Particle Measurement Programme (PMP)
Reports to GRPE

The Particle Measurement Programme informal group was established to develop a more sensitive particle measurement system than the long-standing particulate matter mass measurement system. This phase concluded with the adoption into UN Regulations 83 (light duty emissions) and 49 (heavy duty emissions) of the particle number (PN) counting method, together with enhancements to the particulate mass (PM) measurement procedure. Initially the PN protocol was applied for diesel engines/vehicles only in R83.06 and [R49.0x] and subsequently has been extended to cover to spark ignition direct injection engined vehicles R83.06 (draft).

The European Union (EU) has requested further investigation of particle number emissions from spark ignition engines relating to particle size (reduction of the d50 cut off specification) and to emissions under rich operation conditions. Further activities to adapt the procedures/measurement equipment and establish appropriate limit values may be necessary based on the results of these investigations.

The PMP group expects to complete its current mission by June 2016. However, the group’s mandate could be extended in order to transpose the developed procedures into emissions-related global technical regulations, including the upcoming GTR on light vehicle emissions (WLTP).

Moreover, concerns over additional sources of particulates, such as tire and brake wear, have been raised and may require measurement procedures as well. The PMP group is developing GTR provisions for brake wear. Foundational documents can be found here.

Meetings Documents Regulations Sub-groups
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Documents 2018
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9 Jan 2018 PMP informal group progress report for GRPE January 2018 session PMP-46-02
9 Jan 2018 PMP-46 remote participation information
10 Jan 2018 Agenda for the 46th PMP informal group session PMP-46-01
30 Apr 2018 PMP: Inter-laboratory correlation exercise with Condensation Particle Counters (CPC) PMP-47-03
9 May 2018 Agenda for the 47th PMP informal group session PMP-47-01
9 May 2018 Non-exhaust emissions: TRON project for innovative technologies PMP-47-04
9 May 2018 PMP 47th session: Global access numbers
15 May 2018 PMP: PN Counting from Raw Exhaust via Fixed Dilution and round robin project PMP-47-07
15 May 2018 NEPE: JRC-VTI tyre particle emissions study PMP-47-06
15 May 2018 Minutes of the 46th PMP informal group session PMP-46-03
16 May 2018 Brake Particle Emissions: Report of the PMP Task Force 2 on Brake Dust Sampling and Measurement PMP-47-05/Rev.1
16 May 2018 PMP: Relationship Among Various Particle Characterization Metrics Using GDI Engine Based Light-Duty Vehicles PMP-47-08
16 May 2018 Exhaust Emissions: Light Duty-PMP-2017/2018 Sub23nm Round Robin PMP-47-09
16 May 2018 Periodical Technical Inspection based on Particle Number (PN) for NRMM PMP-47-10
16 May 2018 SUREAL-23: Sub-23 Nm Particle Emissions from DIrect Injection Engines, Including Real Driving Conditions PMP-47-11
16 May 2018 Exhaust Emissions: Light Duty-PMP-2017/2018 Sub23nm Round Robin PMP-47-13
17 May 2018 Minutes of the 45th PMP informal group session PMP-45-19/Rev.1
17 May 2018 PEMs4Nano: Measurement integration into system development PMP-47-14
17 May 2018 Particle emissions from different types of brake pads – PM results PMP-47-16
17 May 2018 PMP: CPC calibrations- Effect of k-factor and calibration material on 23 nm efficiency specifications PMP-47-15
17 May 2018 SAE Brake Materials Environmental Task Force PMP-47-17
23 May 2018 PMP: Horizon 2020 "Down to 10" project summary PMP-47-18
31 May 2018 NEPE: Comparison of the run-in and emission behavior of different disc concepts PMP-47-20/Rev.1
31 May 2018 Brake Particle Emissions Measurements – Influence of Inlet air flow and sampling flow PMP-47-21
31 May 2018 Preliminary investigations of morphology and composition of brake wear particles PMP-47-22
31 May 2018 Brake Emissions: Development of a new Real World Braking Cycle PMP-47-12/Rev.1
31 May 2018 Brake particle emissions: Estimated impact of future technologies PMP-47-19
9 Jul 2018 NEPE: Estimation of transport efficiency for brake emissions testing PMP-47-02
30 Oct 2018 PMP: Sub-23nm roadmap proposal PMP-48-02
7 Nov 2018 PEMs4Nano – Horizon 2020 project overview and preliminary results PMP-48-08
7 Nov 2018 Tyre and Road Wear Particles: The tyre industry perspective PMP-48-13
7 Nov 2018 Influence of regenerative braking on the emission behavior of friction brakes PMP-48-12
7 Nov 2018 Measuring automotive exhaust particles down to 10 nanometres – DownToTen status report PMP-48-10
7 Nov 2018 Brake particle emissions task force 1 status report PMP-48-11
7 Nov 2018 SUREAL-23: Understanding, measuring and regulating sub-23 Nm particle emissions from direct injection engines including real driving conditions PMP-48-09
7 Nov 2018 CPC Calibration: Key Findings-Calibration Aerosol and Laboratory Setup PMP-48-07
7 Nov 2018 Thermal regimes during proving ground measurements using WLTP-Brake cycle PMP-48-04
7 Nov 2018 Development of Tire Dust Emission Measurement for Passenger Vehicle PMP-48-05
7 Nov 2018 Notes from the 47th PMP informal group session PMP-47-23
7 Nov 2018 Agenda for the 48th PMP informal group session PMP-48-01/Rev.1
8 Nov 2018 First insights on brake wear PN over the novel cycle PMP-48-06/Rev.1
8 Nov 2018 Recent Activity for Brake Wear Particle Emission Measurement using JARI System PMP-48-03/Rev.1
8 Nov 2018 Particle number measurements: Correcting for losses at 10 nm or smaller PMP-48-14
9 Nov 2018 Non-exhaust emissions: UK Department for Transport perspective PMP-48-15
9 Nov 2018 Light Duty-PMP-2017/2018 Sub 23 nm Round Robin PMP-48-16
9 Nov 2018 PMP: Short literature review about effects of gasoline characteristics on solid PN-Emissions, GDI PMP-48-17
9 Nov 2018 PMP: PN Counting from Raw Exhaust via Fixed Dilution and PMP Round Robin Project PMP-48-18
9 Nov 2018 NEPE: ITT Friction Materials presentation (title slide only) PMP-48-19