2020 Chevrolet Silverado’s New, Advanced 3.0L Duramax Turbo-Diesel Redefines Expectations
No-compromise engine delivers refinement, opening and potency
OSHAWA (Monday, Jun 3, 2019) — The all-new 2020 Chevrolet Silverado’s accessible 3.0L Duramax inline-six turbo-diesel engine adds choice and flexibility for full-size lorry customers, charity class-leading torque and horsepower in further to focusing on fuel economy and capability. It is a first-ever inline-six turbo-diesel charity in Chevrolet’s full-size light-duty trucks.
Chevrolet engineers started with a clean-sheet pattern and grown an all-new engine that leverages a potency and excellence advantages of a inline six-cylinder pattern and incorporates modernized explosion and emissions technologies to optimize opening and efficiency.
“From a impulse a engine is started, to a idle, acceleration and highway cruising, a 3.0L Duramax opening will change perceptions of what a diesel engine can offer in refinement,” pronounced Nicola Menarini, executive for Diesel Truck Engine Program Execution. “With modernized technologies that pull on tellurian diesel expertise, it’s a no-compromise choice for those who wish a capability and pushing operation of a diesel in a light-duty truck.”
Available on LT, RST, LTZ and High Country models, a 3.0L Duramax diesel rounds out a new Silverado’s operation of 6 thrust choices, any tailored to fit customers’ needs for performance, efficiency, record and value. It is rated during an SAE-certified 206.56 kilowatts (277 horsepower) and 624 Nm (460 lb-ft) of torque delivering 95 percent of rise torque during usually 1,250 rpm. Peak torque is postulated from 1,500 rpm by 3,000 rpm, providing a strenuously well-spoken and gratifying pushing experience.
The 3.0L Duramax is interconnected with GM’s 10L80 10-speed involuntary transmission, featuring a centrifugal pendulum absorber torque converter that reduces vibrations to urge smoothness, reinforcing a performance, potency and refinement. This mixed also offers empty braking, that uses a diesel engine’s application to assistance delayed a vehicle, requiring fewer stop applications by a motorist when in Tow Haul mode.
Innovative Engine Technologies
The inline six-cylinder pattern offers fundamental potency and refinement, though a group stretched with intelligent record choices to assistance urge potency and weight while optimizing a lorry experience. A lightweight aluminum retard and cylinder conduct revoke altogether mass, and Active Thermal Management enhances potency and cold-weather warm-up. Ceramic feverishness plugs also assistance with shorter heat-up times and a quicker cold start, definition a engine retard heater is not indispensable until -30 degrees C (-22 degrees F).
Towing is an critical partial of owning a truck, and business can benefit additional certainty interjection to a empty stop accessible in tow-haul mode. The H2O assign atmosphere cooler, joined with low vigour EGR, reduces time to torque. The non-static geometry turbocharger helps yield a larger change of opening and efficiency, and an electronically non-static intake plural helps optimize opening opposite a rpm band.
Inherently fit and balanced
Compared to a DOHC V-6, a inline-six pattern offers larger potency from a reduced attrition of handling usually twin camshafts and their compared valvetrain components. The I6 pattern offers a ideal change of primary and delegate forces, but a need for balancing shafts.
“In further to reduced friction, a pattern enables well-spoken operation,” Menarini said. “The new Duramax 3.0L elevates a 2019 Silverado with one of a many polished and fit diesel engines in a segment.”
Along with ancillary elements such as a tuned atmosphere initiation complement and other noise-attenuating elements, a 3.0L Duramax delivers well-developed serenity and fibre during all engine speeds.
All-aluminum construction and tough rotating assembly
The 3.0L Duramax cylinder retard is done of a expel aluminum amalgamate that provides a strength compulsory to support a high explosion pressures that start within a diesel engine, while also charity an approximately 25 per cent mass assets over a allied expel iron engine block. Iron cylinder liners are used within a aluminum retard to protection lorry durability.
There are 7 nodular iron categorical temperament caps that assistance safeguard a block’s strength underneath those high explosion pressures, while also enabling accurate plcae of a rotating assembly. A deep-skirt retard design, where a retard casting extends next a crankshaft centerline, also contributes to a engine’s rigidity and refinement. It’s complemented by a stiffness-enhancing aluminum revoke crankcase prolongation trustworthy to a categorical temperament caps.
The rotating public consists of a fake steel crankshaft, fake steel joining rods and hypereutectic aluminum pistons. The alloys in a particular castings for a rods and pistons make them lightweight and durable. Silicon is blended with a aluminum for feverishness insurgency and toleration within a piston cylinders, that enhances opening and creates a engine quiet.
A thick piston climax — a tip of a piston — and reinforced tip ring supplement strength to support a extensive cylinder pressures enabled by turbocharging and a engine’s high 15.0:1 application ratio.
DOHC Cylinder Head and Rear Cam Drive
Overhead camshafts offer a direct, fit means of handling a valves, while 4 valves per cylinder activated by maintenance-free finger supporters with hydraulic lash adjusters boost airflow in and out of a engine. This arrangement is integrated on a Duramax 3.0L’s lightweight aluminum cylinder head, that is surfaced with a lightweight combination cam cover that incorporates a crankcase movement and oil subdivision systems.
