Exhaust Particle Sensors for OBD and Onboard Emissions Monitoring

Discussion on progress made as a part of SwRI's Particle Sensor Performance & Durability (PSPD) consortium


Date Recorded: Wednesday, January 27, 2021
Hosts: Vinay Premnath 
Duration: 11:48


SwRI is pleased to present a webinar overview exhaust particle sensors.

California Air Resources Board has instituted requirements for on-board diagnostics (OBD) that make spark-plug sized particulate matter (PM) sensors critical components of vehicle exhaust aftertreatment systems. These sensors are typically used on diesel engine platforms to detect particle emissions failure downstream of diesel particulate filters (DPF) and potentially other engine sources equipped with filters to meet emissions regulations. While these sensors are currently utilized for OBD, there is interest globally to use such sensors for emission monitoring. Real-time sensor signal would be broadcast to the cloud, and this large database would assist regulators, climate and health researchers in assessing real world particle emissions. Prior to being widely adopted, in-depth knowledge of the performance and durability of such sensors is important. SwRI has been investigating particle sensors for many years now through SwRI's Particle Sensor & Durability (PSPD) consortium that is supported by the industry. This presentation provides an overview of the state-of-the-art in automotive exhaust aerosol sensing and outlines some steps required to develop a reliable sensing technology that can be used for emission monitoring. Some progress on the PSPD will also be discussed.

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