Passive Regeneration is an approach used to oxidise Particulate Matter (PM) in the Diesel Particulate Filter (DPF). In contrast to higher temperature Active Regeneration, Passive Regeneration uses normal exhaust temperatures and Nitrogen Dioxide (NO2) as the catalyst to oxidise PM in the DPF. Users benefit from the simplicity of the passive regeneration process, and fewer components make it a lightweight and easily installed solution.
Euro Stage V/U.S. EPA Tier 5 Final emissions standards have reduced the amount of Particulate Matter (commonly known as soot) entering the atmosphere by up to 98% when compared with emissions from non-regulated engines. Ultra-fine Particulates pass through and are captured by the DPF. This achieves the required reduction without compromising machine reliability and productivity. Over time, these Particulates build up, causing a blockage in the wall-style filter used in OEM applications.
Passive regeneration helps to reduce engine wear by avoiding the “Washdown Effect” that occurs with most Active Systems, improving fuel economy, and reducing Oil Contamination, therefore reducing engine wear, and maintenance costs for the user.
To maintain the performance of the DPF, passive regeneration is used to oxidise the Particulate Matter within the filter. It’s a continuous process that allows the DPF to perform as intended without the need to raise the temperature by using an additional fuel source.
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Passive regeneration occurs, to some extent, in all DPF systems. We have systems available for the most common vehicle makes and models in Australia– so there’s no need for expensive OEM systems, or inferior, aftermarket active systems.
If you’re looking for a simple solution that is invisible to the operator, passive regeneration is a logical choice. There are no extra lights or controls to increase the operator’s workload. It’s a continuous process, allowing the DPF to perform as intended, and as a service-free system, operators don’t have to worry during the life of the machine.
Our Passive DPF delivers reliable operation over a wide variety of applications and duty cycles. Out in the field, on site, or for your personal vehicle. This means excellent fuel consumption, no disruption to the operator, no downtime and, therefore, increased productivity and reduced expenses for you.
A fully functioning Passive/Active style Euro5 system inclusive of DOC and DPF filter meets and exceeds Euro5. (Some of our clients prefer these when not tuning to be considered “legal”). This is supplied with a Certificate and Serial Number. This is a system that has an improvement in flow across the DPF Core of up to 22% over the OEM unit, with improved loading capacity, while also significantly reducing the C02 emissions, as well as Particulate Matter reduction by up to 99% given the correct application. Tuning is not required but recommended for optimum results.
A passive system reaches up to 90% PM reduction, requiring specific tuning for correct operation and emissions. This is a more cost-effective option and is more popular with vehicle owners who tune their vehicle and add performance upgrades, as ADR79/04 compliance in respect to invisible, gaseous emissions is often not met with modified turbochargers and tuning under the legislation. Despite this, a passive system allows for roadworthy and insurance aspects to remain covered, as there is no requirement for a specific style of system, or use a specific technology for exhaust after-treatments to be utilised. A passive style DPF system utilises a Euro5 DOC, and Particulate Matter reduction is up to 90%, which is equal to, (and in a vast majority of cases) exceeds that of the OEM unit which complies with the current ADR79/04 and Euro5 standards in the way of C02, and HC emissions (with correct tuning).
Our Hi-Flow unit works by utilising an Oxidizing process caused by a reaction from the NOx exhaust gases when it is mixed at the correct temperature with the coating inside the unit. This process occurs at around 300 degrees Celsius. This temperature is achieved at most cruise speeds and highway running, and of course under high-load, heavy operation and higher engine speeds, hence the term “Passive Regeneration DPF”, which can be combined with the Euro5 core for improved loading, and longer intervals between regerations. It is also a direct fitment, meaning that your OEM DPF remains undamaged, and is returned to every guest.
Other advantages of the system are;