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Team characterizes different spray behaviors of first- and second-generation biofuels in a diesel engine

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A team from Instituto Motori in Italy has analyzed the spray behaviors of first-generation (soybean- and rapeseed-biodiesel) and second-generation (gas-to-liquids) biofuels in a diesel engine, both neat (100%) and in a 50% blend with commercial diesel. The reference fuel was commercial diesel. 2011.04.028.

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Study investigates impact of operating conditions and load on soot particle number distribution for diesel and biodiesel

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Among the findings they reported in their paper in the journal Fuel was that under most of the engine operating conditions examined, RME emitted lower soot particle concentration than diesel under both nucleation and accumulation modes. Diesel engines are widely used owing to their high thermal efficiency and low fuel consumption.

Diesel 252
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IEA: improving efficiency of road-freight transport critical to reduce oil-demand growth; three areas of focus

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Yet the growth in oil demand from trucks has outpaced all other sectors—including passenger cars, aviation, industry and petrochemical feedstocks—since 2000 and contributed 40% to global oil demand growth, a similar contribution as cars. Gt in 2050, or 75%, relative to the Reference Technology Scenario.

Oil 150
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SwRI D-EGR gasoline demo vehicle delivers diesel efficiency at lower cost; potential for LEV III/Tier 3 emissions

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The D-EGR engine offers efficiency similar to diesel engine (~40% BTE) but at half the cost; it also demonstrates the potential for meeting the very stringent LEV III/Tier 3 emissions. D-EGR brake specific fuel consumption (BSFC) at 2000 rpm 2 bar BMEP dropped 14.3% from 385 g/kWh to 330 g/kWh in the D-EGR engine.

Gasoline 317
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New study finds GHG emissions from palm oil production significantly underestimated; palm oil biofuels could be more climate-damaging than oil sands fuels

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Historical analysis shows strong acceleration of plantation development in recent years: 70% of all industrial plantations have been established since 2000 and only 4% of the current plantation area existed in 1990. Products from WCSB Oil Sands Crudes Compared with Reference. Earlier post.). GCB Bioenergy. doi: 10.1111/j.1757-1707.2012.01172.x.

Oil-Sands 314
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Deret Transport running 22 Canter Eco Hybrids in fleet; 25% reduction in fuel consumption

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The core of the diesel-electric drive system is the 3.0-liter The benefits of the diesel-electric drive come into play first and foremost in distribution and consolidation operations. Diesel vehicles are only allowed to enter the city between 10 p.m. tonnes, whereby the chassis has a load capacity of up to 4.8

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EPA report shows progress in reducing urban air toxics across US; 50% reduction from mobile sources since 1990

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The US Environmental Protection Agency (EPA) released the Second Integrated Urban Air Toxics Report to Congress—the final of two reports required under the Clean Air Act (CAA) to inform Congress of progress in reducing public health risks from urban air toxics (also referred to as hazardous air pollutants or HAPs).

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