New Particulate Sensors Clean Diesel Fuel Exhaust
Providing an economical method for cleaning up emissions from diesel powered engines efficiently and cheaply is the goal of the Pegasor, a new product being introduced by a Finnish company called Pegasor Ltd. This compact particulate matter (PM) sensor can be installed into a diesel engine's exhaust system and will electrostatically charge the particles in the exhaust and measure the total amount of current which is caused as the electrified particles leave the sensors. This technology will not require complex sampling or implementation of dilution systems that have been necessary in existing PM systems.
Since the Pegasor particulate matter sensor (PPS-M) does not have to trap the particulates flowing through the exhaust, it requires less maintenance and has a longer life cycle than previous PM designs. It can by used on all diesel engine applications and can even be used by automakers to do engine bench test monitoring and on-board diagnostics.
PPS-M technology can be installed in both upstream and downstream particulate filters to help diesel engine manufacturers meet the minimum U.S. Tier 2 Bin 5 emission standards which requires the addition of an exhaust after-treatment.