Thursday, Mar 22, 2012 at 22:27
6.7 Power Stroke
The 6.7 L is the first medium duty diesel designed and built by Ford. It was designed in conjunction with AVL in Austria.[3] During design, Ford engineers codenamed this engine "Scorpion" due to the turbo being mounted right on top of
the block.[4] It includes a Compacted graphite iron (CGI) block for greater strength while reducing weight, reverse flow aluminum cylinder heads (the exhaust ports are located in the lifter valley) with dual water jackets, six head bolts per cylinder, and 29,000 psi (1,999 bar) a high-pressure common rail Bosch fuel system. The system delivers up to five injection events per cylinder per cycle using eight-hole piezo injectors spraying fuel into the piston bowl. This engine also supports B20 biodiesel (allowing greener fueling options of up to 20 percent biodiesel and 80 percent petroleum diesel). There is also a unique inboard exhaust and outboard intake architecture, an automotive-industry first for a modern production diesel engine. Honeywell’s single-sequential turbocharger features an industry-first double-sided compressor wheel mounted on a single shaft. It combines the benefits of a small turbocharger (faster response) and a large turbocharger (ability to compress and force more air into the engine for more power) in one unit.[5] The connecting rods are made by Mahle.[3]
Emissions controls include exhaust gas recirculation, Denoxtronic based Selective Catalytic Reduction (SCR) solution from Bosch, and a Diesel Particulate Filter (DPF). Output was originally 390 hp (291 kW) and 735 lb·ft (997 N·m).[6] but shortly after production started, Ford announced that they have made an update to the new 6.7L diesel. The new engine control software makes the engine capable of 400 hp (298 kW) @ 2800 rpm and 800 lb·ft (1,085 N·m) @ 1600 rpm while achieving better fuel economy and without any physical changes to the engine. All 6.7L engines already shipped to dealerships or purchased by customers can be upgraded to Fords new specifications with a free software update available at Ford dealerships.[7]
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