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Regulations

EPA proposes to revise national ambient air quality standard for fine particulates

The US EPA has proposed to revise the annual PM2.5 national ambient air quality standard (NAAQS) from 12 ug/m3 (micrograms per cubic meter) to a ...
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CNGDieselEmissions controlGasolineHeavy-duty

Summary of EPA MY2027 heavy-duty engine standards

The US EPA has finalized its standards for heavy duty engines starting model years 2027 and beyond. Here is a summary of the standards and ...
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Emissions controlEnginesFuel EconomyGasolineGreenhouse gas

Gasoline engine new developments in 2022

Yes, OEMs continued developments of new gasoline engines in 2022. Here's a short write-up of key technologies added covering a range of 1.5L to 3L ...
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