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Study finds catalyzed gasoline particulate filters effective at reducing particulate and PAH emissions from GDI engines

Green Car Congress

Their study is publishedin the ACS journal Environmental Science & Technology. The researchers assessed the gaseous, particulate, and genotoxic pollutants from two current technology gasoline direct injection vehicles when tested in their original configuration and with a catalyzed gasoline particulate filter (GPF).

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Audi using supplementary port fuel injection to address particulates from gasoline direct injection

Green Car Congress

In part-load operation, the indirect injection supplements direct gasoline injection to improve fuel economy and to reduce the output of particulates from the engine. The EU has set a standard for 6 × 10 12 number/km limits between 2014 and 2017, tightening to 6 × 10 11 number/km. Earlier post.). Earlier post.) Earlier post.).

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Ford study suggests GDI engines can meet coming California and US PM emissions standards over 150k miles; more work to be done

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However, unlike conventional gasoline engines, gasoline direct injection engines produce particulate matter, as do diesels, and emission controls will become an issue the technology must address as standards for particle mass tighten, and also as standards for particle numbers emerge. gasoline blend. and fuel properties.

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Bosch leading Direct4Gas consortium to develop direct injection for monovalent natural gas engines

Green Car Congress

Today’s CNG vehicles are generally bivalent, running on gasoline and CNG with engines designed for gasoline direct injection. However, because methane behaves differently from gasoline when injected directly, it is important to optimize the combustion process for methane. million (US$4.3 By 2025, this limit could be even lower.

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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

Green Car Congress

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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Study: splash blended ethanol fuels with higher ethanol percentage enable higher thermal efficiency in SI engine

Green Car Congress

A downsized gasoline engine is one of the proven technologies that improves engine thermal efficiency and thus reduces automotive fleet CO 2 emissions, by as much as 25%. Ethanol, a widely used renewable gasoline alternative, has a much higher octane rating than conventional gasoline fuel. and 85 vol.%

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ICCT-led analysis of turbocharged, downsized engine tech finds lower costs and greater benefits than 2012 EPA/NHTSA analysis; 48V, e-boost, Miller

Green Car Congress

A new white paper published by the International Council on Clean Transportation (ICCT), in collaboration with Eaton, Ricardo, JCI, BorgWarner, Honeywell, and the ITB Group, analyzes current turbocharged, downsized gasoline engine technology developments and trends. Source: ICCT. Click to enlarge.