Dodge Introduces Cleaner, Quieter and More Powerful 6.7-liter Cummins Turbo-Diesel Engine at State Fair of Texas
28 Septembre 2006 - 6:11PM
PR Newswire (US)
Engine available in January on new 2007 Dodge Ram 2500/3500 models
DALLAS, Sept. 28 /PRNewswire-FirstCall/ -- The war among America's
diesel- powered pickup trucks rumbles into a new round with Dodge
announcing more horsepower, torque, refinement and a host of
advanced towing features. Today at the State Fair of Texas, Dodge
will reveal more details about the 2007 Dodge Ram Heavy Duty's new
6.7-liter Cummins turbo-diesel engine, which replaces the current
5.9-liter engine. Producing 350 horsepower at 3,000 rpm and 650
lb.-ft. of torque at 1,500 rpm, the 6.7-liter engine features an
all-new six-speed automatic transmission that delivers improved
fuel economy and performance. The engine will be available in 2007
Dodge Ram 2500 and 3500 models beginning January 2007. A
commercial-use 6.7-liter Cummins turbo-diesel engine was introduced
in early 2006 with the all-new Dodge Ram Chassis Cab, which is
available now. "The 2007 Dodge Ram Heavy Duty's new 6.7-liter
Cummins turbo-diesel engine sets the performance standard with an
outstanding combination of horsepower, torque, refinement and
emissions-reducing technology," said Scott Kunselman, Chief
Engineer - Dodge Ram. "Providing superior trailer towing,
acceleration, throttle response and drivability, the new 6.7-liter
engine is not only more powerful, it's also cleaner with B5
biodiesel compatibility and a reduction in particulates and
nitrogen oxide (NOx) that comply with the 50-state 2007 heavy-duty
emission standards." Based on the proven DNA of the 5.9-liter
Cummins turbo-diesel engine, the new 6.7-liter engine is 50-percent
quieter, while featuring a 107mm bore by 124mm stroke (versus 102mm
bore by 120mm stroke for the 5.9-liter engine). The new engine
retains more than 40 percent of its components from the 5.9- liter
engine and shares more than 80 percent of its components with the
new Dodge Ram chassis cab. The high-performance 408-cubic-inch
inline-six intercooled turbo-diesel is clean and quiet, and meets
all 2007 U.S. federal and state emission requirements, which
require a 90-percent reduction in particulate matter and 50-percent
reduction in NOx. Offered for the first time in Dodge Ram Heavy
Duty trucks are features including an integrated exhaust brake,
standard Electronic Range Select (ERS) and "Smart" tow/haul
controls that provide customers flexibility and increased safety
when towing heavy loads. Improved Performance, Durability and
Emissions Dodge Ram Heavy Duty's new 6.7-liter turbo-diesel engine
features improved performance, durability and significantly reduced
emissions. Enhancing diesel-powered performance of 2007 Dodge Ram
Heavy Duty trucks is an electronically-controlled Variable Geometry
Turbocharger (VGT), which precisely matches boost pressure with the
engine's needs. The 6.7-liter engine's VGT utilizes 16 fixed vanes
and a sliding yoke, providing variable geometry, as well as an
electric valve. The VGT produces optimum combustion control,
reduced emissions and a quiet and lag-free throttle response.
