What does particulate matter sensor do?
What does particulate matter sensor do?
The Particulate Matter (PM) sensor is an exhaust sensor which measures cumulative particulate mass used for on-board diagnostics (OBD) and helps detect leakage in the diesel particulate filter (DPF). The integrated heater maximizes sensor regeneration across a wide range of operating conditions.
What is a DPF matter sensor?
A diesel particulate filter (DPF) differential pressure sensor measures exhaust backpressure and signals when the power-train control module (PCM) should begin a regeneration process to clear the filter of diesel particulate matter (DPM), or soot.
How do you monitor particulate matter?
The most common instruments for measuring particulate matter measure either its concentration or size distribution. The most accurate measurements are obtained from instruments that use a gravimetric (weighing) method. Air is drawn through a preweighed filter, and particles collect in the filter.
What is particulate matter in air?
PM stands for particulate matter (also called particle pollution): the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, soot, or smoke, are large or dark enough to be seen with the naked eye.
What does the particulate filter warning light mean?
When driving at high speeds, the temperature in the exhaust gets hot enough to burn the soot. This is called passive regeneration. If the vehicle doesn’t reach high speeds frequently, the engine can burn some extra fuel to raise the temperature at lower speeds and achieve the same result. This is called active regeneration.
Is it safe to drive with the diesel particulate filter light on?
Is it safe to drive with the diesel particulate filter light on? In order to combat exhaust emissions, modern diesel engines are fitted with a particulate filter in the exhaust. This filter is designed to catch any larger particles of soot that can come from the diesel exhaust.
What causes the engine management light to come on?
The latter is sometimes also illuminated if the car detects a fault with the differential pressure sensor, which determines how effectively the DPF is performing. In simple terms, this is a device that measures the ability of gas to pass along the exhaust, which includes passing through the diesel particulate filter.
How long does sps30 particulate matter sensor last?
The SPS30 particulate matter (PM) sensor enables accurate measurements from the device’s first operation and throughout its lifetime of more than eight years. Here you find the nearest distributor and/or representative in your area.
What happens if you ignore the diesel particulate filter warning light?
If you ignore the light, the soot will continue to build up until the computer turns on a “limp” mode to try and prevent any damage from occurring. This limp mode limits your top speed to reduce how much soot is getting sent through the filter.
Why does a diesel engine have a particulate filter?
In order to combat exhaust emissions, modern diesel engines are fitted with a particulate filter in the exhaust. This filter is designed to catch any larger particles of soot that can come from the diesel exhaust.
What happens if you put your particulate filter in limp mode?
If you wait too long in limp mode, the soot will build up too much and the forced regeneration will no longer be an option. Be sure to act quickly if your car ever goes into limp mode otherwise the filter will need to be replaced and that turns out to be quite a costly repair.
What to do if your particulate filter goes bad?
Take the car to a certified technician who can run a forced regeneration program to try and save the filter. If you wait too long in limp mode, the soot will build up too much and the forced regeneration will no longer be an option.
