Green Car Congress
FEBRUARY 5, 2020
CO 2 and NO x certification test data for heavy-duty diesel engines certified from 2002 through 2019. Manufacturers continue to optimize diesel emission controls, such as DOC, DPF and SCR, in order to promote uniform catalyst coating, improve NO x conversion efficiency, reduce back pressure on the engine, and reduce thermal mass.
Green Car Congress
JUNE 11, 2019
These same technologies will deliver low temperature NOx conversion in the real world as part of the newly proposed moving average windows-based compliance program. CO 2 and NO x certification test data for heavy-duty diesel engines certified from 2002 through 2019. The cost of controlling NO x to 0.05 g/bhp-hr in 2024 and to 0.02
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. NHTSA also asked that the NRC add to its assessment technologies that have emerged since that report was prepared.
Tony Karrer Delicious EVdriven
JANUARY 28, 2009
See also our EAA-PHEV:General disclaimer talk : Disclaimer edit Please visit the Conversion Interest page to help us gauge DIYers interest! Current Hybrids are natural donor platforms because they already have most of the needed electric propulsion components, so the conversion process deals primarily with integrating larger battery packs.A
Green Car Congress
SEPTEMBER 21, 2009
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. Turbocharging and downsizing: 26% for cars, 15% for trucks. This reduces pumping losses at lighter loads in comparison to a larger engine.
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