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Catalytic converters have proven to be reliable and effective in reducing noxious tailpipe emissions. However, they also have some shortcomings in use, and also adverse environmental effects in production: An engine equipped with a three-way catalyst must run at the stoichiometric point, which means more fuel is consumed than in a lean-burn engine.
The President must set tough rules that restore, and later strengthen, tailpipe emissions standards that President Donald Trump trashed while putting us on course to phase in a new car fleet that ...
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.
The issues particular to a global warming video game are usually energy efficiency and the implementation of green technology as ways to reduce greenhouse gas emissions and thus counteract global warming. Global warming games include traditional board games, video games, and other varieties such as role-playing and simulation-assisted ...
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
The Biden administration this week is expected to announce new automobile emissions standards that relax proposed tailpipe limits for three years but eventually reach the same strict standards set ...
The first legislated exhaust (tailpipe) emission standards were promulgated by the State of California for 1966 model year for cars sold in that state, followed by the United States as a whole in model year 1968. Also in 1966, the first emission test cycle was enacted in the State of California measuring tailpipe emissions in PPM (parts per ...
The U.S. House of Representatives voted narrowly on Friday to repeal clean-vehicle rules adopted in March to cut tailpipe emissions by 50% from 2026 levels by 2032. House Republicans said the ...