This is Ford's recently unveiled 2011 Super Duty, which is said to offer the widest array of solutions for the widest array of heavy-duty work truck customers. It delivers significantly improved torque and horsepower as well as class-leading fuel economy while maintaining best-in-class towing and payload capability.
The new model has a fresh look and new engines that consume less fuel while boasting an advanced performance. Ford has yet to provide the output figures however.
Mark Fields, Ford president of The Americas, said that since its Super Duty customers do some of America's toughest jobs, they deserve nothing less than the right tool for the job.
The 2011 Super Duty represents the best-in-class towing and payload and all-new powertrains. In particular, the upgraded range will include a Ford-built 6.7-liter Power Stroke V8 turbocharged diesel engine.
In addition, the series will comprise a 6.2-liter V8 gasoline configuration, tweaked for reduced fuel consumption and emissions as well.
An all-new heavy-duty TorqShift six-speed automatic transmission will be available as well. Chris Brewer, chief engineer, said that the Super Duty lineup offers a variety of body styles and powertrains, from diesel and gasoline engines, each with a new six-speed transmission, to pickup trucks and chassis cabs.
One of the advantages in using the new 6.7-liter Power Stroke V8 turbocharged diesel engine in the 2011 Ford F-Series Super Duty is that the engine block is now stronger and lighter, thus enabling it to meet the rigors of more horsepower and higher torque while boasting a class-leading fuel economy.
This is because the 6.7-liter Power Stroke V8 turbocharged diesel engine uses a compacted graphite iron (CGI) engine block, which is known to be stronger and lighter than cast. Incidentally, the 2011 Ford F-Series Super Duty is the first vehicle in its class to employ a CGI engine block in North America.
Moreover, the new engine features distinct inboard exhaust and outboard intake architecture – the first automotive diesel engine to do so – that lowers the overall exhaust system volume, resulting to better throttle response. A smaller exhaust system surface area helps curtail heat transfer to the engine compartment while improving NVH (noise, vibration and harshness) numbers.
Furthermore, the 6.7-liter Power Stroke V8 turbocharged diesel engine has a dual-sided compressor wheel – the first in the auto industry – working in a single housing and center-mounted on a pedestal low at the back of the valley for enhanced NVH. The design of the dual-sided compressor wheel enables the unit to offer the capabilities of a twin-turbocharger system in a smaller and more efficient package.
This setup marries in one single unit the faster response of a small turbocharger and the ability of a large turbocharger to compress and force more air into the engine for provide more power. Moreover, the 6.7-liter Power Stroke V8 turbocharged diesel engine boasts of a high-pressure fuel system that injects fuel at more than 29,000 psi. This system works by delivering up to five injection events per cylinder per cycle via eight-hole piezo injectors that spray fuel into the piston bowl.
Ford has calibrated and phased this direct-injection system to provide optimum power, fuel efficiency and NVH. The 6.7-liter Power Stroke V8 turbocharged diesel engine also features lighter aluminum cylinder heads as well as a mid-deck construction with dual water jackets that offers more strength and optimal cooling.
Furthermore, the engine comes with six-head bolts, instead of the typical four, which has better sealing and more stable cylinder integrity even with the higher firing pressures. Additionally, the 6.7-liter Power Stroke V8 turbocharged diesel engine is compatible up to B20 fuel, which means that the powerplant could be powered by a fuel mixture of up to 20 percent biodiesel/80 percent petroleum diesel.
The good news is that both the engine and after-treatment system for the 6.7-liter Power Stroke V-8 turbocharged diesel powertrain is already compliant with new and stiffer 2010 federal emissions requirements for nitrogen oxides (NOx). Adam Gryglak, lead 6.7-liter diesel engineering manager, described the development of the new 6.7-liter Power Stroke V-8 turbocharged diesel engine as an awesome endeavor.
He remarked that following engineering and testing, they are confident that the new diesel engine will help ensure that the new Super Duty would be able to retain its lead-position in terms of capability, productivity and reliability.