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EPA finalizes Tier 3 fuel and emissions standards

Green Car Congress

The US Environmental Protection Agency (EPA) finalized its Tier 3 emission standards for gasoline sulfur content; evaporative emissions; and tailpipe emissions from passenger cars, light-duty trucks, medium-duty passenger vehicles, and some heavy-duty vehicles. EPA had issued the proposed standards last March. Earlier post.).

EPA 300
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EPA proposes Tier 3 standards for gasoline sulfur content and vehicle emissions; harmonized with California LEV III

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The US Environmental Protection Agency (EPA) proposed long-anticipated Tier 3 standards for gasoline sulfur content; evaporative emissions; and tailpipe emissions from all light-duty vehicles (LDVs, or passenger cars), light-duty trucks (LDT1s, LDT2s, LDT3s, and LDT4s) and Medium-Duty Passenger Vehicles (or MDPVs). Vehicle emissions.

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DOT, EPA unveil joint proposal for fuel economy and greenhouse gas emission standards: 49.6 mpg CAFE, 163 g/mile GHG in 2025; flexibilities and incentives

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The US Environmental Protection Agency (EPA) and the US Department of Transportation (DOT) formally unveiled their joint proposal to set stronger fuel economy and greenhouse gas pollution standards for Model Year 2017-2025 passenger cars and light trucks. EPA’s proposed GHG standards, which are. mpg US (5.87 mpg US (5.87

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Obama Administration announces first fuel economy and GHG standards for medium- and heavy-duty vehicles

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US President Barack Obama announced fuel efficiency and greenhouse gas emission standards for medium- and heavy-duty vehicles. Heavy-duty engines affected by the final standards are generally those that are installed in commercial medium- and heavy-duty trucks and buses. The standards will phase in to the 2017 levels shown in Table 1.

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ICCT life-cycle analysis finds no climate benefit in using LNG as marine fuel

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Additionally, LNG engines are tuned to either emit low nitrogen oxide (NO x ) emissions—at the cost of higher methane emissions in some cases—or to incorporate NO x reduction technologies such as exhaust gas recirculation (EGR) or selective catalytic reduction (SCR). As of November 2019, VLSFO was nearly as expensive as MGO.

Mariner 427
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UCSD, South 8 team report improved liquefied-gas electrolytes for Li-metal batteries

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Improvements to a class of battery electrolyte first introduced in 2017—liquefied gas electrolytes—could pave the way to replacing the graphite anode with a lithium-metal anode. cycling efficiency reported in the 2017 Science paper, and an 85% cycling efficiency for lithium metal anodes with a conventional (liquid) electrolyte.

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U of Toronto study finds US electrification of LDV fleet not a silver bullet for tackling climate change in vehicle sector

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a,b, Baseline cases (top dark-blue bar) and changes in emissions associated with increasing LDV travel demand, fuel consumption standards and electrification assuming current fuel economy policy (SAFE standards) (a) and stringent fuel economy policies (CAFE standards for conventional vehicles, along with high vehicle size and weight control) (b).