article thumbnail

Study finds biodiesel blend reduces total particle mass in emissions but may have greater adverse health effect per mass than diesel

Green Car Congress

They found that total particulate gravimetric mass collected over the engine test cycle was more than 2 times higher for B0 than for B20 fuel. Particle number distributions aggregated over one example drive cycle indicate a unimodal B0 distribution centered at 51 nm, but a B20 distribution with a smaller diameter mode at 32.2

B0 210
article thumbnail

Study finds PM from biodiesel blends may be 50-80% less toxic per unit PM mass than from petroleum diesel

Green Car Congress

The researchers analyzed samples of PM obtained from light-duty diesel engine transient cycle emission tests with two biodiesel feedstocks—soybean (SOY) and waste vegetable oil (WVO)—blended with ultralow sulfur petrodiesel at five different volume percentages of biodiesel, Bxx (B0, B10, B20, B50, and B100). Click to enlarge.

B0 186
article thumbnail

Jatropha Biodiesel-FT Blends Reduce Most Criteria Pollutants Compared to Neat FT; Higher NOx

Green Car Congress

The authors tested JBD blended with FT fuel in volumetric ratios of 0:100, 25:75, 50:50, 75:25, and 100:0 (B0, B25, B50, B75, and B100). However, NO x emissions were higher, and the engine thermal efficiency was slightly lower with higher JBD blends. Compared to FT fuel, higher JBD blends showed higher BSFC and lower thermal efficiency.

B0 199
article thumbnail

Birmingham study finds butanol-gasoline blend reduces GDI engine-out carbonaceous emissions; similar NOx

Green Car Congress

The 33% v/v butanol-gasoline fuel was blended at the University of Birmingham using standard EN228 gasoline with 5% (v/v) ethanol content (B0) and pure n-butanol. Resources. They found that the influence of the butanol depended on engine load. At low loads, butanol’s physical properties (e.g. higher flame speed). —Hergueta et al.

Gasoline 170
article thumbnail

Massachusetts to Accept Only Waste-Derived Biofuels to Qualify for Mandate for Diesel and Home Heating Oil

Green Car Congress

The state Department of Energy Resources has authority to delay the minimum content requirements if there are no biofuels available that meet those standards. Low Carbon Fuel Standard. DOER will announce by 31 December 2010 whether the second-year Biofuels Mandate will be at the 2% or 3% level. Massachusetts Clean Energy Biofuels Act.

article thumbnail

Optimizing Turbo Diesels for Emissions and Performance with 5% and 20% Biodiesel Blends

Green Car Congress

With each fuel at each operating location, the optimal ECM parameter settings resulted in the reduction of BSNO x , BSPM, and peak dP/dt to levels comparable to or lower than the corresponding nominal B0 levels. The ability to produce emission and noise decreases were subsequently leveraged to produce BSFC reductions. Fuel was donated by BP.

Diesel 186