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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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DOE releases SBIR/STTR FY16 Phase 1 Release 2 topics; hydrogen, electric vehicles, more efficient combustion engines; biogas-to-fuels

Green Car Congress

Reporting must include fuel consumption test results over the entire engine map of the prototype compared with a second, unmodified, otherwise identical engine. All fuel consumption testing must be conducted according to engine industry norms. Statistically valid fuel economy improvements (95% confidence level) of at least 4.0%

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CRC study finds some adverse results from use of mid-level ethanol blends in MY 2001-2009 engines; DOE and ethanol industry say study significantly flawed

Green Car Congress

Out of the two failed tested engine types, both successfully completed the reference testing on E0. For the failed engine which also failed on E0 reference fuel, the failures can not be directly linked to the ethanol content.

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SAE Publishes Revised J1711 Standard to Measure Exhaust Emissions and Fuel Economy of Hybrids and Plug-in Hybrids

Green Car Congress

Also, the list of standard test procedures addressed in SAE J1711 has been expanded to cover all five major test cycle procedures (UDDS, HFEDS, US06, SC03, and Cold FTP) now being used to evaluate vehicle fuel economy. There are two basic exhaust emissions and fuel economy tests described in J1711. Earlier post.)

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First drive: US spec Audi A3 Sportback e-tron plug-in hybrid; 83-86 MPGe with 16-17 mile EV range

Green Car Congress

Although the EPA has not as of this writing released the final fuel economy numbers for the US A3 e-tron, Filip Brabec, Director, Product Management, Audi of America, said that the figures will be around 83 to 86 MPGe combined (depending on the equipment level), with 35 to 39 mpg gasoline only and 16-17 miles of EV range.

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U-M study: Induced driving miles could overwhelm potential energy-saving benefits of connected, self-driving cars

Green Car Congress

Higher fuel economy of CAVs will cause the per-mile fuel cost of travel to drop. This, in turn, will induce additional travel that partially offsets the fuel savings of energy efficiency—commonly referred to as a “rebound effect”. Traditionally, time spent driving has been viewed as a cost to the driver.

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UCR team’s new evolutionary-algorithm-based EMS for PHEVs can deliver >30% fuel savings than conventional controls

Green Car Congress

However, taking into account inter-trip charging information can significantly improve the fuel economy of PHEVs. To address these limitations, we herein propose a generic framework of on-line EMS for PHEVs that uses an evolutionary algorithm (EA) to optimize vehicle fuel economy in real time.

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