Clean Air Initiative: GlobalClean Air Initiative: AsiaIniciativa del Aire Limpio: América LatinaClean Air Initiative: Sub-Saharan Africa
Advanced Search
Countries
Topics
CAI Listserv
Air Quality Newsletters
Opportunities

Better Air Quality (BAQ) 2008
was held in Bangkok, Thailand
12-14 November 2008

Join the CAI-Asia Partnership

Effect of Biodiesel Blends on Diesel Particulate Filter Performance
Tests of ultra-low sulfur diesel blended with soy-biodiesel at 5% and 20% were conducted using a 2002 model year Cummins ISB engine (with exhaust gas recirculation) that had been retrofitted with a passively regenerated catalyzed diesel particulate filter (DPF).

Tests of ultra-low sulfur diesel blended with soy-biodiesel at 5% and 20% were conducted using a 2002 model year Cummins ISB engine (with exhaust gas recirculation) that had been retrofitted with a passively regenerated catalyzed diesel particulate filter (DPF). Results show that on average, the DPF balance point temperature (BPT) is 45°C and 112°C lower for B20 blends and neat biodiesel, respectively, than for 2007 certification diesel fuel. Biodiesel causes a measurable increase in regeneration rate at a fixed steady-state condition, even at the 5% blending level. The data show no significant differences in NOx emissions for these fuels at the steady-state regeneration conditions, suggesting that differences in soot reactivity are responsible for the observed differences in BPT and regeneration rate.

Results also indicate a much more disordered soot structure, containing higher levels of oxygen as biodiesel is blended into the diesel fuel. The soot produced from biodiesel and blends is much more reactive in oxygen than diesel soot. It is concluded that the lower balance point temperature and higher DPF regeneration rates for biodiesel containing fuels are observed because the soot generated from these blends is more reactive.

URL: http://www.nrel.gov/vehiclesandfuels/npbf/pdfs/40015.pdf

Quick Links

Who we are:
- CAI-Asia Center
- CAI-Asia Partnership
- Country Networks

Key documents:
- Annual Report 2008
- Fuel Roadmap
- Country Synthesis Reports
- Compendium | CitiesACT.org
- Benchmarking Report
- Quarterly Report (Center)
- Newsletters
...........................more >>

Programs and Activities:
- Air Quality Program
- Transport Program
...........................more >>

Related Topics
Mobile sources
Mobile sources > Cleaner fuels and energy sources
Cleaner fuels and energy sources > Alternative fuels and energy sources
Alternative fuels and energy sources > Biodiesel

Secretariat: CAI-Asia Center, 3510 Robinsons Equitable Tower, ADB Ave., Ortigas Center, Pasig City, Philippines 1605
Tel: +632 3952843 to 45 / Fax: +632 3952846