DPF controls the solid fraction of diesel particulates effectively, but non-solid fractions of particulate matter emissions may have limited effectiveness.
How diesel particulate filters work? Watch the video to learn more
Contents
5 Symptoms of a Blocked DPF Filter
- Illuminated DPF warning light
- Limp mode and loss of power
- Regeneration keeps failing
- The smell of the diesel
- Auto stop-start is not working
- Releasing an excessive amount of smoke from the exhaust pipe
- Increase of engine oil level
- High level of fuel consumption
What Is DPF Regeneration?
A diesel particulate filter must be cleaned regularly to continue trapping more particulates. This process is called DPF regeneration. The combustion process creates soot, so it should be burnt off to prevent the blocking of the filter. For burning the particles of soot, a very high temperature is needed. Active Regeneration and Passive Regeneration are two ways that can be achieved.
Passive Regeneration
While diesel vehicle owners drive for a long time at high speeds and sufficient load, automatic regeneration happens. In this process, the exhaust temperature is high enough to have no problem in regenerating diesel particulate filters automatically. Driving at 113 kph or above can heat the exhaust to burn off particles that the DPF has absorbed.
Active Regeneration
The illuminated warning light on the dashboard may alert the driver that DPF is blocked and regeneration is needed. Since many diesel engines’ owners don’t drive long distances regularly and at high speed, they had to devise a different way and clear the diesel particulate filters of soot manually.
DEF and DPF
Diesel engine fluid (DEF) is similar to the diesel particulate filter (DPF) that removes soot from the diesel engine and stores it in the exhaust system, and it will clear out excess soot.
Although the DEF can decrease fuel efficiency and performance, it can also cause problems with the system freezing up. Diesel exhaust fluid, usually known as AdBlue, is mainly made of water, so in a colder climate, you run the risk of having the fluid freeze.
Why Azure?
Diesel exhaust fluid has a central role in diesel engines and is related to engine fuel consumption. Failure to replenish DEF tanks can result in the immobilization of the machine. Ten years of supplying and processing high-quality DEF fluid have turned Azure Chemical into one of the best wholesalers and manufacturers in Southern California.
The main goal of Azure chemical is to help diesel vehicle owners meet the NOx reduction and let them be ready to promote a green planet.
Conclusion
Diesel particulate filters or DPF trap and store exhaust soot to reduce emissions from diesel engines. They should be periodically burned off to regenerate the filter. The excess soot deposited in the filter is burned off during the regeneration process to avoid harmful emissions from diesel vehicles when accelerating. Diesel particulate filters absorb particulate matter to meet the EPA emission standards.
Sources
Universal technical institute, (September 27, 2019), Everything You Need to Know About Diesel Particulate Filters, Universal technical institute.
https://www.uti.edu/blog/diesel/diesel-particulate-filters
Sinspeed, (2022), a leading automotive parts remanufacturer, Sinspeed.
https://www.sinspeed.co.uk/blog/dpf-cleaning-service/
Auto Butler, (July 13, 2015), What is DPF Regeneration? Auto Butler
https://www.autobutler.co.uk/wiki/dfp-regeneration