On-road particle number measurements using a portable emission measurement system (PEMS)

2016 ◽  
Vol 124 ◽  
pp. 37-45 ◽  
Author(s):  
Jens Gallus ◽  
Ulf Kirchner ◽  
Rainer Vogt ◽  
Christoph Börensen ◽  
Thorsten Benter

2015 ◽  
Vol 8 (1) ◽  
pp. 43-55 ◽  
Author(s):  
I. Ježek ◽  
L. Drinovec ◽  
L. Ferrero ◽  
M. Carriero ◽  
G. Močnik

Abstract. We have used two methods for measuring emission factors (EFs) in real driving conditions on five cars in a controlled environment: the stationary method, where the investigated vehicle drives by the stationary measurement platform and the composition of the plume is measured, and the chasing method, where a mobile measurement platform drives behind the investigated vehicle. We measured EFs of black carbon and particle number concentration. The stationary method was tested for repeatability at different speeds and on a slope. The chasing method was tested on a test track and compared to the portable emission measurement system. We further developed the data processing algorithm for both methods, trying to improve consistency, determine the plume duration, limit the background influence and facilitate automatic processing of measurements. The comparison of emission factors determined by the two methods showed good agreement. EFs of a single car measured with either method have a specific distribution with a characteristic value and a long tail of super emissions. Measuring EFs at different speeds or slopes did not significantly influence the EFs of different cars; hence, we propose a new description of vehicle emissions that is not related to kinematic or engine parameters, and we rather describe the vehicle EF with a characteristic value and a super emission tail.



2014 ◽  
Vol 2014.24 (0) ◽  
pp. 83-86
Author(s):  
Kazushi AKISHIMA ◽  
Kai MIYAMURA ◽  
Kotaro TANAKA ◽  
Kenichi TONOKURA ◽  
Mitsuru KONNO


Author(s):  
Jerzy Merkisz ◽  
Agnieszka Merkisz-Guranowska ◽  
Jacek Pielecha ◽  
Pawel Fuc ◽  
Marianna Jacyna


2012 ◽  
Vol 437 ◽  
pp. 255-261 ◽  
Author(s):  
Mingliang Fu ◽  
Yunshan Ge ◽  
Jianwei Tan ◽  
Tao Zeng ◽  
Bin Liang




2005 ◽  
Author(s):  
Mark A. Dearth ◽  
James W. Butler ◽  
Alex Colvin ◽  
Christine Gierczak ◽  
Steve Kaberline ◽  
...  




2009 ◽  
Vol 43 (18) ◽  
pp. 2877-2883 ◽  
Author(s):  
K.C. Johnson ◽  
T.D. Durbin ◽  
D.R. Cocker ◽  
W.J. Miller ◽  
D.K. Bishnu ◽  
...  


2014 ◽  
Vol 694 ◽  
pp. 13-18 ◽  
Author(s):  
Qian Yu ◽  
Tie Zhu Li ◽  
Yan Ming Ren ◽  
Na Zhu ◽  
Fang Qian

The purpose of this paper is to analyze the influence of passenger load on diesel bus emissions based on the real-world on-road emission data collected by the Portable Emission Measurement System (PEMS). It is also analyzed whether passenger load affect the accuracy of emission models based on VSP. The results indicate that the influence of passenger load on emission rates of CO2, CO, NOX and HC is various with different speed and acceleration ranges. As for the distance-based emission factors of CO2, CO, NOX and HC, per-passenger emission factors decrease with the rise of passenger load. In addition, it is found that the influence of passenger load can be omitted properly in the emission models of low and middle speed bins. But that can lead to an error reaching up to 49% if the influence of passenger load is neglected in the models of high speed bins.



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