Aftertreatment System Indicators Label
Model year 2007 and later diesel engines in vehicles domiciled in the U.S. or Canada are required to meet all EPA exhaust gas emission regulations effective as per the applicable emission model year, and are equipped with an emission aftertreatment system (ATS).
Vehicles domiciled outside of the U.S. and Canada may not have aftertreatment equipment, depending upon local statutory emissions guidelines. See Table. and Table. at the end of this chapter for additional information on what EPA and GHG regulations apply to different model years. See Fig..for information on the driver’s visor warning label for important warning indicators in the instrument cluster that pertain to the ATS.
Fig. 1, ATS Indicators, EPA10 and Newer
It is a violation of U.S. federal law to alter exhaust plumbing, ATS, or other components in any way that would bring the engine/vehicle out of compliance with certification requirements [Ref: 42 U.S.C. S7522(a) (3)]. It is the owner’s responsibility to maintain the vehicle so that it conforms to EPA regulations.
Table 1, EPA Regulations
|
EPA Regulations |
|
|
Regulation |
Emissions Components |
|
EPA10 (Reduction of NOx emissions to 0.2 g/bhp-hr) |
EPA07-type ATD, with additional selective catalyst reduction (SCR) technology that utilizes diesel exhaust fluid (DEF) to convert NOx to nitrogen and water vapor. |
|
GHG17 |
Fuel efficiency components including, but not limited to, engines, tires, aerodynamic components, vehicle speed limiters, and idle reduction timers specifically designed to meet regulatory fuel efficiency and greenhouse gas emissions standards. |
|
GHG21 |
GHG14/17 components plus additional components including, but not limited to, transmissions, axles, predictive technologies, idle reduction technologies for vocational vehicles, tire pressure monitoring systems. |
Table 1, EPA Regulations
Table 2, Emission Regulations by Model Year
|
Emission Regulations by Model Year |
||
|
Model Year |
Engine Regulation |
GHG Regulation |
|
2017–2020 |
EPA10, GHG17 |
GHG17 |
|
2021–and later |
EPA10, GHG21 |
GHG21 |