Kenworth K270, Руководство по культуризму, Страница: 39 / 96

4-1
EXHAUST AND AFTERTREATMENT INFORMATION
The following section is designed to give you information regarding the exhaust and after-treatment systems on Kenworth
chassis. All Kenworth’s equipped with 2013 emission level engines will utilize Selective Catalyst Reduction (SCR). SCR
is a process in which Diesel Exhaust Fluid (DEF) is injected into the exhaust downstream of the engine. DEF is converted
to ammonia by the heat of the exhaust system. Inside of the SCR canister, a catalyst causes a chemical reaction between
the ammonia and NOx, turning it into water and nitrogen. For more information on the specific details of how
SCR works, please contact your local Kenworth dealer.
On most Kenworth chassis, the DEF Supply Module (or pump) is integrated into the DEF tank. Kenworth does not allow
relocation of this pump. The following schematic details how the DEF lines route to the after-treatment system.
Section 4
Exhaust & Aftertreatment