On-Road Measurement of Particle Emission in the Exhaust Plume of a Diesel Passenger Car
- 15 August 2003
- journal article
- research article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 37 (18), 4070-4076
- https://doi.org/10.1021/es0300315
Abstract
Particle size distributions were measured under real world dilution conditions in the exhaust plume of a diesel passenger car closely followed by a mobile laboratory on a high speed test track. Under carefully controlled conditions the exhaust plume was continuously sampled and analyzed inside the mobile laboratory. Exhaust particle size distribution data were recorded together with exhaust gas concentrations, i.e., CO, CO2, and NOx, and compared to data obtained from the same vehicle tested on a chassis dynamometer. Good agreement was found for the soot mode particles which occurred at a geometric mean diameter of approximately 50 nm and a total particle emission rate of 1014 particles km-1. Using 350 ppm high sulfur fuel and the standard oxidation catalyst a bimodal size distribution with a nucleation mode at 10 nm was observed at car velocities of 100 km h-1 and 120 km h-1, respectively. Nucleation mode particles were only present if high sulfur fuel was used with the oxidation catalyst installed. This is in agreement with prior work that these particles are of semivolatile nature and originate from the nucleation of sulfates formed inside the catalyst. Temporal effects of the occurrence of nucleation mode particles during steady-state cruising and the dynamical behavior during acceleration and deceleration were investigated.Keywords
This publication has 8 references indexed in Scilit:
- Identification of diesel exhaust particles at an Autobahn, urban and rural location using single-particle mass spectrometryJournal of Aerosol Science, 2003
- Urban and rural aerosol characterization of summer smog events during the PIPAPO field campaign in Milan, ItalyJournal of Geophysical Research: Solid Earth, 2002
- VOLATILITY OF AEROSOL PARTICLES MEASURED NEXT TO A HIGHWAYJournal of Aerosol Science, 2001
- Chemical Analysis of Diesel Engine Nanoparticles Using a Nano-DMA/Thermal Desorption Particle Beam Mass SpectrometerEnvironmental Science & Technology, 2001
- Examination of the Size-Resolved and Transient Nature of Motor Vehicle Particle EmissionsEnvironmental Science & Technology, 1999
- Ambient particles and health: lines that divide.Journal of the Air & Waste Management Association, 1997
- Acute Respiratory Effects of Particulate Air PollutionAnnual Review of Public Health, 1994
- Characterization of California aerosols—I. Size distributions of freeway aerosolAtmospheric Environment (1967), 1975