SOOT MONITORING METHOD AND ALERT SYSTEM

摘要

A system and method of monitoring regeneration of a particulate matter filter for a stationary diesel engine is disclosed. The system monitors exhaust temperature and operating time of an engine to calculate accumulated operating time below a critical temperature. Upon reaching a maximum allowed accumulated operation time, the system initiates a warning signal to inform the operator to increase exhaust temperatures for passive regeneration of the filter. During regeneration, the system periodically measures filter pressure differential and the exhaust temperature to calculate a difference in pressure differentials measured at two different times and determine whether the difference is below a critical value to inform the operator that regeneration is complete.

主权项

1. A method of monitoring regeneration of a particulate matter filter for a diesel engine, the method comprising:
(a) measuring exhaust temperature proximal to the particulate matter filter and operating time of an engine to calculate a first accumulated operating time during which the exhaust temperature is below a critical temperature; (b) initiating a warning signal when the first accumulated operating time is greater than or equal to a first period; (c) repeatedly measuring the exhaust temperature proximal to the particulate matter filter, a first filter pressure differential at a first time, and a second filter pressure differential at a second time, wherein the second time is equal to the first time plus an interval; (d) calculating an accumulated regeneration period, wherein the accumulated regeneration period is total instances when the exhaust temperature is greater than or equal to a regeneration temperature and the difference between the first and second filter pressure differentials is less than or equal to a critical value; and (e) generating a completion signal when either
i. the accumulated regeneration period is greater than or equal to a completion value, orii. the number of exhaust temperature measurements measured during step (c) which meet or exceed the regeneration temperature is greater than or equal to a shutdown value.