3 Proven Strategies for Optimal Aftertreatment System Performance

Is your dashboard's DPF lamp lighting up more often than usual? This may indicate that your truck’s aftertreatment system is clogged and not running properly. 

Not only is this a major inconvenience, but it can also result in hefty fines. The Environmental Protection Agency (EPA) can hit violators with civil penalties up to a staggering $45,268 per vehicle! On top of the financial burden, a failing aftertreatment system can lead to decreased performance and increased fuel costs. 

The good news is that there are steps you can take to ensure your aftertreatment system operates optimally, keeping your fleet compliant, efficient, and saving you money. In this article, Fleet DR Truck and Trailer Emergency Repair will explore three proven strategies for optimal diesel aftertreatment maintenance.

The Crucial Role of Aftertreatment Systems

Modern diesel engines are equipped with aftertreatment systems to reduce harmful pollutants released into the environment. These systems play a vital role in keeping our air clean and our fleets compliant with ever-stricter emissions regulations. There are two primary components in a diesel aftertreatment system, though it is composed of several different components that all work in tandem to reduce emissions:

The Diesel Particulate Filter (DPF) traps soot and other particulate matter from the engine exhaust, preventing them from entering the atmosphere. A clogged DPF can lead to reduced engine power and increased fuel consumption.

On the other hand, the Diesel Exhaust Fluid (DEF) Injector releases DEF, a non-toxic solution sprayed into the exhaust stream before the DPF. This chemical reaction helps burn off the trapped soot particles in the DPF during a process called regeneration. A malfunctioning DEF injector can hinder regeneration and cause the DPF to become clogged.

Beyond DPF Maintenance: A Holistic Approach

Diesel aftertreatment maintenance goes beyond just the DPF. While DPF cleaning is a crucial aspect, a well-maintained system requires a holistic approach that considers all components. Here are some additional factors to keep in mind:

EGR Valve Maintenance

The Exhaust Gas Recirculation (EGR) valve plays a role in reducing nitrogen oxide (NOx) emissions. A malfunctioning EGR valve can lead to increased NOx emissions and contribute to aftertreatment system problems. Regular inspections and cleaning of the EGR valve are essential for optimal performance.

Sensor Care

Various sensors monitor different aspects of the aftertreatment system, such as exhaust temperature and DEF fluid level. Faulty sensors can provide inaccurate data to the engine computer, leading to improper regeneration cycles and potential damage to other components. Routine checks and replacements of faulty sensors are important for maintaining system efficiency.

3 Proven Strategies for Peak Performance

By following these three key strategies, you can ensure your entire diesel aftertreatment system functions optimally:

No. 1: Prioritize Preventative Maintenance

As with any complex system, preventative maintenance is crucial for optimal performance and longevity. Here are some important practices to follow:

• Adhere to OEM Service Intervals: Every manufacturer has recommended service intervals for aftertreatment system components like the DPF, DEF injector, and EGR valve. These intervals are based on factors like engine type, duty cycle, and fuel quality. Neglecting these recommendations can lead to premature failure and costly repairs.
• Use Genuine Parts: When replacing aftertreatment system components, always use genuine OEM parts or parts approved by the manufacturer. Non-genuine parts may not function properly and could damage the entire system. Fleet DR Truck and Trailer Emergency Repair uses only the highest quality parts to ensure reliable performance.
• Regular DPF Cleaning: DPFs don't last forever. Over time, the filter becomes clogged with trapped soot. Depending on your vehicle's duty cycle and application, the DPF may require cleaning every 50,000 to 200,000 miles. Fleet DR Truck and Trailer Emergency Repair offers professional DPF cleaning services to restore proper function and extend the life of your filter.

No. 2: Monitor Regeneration Cycles

DPFs regenerate periodically to burn off accumulated soot. There are three main types of regeneration cycles:

• Passive Regeneration: This occurs automatically during normal highway driving at sustained speeds and high exhaust temperatures.
• Active Regeneration: If passive regeneration fails to eliminate enough soot, the engine computer initiates an active regeneration cycle. This may involve increased engine RPM or fuel injection to raise exhaust temperatures and promote burning off the soot. Active regeneration cycles can be noticeable as reduced fuel economy or a slight burning odor.
• Forced Regeneration: In some cases, a forced regeneration may be necessary using a diagnostic tool to manually initiate the process. This is typically only needed if the DPF becomes excessively clogged.

By monitoring the frequency and duration of regeneration cycles, you can identify potential problems early on. An increase in the frequency of active regenerations or the need for frequent forced regenerations could indicate a clogged DPF or a malfunctioning DEF injector.

If you notice any abnormalities in the regeneration cycles, don't hesitate to contact Fleet DR Truck and Trailer Emergency Repair for a thorough inspection. Our experienced technicians can diagnose the problem and recommend the proper course of action, whether it's a simple cleaning or a more complex repair.

No. 3: Fuel Quality Matters

The quality of fuel your vehicles use can significantly impact aftertreatment system performance. Contaminated fuel or low-quality DEF can damage components and hinder regeneration. Here's how to ensure proper fuel quality:

• Partner with a Reputable Fuel Supplier: Choose a fuel supplier that provides high-quality diesel fuel that meets all necessary standards. This will help prevent contamination and ensure your engine and aftertreatment system function properly.
• Invest in DEF Storage Solutions: Contaminated DEF can render the entire system inoperable. Store DEF in appropriate containers that are labeled and kept out of direct sunlight. Avoid exposure to extreme temperatures, as freezing or excessive heat can degrade the DEF solution. Fleet DR Truck and Trailer Emergency Repair offers advice on proper DEF storage and handling practices to help you maintain optimal DEF quality.

Final Words

By prioritizing preventative maintenance, monitoring regeneration cycles, and using high-quality fuel, you can ensure your diesel aftertreatment system operates optimally. This not only keeps your fleet compliant with environmental regulations and avoids costly fines, but it also helps to maximize fuel efficiency, reduce maintenance costs, and extend engine life.

For all your diesel aftertreatment maintenance needs, Fleet DR Truck and Trailer Emergency Repair is your one-stop shop. We understand the importance of keeping your fleet compliant and on the road, so we offer flexible scheduling options and fast turnaround times. Contact Fleet DR Truck and Trailer Emergency Repair today to schedule an appointment and keep your aftertreatment system functioning optimally!