Tuesday, November 18, 2014

Silverado Engines Integrate Advanced Technology, Dependable Design

Fuel-saving EcoTec3 engines build on Small Block legacy

·         Engines operate on four cylinders to save fuel during light-load driving
·         Best fuel efficiency of any gas V-8 pickup – up to 23 mpg EPA highway
·         Proven dependability – more than 100 million Small Blocks built to date

DETROIT – When it comes to trucks, customers place dependability near the top of the list. And when it comes to truck engines, more than 100 million engines’ worth of continuous improvement and trillions of miles support the Chevrolet Silverado V-6 and V-8s claim to delivering on that requirement.

“Silverado is from the family of the most dependable, longest lasting full-size pickups on the road,” said John Fitzpatrick, Silverado marketing manager. “Our latest generation of Small Block engines help customers save money at the pump with engines that have been improved and by real-world experience.”

The 2015 Silverado offers a trio EcoTec3 engines with advanced fuel-saving technologies enabling customers to choose the performance and fuel efficiency that best meets their needs:
·         4.3L V-6; 285 horsepower; 305 lb-ft of torque; up to 24 mpg EPA highway
·         5.3L V-8; 355 horsepower; 383 lb-ft of torque; up to 23 mpg EPA highway
·         6.2L V-8; 420 horsepower; 460 lb-ft of torque; up to 21 mpg EPA highway

Every EcoTec3 engine features advanced technologies such as direct fuel injection, continuously variable valve timing and Active Fuel Management (cylinder deactivation) to provide power, torque and efficiency across a broad range of operating conditions.

“The latest Small Block engines are ideally suited to Silverado and to the tough jobs that pickup customers do every day,” said Jordan Lee, global chief engineer and program manager for Small Block engines. “We give customers the power and torque of a full-size truck engine when they need it, then use Active Fuel Management and other advanced technologies to seamlessly shift to four-cylinder operation when the truck is under light loads, making the most of fuel efficiency.”

Silverado’s EcoTec3 engines are direct descendants of the original Small Block Chevy V-8, and benefit from more than 60 years – and more than 100 million engines’ worth – of continuous improvement.

“Small Block engines have been used, abused, modified and raced in almost every type of car and truck imaginable,” said Lee. “Our engineers are able to draw on that experience to build stronger, more efficient, more dependable engines for Chevy truck customers.”

The latest Gen 5 Small Block engine has endured tough testing, including a grueling performance durability procedure, where it was subjected to a high-speed/high-load torture session that simulated full-throttle blasts from the equivalent of 0 to 120 mph. With simulated transmission shift points inserted during the high-load test, the engine cycles non-stop between peak torque and peak horsepower for hundreds of hours – the equivalent of thousands of miles.

Testing on the Gen 5 Small Block that contributes to the legendary durability of the modern Small Block engines include:
·         Severe thermal cycle testing, which quickly cycles the engine between extreme cold and hot coolant temperatures to validate the durability of engine components such as the head gaskets, exhaust manifolds and more.
·         The “hot scuff” test, in which a brand-new engine – or “green” engine to the engineers – is run at wide-open throttle with no break-in period, helping test critical engine parts such as bearings, piston ring sealing and bore scuffing.
·         Active Fuel Management validation, which cycled the engine in and out of the cylinder-deactivating feature hundreds of thousands of times at a variety of engine speeds to ensure the performance and durability of its unique valve lifters.

Fuel-saving AFM technology reaches 10-year mark
2015 marks the 10th anniversary of Active Fuel Management (AFM), the cylinder deactivation technology that improves fuel economy in trucks by seamlessly switching to four-cylinder mode to help save fuel during light-load driving.

Introduced in 2005, it is currently available on the 2015 Chevrolet Silverado, Tahoe, Suburban, Camaro and Corvette.

Editor’s note: Dependability claim based on longevity: 1987-April 2013 full-size pickup registrations.

Founded in 1911 in Detroit, Chevrolet is now one of the world's largest car brands, doing business in more than 140 countries and selling more than 4.9 million cars and trucks a year. Chevrolet provides customers with fuel-efficient vehicles that feature spirited performance, expressive design, and high quality. More information on Chevrolet models can be found at www.chevrolet.com.

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