More Fuel-Efficient, More Powerful Chrysler Group 4.7-Liter V-8 Engine Debuts in New 2008 Dodge Dakota
07 Février 2007 - 7:30PM
PR Newswire (US)
-- Significant improvement in fuel economy CHICAGO, Feb. 7
/PRNewswire-FirstCall/ -- Chrysler Group's new 4.7-liter V-8 is
engineered to deliver significantly enhanced customer experience
and value, increasing fuel economy while simultaneously improving
performance by 60 horses to 290 horsepower. Peak torque is up over
10 percent, to 320 lb.-ft. These efficiency and performance gains
are not at the expense of refinement, however, as noise, vibration
and harshness have been minimized. "The Chrysler Group continues to
push the boundaries of engine technology, substantially increasing
fuel-efficiency, performance and refinement," said Bob Lee, Vice
President - Powertrain Product Engineering Team, Chrysler Group.
"Chrysler Group knows that while pickup customers always want more
torque and power, fuel economy is becoming more important as fuel
prices trend upward. Like our industry-leading HEMI(R), this new
engine represents a win-win for our customers." The new 4.7-liter
V-8 follows the HEMI(R) lead in using two spark plugs per cylinder,
and leverages increased compression ratio, improved cylinder head
port flow and a new slant/squish combustion system design to
substantially increase fuel economy, power and torque. Refinement
improvements result from careful system engineering, including
significant revisions to the induction system, reduced
reciprocating mass via a lightweight piston/rod assembly, and
reduced accessory drive noise through lower accessory drive speed.
A new normally open valve lash adjuster system enables improvement
in engine smoothness at idle. Additionally, electronic throttle
control smoothes the driving experience. The new 4.7-liter V-8
engine will be manufactured at the Mack Avenue Engine Complex in
Detroit. Dodge Dakota will be manufactured at Warren Truck Assembly
in Warren, Mich. Both will be available this summer. New 4.7-liter
MAGNUM(R), SOHC, 16-Valve SMPI V-8 Type and Description: V-type,
liquid-cooled Displacement: 287 cu. in. (4701 cu. cm) Bore x
Stroke: 3.66 x 3.40 (93.0 x 86.5) Valve System: Chain driven, SOHC,
16 valves, hydraulic end-pivot roller rockers Fuel Injection:
Sequential, multi-port, electronic, returnless Construction:
Compacted Graphite Iron bedplate, cast-iron block, aluminum alloy
heads Compression Ratio: 9.8:1 Max Engine Speed: 6,000 rpm Fuel
Requirement: E85 (Ethanol) or Unleaded regular, 87 octane (R+M)/2
Oil Capacity: 6 qt. (5.7L) Emission Controls: Dual three-way
catalytic converters, heated oxygen sensors, and internal engine
features (a) (a) Meets federal Bin 8A emission standards and
California ULEV standards DATASOURCE: Chrysler Group CONTACT:
Heather May, +1-248-512-0364, or , or Todd Goyer, +1-248-512-0041,
or , both of Chrysler Group Web site:
http://www.media.daimlerchrysler.com/
http://www.daimlerchrysler.com/
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