System and method for SCR inducement

摘要

A system and method of inducing proper operation of a diesel engine exhaust after-treatment system employing SCR technology monitors components to detect a fault condition representing one of a DEF level fault, a DEF quality fault, and a tampering fault, activates a trigger event indicator in response to detecting the fault condition. The trigger event indicator provides an indicium to an operator of the presence of the fault condition. The system and method also activates an inducement event indicator in response to activating the trigger event indicator. The inducement event indicator provides an indicium to the operator that the engine will be shut down if the fault condition is not addressed within a predetermined time period. The system and method causes shutdown of the engine when the fault condition is not addressed within the predetermined time period.

主权项

1. A method of inducing proper operation of a diesel engine exhaust after-treatment system of a genset employing SCR technology, including the steps of:
monitoring the system to detect a first fault condition representing one of a DEF level fault, a DEF quality fault, and a tampering fault; activating a trigger event indicator in response to detecting the first fault condition, the trigger event indicator providing an indicium to an operator of the presence of the first fault condition; activating an inducement event indicator in response to activating the trigger event indicator, the inducement event indicator providing an indicium to the operator that the engine will be shut down if the first fault condition is not addressed within a first predetermined time period; shutting down the engine when the first fault condition is not addressed within the first predetermined time period; initiating a repeat offense timer which increments through a predetermined repeat offense time period; reactivating the inducement event indicator in response to detecting the first fault condition for a second time during the repeat offense time period, the reactivated inducement event indicator providing an indicium to the operator that the engine will be shut down if the first fault condition is not addressed within a second predetermined time period which is less than the first predetermined time period; and shutting down the engine when the first fault condition is not addressed within the second predetermined time period.