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Pierburg GmbH electric compressor for turbos

Green Car Congress

Pierburg GmbH, part of the KSPG Group, has developed an electric compressor for spontaneously boosting the charge pressure of engines fitted with an exhaust-gas turbocharger. This component allows pressure to be increased regardless of the exhaust-gas energy availability. Initial prototypes are now being tested by various customers.

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Mazdas new SKYACTIV gasoline and diesel engines are steps on the road to its Ideal Engine; focus on compression ratio

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Since this energy loss is primarily thermal in nature and can be attributed to the exhaust, cooling system, and engine and transmission surfaces, Mazda’s R&D team’s central focus is on improving the engine’s thermal efficiency cost-effectively. Extreme compression ratio rather than downsizing. Although downsizing—i.e.,

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Aeristech Secures £500,000 to Support Development of Electromechanical Turbocharger

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to eliminate turbo lag—in support of aggressive engine downsizing. The separate components are connected electrically. CPT recommends a combination of the highly dynamic electric supercharger in series with a conventional exhaust-driven turbocharger to optimize the overall response of the system, compared to other air charging methods.

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ETH Zürich Developing Pneumatic Hybrid Engine; Approaches Hybrid-Electric Performance at Lower Cost

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Researchers at ETH Zürich are developing a pneumatic hybrid engine—an internal combustion engine connected to a compressed air tank instead of a battery system. The compressed air supply also allows extreme downsizing. Downsizing the engine in this instance halves the number of cylinders from four to two. Dönitz et al.

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2014 Sprinter van for US standard with new 2.1L diesel; new driver assistance features

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Since 2010, all Sprinters in the US have been powered by BlueTEC diesel engines, marking the first use of BlueTEC technology, with its selective catalytic reduction (SCR) exhaust aftertreatment system, in the commercial van market here. The two overhead camshafts actuate 16 intake and exhaust valves. with a variable delivery rate.

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Lexus NX compact utility arrives in North America

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liter turbocharged gasoline engine has a combination water-cooled cylinder head, integrated exhaust manifold and twin-scroll turbocharger. To minimize turbo lag, the four-into-two exhaust manifold system pairs cylinders according to their expansion or compression stroke to reduce pumping losses and eliminate exhaust gas interference.

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Nissan unveils 2013 Altima Sedan; 38 mpg highway

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It now includes variable valve timing on both exhaust and intake camshafts, and the new intake system opens the valves at a higher rpm to help keep the torque curve flat. The Altima offers a choice of a redesigned 2.5-liter liter DOHC inline 4-cylinder engine or 3.5-liter liter QR25 engine has been redesigned to be lighter and more efficient.

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