The PM sensor operates through the following method: A laser diode shines a light beam through a cavity. A fan draws air into the cavity with fine dust particles suspended in the air. As the laser beam shines through the air, the dust particles deflect or scatter some of the laser light.May 6, 2019
What is a particulate sensor?
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).
Where is the particulate matter sensor located?
PM sensor in mostly of motor vehicles and cars are fitted at upstream of the exhaust system before catalytic converters and DPF filter to get readings of soot coming out of combustion engine.
Is a particulate matter sensor a NOX sensor?
The NOX sensor supports control of the required urea dosing in SCR systems for NOX reduction and monitor- ing (OBD) of the SCR components. The sensor is available for passenger car and commercial vehicle applications. Particulate matter sensor. The particulate matter sensor enables diagnosis of the particulate filter.
How do you change a particulate matter sensor?
https://www.youtube.com/watch?v=bnnGXBADQoM
Where is the diesel particulate sensor located?
The DPF differential pressure sensor is usually mounted in the engine compartment to protect it from heat. The sensor is connected to the engine control unit (ECU) by an electrical connector and connected to the DPF via two silicon hoses.
What is a particulate matter sensor?
Various types of soot sensors, also known as particulate matter or PM sensors, are used for the control and diagnostics of emission systems utilizing diesel particulate filters (DPF). DPF failure detection which may result in excess PM emissions, to trigger an OBD fault signal.
How does DPF sensor work?
How does a DPF differential pressure sensor work? By measuring and comparing the difference in pressure of the exhaust gas before and after the filter, the sensor can estimate the amount of DPM that is trapped in the filter and signal the PCM to start the DPF regeneration process.
How do you reset a DPF pressure sensor?
https://www.youtube.com/watch?v=zShMC7jLKgE
How do PM sensors work?
The PM sensor uses a laser scattering principle, which works by using a laser to radiate suspending particles in the air. Air passes through the laser where the light reflected off the particles is captured by the photodiode. The photodiode passes information to the photoelectric converter.
How does PM2 5 sensor work?
PM2. 5 refers to particles that are 2.5 microns or smaller in diameter. The high quality Honeywell HPM Series Particle Sensor uses laser scattering to radiate suspending particles in the air, then collects scattering light to obtain the curve of scattering light change with time.