Both DPF and DOC are designed to remove particulate matter from diesel engine exhausts. They are essential to complying with increasingly stricter emission standards. DOCs remove carbon monoxide, unburned fuel oil, and hydrocarbons through the process of oxidation. DPFs are designed to remove particulate matter in diesel engine exhausts by trapping it on the filter wall.
But when was the last time you had your DPF and DOC filters cleaned?
It is important to properly clean DPFs and DOCs in order to maintain optimal performance. Over time, particulate matter can build up on the filter wall and reduce the filter’s ability to trap new particulate matter. This can lead to an increase in emissions and a decrease in fuel efficiency.
The article below provides an overview of the DPF and DOC maintenance, from the frequency of cleaning to the methods used to clean them.
How Often Should DPF and DOC Be Cleaned?
The frequency of DPF and DOC cleaning depends on a number of factors, including engine type, duty cycle, and fuel quality. DPFs and DOCs should be inspected regularly and cleaned as needed to maintain optimal performance.
As a rule of thumb, DPFs should be cleaned after the first 150,000 to 200,000 miles and then every 100,000 miles after that. The DOCs should be cleaned every 50,000 miles. However, these intervals may vary depending on the factors mentioned above.
Why Is It Vital to Clean DPF and DOC Regularly?
Cleaning DPF and DOC regularly is important because it helps to maintain optimal performance and prevent emissions from exceeding regulatory limits. Over time, particulate matter can build up on the filter wall and reduce the filter’s ability to trap new particulate matter. This can lead to an increase in emissions and a decrease in fuel efficiency.
Cleaning DPF and DOC also helps to extend their service life. Regular cleaning can remove built-up deposits that can cause the filter to clog and fail prematurely.
How to Clean DPF and DOC?
DPF and DOC can be cleaned using a number of methods, including pulse cleaning, liquid cleaning, ultrasonic cleaning, and thermal cleaning.
Chemical cleaning is a popular method of cleaning DPF and DOC. This method uses chemicals to break down deposits on the filter wall.
Pulse cleaning is a type of mechanical cleaning that uses high-pressure pulses of air to remove deposits from the filter wall, ultrasonic cleaning uses sound waves to create cavitation bubbles that break down deposits on the filter wall, while thermal cleaning uses high temperatures to do the same.
Liquid cleaning, on the other hand, uses a liquid solvent to break down deposits on the filter wall.
Of course, the surefire way to clean your DPF and DOC is to bring them to your nearest diesel repair shop or any other professional.
Which Method Is Best?
There is no one-size-fits-all answer to this question. The best method depends on the severity of the build-up and the type of filter. Some filters are more delicate than others and require special care when cleaning.
If you are unsure which method is best for your filter, consult your owner’s manual or a qualified service technician.
The Bottom Line
Cleaning your DPF and DOC is vital to maintaining optimal performance and preventing emissions from exceeding regulatory limits. It can also help to extend their service life significantly.
There are a number of methods that can be used to clean DPF and DOC, but if you’re not sure which one is best for your needs, it’s always best to consult with a professional or hire someone to do it for you.