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Ford dissects the heart of the 2015 Mustang, its engine range



 
 
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Old January 10th 14, 05:33 AM posted to rec.autos.makers.ford.mustang
MummyChunk
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Default Ford dissects the heart of the 2015 Mustang, its engine range

From AB







HORSEPOWER UNLEASHED – MOTIVATING THE ALL-NEW FORD MUSTANG

5.0-liter V8 anchors the all-new Ford Mustang lineup with power and
torque fit for the iconic brand
New 2.3-liter EcoBoost® brings turbocharging to Mustang with
exceptional power and torque and projected class-leading fuel
efficiency
Manual transmissions provide smoother shifting, automatic
transmissions feature steering-wheel-mounted paddle shifters
The all-new Ford Mustang offers a choice of engines available with
either manual or automatic transmissions that make it a great
all-around performer no matter how you mix and match.

Less is more, EcoBoost comes to Mustang
The new 2.3-liter EcoBoost engine brings turbocharging to the Mustang
powertrain lineup. Designed to meet the needs of drivers looking for
outstanding performance and projected best-in-class fuel efficiency,
this EcoBoost engine has been developed specifically for Mustang. The
intake manifold and turbocharger housing are optimized to provide
better breathing and higher output in Mustang.

With a projected 305-plus horsepower and 300-plus lb.-ft. of torque,
this EcoBoost engine fits the bill for a true Mustang powerplant.

"This EcoBoost engine delivers the healthy output that Mustang
drivers expect regardless of the speed," said Scott Makowksi,
EcoBoost powertrain engineering manager. "This EcoBoost engine
might be small in displacement, but it delivers where a Mustang driver
expects it with a broad, flat torque curve and great driveability
under any conditions."

The newest member of Ford's global family of EcoBoost engines, the
2.3-liter continues to take advantage of state-of-the-art technologies
including direct fuel injection, twin independent variable camshaft
timing and turbocharging to produce big-engine power and torque with
improved fuel efficiency.

This is the first Ford engine to utilize a low-inertia twin-scroll
turbocharger that provides quicker boost response while enabling lower
emissions and improved efficiency. The cylinder head features an
integrated exhaust manifold that separates the inner and outer pairs
of cylinders into each inlet passage to the turbo.

Keeping the exhaust pulses separated from the next cylinder in the
firing order eliminates mixing losses and maximizes pulse energy to
the turbine wheel. The result is quicker torque delivery when the
driver needs it for passing maneuvers and similar performance to a
twin-turbocharger configuration.

The separated exhaust ports also enable the exhaust valves to stay
open longer for reduced pumping losses that improve specific fuel
consumption by about 1 percent.

With more than 305 horsepower and 300 lb.-ft. of torque pumped out
from such a small engine, in a car where drivers are more inclined to
use it, ensuring durability was critical. Enhancements to the Mustang
EcoBoost engine to withstand the added stresses include:

Forged-steel crankshaft
Piston-cooling jets
Steel piston ring carriers
Premium bearing materials
Upgraded valve seat materials
Forged-steel connecting rods
High-pressure die-cast aluminum cylinder block with ladder-frame
bearing caps
Deep-sump, die-cast aluminum oil pan
The beating heart of a pony
No Ford Mustang engine lineup would be complete without a great V8
engine at its core. The 5.0-liter V8 powers into a new generation with
a host of upgrades that enable it to breathe better, especially at
higher engine speeds. Many of these changes are derived from the
lessons learned in developing the special edition 2013 Mustang Boss
302.

Getting air into the cylinders and exhaust out is the key to
generating more power and torque from any engine, and that has been
the focus of development on the V8, which features:

Larger intake valves
Larger exhaust valves
Revised intake camshafts
Revised exhaust camshafts
Stiffer valve springs – ensures that the valves close completely at
high rpm
New cylinder-head casting – revised ports that provide a straighter
path to the valves for less-restrictive intake and exhaust flow;
combustion chamber modifications accommodate larger valves
Sinter forged connecting rods – lighter and more durable for high-rpm
operation
Redesigned piston tops – deeper cutouts clear the new larger valves
Rebalanced forged crankshaft – supports higher-rpm operation
These upgrades are projected to generate more than 420 horsepower and
390 lb.-ft. of torque.

A new intake manifold includes charge motion control valves to
partially close off port flow at lower engine speeds. This increases
the air charge tumble and swirl for improved air-fuel mixing. This
results in better fuel economy, idle stability and lower emissions.

The variable camshaft timing on the intake side now has a greater
range of adjustment available thanks to mid-lock phasers. This enables
better optimized control of the valve timing over a broader range of
engine speeds and loads for improved fuel economy and emissions

Transmissions
More than most drivers, Mustang owners like to take control and shift
for themselves. Whether they select a fully manual gearbox or the
updated automatic transmission, the experience will be better than in
any previous pony.

The Getrag manual has a new shift linkage design for shorter throws
and improved precision. The shift lever is now positioned closer to
the driver and away from the cup-holders so the driver has a clear
path for shifting.

Mustang blends outstanding all-around performance and everyday
usability. Drivers who prefer to let the car handle the shifting
during their daily work run, but still want to take control when the
roads get twisty, will appreciate the new steering-wheel-mounted shift
paddles with rev-matching downshifts that are now standard with the
Select-Shift six-speed automatic transmission.

The automatic also features a redesigned case with cast-in ribs that
help make it stiffer and reduce the weight. Internally clutches have
been optimized and operating temperature has been increased to reduce
friction. The output shaft is now supported by a ball-bearing that
enables a top speed of 155 mph for Mustang GT.

With a choice of powertrains to match driving styles and lifestyles,
the new Mustang has contemporary technology under the hood to match
its modern design and remain quintessentially Mustang.

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