Decreasing NOx emissions is a next-generation cooled Exhaust Gas
Recirculation (EGR) system. The Cummins 6.7-liter engine's EGR
system is water cooled, with the air reintroduced into the intake
system, keeping turbo and intercooler components clean, which
increases the engine's durability. Within the 6.7-liter Dodge Ram
Heavy Duty exhaust system, reducing particulate matter is achieved
through a self-cleaning Diesel Particulate Filter (DPF). The
muffler is isolated from the emissions control system, therefore
customers may remove the muffler without violating emissions
compliance. The emissions system is designed for a
government-certified 120,000 miles. As durable as it is powerful,
the Cummins 6.7-liter turbo-diesel engine has life-to-major
overhaul intervals of 350,000 miles, providing more than a
100,000-mile advantage over the competition. Quiet and Refined
Driving Experience In addition to improving emissions and
durability, occupant comfort is central to the 2007 Dodge Ram Heavy
Duty. The new 6.7-liter turbo-diesel engine incorporates several
new features that contribute to a 50-percent quieter engine and a 3
Dba reduction in cabin sound levels, increasing the vehicle's
overall refinement. New engine mounts, a constrained-layered oil
pan, intake silencer and engine-block shield create a quiet cabin
environment inside the 2007 Dodge Ram Heavy Duty. In addition, an
over-running alternator pulley eliminates sounds generated from the
diesel engine shut down process, and machined crankshaft counter
weights significantly contribute to quiet acceleration. First-ever
Optional Exhaust Brake For the first time in a Dodge Ram Heavy Duty
truck, an integrated exhaust brake is available direct from the
factory. Utilizing the 6.7-liter Cummins turbo-diesel engine's new
turbocharger, the exhaust brake significantly improves control when
towing heavy applications, such as pulling RV fifth wheels and
horse trailers, providing added control and brake savings by
transforming horsepower into braking power. "Towing and hauling
capability is critical for our customers, as more than 90 percent
of Dodge Ram Heavy Duty customers tow with their truck," said
Kunselman. Benefits of the exhaust brake include: * Increased
vehicle control to provide the owner additional peace of mind when
towing * Enhanced safety by reducing overheating and fading of
brakes on downhill grades * Lower cost of ownership, extending
brake life by as much as three times * Capability for faster
cold-weather cab warming The 2007 Dodge Ram Heavy Duty's 6.7-liter
Cummins turbo-diesel engine's VGT is capable of creating the
maximum exhaust restriction through a wide range of operating
speeds, improving braking performance at low and high engine
speeds. Testing has shown more than a 30 percent improvement in
retarding torque at 2000 rpm compared with traditional brake
exhaust methods. Six-speed Automatic Transmission with Electronic
Range Select (ERS) Mated to the 6.7-liter Cummins turbo-diesel
engine is a new six-speed 68RFE automatic transmission, which
delivers optimum fuel economy and performance. A new Electronic
Range Select (ERS) system is integrated with the transmission,
enabling customers to select desired gears that match driving
conditions. The new six-speed automatic transmission features a
best-in-class gear ratio spread of 5.16:1, allowing for superior
launch capability. The sixth gear, also known as the second
overdrive gear, provides an extremely low rpm at highway speeds,
improving Dodge Ram Heavy Duty's fuel economy and passenger
comfort. In addition, an added compounder and two clutches provide
optimal shift quality, improved quietness and durability. The
transmission's new ERS system complements the 2007 Dodge Ram Heavy
Duty's tow/haul mode, allowing for driver-actuated gear selection
with a shifter-mounted switch. ERS provides greater control in
unique driving conditions, such as towing heavy loads on severe
inclines. The system includes electronic safeguards to prevent
shifting that could cause engine damage. Towing/Hauling In addition
to more horsepower and torque, Dodge Ram Heavy Duty boasts towing
capability of 16,400 lbs., a payload of 5,020 lbs. and Gross
Combined Weight Rating (GCWR) and Gross Vehicle Weight Rating
(GVWR) of 23,000 lbs. and 12,200 lbs., respectively. The 2007 Dodge
Ram Heavy Duty provides a combination of standard and optional
features that make towing easier, such as a Class IV hitch receiver
with a seven-circuit wiring harness, 750-amp battery, heavy-duty
engine cooling and an auxiliary transmission oil cooler.
