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Environment Canada/MECA team assesses black carbon emissions in GDI engine exhaust; evaluation of prototype gasoline particulate filter

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Although gasoline direct injection engines (GDI) are a favorable technology for reducing fuel consumption and greenhouse gas emissions, recent studies have shown that GDI vehicles could emit more PM than traditional PFI (gasoline port fuel injection) vehicles as well as heavy-duty diesel trucks equipped with diesel particulate filters.

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SwRI simulations show turbocharged Scuderi Engine could reduce a standard 2011 Nissan Sentras fuel consumption by up to 35% on FTP cycle

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Modelled results of fuel consumption in 2011 Nissan Sentra. The Sentra model was simulated through a standardized Federal Test Procedure-75 (FTP-75) drive cycle for each SSC engine design. up to 54% increase in MPG) was achievable when compared to the model Nissan Sentra using a stock engine without fuel cutoff.

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J.D. Power and Associates study finds EPA emission-compliant heavy-duty engines yielding increase in engine problems, decline in satisfaction

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Technology changes related to revised emissions standards for heavy-duty trucks are causing an increase in heavy-duty truck engine problems and a decrease in overall satisfaction with the powertrain, according to the JD Power and Associates 2012 US Heavy-Duty Truck Engine and Transmission Study. mpg in 2011. Overall Scores.

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Ricardo to support Clean Air Power’s first production-intent MicroPilot natural gas engine project

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If successful, the program will then enter a second phase with the objective to bring a MicroPilot diesel-natural gas engine for the South East Asian and other markets to the start of production in 2017. This first phase of the program is targeted to commence in September 2014 and will last six months. —Clean Air Power CEO John Pettitt.

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New mixed-oxide catalysts shown as viable substitute for platinum catalysts for diesel exhaust aftertreatment

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Under laboratory-simulated diesel exhaust conditions, this mixed-phase oxide material was superior to Pt in terms of cost, thermal durability, and catalytic activity for NO oxidation. Mullite is not only easier to produce than platinum, but also better at reducing pollution in diesel engines. Kyeongjae Cho. Wang et al.,

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2011 Highlander Hybrid Equipped with Larger Engine, Improved Fuel Economy

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2011 Toyota Highlander Hybrid. Toyota has significantly revised its Highlander and Highlander Hybrid crossover sport utility vehicles for 2011. liter V6 for 2011, replacing the previous 3.3-liter The 2011 Highlander Hybrid receives EPA estimated fuel economy ratings of 28 mpg city and 28 mpg highway (8.4 Click to enlarge.

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Mercedes-Benz introduces new engine generation for commercial vehicles; Euro VI compliant

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New medium-duty Euro VI engine. Mercedes-Benz unveiled a new generation of medium-duty engines with the series designation OM 93x. Together with the new heavy-duty OM 470 engine, Daimler is expanding its “BlueEfficiency Power” engine portfolio into a comprehensive range complying with the impending Euro VI emissions standard.

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