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The mechanism by which exhaust emissions are controlled depends on the method of injection and the point at which air enters the exhaust system, and has varied during the course of the development of the technology. The first systems injected air very close to the engine, either in the cylinder head's exhaust ports or in the exhaust manifold.
1998: Diesel engine standards further increased in efforts to reduce ozone and PM emissions for various vehicles including industrial equipment. 1999: Tailpipe emission standards are finalized, sulfur contents in gasoline are reduced, and various boats/other marine vehicles using diesel had reduced emission limits for NOx and PM. [7]
The EPA Federal Test Procedure, commonly known as FTP-75 for the city driving cycle, are a series of tests defined by the US Environmental Protection Agency (EPA) to measure tailpipe emissions and fuel economy of passenger cars (excluding light trucks and heavy-duty vehicles).
The rules will cut tailpipe emissions in half by 2055, and the EPA claimed that they would also help the average driver in the U.S. to save $6000 in fuel and maintenance costs over the life of ...
A year ago in April, the U.S. Environmental Protection Agency (EPA) shocked the auto industry and heartened environmentalists by proposing tailpipe emissions standards so strict that, by model ...
The Biden administration on Wednesday finalized one of the most important pieces of its climate agenda: new tailpipe rules for passenger cars and trucks that will decisively push the US auto ...
In 2004, California approved the world's most stringent standards to reduce auto emissions, and the auto industry threatened to challenge the regulations in court. The new regulations required car makers to cut exhaust from cars and light trucks by 25% and from larger trucks and SUVs by 18%, standards that must be met by 2016. [28]
The Environmental Protection Agency in April 2023 proposed requiring a 56% reduction in new vehicle emissions by 2032. US to soften tailpipe rules, slow EV transition through 2030 Skip to main content