Comparison of heavy-duty diesel engine emissions between an on-road route and engine dynamometer simulated on-road cycle

Heavy-duty diesel engines are known to emit concentrations of harmful compounds of oxides of nitrogen (NOx) and particulate matter (PM). As a means of emissions control, engine dynamometer certification is currently employed. Current certification cycles provide for standardized comparisons, but may not be indicative of real-world emissions. Accurate in-use emissions testing would provide more realistic engine emissions values.;To examine the accuracy of the West Virginia University Mobile Emissions Measurement System (MEMS), on-road emissions tests were performed with six different diesel-powered vehicles. Exhaust species measured by MEMS were NO x and CO2, reported on a brake-specific basis. Information obtained during on-road emissions tests was implemented in the creation of a simulated in-use engine dynamometer cycle, and the system was compared against an engine dynamometer laboratory.;The ability to accurately generate an in-use driving cycle for an engine dynamometer was studied, and variables affecting route repeatability were measured. (Abstract shortened by UMI.).

Name thesis:degree_name

MS

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Mechanical and Aerospace Engineering

Year dc:date.available

2003

Author dc:creator

• Gibble, John Curtis

Contributors dc:contributor

• Gregory J. Thompson.

• Mechanical engineering
• Automotive engineering
• Environmental engineering

Identifier

https://researchrepository.wvu.edu/etd/1349

OAI identifier oai:identifier

oai:researchrepository.wvu.edu:etd-2352