Calibration and instrumentation gases for portable emission monitoring system (PEMS) in the automotive industry

Roberto Parola, Linde (DE)

The introduction of the on-road testing and in-service monitoring requirements represents a further challenge for both the on-road and off-road automotive industry sectors. The purpose of these changes is to create a linkage between testing under real conditions and testing carried out in the laboratory, which is no longer sufficiently representative of the wide range of real driving on the roads and working conditions on the field. The implementation of Euro 6c from September 2017 will introduce the Real Driving Emission (RDE) testing for light duty vehicles – for heavy duty vehicles a similar requirement is already in force since 2014 and changes are expected soon – and the new Non-Road Mobile Machinery (NRMM) regulation will introduce an in-service monitoring system for off-road vehicles (e.g. agriculture and mining machinery, construction equipment). To comply with both these new requirements the use of Portable Emission Monitoring Systems (PEMS) becomes essential for example for OEMs, engine manufacturers, testing houses and engineering service providers, posing some challenges in setting up the relevant testing program. PEMS technology can monitor carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides (NOx) and particulate matters. Due to the great attention the emissions from vehicles gained in the recent years, primarily driven by the NOx issue of the diesel engines, also other geographies like the USA and China have been introducing live PEMS tests. This paper focuses on the gases that need to be used with PEMS. In particular calibration and instrumentation gases which will be required in the industry will be discussed drawing on Linde’s experience of working with industries who are preparing for these new environmental regulatory requirements.


Pen Profile

Roberto Parola holds a Master of Science degree in engineering from the Politecnico di Milano, Italy. He has spent more than 15 years in the safety, health & environmental protection area, both in Europe and Asia. In 2007 he joined the Linde Gas headquarter in Munich, being globally responsible for product stewardship and product legislation. In 2015 he moved to a global product management position for specialty gases and equipment focusing on environmental related topics. In this role he is involved in ambient air quality regulations and emissions regulations for vehicles (on-road and off-road, e.g. Euro 6 and Non-Road Mobile Machinery Stage V), ships (Marpol) and industrial plants (Industrial Emission Directive and Medium Combustion Plant Directive).

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