Distinctive trailer-tow mirrors featured on Dodge Ram Heavy Duty
trucks offer a large rear-viewing area that may be customized to
drivers' needs and preferences. Mirrors provide two views on both
sides: close-up and wide-out. In addition, mirrors flip up 90
degrees for viewing beyond wide trailers. Chrysler Group
Diesel-Powered Models In the United States, current diesel-powered
models include the Dodge Ram Heavy Duty, Dodge Sprinter and the new
3.0-liter V6 diesel Jeep Grand Cherokee, which hits the market in
early 2007. In 1988, the Chrysler Group made a significant impact
with the introduction of the Cummins 5.9-liter I-6 in heavy duty
applications. Customer recognition is still exceptional and will
continue with the new Cummins 6.7-liter turbo diesel. In Europe,
diesel-powered models account for more than half of Chrysler Group
sales. The Chrysler 300C, Chrysler PT Cruiser and Dodge Caravan
models continue to be popular. Advanced diesel technology is part
of the Chrysler Group's advanced propulsion technology umbrella,
which also includes efficient gasoline engines, hybrids, flex-fuel
vehicles and biodiesel capability. Dodge Brand With a U.S. market
share of 7 percent, Dodge is the Chrysler Group's best- selling
brand and the fifth largest nameplate in the U.S. automotive
market. In 2005, Dodge sold more than 1.4 million vehicles in the
global market. Dodge continues to lead the minivan market with a 19
percent market share in the U.S. In the highly competitive truck
market, Dodge has a 16 percent market share. This year, Dodge
enters key European volume segments. Cummins Cummins Inc., a global
power leader, is a corporation of complementary business units that
design, manufacture, distribute and service engines and related
technologies, including fuel systems, controls, air handling,
filtration, emission solutions, and electrical power generation
systems. Headquartered in Columbus, Indiana, Cummins serves
customers in more than 160 countries through its network of 550
company-owned and independent distributor facilities and more than
5,000 dealer locations. Cummins produces the diesel for the Dodge
Ram 2500 and 3500 series. 2007 Dodge Ram Heavy Duty Cummins
6.7-liter Turbo-diesel Engine Details Engine 6.7L 107mm bore x
124mm stroke High swirl (2.4 DCS) combustion system 17.2:1
Compression ratio Machined crankshaft counter weights Viscous
vibration damper Air Handling VGT - sliding nozzle (16 vane to
eliminate turbine blade pass whistle) Cooled EGR with cold-side EGR
valve Air inlet throttle EGR cooler bypass CCV with coalescing
filter Oil system Tested with low ash oil API CJ4 (PC10) Drain
interval - 7500 miles Total capacity - 13 qts on initial fill Sump
capacity - 9 qts low, 11 qts high Typical oil change capacity - 12
qts Dump to sump to provide oil pressure quicker Constrained layer
oil pan to reduce transmitted noise Fuel system Bosch 3rd
generation common rail system 7 micron spin on filter Tested with
ultra low sulfur fuel - 15 ppm Approved for bio-diesel fuel Cooling
system Molded composite impeller for improved coolant flow
Electronics CM2100 ECM Double the CPU processing speed (40 to 80
MHz) 40% increase in memory NVH Constrained layer oil pan Over
running alternator pulley (eliminate shut down squeal) Intake
silencer Machined crankshaft counter weights Combustion system
(multi injection events) Block shields Pulleys modified to reduce
'speaker' effect Stuffer between transmission adapter and pan
Viscous vibration damper Specifications ENGINE: 6.7-LITER HIGH
OUTPUT CUMMINS TURBO DIESEL I-6 Availability ---- Opt. - 2500,
3500; available Jan. 1, 2007 Type and Description ----
Six-cylinder, inline, liquid-cooled, turbocharged, intercooled
Displacement ---- 408 cu. in. (6690 cu. cm) Bore x Stroke ---- 4.21
x 4.88 (107 x 124) Valve System ---- OHV, 24 valves, solid lifters
Fuel Injection ---- Electronic high-pressure common rail
Construction ---- Cast-iron block and head Compression Ratio ----
17.3:1 Power (SAE net) ---- 350 bhp (261 kW) @ 3,000 rpm Torque
(SAE net) ---- 650 lb.-ft. (881 N*m) @ 1,500 rpm w/6-spd.
automatic; 610 lb.-ft. (827 N*m) @1,400 rpm w/6-spd. manual Maximum
High-idle Engine Speed ---- 3,500 rpm Fuel Requirement ---- Ultra
Low Sulfur Diesel Oil Capacity ---- 12 qt. (11.3L) with filter
Coolant Capacity ---- 29.5 qt. (28.0L) Emission Controls ----
Exhaust after-treatment systems and internal engine features
TRANSMISSION: 68RFE ORION-AUTOMATIC, SIX-SPEED Availability ----
Opt. with 6.7L turbo diesel engine; available Jan. 1, 2007
Description ---- Three planetary gear sets, one overrunning clutch,
full electronic control, electronically controlled converter clutch
Gear Ratios 1st ---- 3.231 2nd ---- 1.837 3rd ---- 1.410 4th ----
1.0 5th ---- 0.816 6th ---- 0.625 Reverse ---- 4.444 Overall Top
Gear Ratio ---- 2.33 with 3.73 axle ratio; 2.56 with 4.10 axle
ratio DATASOURCE: Chrysler Group CONTACT: Colin McBean,
+1-248-202-8047, or Bryan Zvibleman, +1-248-761-9829, both of
Chrysler Group Web site: http://www.media.daimlerchrysler.com/
http://www.daimlerchrysler.com/
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