... 2011 diesel engines smoke detectors There have been a number of efforts to develop non-optical particulate matter (PM) sensors based on electrical methods of PM detection. These methods have in common the use of electrodes exposed to the exhaust gas, and they are said to respond...

...) is not currently available. Approaches that would require a sampling system or optical access to the exhaust have been considered to be unsuitable for vehicle applications ( 2 ). diesel smoke soot particulate emissions sensor diagnostics control diesel engines gas sensors smoke detectors...