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Downspeeding and supercharging with transmission optimization can deliver fuel economy improvement over downspeeding and turbocharging

Green Car Congress

Researchers from Southwest Research Institute (SwRI) and Eaton have demonstrated the application of downspeeding and supercharging a diesel vehicle, in conjunction with optimizing transmission gear ratios and the shift schedule, to deliver a greater improvement in fuel economy than a downsped and turbocharged configuration.

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Ford adds 3-cylinder, 1.0L EcoBoost engine and 8-speed transmission to lineup; new hybrid transmission in 2012

Green Car Congress

unit features: An offset crankshaft that helps improve fuel economy. Faster cylinder block warm-ups save fuel, especially in cold weather. Consumers are telling us they want to buy affordable vehicles that get many more miles per gallon. It will also play an important role in North America. —Derrick Kuzak.

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Valeo highlighting its micro-hybrid solutions for the US market: i-StARS and ReStart

Green Car Congress

Making automatic engine shut-down and restart more affordable is a viable near-term solution to reducing vehicle CO 2 emission and improving fuel economy. Allowing the engine to stop before the vehicle does, maximizes the fuel economy benefits of a vehicle coasting to a stop.

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Chevy Volt hits 100,000 mark in US sales; almost 1.5B all-electric miles

Green Car Congress

Based on an average new car fuel economy of 25.3 mpg, Volt drivers have saved nearly 58 million gallons of fuel. The second-generation Volt improves on the pioneering work of the original, adding additional electric-only range, improved fuel economy of 106 mpg-e and 42 mpg, and a chassis that is lighter than the original.

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Kia introduces new mild hybrid powertrain, 7-speed DCT

Green Car Congress

Throughout the development process, engineers have been targeting a 7% improvement in fuel efficiency and a 5% improvement in acceleration (0-100 km/h / 62 mph) over the existing six-speed DCT transmission. The new seven-speed dual-clutch transmission will start to appear on production Kia cars in 2015.

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Perspective: A View Into the New GM

Green Car Congress

The morning session started out with an hour long press conference, the highlight being the unveiling of the Volt’s 230 mpg preliminary EPA city fuel economy finding ( earlier post ), as well as a tour showing selected elements from the studios of the four GM North American brands: Chevrolet, GMC, Buick and Cadillac. Click to enlarge.

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Controlled Power Technologies and Advanced Lead-Acid Battery Consortium to unveil LC Super Hybrid at Geneva show; low-cost “micro-mild” demonstrator

Green Car Congress

Despite the enhanced gasoline engine performance the vehicle achieves near diesel levels of fuel economy, but with lower production costs. In 6 th gear, which is taller even than the gearing in the baseline vehicle, the 80 to 120 km/h (50 to 75 mph) top gear acceleration is reduced by 3.5 Advanced lead-acid battery system.

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