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GM details Tripower four-cylinder engine

by Ronan Glon

The next-gen Sierra and Silverado will inaugurate the engine.

General Motors has announced it will resurrect the Tripower nameplate to use it on a brand-new, 2.7-liter four-cylinder engine. The next generation of the Chevrolet Silverado (pictured) and the GMC Sierra pickup trucks scheduled to arrive as 2019 models will inaugurate the turbo four in the coming months.

Industry trade journal notes General Motors designed the Tripower engine specifically for truck applications. The name denotes a 2.7-liter four-cylinder engine turbocharged to produce 310 horsepower; in comparison, the outgoing 2018 Silverado's 4.3-liter V6 makes 285 horsepower while its 5.3-liter V8 delivers 355.

Tripower refers to a trio of technologies engineers added to keep fuel economy in check. The first is cylinder deactivation. It's a well-known feature that shuts down two of the four cylinders under light load conditions, effectively turning the engine into a two-cylinder -- in a full-size truck, no less. The engine returns to four-cylinder operation in a few tenths of a second when the driver summons its full output.

The second is active thermal management. It keeps the engine in its optimal thermal efficiency range by warming up or cooling down certain components. Finally, the third technology is called intake valve lift control. It controls the intake valves' movement to improve fuel economy. Gas mileage figures haven't been released yet.

Don't expect to see the Tripower engine offered in a Camaro or a Spark. It's not too far-fetched to speculate it will become available on the next-generation Suburban, Tahoe/Yukon, and possibly Escalade models in the coming years, however.

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