Abstract
The GRPE Particulate Measurement Programme (PMP) is a collaborative programme operating under the auspices of the UNECE WP29/GRPE Group. Its focus is on the development of a new approach to the measurement of particles in vehicle exhaust emissions, which may be used to replace or to complement the existing regulated mass based system.
The aim of PMP is to recommend to the regulatory authorities a new particulate assessment and measurement system for application during type approval testing of light-duty vehicles and heavy-duty engines for particulate emissions. This recommended system would permit the development of new emission standards, which would, in turn, promote the adoption of new emission reduction technologies. In this context system comprises a description of the test procedures, sampling equipment and measurement instrumentation. The system will enable accurate and repeatable measurement of particles present in the exhaust stream and at stringency levels below those currently set down in legislation.
To assist in the setting of future limit values for light-duty vehicles and heavy-duty engines, the programme will provide data on the emissions of particles from engines employing a range of advanced technologies, and in particular from different diesel particle filters (DPF), measured using the new PMP recommended test system.
The programme is divided into three phases
- Phase I - development of candidate systems
- Phase II - testing programme and validation of systems
- Phase III - characterisation of advanced technology
The development of systems measuring particles emitted from the exhaust of vehicles or engines is carried out in national programmes testing candidate systems. The candidate test systems must be appropriate to measure particle emissions at levels significantly below those required by regulations for 2005. The target completion date is January 2003.