| 摘要 |
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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