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Diesel Particulate Filter (DPF) Demonstration Project

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The Clean Air Strategic Alliance (CASA) is a non-profit association composed of diverse stakeholders including government, industry and non-governmental organizations. These participants are committed to developing and applying a comprehensive air quality management system for the people of Alberta through a collaborative and consensus-based process.

What are they doing?

This project evaluates the effectiveness of the new DPF technology during normal operations and its feasibility for use in urban transit fleets in Alberta. It also aims to make the public and the transportation industry more aware of existing and emerging DPF emission reduction technology. Two diesel-powered Edmonton Transit buses are retrofitted with DPF emission reduction devices. Emissions of particulate matter, hydrocarbons and carbon monoxide are monitored for up to one year.

This project could improve air quality, increase public awareness of air quality issues and stimulate the transportation/transit industry to take greater interest in, and eventually adopt, air pollution reduction measures.

What did the project accomplish?

During the test period, the buses were equipped with data loggers to monitor engine minimum, maximum and average back-pressure and exhaust temperatures. They were operated on regular service rotation. Two test periods in February 2003 and January 2004 examined emissions of particulate matter, total hydrocarbons and carbon monoxide. To help build public awareness, the two test buses had vinyl wrap advertisements applied to their exterior as well as interior information panels. Notable results include:

  • 20+ stories in all media
  • 10,000 brochures handed out on two pilot buses
  • Project reinforced existing partnerships between CASA members
  • Continuously Regenerating Diesel Particulate filter tested and efficiency confirmed
  • Hydrocarbons reductions of 51 - 87%
  • CO reductions of 67 - 89%
  • Particulate matter reduced 60 - 75 %

Where can you find more information?

Diesel Particulate Filter (DPF) Test Project

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Date modified:
2010-02-03