GM Debuts New Three-Cylinder Turbo Engine

GM Debuts New Three-Cylinder Turbo Engine

General Motors unveiled its 1.0-liter three-cylinder engine bound initially for the Opal Adam city car ahead of its Frankfurt Motor Show debut. 

General Motors says the turbo three-pot powerplant makes 115 hp and 122 lb-ft of torque, and in the Adam will be mated to a six-speed manual transmission. The engine uses turbocharging and continuously-variable valve timing to improve efficiency while maintaining power. In fact, GM says the little powerplant will be comparable to its current 1.6-liter engine output while enjoying up to a 20 percent efficiency gain.

Past reports suggest that Chevrolet might borrow the engine for the 2016 Volt. The downsized powerplant could offer gains based on weight savings, but it’s hard to see how the turbocharger would offer any benefit.

Something like the Spark, which uses a larger 1.2-liter engine could benefit more from the force-fed engine. Currently, the Spark’s 1.2-liter engine offers 84 hp and 83 lb-ft of torque.

Transplanting the smaller engine would also help Chevrolet to continue competing with Ford’s 1.0-liter EcoBoost engine headed for the Fiesta later this year.

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