1. Diesel Oxidation Catalyst (DOC)
2. Selective Catalytic Reduction (SCR) where Diesel Exhaust Fluid (DEF) is added
3. Diesel Particulate Filter (DPF)
The SCR is where most of the NOx is removed. That is accomplished by injecting DEF into the exhaust stream that, through a series of chemical reactions, converts NOx into water and harmless nitrogen. Gresham Ford Super Duty Trucks also come standard with Notrogen filled tires to help maximize your gas mileage and tire life.
Diesel Exhaust Fluid (DEF) - DEF is a solution of approximately 32.5 percent high-purity urea and 67.5 percent demineralized water that is injected into the exhaust system, removing most of the NOx from the exhaust. The solution is clear, nontoxic and safe to handle. DEF is readily available from the dealership, truck stops and automotive retail chains.
F-450 Lariat Crew Cab 4x4
F-350 xlt superCab 4x4
F-250 xl reg ular Cab 4x2
• Best-in-Class(1) Fuel Economy
• Best-in-Class Maximum Horsepower and Torque(2) —
400/800
• Best-in-Class Conventional Towing(3) — 17,500 lbs.
• Best-in-Class Maximum 5th-wheel Towing(3) — 24,400 lbs.
• Best-in-Class(1) GCWR — 33,000 lbs. Cleanest Power Stroke® Diesel Engine Ever
The new 6.7L Power Stroke V8 turbo diesel delivers power, fuel efficiency and reduced nitrogen oxides (NOx). An Exhaust Gas Recirculation (EGR) and an aftertreatment system work together to make this the cleanest Ford Power Stroke diesel ever.
Aftertreatment System Exhaust flows through a three-stage aftertreatment system consisting of:
1. Diesel Oxidation Catalyst (DOC)
2. Selective Catalytic Reduction (SCR) where Diesel Exhaust Fluid (DEF) is added
3. Diesel Particulate Filter (DPF)
The SCR is where most of the NOx is removed. That is accomplished by injecting DEF into the exhaust stream that, through a series of chemical reactions, converts NOx into water and harmless nitrogen.
Diesel Exhaust Fluid (DEF) - DEF is a solution of approximately 32.5 percent high-purity urea and 67.5 percent demineralized water that is injected into the exhaust system, removing most of the NOx from the exhaust. The solution is clear, nontoxic and safe to handle. DEF is readily available from the dealership, truck stops and automotive retail chains. Mike Amato, Parts Manager, at Gresham Ford can be reached at 503-665-0101 or parts@greshamford.com and would be happy to answer any of your DEF questions. Chevy Silverado and Ram Chassis Cab also use an SCR/DEF system to meet emission standards. However, Ram Pickup uses a less efficient, Lean NOx Trap (LNT) system.
You need to know that the Ram Pickup does not use DEF, and their Lean NOx Trap system has to constantly cycle between a lean and a rich fuel mix, which reduces Ram’s potential fuel efficiency.
The SCR allows our engine to continually run at the optimum fuel mixture — helping to deliver a 5-8 percent fuel efficiency increase over non-SCR competition.
Also, compared to GM, note that our DEF fill port is conveniently located next to the fuel filler, compared to the less-convenient underhood fill location on Silverado.
Bottom Line - Being able to design a new engine with an SCR/DEF system contributed to Ford engineers’ ability to develop a clean diesel engine that outperforms the competition both in power and fuel efficiency.
Does it cost more to operate a 2011 Super Duty because it requires DEF?
The primary advantage of having SCR/DEF on the 6.7L Power Stroke is the 5-8 percent increase in fuel efficiency. This gives Super Duty a significant leg up before factoring in any other variables. Here’s a quick look at operating costs and savings of SCR/DEF:
Assumptions:
• 15,000 miles of driving per year
• DEF is $3-$5 per gallon
• Customer will use approximately 5 gallons of DEF every 7500 miles
• Customer will see a 5-8 percent advantage in fuel efficiency with Super Duty
Tota l Cost /Savings :
• 2 DEF refills = $30-$50
• Fuel savings 5-8 percent
(@ $3 per gallon of fuel) = $142-$222
Total savings = $92 to $192
