Center for Environmental Research and Technology

Publications

On-road gaseous and particulate emissions from GDI vehicles with and without gasoline particulate filters (GPFs) using portable emissions measurement systems (PEMS)

Cavan McCaffery, Hanwei Zhu, Chengguo Li, Thomas Durbin, Kent Johnson, Heejung Jung, Rasto Brezny, Michael Geller, Georgios Karavalakis

Science of The Total Environment | Spring 2020

On-Board Sensor-Based NO _x Emissions from Heavy-Duty Diesel Vehicles

Yi Tan, Paul Henderick, Seungju Yoon, Jorn Herner, Thomas Montes, Kanok Boriboonsomsin, Kent Johnson, George Scora, Daniel Sandez, Thomas D. Durbin

Environmental Science & Technology | April 2019

A comparison of a mini-PEMS and a 1065 compliant PEMS for on-road gaseous and particulate emissions from a light duty diesel truck

Jiacheng Yang, ThomasD. Durbin, Yu Jiang, Takeshi Tange, Georgios Karavalakis,David R. Cocker III,Kent C.Johnson

Science of the Total Environment | November 2018

Real-world exhaust temperature profiles of on-road heavy-duty diesel vehicles equipped with selective catalytic reduction

Kanok Boriboonsomsin, Thomas Durbin, George Scora, Kent Johnson, Daniel Sandez, Alexander Vu, Yu Jiang, Andrew Burnette, Seungju Yoon, John Collins, Zhen Dai, Carl Fulper, Sandeep Kishan, Michael Sabisch, Doug Jackson

Science of Total Environment | September 2018

A Comprehensive Evaluation of a Gaseous Portable Emissions Measurement System with a Mobile Reference Laboratory

Tangeng Cao, Thomas Durbin, David Cocker, Roland Wanker 

Emission Control Science and Technology | May 2016

Characterization of PM-PEMS for in-use measurements conducted during validation testing for the PM-PEMS measurement allowance program

M. Yusuf Khan, Kent Johnson, Thomas Durbin, Heejung Jung, David Cocker, Dipak Bishnu, Robert Giannelli

Atmospheric Environment | August 2012

Comparison of an On-Board, Real-Time Electronic PM Sensor with Laboratory Instruments Using a 2009 Heavy-Duty Diesel Vehicle

Jim Steppan, Brett Henderson, Kent Johnson, Yusuf Khan, Timothy Diller, Matthew Hall, Anthoniraj Lourdhusamy, Klaus Allmendinger, Ronald Matthews

SAE International | April 2011

Quantifying In-Use PM Measurements for Heavy Duty Diesel Vehicles

Kent Johnson, Thomas Durbin, Heejung Jung, David Cocker, Dipak Bishnu, Robert Giannelli

Environmental Science Technology | June 2011

On-road comparison of a portable emission measurement system with a mobile reference laboratory for a heavy-duty diesel vehicle

Kent Johnson, Tom Durbin, David Cocker, W.J. Miller, Dipak Bishnu, H. Maldonado, N. Moynahan, C. Ensfield, C.A. Laroo

Atmospheric Environment | June 2009

On-Road Evaluation of a PEMS for Measuring Gaseous In-Use Emissions from a Heavy-Duty Diesel Vehicle

Kent Johnson, Thomas Durbin, David Cocker, J. Wayne Miller, Rey Agama, Nate Moynahan, Guru Nayak

SAE International | April 2008

Emissions from heavy-duty vehicles under actual on-road driving conditions

Thomas Durbin, Kent Johnson, J. Wayne Miller, Hector Maldonado, Don Chernich

Atmospheric Environment | June 2008

Evaluation and Comparison of Portable Emissions Measurement Systems and Federal Reference Methods for Emissions from a Back-Up Generator and a Diesel Truck Operated on a Chassis Dynamometer

Thomas Durbin, Kent Johnson, David Cocker, J. Wayne Miller, Hector Maldonado, Atul Shah, Carl Ensfield, Chris Weaver, Mike Akard, Neal Harvey, James Symon, Thomas Lanni, William Bachalo, Greg Payne, Greg Smallwood, Manfred Linke

Environmental Science Technology | July 2007

Real-world emissions of carbonyl compounds from in-use heavy-duty diesel trucks and diesel Back-Up Generators (BUGs)

Aniket Sawant, Sandip Shah, Xiaona Zhu, J. Wayne Miller, David Cocker

Atmospheric Environment | July 2007

Emission rates of regulated pollutants from on-road heavy-duty diesel vehicles

Sandip Shah, Kent Johnson, J. Wayne Miller, David Cocker

Atmospheric Environment | January 2006

Analysis of heavy-duty diesel truck activity and emissions data

Tao Huai, Sandip Shah, J. Wayne Miller, Ted Younglove, Donald Chernich, Alberto Ayala

Atmospheric Environment | April 2006