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VW Premieres New Polo GTI; Textbook Downsizing Results in 25% Reduction in Fuel Consumption from Predecessor

Green Car Congress

The new Polo GTI, in what Volkswagen is calling “textbook downsizing”, is powered by a new 1.4-liter By comparison, its direct predecessor with regard to power—equipped with a 132 kW 1.8-liter The GTI variant in the Polo model range is sporty and safe. The new Volkswagen Polo GTI. Click to enlarge.

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Study Finds Strong Synergy Between Spark Ignition Engine Downsizing and Low-to-Moderate Alcohol Blend Fuels

Green Car Congress

A study by engineers from Mahle Powertrain Ltd and BP found strong synergy between spark ignition (SI) engine downsizing and fuel containing low-to-moderate amounts of alcohol, including ethanol and butanol. The team presented a paper on their work at the recent SAE 2009 World Congress in Detroit. SAE 2009-01-0138). Cairns et al.

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Hyundai completes development of 3rd generation fuel cell vehicle; targeting mass production in 2015

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The SUV has a full-tank range of 650 kilometers (404 miles)—equal to that of a gasoline-powered car. The Tucson ix FCEV’s range is a 76% improvement over the second-generation Tucson FCEV, which was limited to 370 kilometers (230 miles) on one filling. It can start in temperatures as low as -25 °C (-12 °F). Drive system.

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Ricardo: achieving light-duty diesel RDE NOx compliance in urban driving is possible, at a price

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A range of aftertreatment technology options are available to automakers seeking to achieve compliance with the impending EU Real Driving Emissions (RDE) regulations, according to the results of a Ricardo research project presented recently at the SIA Powertrain international conference and exhibition in Rouen, France. liter diesel engine.

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FEV’s two-stage VCR system; 5-7% increase in fuel economy using variable length conrods

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downsized, turbocharged) gasoline engine, as operating an engine with higher compression ratios at low load can increase fuel economy compared to operating an engine with fixed compression ratio. In comparison, naturally aspirated engines have a higher compression ratio in the order of 1 to 1.5 Click to enlarge.

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CALSTART survey of major auto suppliers finds 70% don’t want US to change CAFE targets; split on amount of electrification needed

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Suppliers identified a wide range of conventional and electric technology that could be used to meet the standards. In comparison, 24% of survey respondents felt that there would be sufficient improvements in ICE technologies, lightweighting and hybridization technologies to meet the 2025 targets without additional electrification.

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ICCT working paper highlights benefits of current and emerging light-duty diesel technology; “promising pathway for compliance”

Green Car Congress

In addition, they found that many systems are capable of NO x conversion over a wide temperature range at rates close to those of three-way catalytic converters on gasoline vehicles. Comparison of rulemaking and ICCT/supplier estimates of direct manufacturing cost per percent fuel consumption reduction in 2025. Click to enlarge.

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