Measuring Real-World Vehicle Emissions

Table of Contents

Key Questions

How Do We Measure On-Road Emissions at NC State?

What is the OEM-2100?

What Kind of Engine Data Can You Measure?

How Do You Install the OEM-2100?

Powering the OEM-2100

Getting Engine Data

Measuring Tailpipe Emissions

Securing the Sampling Hose

Tailpipe Gas Sampling

Calibration

Starting the Instrument

Measuring the Engine

Verify Data Acquisition

Verify Emissions Calculations

Ready for the Road

What Kind of Vehicles Can You Measure?

Real-World Driving

Example Measurement: Vehicle Speed Trace

Example Measurement: Carbon Monoxide Emissions

Factors Influencing Emissions: Driving Mode

Summary of Trip Data for a Commuting Trip

An Example for Highway Driving (Level Road)

Carbon Monoxide Emissions for Each Driving Mode for Highway Trip

Summary of Highway Trip

Comparison of Commuting and Highway Trips

Emissions in Perspective

Factoid: A Car Emits More Than Its Weight in Exhaust Gas Every Year!

Benefits of On-Road Emissions Measurements

Some Driving Tips

For More Information

Acknowledgments

Interested in Related Studies at NC State?

Measuring Real-World Vehicle Emissions: General Information

Email: frey@eos.ncsu.edu

Home Page: http://www4.ncsu.edu/~frey/emissions/presentations.html

Other information:
This is a general presentation giving an overview of work at NC State University involving on-road on-board emission measurements of highway vehicles. Please contact Dr. Frey if you wish to use this presentation for other than personal viewing.