered by backpressure, not temperature.
What differs between machines is where the purifier can physically sit, how much backpressure the original system can absorb, and whether the element can be removed for washing without dismantling half the machine.
| Vehicle | Common search terms | Typical displacement | Usual mounting position |
|---|---|---|---|
| Forklift | forklift black smoke purifier / forklift DPF | 2.5–10 L | Behind counterweight, opposite the mast |
| Wheel loader | loader black smoke purifier / wheel loader DPF | 6–13 L | Engine hood side, opposite the boom |
| Excavator | excavator black smoke purifier / excavator DPF | 3–16 L | Upper hood, on the revolving frame |
| Mobile crane | crane black smoke purifier / crane DPF | 6–12 L | Chassis side rail, superstructure deck |
| Road roller | road roller black smoke purifier / roller DPF | 4–9 L | Hood side, behind the canopy |
| Bulldozer | bulldozer black smoke purifier / dozer DPF | 8–16 L | Above the hood, behind the cab |
| Tractor | tractor black smoke purifier / farm machinery DPF | 3–8 L | Hood side, after the manifold |
| Mining dump truck | mining truck black smoke purifier / haul truck DPF | 15–60 L | Frame side, ahead of the stack |
| Reach stacker | reach stacker black smoke purifier / reach stacker DPF | 9–13 L | Above counterweight, behind cab |
| Empty container handler | container handler black smoke purifier | 6–10 L | Above counterweight, beside the stack |
| Concrete mixer | mixer truck black smoke purifier / mixer DPF | 9–13 L | Chassis side rail, under the drum |
| Concrete pump truck | pump truck black smoke purifier / pump truck DPF | 9–13 L | Chassis side rail, inboard of outriggers |
| Aerial work platform | AWP black smoke purifier / access platform DPF | 2.5–6 L | Chassis side, under the turntable |
| Airport ground support | airport vehicle black smoke purifier / GSE DPF | 2–8 L | Chassis side or coaxial at the tail |
| Generator set | generator black smoke purifier / genset DPF | By set rating | Inside the room, ahead of the stack |
Exhaust temperature first. Any duty cycle that stays below 200 °C rules out temperature-based regeneration, including substrates marketed as passively regenerating — they burn on a test bed and fail in the yard.
Backpressure margin second. Measure the original backpressure at rated speed before selecting an element. Oversizing the filter is as bad as undersizing it.
Service access third. If the element cannot come out in ten minutes, it will not be washed in year three.
Buyers use both names. Workshops say black smoke purifier; OEMs and environmental contractors say exhaust gas purifier or DPF. The hardware is identical — what changes is element configuration, housing flange and bracket.
That is why each vehicle type on this site gets one page carrying both terms, rather than two URLs describing the same product. Two pages for one machine compete for one query and both lose position.
Ground support equipment has fixed exhaust diameters, ground clearance and mounting envelopes. An emergency vehicle, a baggage tractor, a service truck, a terminal tractor and a patrol pickup share no bracket, so each has its own page.
The same logic applies at ports: a reach stacker and an empty container handler both work the yard, but their counterweights and stack routing differ.
Displacement or rated power, exhaust pipe diameter, available mounting envelope (L×W×H), and daily operating hours with duty pattern. With those four, the model does not need to be guessed.
<strong>Is a DPF mandatory for off-road machines?</strong><br>It depends on local enforcement. China Non-Road Stage IV requires PEMS compliance; Thailand, Vietnam and Indonesia currently enforce smoke opacity at the tailpipe, where a missing purifier is visible immediately.
<strong>How long does washing take, and what happens to the water?</strong><br>Removal, washing and refitting takes about a minute of operator time. The runoff is carbon-laden water; after settling, the supernatant can be reused and the sludge is handled as local solid waste.
<strong>Does it cost power?</strong><br>Any loss comes from backpressure. Keep rated-point backpressure inside the original allowance and the loss is imperceptible; only oversizing causes a noticeable penalty.
<strong>Can you supply without Indian RECD certification?</strong><br>We can export, but we cannot claim compliance. RECD units must come from a CPCB-listed manufacturer, and we are not on that list — that route runs through a certified partner.
Off-road duty cycles run cool and stop-start; temperature-based substrates rarely burn clean in the field. Water washing is triggered by backpressure, not temperature.
Mounting envelope, bracket and flange differ per machine, and buyers search by machine. Each type gets its own page; the two names for the same machine stay on one page.
None in hardware. Workshops say black smoke purifier, OEMs say exhaust purifier, exporters say DPF.
Displacement, exhaust diameter, mounting envelope and daily hours are enough to select and quote.
All data above are obtained under specific test conditions; the actual solution must be engineered to site conditions. AIFILTECH provides custom design and sizing based on actual gas volume, temperature, dust characteristics and emission limits.
