2002 Downsizing Exhaust Gas-Electric 
Green Car Congress
JUNE 11, 2019
In the latter, CARB staff signaled a plan to align the regulatory provisions for the first phase of NO x tightening with the second implementation stage of the Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles - Phase 2 in 2024. The cost of controlling NO x to 0.05 Credit: MECA.
Green Car Congress
FEBRUARY 5, 2020
CO 2 and NO x certification test data for heavy-duty diesel engines certified from 2002 through 2019. It is important to state that there are several technology paths to achieve these levels of emissions, and some of them can simultaneously lower greenhouse gas emissions, such that the NO x reductions do not compete with the CO 2 reductions.
Green Car Congress
JUNE 16, 2011
Turbocharging and downsizing can also yield fuel consumption reductions. Downsizing is an important strategy applicable in combination with technologies that increase engine torque, such as turbocharging or supercharging. Part of the gain from advanced-level CI diesel engines comes from downsizing.
Green Car Congress
SEPTEMBER 21, 2009
On 15 Sep, NHTSA and the US EPA proposed a joint rulemaking on fuel economy and greenhouse gas emissions for light duty vehicles: an average new car 34.1 The two agencies are continuing with their analysis, and will incorporate the upcoming National Academies update of the 2002 NAS Report, which presents technology effectiveness estimates.
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