L Power Stroke V8 Turbo Diesel; Turbocharging Basics - Ford 2012 Super Duty Pickups F-250 User Manual

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2012

6.7L Power Stroke V8 Turbo Diesel

• The cleanest Power Stroke diesel engine ever
• Ford-engineered, Ford-tested and Ford-built
• Biodiesel capability up to B20
– Designed to handle a mixture of up to 20 percent
biodiesel by volume and 80 percent petroleum
diesel fuel
– Biodiesel of ASTM D7467 Grade S15 (15 ppm sulfur
maximum) should be used
• Compacted graphite iron (CGI) deep-skirt engine block
and aluminum cylinder heads help reduce weight while
maintaining maximum strength for the horsepower
and torque capacity of the Power Stroke V8
– First North American use of CGI in a
Super Duty-class vehicle
– CGI is stronger than traditional cast iron
• Aluminum cylinder heads
– Help reduce weight
– Feature dual water jackets for optimal cooling and
increased strength
– Six-head-bolt design helps improve sealing and
maintain cylinder integrity
• Unique inboard exhaust design
– An automotive industry first for a modern
production diesel engine
– Helps reduce exhaust system volume and heat
transfer to the engine compartment
– Helps improve throttle response
– Helps improve NVH (Noise, Vibration and
Harshness) characteristics
Turbocharger
A turbocharger (or turbo for
short) uses the engine's exhaust
gases to spin a turbine, which
in turn drives a compressor to
force more air into the engine.
Increasing the airflow allows
more power to be generated.
A turbo consumes very little
power under light loads or easy
engine use and allows smaller
engines to generate the power
of a larger displacement. When
extra power is needed, the turbo
spins into action.
14
F-250/F-350/F-450
Super Duty Pickups
Performance/Handling
Diesel Engine
MAKE THE POINT: Power Stroke Turbocharging Basics
Turbo Lag
This is the time it takes for the
turbocharger to spin after the driver
steps on the accelerator. This delay
can be caused by the turbo having to
wait for the exhaust gas to spin the
turbine and drive the compressor.
Another factor in lag is the size of the
turbo. Bigger turbos make more power,
but take longer to respond. In the past,
the typical solution was to use two
smaller turbos for faster response.
However, this approach added the
cost and complexity of two turbos,
and generated twice the heat.
esourcebook.dealerconnection.com
RE&T: 2012 Source Book
• Single-sequential turbocharger
– Includes an industry-first double-sided compressor
wheel mounted on a single shaft
– Combines the advantages of a twin-turbocharged
system (fast throttle response) and a large
turbocharged system (ability to compress and
force air into the engine for more power) into
one unit
– Provides up to 30 psi of boost
– Features a center-mounted pedestal design
at the rear of the engine to help improve NVH
characteristics and access for service
• High-pressure common-rail fuel injection
– Utilizes piezo injector technology to deliver fuel at
30,000 psi
– Delivers up to 5 fuel injections per combustion
cycle for optimum throttle response, fuel efficiency
and NVH characteristics
– Delivers quiet operation throughout the entire rpm
range (similar to gasoline-engine noise levels)
– Helps the Power Stroke V8 meet the latest diesel
emissions standards
• Instant-start glow plugs help provide quick engine
starts, even in the extremely cold conditions
• Structural oil pan bolts to the engine block and
transmission to help improve powertrain stiffness
• Organic Acid Technology (OAT) orange
engine coolant
• Intelligent Oil Life Monitor
The Innovative
Power Stroke Approach
The 6.7L Power Stroke uses a single-
sequential turbocharger design.
Instead of two separate turbos, a
single-sequential turbo places two
compressors back-to-back on a
common shaft in a single housing.
The Power Stroke Benefit
This design allows the system to
have a response time similar to a
twin-turbo package, while reducing
cost, weight, complexity and
underhood heat.
June 2011

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