Composite nitrogen oxides standard

{
  "id": "MLC-T-ENV-005960",
  "term": "Composite nitrogen oxides standard",
  "field": "Environment",
  "term_source": "Composite Nitrogen Oxides Standard",
  "definition": "For a manufacturer which elects to average lightduty trucks subject to the NOX standard of §86.088-9(a)(iii)(A) together with those subject to the NOX standard of §86.088-9(a)(iii)(B) in the light-duty truck NOX averaging program, means that standard calculated according to the following equation and rounded to the nearest one-tenth gram per mile: PROD STD PROD STD PROD PROD AA BB A B [ ] ( )( ) + ( )( ) [ ] ( ) + ( ) = Manufacturer' s Composite NO Standard, x Where: PRODA = The manufacturer’s total lightduty truck production for those engine families subject to the standard of §86.088-9(a)(iii)(A) and included in the average for a given model year, STDA = The NOX standard of §86.088 - 9(a)(iii)(A), PRODB = The manufacturer’s total lightduty truck production for those engine families subject to the standard of §86.088-9(a)(iii)(B) and included in the average for a given model year, and STDB = The NOX standard of §86.088 - 9(a)(iii)(B). Critical emission-related components are those components which are designed primarily for emission control, or whose failure may result in a significant increase in emissions accompanied by no significant impairment (or perhaps even an improvement) in performance, driveability, and/or fuel economy as determined by the Administrator. Critical emission-related maintenance means that maintenance to be performed on critical emission-related components. Emission-related maintenance means that maintenance which does substantially affect emissions or which is likely to affect the emissions deterioration of the vehicle or engine during normal in-use operation, even if the maintenance is performed at some time other than that which is recommended. Family NOX emission limit means the NOX emission level to which an engine family is certified in the light-duty truck NOX averaging program, expressed to one-tenth of a gram per mile accuracy. Non-emission-related maintenance means that maintenance which does not substantially affect emissions and whi",
  "subject": "Regulatory activities",
  "references": [
    "EPA EV-Regulatory Activities-Enforcement and Compliance"
  ],
  "url": "https://mlchart.com/terminology/environment/composite-nitrogen-oxides-standard/"
}