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Flywheel hybrid research vehicle delivers up to 22.4% fuel economy improvement in ARTEMIS cycles

Green Car Congress

A research vehicle fitted with a flywheel hybrid system including stop-start has demonstrated improvements in fuel economy of up to 22.4% There is growing support for flywheel hybrid systems across the industry, fundamentally driven by affordability. FHSPV flywheel CVT system layout. Click to enlarge. Earlier post.).

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6-Speed PowerShift automatic in Fiesta, Focus delivers a 10% fuel economy gain

Green Car Congress

The new dual dry-clutch Ford PowerShift six-speed automatic available in the Focus and Fiesta enables a 10% fuel economy gain compared to a four-speed automatic transmission, contributing to both cars delivering as much as 40 mpg on the highway. Less weight helps improve fuel economy.

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Stop/start to be standard with V-6 in Jeep Cherokee and I-4 in 2015 Chrysler 200; up to 3% better fuel economy

Green Car Congress

Chrysler Group is offering fuel-saving Engine Stop-Start (ESS) technology as standard equipment on certain models of the award-winning 2015 Jeep Cherokee mid-size SUV and 2015 Chrysler 200 mid-size sedan. ESS accounts for a one-mpg city-cycle fuel-economy gain in the Ram, the most fuel-efficient truck in its segment.

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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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CMU-led study finds that when Uber and Lyft enter cities, vehicle ownership increases

Green Car Congress

The study found no statistically significant average effect of TNC entry on fuel economy or transit use but did find evidence of heterogeneity in these effects across urban areas, including larger transit ridership reductions after TNC entry in areas with higher income and more childless households. Ward et al. 2020.101933.

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ORNL-developed ACMZ aluminum alloy promises better fuel economy

Green Car Congress

Researchers at ORNL, in partnership with FCA US and Nemak USA, have developed a new suite of aluminum-based alloys that could give automakers a boost in achieving ambitious fuel economy goals. Earlier post.)

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Deadline for comments on EPA fuel-economy rollback is Tuesday

Green Car Reports

Readers who want to make their voices heard in objection to (or support of) the EPA proposal to freeze fuel economy standards have until tomorrow to get their comments in. The EPA proposed in early August to undo Obama-era rules requiring cars to reach increasingly stringent fuel-economy targets through 2025.