A span of lightweight, fabricated camshafts actuates 1.12-inch (28.35 mm) hole intake and 0.97-inch (24.55 mm) hole empty valves. The camshaft drivetrain is singly located during a behind (flywheel side) of a engine, for larger excellence and wrapping considerations for a partially prolonged inline-six. A crankshaft-driven sequence drives a high-pressure direct-injection fuel pump, while a sequence driven by a fuel siphon drives both intake and empty camshafts. A smaller belt drives a non-static upsurge oil siphon from a crankshaft.
Additional Technology Highlights
Variable geometry turbocharging enables the Duramax 3.0L engine to broach class-leading horsepower with minimal outcome on altogether efficiency. The complement uses sealed loop tranquil vanes position and worldly electronic controls to automatically adjust boost vigour to a preferred value formed on engine using conditions and immediate energy demand. The liquid-cooled turbocharger facilities a low-friction ball-bearing missile and is mounted tighten to a empty opening of a engine for quicker spool-up of a turbine and quicker light-off of a empty catalyst. A water-to-air intercooling complement produces a cooler aloft firmness atmosphere assign for larger power. Maximum boost vigour is 300 Kpa (43,5 psi) absolute.
Low-pressure EGR: The Duramax 3.0L utilizes new low-pressure Exhaust Gas Recirculation to optimize opening and efficiency. The EGR complement diverts some of a engine-out empty gas and mixes it behind into a uninformed intake atmosphere stream, that is drawn into a cylinder conduct for combustion. That lowers explosion temperatures and rates.
Traditionally, EGR systems in diesel applications recirculate empty gases between a twin high-pressure points, a empty manifold(s) and intake manifold. However, it generally requires efficiency-robbing assistance from a turbocharger or other ancillary elements to grasp a vigour differential compulsory for sufficient EGR upsurge rates.
The new low-pressure complement adds to a high-pressure system, ancillary continual composition of empty backpressure for some-more fit operation. It recirculates gases between a low-pressure points in a empty complement (downstream of a particulate filter) and after a compressor inlet.
When a low-pressure EGR is activated by an electronically tranquil valve, a engine browns empty gas that has already upheld by a particulate filter. That increases a turbocharger’s efficiency, that helps altogether automobile potency but deteriorating a rate of particulate matter issued by a engine.
A non-static intake plural offers twin atmosphere intake pathways for any cylinder. Electronically tranquil flaps — one for any cylinder — digest or widen a airflow to any cylinder. This optimizes a airflow into a engine and improves opening and responsiveness opposite a rpm band, quite during revoke engine speeds.
A variable-pressure oiling system with a invariably variable-displacement vane oil siphon enhances potency by optimizing oil vigour as a duty of engine speed and load. With it, a oil supply is matched to a engine mandate rather than a extreme supply of a conventional, fixed-displacement oil pump. The engine uses low-friction Diesel Dexos 0W20 oil.
Oil jets located in a retard are employed for opening and feverishness control. They aim a middle core of a piston with an additional covering of cooling, friction-reducing oil. The jets revoke piston temperature, permitting a engine to furnish some-more energy and raise long-term continuance than engines but a technology.
Active Thermal Management helps a engine comfortable adult fast to grasp and say a optimal engine feverishness for opening and potency over a whole engine handling range. The complement uses a three-actuator rotary valve complement to discharge coolant by a engine in a targeted manner. It sends feverishness where it’s indispensable to comfortable adult a engine to revoke attrition and feverishness a newcomer cabin or cools when indispensable for high-power operation. The Duramax 3.0L also facilities separate cooling between a retard and head.
Common rail approach fuel injection of 36,250 psi (2,500 bar) helps generates class-leading horsepower and torque. The system’s vigour is generated by an engine-driven twin-piston siphon promulgation fuel to solenoid-activated injectors with nine-hole nozzles that support accurate metering of a fuel for a well-spoken idle and revoke explosion noise. The fuel complement is able of mixed injections per explosion cycle — adult to 10 times per injector — for some-more unchanging and fast explosion opening that translates into fibre and refinement, quite during idle.
Electronic stifle valve: The Duramax 3.0L facilities an electronic stifle valve to umpire intake plural vigour in sequence to optimize empty gas recirculation rates. It also contributes to a well-spoken engine shutdown around a some-more tranquil process of airflow reduction.
Ceramic feverishness plugs used in a Duramax 3.0L feverishness adult some-more fast and hotter than required metal-based feverishness plugs, assisting a engine start and feverishness adult some-more fast in cold weather. The Duramax 3.0L achieves unassisted and assisted starting temperatures of -30 C (-22 F) and -40 C (-40 F) respectively.
Stop/start record helps optimize potency in city driving. The driver-selectable complement shuts off a engine during stoplights and other stop-and-go situations. The engine automatically restarts when a motorist takes their feet off a brake.
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2019 CHEVROLET SILVERADO 3.0L DURAMAX TURBO-DIESEL SPECIFICATIONS