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CARB will host a seminar for a research study on how agricultural equipment with diesel engines operates in real-world farming in the San Joaquin Valley, California. In the study, agricultural equipment activity data was collected by data loggers instrumented on operating tractors and through operator-maintained records.
Date: Thursday, April 3, 2025
Time: 10:00 a.m. – 12:00 p.m.
Location: Webinar
Please register for the workshop. After registering, you will receive a confirmation email with information about how to join the webinar by computer or telephone.
Background
Off-road diesel engines are widely used in agricultural goods production and supply, and can contribute to poor air quality in regions not meeting the National Ambient Air Quality Standards for particulate matter (PM) or ozone, such as the San Joaquin Valley (SJV) in California. Developing accurate emission inventory is key to understanding the impact of California agriculture tractors on air quality. CARB has continued to update its emission inventory for diesel agricultural equipment, based on most recent information available including agricultural equipment surveys. However, there had been a lack of data on agricultural engines’ activity patterns and fuel consumption in real-world operation.
To inform future updates to the emission inventory and to inform policies and incentive programs in California, CARB needs real-world activity data for diesel agricultural equipment. This seminar will discuss CARB’s recent study collecting agricultural engine parameters using data loggers instrumented on equipment in real-world farming operation and engine operation time through operator-maintained records. The seminar will characterize important operation parameters such as operation hours, engine load, idle time fraction, and fuel consumption. The seminar will also compare the collected in-use data with what the existing engine certification test cycles entail, and will illustrate a new test cycle developed based on the collected in-use data.
For more information about this research project, visit the project’s webpage. The project webpage will host the final report and seminar recording once they become available. For more information about CARB’s Research Program, visit our website or email us directly with any questions or comments at research@arb.ca.gov. The final report is available to view or download on the project webpage. The seminar recording will also be posted to the project webpage one to two weeks after the seminar.
Biography
Dr. Tom Durbin is a Research Engineer in the emissions from advanced vehicles and fuels research group of University of California at Riverside’s College of Engineering – Center for Environmental Research & Technology (CE-CERT), an adjunct professor in the Chemical and Environmental Engineering Department, and a fellow of the SAE International. He is conducting research in the area of vehicle emissions with an emphasis on studying in-use emissions and activity, fuels, advanced technology vehicles, and particles. Prior to joining the vehicle emissions group, Dr. Durbin was involved in several other areas of research at CE-CERT including renewable energy and fuel sources and advanced vehicle technologies.
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