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EIA: fuel economy improvements bring diminishing returns in fuel savings

Green Car Congress

Improving fuel economy exhibits diminishing returns in fuel savings, according to a brief analysis by the US Energy Information Administration (EIA). Similarly, the fuel and cost savings of improving fuel economy from 12 mpg to 15 mpg are the same as increasing from 30 mpg to 60 mpg.

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Consumer Reports finds Honda Accord hybrid fuel economy “impressive”, but short of EPA 47 mpg rating

Green Car Congress

Consumer Reports fuel economy tests found the Honda Accord Hybrid delivered impressive overall fuel-economy of 40 mpg (5.88 l/100 km), tying the smaller Honda Civic Hybrid and falling below the top-performing and smaller Toyota Prius hatchback by only 4 mpg. Earlier post.). Earlier post.).

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ORNL study finds best current use of natural gas for cars is efficient production of electricity for EVs

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However, they also noted, high PTW efficiencies and the moderate fuel economies of current compressed natural gas vehicles (CNGVs) make them a viable option as well. If CNG were to be eventually used in hybrids, the advantage of the electric generation/EV option shrinks. —Curran et al.

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Two new generation TwinPower Turbo diesels in BMW 518d and 520d; up to 57.4 mpg

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liter four-cylinder diesel engines in the 5 Series which boost the output of the new BMW 518d and new BMW 520d by another 5 kW apiece. mpg US) (European cycle) and CO 2 emissions to 109 g/km; this marks a reduction in consumption and CO 2 emissions in the EU test cycle by as much as 0.4 mpg US) with CO 2 emissions of 114–124 g/km.

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Volkswagen Millerized 1.5 TSI ACT BlueMotion gasoline engine offers diesel-like fuel economy; derivatives may be applied in hybrid systems

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Volkswagen has developed and deployed a gasoline engine that offers diesel-like fuel economy but is significantly cheaper to buy. l/100 km (49 mpg US). l/100 km/h (59 mpg US). TSI ACT BlueMotion, however, it is possible to route 100% of the exhaust gas stream via the turbine at any time by means of VTG.

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2014 Ram 1500 EcoDiesel earns 28 mpg highway; best in segment

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liter V6 EcoDiesel-powered 2014 Ram 1500 pickup ( earlier post ) has earned a 28-mpg (8.4 The combined city/highway rating is 23 mpg (10.2 liter Pentastar V-6 gasoline engine earned 25 mpg (9.4 liter Pentastar V-6 gasoline engine earned 25 mpg (9.4 Diesel Engines Fuel Efficiency' l/100 km.). The all-new 3.0-liter

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ExxonMobil: diesel will surpass gasoline as the number one global transportation fuel by 2020

Green Car Congress

Diesel will surpass gasoline as the number one transportation fuel worldwide by 2020 and continue to increase its share through 2040, according to ExxonMobil’s recently published Outlook For Energy: A View To 2040. Diesel demand accounts for 70% of the growth in demand for all transportation fuels through the forecast period to 2040.

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