Extended Idling and Aftertreatment System Conditioning

Extended idling performed this vehicle equipped with exhaust aftertreatment system should carried out a low engine idle There benefit using a raised engine idle speed for extended The only exception for active O . Utilizing engine speed above 1300 rpm recommended for vehicles which perform extended idling with active

During periods extended normally greater than 8 the conventional DPF system needs perform a routine conditioning The conditioning cycle controlled the Engine ECU and will start and stop automatically The A conditioning required maintain normal exhaust aftertreatment system function and should not stopped. A conditioning will not occur TRU DPF

During these events the engine speed will increase approximately 1050 a compatible driver display available a message will displayed when the conditioning cycle progress. The message indicated the driver ’ s display will Conditioning Progress, Action Required." driver display available there will indication A conditioning event except for the automatic increase engine speed.

1400 rpm, for non - O , order complete the exhaust aftertreatment conditioning cycle. Exhaust temperatures will also elevate slightly but remain much lower than those reached during regeneration and present danger .

Exhaust Aftertreatment System

CHU Standard System V iew

W2029933

Selective Catalytic Reduction (SCR) Catalyst

Aftertreatment DEF Dosing Unit

Aftertreatment Diesel Particulate Filter (DPF)

4.Aftertreatment DEF T ank

Diesel Exhaust Fluid (DEF) a reactant s key the SCR It’ s a ultra - pure solution urea and ultra - pure water Urea a compound nitrogen that turns ammonia when used a variety perhaps most commonly a fertilizer The fluid non and not dangerous when handled However , highly corrosive certain espically copper and Read the separate section concerning the handling DEF https://www.truck-manuals.net/