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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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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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Opinion: The Bentley Crash in New York is Scrambling Brains

The Truth About Cars

Lower gears are used to help acceleration while higher gears are set up for cruising and maximizing fuel economy. It’s all about keeping your engine in the right rev range the situation, and having more gears helps do that, which can allow for better performance and fuel economy. Basic physics cannot be denied.

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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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Here’s how Nissan might electrify trucks and SUVs for the US

Baua Electric

The executive also noted that a series hybrid is not the best during highway usage or at a steady state of 70 or 75 mph. That generator would return poor fuel economy and it wouldn’t be a good towing experience, and he noted that for mid-size and full-size trucks, the average pickup driver does a lot of that.

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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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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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