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Accessing system for emissions control device ability to store exhaust gas has processor programmed to determine difference between predicted time and actual time to purge the device, and modify parameter used to determine predicted time
Accessing system for emissions control device ability to store exhaust gas has processor programmed to determine difference between predicted time and actual time to purge the device, and modify parameter used to determine predicted time
An accessing system for an emissions control device ability to releasably store constituent of exhaust gas generated by lean-burn operation of an internal combustion engine, includes a processor programmed to determine, during purge phase of the cycle, a difference between predicted time and actual time required to purge the device; and modify the parameter used to determine the predicted time during a storage-purge cycle. An accessing system for the ability of an emissions control device to releasably store constituent of exhaust gas generated by lean-burn operation of an internal combustion engine (12) during each of a series of storage-purge cycles, comprises a processor programmed to determine, during the purge phase of the cycle, a difference between a predicted time required to purge the device with actual time required to purge the device, such predicted time being computed as a function of a parameter of the device, such parameter varying over time; and modify the parameter used to determine the predicted time during a subsequent one of the series of storage-purge cycles. The device stores the quantity of the exhaust gas constituent when the exhaust gas directed through the device is lean of stoichiometry during a storage phase of the cycle and the device releases a previously-stored amount of the exhaust gas constituent when the exhaust gas directed through the device is rich of stoichiometry during a subsequent purge phase of the cycle.
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