2.8L L4 Duramax® Turbo Diesel

2.8L L4 Duramax® Turbo Diesel
ENGINE CONTENT
Displacement (cu. in. / cc):
Bore & stroke (in. / mm):
Valve configuration:
Ignition system:
Fuel:
Compression ratio:
Horsepower (hp / kW @ rpm):
Torque (lb.-ft. / Nm @ rpm):
Emission controls:
Emissions standard:
MATERIALS
Block:
Cylinder head:
Intake manifold:
Exhaust manifold:
Crankshaft:
Camshaft:
Connecting rods:
169 / 2776
37.0 / 94 x 39.4 / 100
Dual overhead camshafts
Direct injection common rail
Diesel / B20 diesel compatible
16.5:1
181 / 135 @ 3400 (estimate)
369 / 500 @ 2000 (estimate)
Close-coupled diesel oxidation catalyst
Selective catalytic reduction with urea injection
Diesel particulate filter
Positive crankcase ventilation
Cooled Exhaust Gas Recirculation
Tier 2 BIN 5 / ULEV 125
Grey cast-iron
Aluminum
Composite
Cast-iron
Forged steel
Powdered Metal / sintered steel lobes
Forged steel
ENGINE CONTENT
Additional features:
Composite cam cover
Poly-V accessory drive belt
29,000 PSI solenoid fuel injectors
Water-cooled turbocharger with variable-geometry nozzle
Oil level protection switch
Ceramic glow plugs
EGR cooling system with integrated bypass
GM Engineered Controls hardware and software
Oil filter housing with integrated oil cooler
Dexos™ 2 engine oil
Enhanced NVH acoustic package
Pressure-regulating valve for active return fuel heating
Air mass controlled in closed loop via electronic throttle valve
Engine-mounted electro-viscous cooling fan
Balance shaft unit with integrated oil pump
Positive crankcase ventilation heater
Block-mounted 110V coolant heater
High-performance/low-temperature timing belt
TECHNOLOGY SET
• 29,000 PSI (200 MPa) common rail diesel fuel-injection system
• Water-cooled variable geometry turbocharger with integrated exhaust braking capabilities
• Engine mounted electro-viscous cooling fan
• B20 biodiesel compatible
• Longitudinally central Balance Shaft with integrated oil pump
• Ceramic Glow Plugs
• GM engineered engine control unit, hardware, software, and calibration
TURBO EXHAUST BRAKING
• Turbine vanes are utilized to generate significant exhaust system backpressure
• Combined with transmission grade braking, it allows for virtually effortless downhill
driving and towing, with seamless and quiet operation
• Rather than relying on the vehicle’s brakes to slow the vehicle down or maintain a safe
speed, the exhaust brake system does it for you
• Turbine control to automatically adjust for grade and vehicle load
CLEAN DIESEL
• Cleanest diesel truck engine ever produced; over 20% cleaner * than the Ram EcoDiesel truck
• It meets some of the toughest U.S. emission standards with proven diesel exhaust aftertreatment processes
− Cooled EGR and SCR for NOx reduction, close-coupled DOC for hydrocarbon control, dedicated fuel injector with combined
DOC-DPF for efficient soot filtering/burning
• B20 biodiesel compatible for reduced dependence on petroleum
Engine
Compartment
DOC
D
O
C
SCR
Urea Inj
HC Inj
CDPF
* Estimated, certification pending (Nox + NMHC)
Exhaust Cooler
TRUE TRUCK ENGINE DURABILITY
• Built specifically for trucks, the 2.8L Duramax has successfully withstood the same grueling validation
tests as the legendary 6.6L heavy-duty Duramax
• Over 35,000 dynamometer hours logged for development, fatigue testing, and thermal cycling
• Used internationally for years, the 2.8L Duramax is known for its outstanding quality, reliability, and
durability
• Featuring a Forged Steel Crankshaft w/fillet rolled radii, Forged Steel Connecting Rods, cast iron Engine
Block, cast iron Balance Shaft housing, piston-cooled Oil Jets, and a water-cooled Variable Geometry
Turbocharger
EXTREME WEATHER/ENVIRONMENTAL ROBUSTNESS
• Engine robustness to handle the most extreme North American environments
• Engine mounted electro-viscous cooling fan and efficient Charge air cooling system to handle extreme hot
driving conditions as in Death Valley, California
• Turbo matching optimization for improved performance at altitude
• Cold package enhancements to effectively handle the very cold conditions in northern U.S. and Canada
− Ceramic Glow Plugs, higher output Starter Motor, Block Heater, and charging system updates for cold
starting down to -40°F
− PCV Heater and Active Fuel Return Heating for continued operation
NVH ENHANCEMENTS
• Top of engine acoustic treatment, damped steel timing drive cover and lower oil pan, and isolated heat
shields yield over 50% reduction in engine noise from its predecessor
• Longitudinally central Balance Shafts for improved 2nd order vibration and shaking
• First in-segment for Hydraulic Engine Motor Mounts
• Centrifugal Pendulum Vibration Absorber torque converter to smooth out engine torsional vibrations for
all driving conditions
SAE CERTIFIED HORSEPOWER AND TORQUE
FUEL ECONOMY
Available Later in 2015