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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

Green Car Congress

Volkswagen has developed and deployed a gasoline engine that offers diesel-like fuel economy but is significantly cheaper to buy. By way of comparison: a conventional turbo system diverts part of the exhaust gas stream needed for the forced induction away from the turbine via a wastegate valve as a function of its operating state.

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CPT, TU Wien study finds 48V mild diesel hybrid cuts engine-out NOx 9%, 4.5% fuel economy improvement

Green Car Congress

A joint study by Controlled Power Technologies (CPT) and Austria’s Technische Universität Wien (TU Wien) into 48V diesel mild hybrid technology verified a 9% reduction of NO x in raw engine-out emissions, while retaining the fuel economy and CO 2 benefits of diesel engine technology. —Paul Bloore.

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FEV testing finds Transient Plasma ignition system increases fuel efficiency and decreases emissions

Green Car Congress

Data was collected with the stock ignition system with a representative ignition strategy, followed by comparison to a drop-in replacement with the TPS nanosecond pulsed power ignition system (coil and plug). The Toyota 2.5L engine was tested at FEV North America and results indicate improvements over the stock ignition system.

Emissions 243
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Bosch overview of global diesel markets; optimistic about US, China

Green Car Congress

Bosch, a leading supplier of technology for diesel engines, recently provided an overview of trends it sees in the diesel engine marketplace globally. In 2012, India accounted for 15% of the global market for diesel passenger cars, the second-largest market after Europe. Brazil: no diesel in passenger cars.

Diesel 255
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New GM/Tula DSF cylinder deactivation technology could boost fuel efficiency in engines by up to 15%

Green Car Congress

Comparison of DSF fuel economy gains and costs with competing technologies, from Tula’s 2013 SAE paper. In their 2013 SAE paper, the Tula engineers described two primary benefits from dynamic skip fire technology: Fuel economy improvement via removal of pumping losses and optimization of combustion. Wilcutts et al.

GM 150
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Ford Unveils Ford Fiesta for North America at Los Angeles Auto Show; 1.6L I4 with Ti-VCT Delivers Estimated 40 mpg Highway

Green Car Congress

Fiesta—available in four- and five-door bodystyles—will offer North American buyers a new choice of 15 class-exclusive technologies and projected highway fuel economy of 40 mpg, besting the Honda Fit, Nissan Versa and Toyota Yaris and Corolla. Our fuel economy leader is now a PowerShift automatic. The Ford Fiesta’s 1.6-liter

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VTT, Argonne joint study concludes new technologies to reduce friction should be able to reduce fuel consumption by up to 61% in 15-25 years

Green Car Congress

The study calculated the global fuel energy consumption used to overcome friction in passenger cars in terms of friction in the engine, transmission, tires, and brakes. By comparison, an electric car has only half the friction loss of that of a car with a conventional internal combustion engine. With current technology, only 21.5%

Fuel 186