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Comparative study finds that B20 increases emission rates of a number of pollutants in both light- and medium-duty diesel engines at idle

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L) diesel engines at idle and load, using a biodiesel blend (B20) and conventional ultralow sulfur diesel (ULSD) fuel. They found that the level of emissions of regulated and unregulated pollutants in diesel exhaust depends on fuel, load, engine calibration, and exhaust aftertreatment technology.

Pollution 231
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U Mich study explores performance of renewable diesel, FT diesel and ULSD in PCCI combustion

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A team at the University of Michigan has investigated the performance of three different fuels—ultralow sulfur diesel (ULSD), diesel fuel produced via a low temperature Fischer–Tropsch process (LTFT), and a renewable diesel (RD), which is a hydrotreated camelina oil under partially premixed compression ignition (PCCI) combustion.

Diesel 150
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Study Finds Fumigation Ethanol Operation with Diesel Reduces PM and NOx, While Oxidation Catalyst Reduces Resulting Increased CO and HC

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A study by researchers at The Hong Kong Polytechnic University and Tianjin University has found that the use of fumigation ethanol in a 4-cylinder diesel decreases NO x , smoke and particulate mass and number concentrations. In addition, the diesel fuel used in previous research has a high sulfur content of 0.25% by weight.

Diesel 225
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NREL announces $18M investment in 9 new projects to advance medium- and heavy-duty natural gas vehicle technologies

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will address natural gas engine emissions and efficiency improvements by developing a natural gas specific combustion design utilizing optimized in-cylinder charge motion and cooled exhaust gas recirculation (EGR). g/bhp-hr NO x capability with reduced aftertreatment cost; and demonstrating a diesel-like torque curve. Cummins Inc.

Gas 191
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FedEx adds 1,900 new lightweight composite Reach vans to fleet; 35% fuel efficiency improvement

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liter Isuzu diesel engine, demonstrates a 35% fuel efficiency improvement over traditional vehicles in the FedEx Express fleet. The Reach van, with its four-cylinder, 3.0-liter

Fleet 240
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Global Commercial Vehicle Industry Meeting endorses harmonized global approach to improve fuel efficiency and reduce GHGs

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Meeting in Chicago, the chief executives of commercial vehicle and engine manufacturers in Europe, Japan, and the United States discussed fuel efficiency and greenhouse gas emissions reductions, diesel fuel specifications, and topics related to heavy-duty engine and vehicle regulation and certification.

Global 239
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LiquidPiston introduces latest X-series version of HEHC rotary engine; targeting 58% peak BTE, 2 hp/lb power density

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Isuzu D201 35 hp diesel engine (left) and the LiquidPiston 40 hp X2 Prototype (right). Other features of the X2 include: Quiet operation: engine lacks poppet valves and over-expansion minimizes exhaust noise. HEHC thermodynamic advantages relative to the diesel and the Otto cycles. Click to enlarge. LiquidPiston, Inc.

Engine 312