GEAR (101 TEETH) 4D3176 - Caterpillar

When DPF soot load percent reaches 116%, the application will use the timer from Core Engine. When the timer reaches the high soot load idle down time (compile-time config: default 5 minutes), the engine will limit engine speed to a compile time configurable parameter or low idle.After a certain period, if no action is taken to regenerate an action alarm will activate. After 5 minutes with the action alarm active, the engine will automatically be taken to low idle. A manual regeneration is required at this time. A complete regeneration will unlock the forced low idle speed. Cycling the engine start switch key will unlock the forced low idle speed. When DPF soot load percent reaches 116% plus 10 mins, Core Engine will activate the Particulate Trap Active Regeneration Inhibited Due to Temporary System Lockout event E992-3 or SAE 3714-31. If the application is configured to do Hard Shutdown on Temporary System Lockout event, when the Temporary System Lockout event becomes active E992-3 or SAE 3714-31, a SINGLE HARD SHUTDOWN of the engine should be initiated, if the machine is NOT Working.If an operator is present and restarts the machine, the existing lights and derate strategies apply. At the point of restart the operator will have a DPF Lamp, Check Engine Lamp, Audible Alarm, and a 100% Engine Derate. If the operator chooses to continue operation and not troubleshoot the system, he will eventually reach 140% soot loading at which point the below rolling shutdown strategy will be invoked. If the application is configured not to do Hard Shutdown, when the Temporary System Lockout event becomes active E992-3 or SAE 3714-31, depending on the service tool configuration on "High Soot Load Aftertreatment Protection Shutdown Configuration" following actions will take place.If High Soot Load Aftertreatment Protection Shutdown Configuration is configured to Temporary System Lockout,invoke the below rolling shutdown strategy with the event E992-3 or SAE 3714-31.If High Soot Load Aftertreatment Protection Shutdown Configuration is configured to Permanent System Lockout invoke the below rolling shutdown strategy ONLY with the event E991-3 or SAE 3715-31 otherwise, continue the idle down strategy and allow for service tool regen.Once the engine has been in the forced low idle strategy for approximately 10 minutes, regeneration will be locked out. At this time, a regeneration can only be done through Caterpillar Electronic Technician (ET), by an authorized Cat dealer.Rolling Shutdown Strategy
When DPF soot load percent reaches 140%, Core Engine will activate the ARD Permanent Disable event E991-3. When ARD Permanent Disable event becomes active, engine speed will be limited to low idle for the high soot load time (compile-time config: default 30 seconds) prior to the engine shutting down. The engine will be allowed to restart indefinitely for the high soot load time until the DPF is replaced and the event is cleared. Engine speed will be limited to the high soot load speed limit (compile-time config: default 1500 rpm) during the restarts to encourage the operator to have the machine/engine serviced. The initial idle