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 2019
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7 Jan 2019 Japan concern regarding the proposed new real-world braking test cycle PMP-49-03
8 Jan 2019 PMP informal group status report to GRPE PMP-49-02
9 Jan 2019 Agenda for the 49th PMP informal group session PMP-49-01/Rev.1
4 Apr 2019 Draft report of the 49th PMP informal group session PMP-49-04
4 Apr 2019 Draft agenda for the 50th PMP informal group session PMP-50-01
15 Apr 2019 Sensitivity and Reproducibility of Brake Wear Particle Emission Measurements using JARI System PMP-50-10
15 Apr 2019 Down to 10: Sub-23 nm particle measurement methodology PMP-50-21
15 Apr 2019 PEMs4Nano: Horiba Findings Sub-23-Additional Information in comparison to PEMs4Nano PMP-50-19
15 Apr 2019 PEMS4Nano: Project overview and preliminary results PMP-50-18
15 Apr 2019 Down to 10: Measuring automotive exhaust particles down to 10 nanometres PMP-50-17
15 Apr 2019 Sub 20 nm generation of soot particles using the VSP-G1 nanoparticle generator PMP-50-16
15 Apr 2019 EC/OC of CAST generated soot PMP-50-15
15 Apr 2019 SUREAL-23 Understanding, measuring and regulation Sub-23 nm particle emissions PMP-50-14
15 Apr 2019 10 nm APC: Calibration requirements & challenges PMP-50-13
15 Apr 2019 Brake emissions: High-fidelity modelling and characterization of dynamometer enclosure interactions using a DOE approach for measurement PMP-50-11
15 Apr 2019 Brake-wear PM Research for California Emission Inventory PMP-50-12
15 Apr 2019 Preliminary Results for Brake Wear Particle Emission PN and PM Concentration and Size Distribution Measurements PMP-50-08
15 Apr 2019 Brake Wear PN Results: Novel WLTP Cycle PMP-50-09
15 Apr 2019 Brake Dust PM Results measured on a Dyno running the Novel Test Cycle PMP-50-07
15 Apr 2019 Brake particle measurement results: Novel WLTP Cycle PMP-50-06
15 Apr 2019 Exploratory Brake Emissions Benchmarking: A Design of Experiments PMP-50-05
15 Apr 2019 Measuring brake wear PM and PN emissions with the WLTP in-use driving data PMP-50-04
15 Apr 2019 PMP Task Force 1 statistics and findings PMP-50-03
15 Apr 2019 PMP Task Force 1 activities update PMP-50-02
15 Apr 2019 Traceable Particle Number Calibrations: An AIP approach PMP-50-20
17 Apr 2019 kf influence on CPC calibration and counting efficiency PMP-50-22
2 May 2019 PMP: Towards a stable mass and number generator of Ag fractal soot-like particles for repeatable calibration PMP-50-23
2 May 2019 PMP: Concept for an automotive 10nm calibration standard PMP-50-24
18 Oct 2019 Meeting notes from the 50th PMP informal group session PMP-50-25
29 Oct 2019 Draft agenda for the 51st PMP informal group session
29 Oct 2019 WLTP Cycle for brake dust emissions with various particle measurement techniques PMP-51-08
30 Oct 2019 PN and PM measurements for brake wear particle emission PMP-51-09
30 Oct 2019 Experimental validation of PMP cooling air adjustment using CARB+1 vehicles PMP-51-03
30 Oct 2019 PMP: Concern about Problem of CPC/Reference Repeatability PMP-51-10
30 Oct 2019 Short test cycle for brake wear particle emission measurements PMP-51-04
30 Oct 2019 Brake particles: Challenges in the Development of a Commonly Accepted Method for Measuring Brake Dust PMP-51-07
30 Oct 2019 Brake particle emissions: Cooling air flow rate adjustment-Introduction to the proposed method (Part 1) PMP-51-02
30 Oct 2019 Brake Particle Emissions Task Force update PMP-51-01
30 Oct 2019 Brake wear particle emissions of a passenger car measured on a chassis dynamometer PMP-51-05
30 Oct 2019 Challenges in brake-wear PM/PN measurements over the WLTP test cycle PMP-51-06
5 Nov 2019 Questions concerning Practical Problems with the Introducing of sub 23 regulations PMP-51-23
5 Nov 2019 Horizon 2020: DownToTen-Measuring automotive exhaust particles down to 10 nanometres PMP-51-22
5 Nov 2019 51st (October 2019) PMP informal group session summary PMP-51-21
5 Nov 2019 ISO 17025 Compliant Calibration of Particle Sizers, CPCs, Automotive and Aircraft Solid Particle Number Systems PMP-51-20
5 Nov 2019 First results testing the VSP-G1 nanoparticle generator as a particle source for emission testing and calibration PMP-51-19
5 Nov 2019 Catalytic Stripper Emery Oil Removal Efficiency PMP-51-18
5 Nov 2019 10 nm CPC calibration with CAST PMP-51-17
5 Nov 2019 SUREAL-23: Understanding, Measuring and Regulating Sub-23 nm Particle Emissions from Direct Injection Engines Including Real Driving Conditions PMP-51-16
5 Nov 2019 PEMs4Nano: Measuring Engine Emissions Below 23nm PMP-51-15
5 Nov 2019 Traceable Particle Number Calibrations: An AIP Approach PMP-51-14
5 Nov 2019 Tailpipe sampling: Heavy-duty update PMP-51-13
5 Nov 2019 System calibration for exhaust PN counters PMP-51-12
5 Nov 2019 Soot-like particles in PMP-system calibration PMP-51-11