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BorgWarner suggests Valve-Event Modulated Boost system can offer 6-17% fuel economy benefit over already downsized and turbocharged engines

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By separating the two parts of the exhaust event by phasing the exhaust valves via the concentric camshaft, VEMB allows the turbo to capture the blow-down energy while avoiding pumping losses through the turbocharger. to 2 ratio points and maintain the same knock limit for an additional 3-4% improvement in fuel economy. and Sisson, J.

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Study Assesses Product Attribute Trade-offs and Technological Progress; Meeting Proposed Obama Fuel Economy Standards Will Require Downsizing and Change in Fleet Mix

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Changes in the attributes (clockwise from upper left, weight, power, fuel economy and torque) of the Honda Accord over time as an example of fleet trends in the US. In contrast, fuel economy actually increased by 15% during that period. As part of the study, Knittel also investigated the relative efficiencies of manufacturers.

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

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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 researchers found that the combination of technologies allowed improvements in fuel economy over the engine drive cycle.

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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. The FEV variable length connecting rod is part of the third group. Kleeberg, H., Tomazic, D.,

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Ford / AVL study concludes mid-level ethanol blend attractive as a long-term future fuel for use in optimized engines in US

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As a result, as the ethanol content of the fuel is increased, the fuel economy and driving range for a given fuel tank size are reduced. Downsizing/downspeeding. This increase in BMEP can enable downsizing of the engine displacement and/or downspeeding through revised gear ratios, findal drive ratio, or shift scheduling.

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Center for Automotive Research calls long-run economic risk to auto industry of mandating permanent fuel economy standards very serious; recommends periodic reviews

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Based on the results of the study, CAR believes the economic risk to the auto industry connected to mandating permanent fuel economy standards in the long run is “ very serious ” The group recommends periodic review to assess the rate of technology development and cost reduction of advanced technologies leading up to 2025.

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Navigant forecasts global road transportation energy consumption to increase 25% by 2035; 84% from conventional fuels

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Most developed countries in Western Europe and parts of Asia Pacific will also exhibit similar decreases in energy consumption. The shape and form of road transportation alternative fuels markets vary greatly by region, largely influenced by government regulations, local resources, infrastructure, and fuel prices.