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Studies highlight effects of different gasoline components on fuel economy, combustion and emissions

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Researchers at Jilin University (China) have investigated the effect of gasoline components on fuel economy, combustion and emissions in a GDI (gasoline-direct-injection) engine. The team subsequently followed up this first study with a second, exploring the effects in a PFI (port-fuel-injection) engine.

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Allison Transmission introduces new 9AT for release in 2020; extends xFE fuel-saving to Series 1000, 2000

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With its deep first gear ratio and industry-leading ratio coverage, the Allison nine-speed transmission provides significant fuel savings as the efficient gear train allows the torque converter to lock up early in first gear. —Randy Kirk, senior vice president of product engineering and product teams with Allison Transmission.

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Researchers propose optimization strategy for Atkinson cycle engines in hybrids

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A team from the Beijing Institute of Technology and Beiqi Foton Motor are proposing a performance optimization strategy for the Atkinson cycle gasoline engine, which is playing a key role in the development of hybrid electric vehicles due to its greater fuel economy than a conventional Otto cycle engine. —Niu et al.

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UPS Sets New Automotive Goal to Improve Package Delivery Fleet Fuel Economy a Total of 20% from 2000 to 2020

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UPS is targeting a 20% improvement in fuel economy for its US package delivery fleet from 2000 to 2020. UPS has set a new automotive goal to improve the miles per gallon (MPG) performance of its entire US package delivery fleet by 20 percent between 2000 and 2020. Click to enlarge. In 2009, UPS drivers logged 77.3

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Bentley’s new 616hp 12-cylinder GT Speed convertible with 8-speed and energy recuperation improves fuel economy by 15%

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liter W12 combined with a close-ratio eight-speed ZF transmission to deliver a 15% improvement in fuel economy. Provisional EPA fuel economy ratings for the convertible are 12 mpg city, 20 mpg highway, and 15 mpg combined. Provisional EU cycle fuel consumption figures are 22.7 The Continental GT Speed Convertible.

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SwRI develops D-EGR demonstrator highlighting fuel-efficient, cost-effective engine; 10% and above fuel economy improvements

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Southwest Research Institute (SwRI) has built a demonstrator vehicle, based on a 2012 Buick Regal GS, incorporating the latest D-EGR (dedicated EGR) technology ( earlier post ), an outgrowth of SwRI’s HEDGE (High Efficiency Dilute Gasoline Engine) consortium projects ( earlier post ). The compression ratio of the engine was increased to 11.7:1

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Nissan introduces new Navara pickup with fuel economy improved by up to 11% over previous model

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The NP300 Navara’s powertrain delivers improved performance, with reduced fuel consumption and emissions, as well as a dynamic control braking system that makes for a leader in segment performance. Engine options have been developed for best in class fuel efficiency and emissions ratings.