How does a Diesel Particulate Filter (DPF) work?
DPFs are the most effective at reducing emissions, but are also the most sensitive. These have a yearly maintenance cycle, and the filter periodically needs to be cleaned out due to accumulation of particulates. The filter is typically placed inline of the diesel exhaust flow to collect particulates. These systems are on average heavier and larger than your standard muffler, thus some modifications may need to be made for proper installation. The exhaust gas must be high enough to regenerate the filter however. This can be done by either an active control system or a passive control system. Some examples of this for school buses include longer bus routes and wrapping the exhaust pipe in insulated material to retain as much heat as possible.
Related Questions
- If a diesel particulate filter (DPF) is ARB verified for an engine family, how can I be sure it will work for a given model of engine and a trucks driving cycle?
- What is the difference between a diesel oxidation converter (DOC) and a diesel particulate filter (DPF)?
- What is a Diesel Particulate filter (DPF)?
