What is the after treatment?
Definition of aftertreatment : a secondary treatment to which a material (as film or dyed goods) is subjected after the primary treatment is finished.
What is after treatment regeneration?
The DOC is designed to convert the carbon monoxide and hydrocarbons into carbon dioxide and water. After the exhaust passes through the DPF, diesel exhaust fluid (DEF) is injected into the system. During the regeneration process, the soot and ash captured in the DPF is converted to a much smaller amount of ash.
What is exhaust gas treatment?
Exhaust gas treatment systems for NOX , known as NOX-reducing devices, provide the flexibility to operate ships constructed after 1 January, 2016 inside Emission Control Areas designated to control NOX emissions (ECA-NOX).
What is after treatment control module?
The control unit has been designed for exhaust gas aftertreatment applications (Selective Catalytic Reduction – SCR, Diesel Particulate Filter – DPF) on truck engines for low emissions according to Euro IV, V and VI.
What are the elements in exhaust after treatment system?
The exhaust aftertreatment system consists of five different components: A Diesel Oxidation Catalyst (DOC), a Diesel Particulate Filter (DPF), Urea (AdBlue™) injection, a Selective Catalyst Reduction (SCR) catalyst and an Ammonia Slip Catalyst (ASC).
What is DOC and DPF?
The exhaust aftertreatment devices that are applied to vehicles are Diesel Oxidation Catalysts (DOC), Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) catalysts. …
What comes out of a car exhaust?
All exhaust systems produce six gases as emissions, three of which are toxic, including carbon monoxide, nitrogen oxide, and nitrogen monoxide. While the main task of the exhaust system is to dissipate harmful gases produced by the engine’s combustion chamber, it is also tasked with muffling the sound.
What is released from exhaust fumes?
The majority of vehicle exhaust emissions are composed of carbon dioxide, nitrogen, water vapor, and oxygen in unconsumed air. Carbon monoxide, unburned fuel, nitrogen oxides, and particulate matter such as mercury are also present in vehicle exhaust emissions in smaller quantities.
Can SCR be cleaned?
SCR catalyst systems need to be cleaned to remove contaminants and plugs. If the catalyst is not kept clean and the ammonia injection system is not tuned, ammonia slip occurs.
How do you force a parked regeneration?
Make sure your engine jake brake switch is off, cruise control turned off, ensure your parking brake set, and truck is in neutral. Hold down the regen button and keep holding the button down for at least 10 seconds. The engine RPM’s will start to increase from IDLE to a higher RPM.