Semi trucks are complex machines to say the least. One of the most intricate systems within a semi truck is its aftertreatment system — or diesel exhaust aftertreatment system. This system plays a crucial role, but is also one of the most difficult to care for, because knowing exactly when service is needed can be tricky. Below, you’ll find more exhaust aftertreatment information and maintenance tips from International Used Truck Centers!
The main purpose of the aftertreatment system is to reduce the amount of harmful emissions and pollutants released into the air. Essentially, it’s a system of parts and components that clean the diesel exhaust that’s emitted by your truck before it’s released into the air via the tailpipe. Aftertreatment systems have changed with the standards set by the Environmental Protection Agency (EPA). In recent years, new equipment and systems have been introduced to help trucks meet the EPA’s stringent emissions requirements.
Nowadays, diesel engines include a selective catalytic reduction (SCR), a diesel particulate filter (DPF), a diesel oxidation catalyst, and diesel exhaust fluid (DEF) to thoroughly clean the diesel engine exhaust. Many used Freightliner trucks that house Detroit engines feature aftertreatment systems with a “1-Box” configuration. This setup integrates the above-mentioned components into a single system. This puts less pressure on the engine and reduces the overall weight of the truck for improved fuel economy.
Are you looking for more exhaust aftertreatment system information? Contact us for answers to your questions! The knowledgeable team at International Used Truck Centers can answer any questions you many about DPFs, reducing idling engine fuel consumption, and more. Additionally, you’re also welcome to visit one of our nationwide locations for in-person assistance.