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EIA: trends in downsized engine design leading to increased demand for higher-octane gasoline

Green Car Congress

This trend of increasing demand for higher octane gasoline is likely driven by changes in fuel requirements for light-duty vehicles (LDV) in response to increasing fuel economy standards, which will have widespread implications for future gasoline markets, according to EIA analysts.

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FEV to show 2nd generation diesel High Efficiency Combustion System at 2011 SAE World Congress

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will exhibit its High Efficiency Combustion System (HECS) diesel engine at the 2011 SAE World Congress, 12-14 April at Cobo Center in Detroit. The second-generation HECS has been adapted to a downsized 1.6L A dual-wall exhaust also reduces heat loss in order to accelerate catalyst light-off during cold starts.

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Simulation study finds “Millerizing” the Scuderi split-cycle engine could enable 50% engine downsizing with retention of power and torque, along with reduced fuel consumption

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Simulation study finds Miller version of Scuderi engine can deliver twice the BMEP as naturally aspirated version, theoretically enabling 50% downsizing while maintaining performance. Applying the Miller cycle to the Scuderi engine (right) entails downsizing of the compression cylinder. Source: Scuderi. Click to enlarge.

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New Delphi 500+ bar GDi system cuts particulates by up to 50% without engine changes

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With an innovative new sealing system and a new, downsized plunger, Delphi Technologies’ high-efficiency fuel pump delivers the increased pressures needed without increasing the load on the on the engine’s camshaft. Left: GDi 500+ injector. Right: GDi 500+ fuel pump. —Walter Piock, chief engineer, Delphi Technologies.

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

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Future RDE emissions legislation and fleet average CO 2 targets represent a challenge for automakers wishing to provide cost-effective light duty diesel vehicles. The introduction of RDE regulations in Europe represents a very significant challenge, particularly for those automakers offering light duty diesel products.

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Ricardo’s “deep” Miller cycle concept: Magma

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In its new report on downsized and boosted gasoline engine technologies ( earlier post ) the ICCT highlighted Ricardo’s work on an “extreme” Miller cycle concept with high (13:1) compression ratio (CR) and central direct injection in a downsized boosted engine. A long exhaust stroke then extracts maximum efficiency. Resources.

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New Delphi Technologies 500+ bar GDi system cuts gasoline particulate emissions by up to 50%, reduces fuel consumption

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Reducing the number of exhaust gas particulates, including those smaller than 23 nm, will help manufacturers meet increasingly stringent future global emissions standards. Reducing engine-out emissions cuts tailpipe emissions in the crucial period before catalyst light-off and reduces the need for costly aftertreatment systems.

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