Journal Article
Strategies for Meeting Phase 2 GHG and Ultra-Low NOx Emission Standards for Heavy-Duty Diesel Engines
2018-04-03
2018-01-1429
When considered along with Phase 2 Greenhouse Gas (GHG) requirements, the proposed Air Resource Board (ARB) nitrogen oxide (NOx) emission limit of 0.02 g/bhp-hr will be very challenging to achieve as the trade-off between fuel consumption and NOx emissions is not favorable. ...Each of these engine models met the 2027 Phase 2 GHG emission standards but used a different combination of technologies, including downsizing, downspeeding, variable compression ratio (VCR), cylinder deactivation, and turbocompounding. ...The results show that with appropriate selection of engine and aftertreatment technology packages, the 2027 Phase 2 GHG emission standards and the proposed 2024 ultra-low NOx emission standards can be achieved simultaneously.
