Exhaust Gas Recirculation

{
  "id": "MLC-T-ENV-010322",
  "term": "Exhaust Gas Recirculation",
  "field": "Environment",
  "definition": "1. Emission control technology that reduces emissions by routing exhaust gases that had been exhausted from the combustion chamber(s) back into the engine to be mixed with incoming air prior to or during combustion. The use of valve timing to increase the amount of residual exhaust gas in the combustion chamber(s) that is mixed with incoming air prior to or during combustion is not considered to be exhaust gas recirculation for the purposes of this part.\n\n2. Emission control technology that reduces emissions by routing gases that had been exhausted from the combustion chamber(s) back into the engine to be mixed with incoming air prior to or during combustion. The use of valve timing to increase the amount of residual exhaust gas in the combustion chamber(s) that is mixed with incoming air prior to or during combustion is not considered to be exhaust gas recirculation for the purposes of this part.\n\n3. Technology that reduces emissions by routing exhaust gases that had been exhausted from the combustion chamber(s) back into the engine to be mixed with incoming air before or during combustion. The use of valve timing to increase the amount of residual exhaust gas in the combustion chamber(s) that is mixed with incoming air before or during combustion is not considered exhaust-gas recirculation for the purposes of this part.[40 CFR 1036.801 (CFR 2013)][40 CFR 1039.801 (CFR 2013)][40 CFR 1042.901 (CFR 2013)][40 CFR 1048.801 (CFR 2013)][40 CFR 1051.801 (CFR 2013)][40 CFR 1065.1001 (CFR 2013)] [40 CFR 1045.801 (CFR 2013)][40 CFR 1054.801 (CFR 2013)]",
  "abbreviation": "EGR",
  "references": [
    "40 CFR 89.2 (CFR 2013)",
    "40 CFR 94.2 (CFR 2013)",
    "40 CFR 1033.901 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/exhaust-gas-recirculation/"
}