{
  "$type": "site.standard.document",
  "description": "An emissions control system for treating exhaust gas containing NOemissions from an internal combustion engine comprises a selective catalytic reduction (SCR) device that stores reductant that reacts with the NOemissions, a reductant supply system configured to inject the reductant according to a…",
  "path": "/patents/1236162",
  "publishedAt": "2019-06-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02D41/1463",
    "GM GLOBAL TECHNOLOGY OPERATIONS LLC"
  ],
  "textContent": "An emissions control system for treating exhaust gas containing NOemissions from an internal combustion engine comprises a selective catalytic reduction (SCR) device that stores reductant that reacts with the NOemissions, a reductant supply system configured to inject the reductant according to a reductant storage model; NOmodule(s) configured to generate an NOconcentration signal indicating an NOconcentration, temperature module(s) configured to generate a temperature signal indicating an SCR temperature of the SCR device, and a control module operably connected to the reductant supply system, the NOmodule, and the temperature module. The control module is configured to determine an amount of the reductant that is parasitically oxidized based on the NOconcentration signal and the temperature signal, and to determine a correction factor based on the amount of parasitically oxidized reductant to modify the reductant storage model.",
  "title": "Method For Diagnosing And Controlling Ammonia Oxidation In Selective Catalytic Reduction Devices"
}