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GM patent reveals new two-stage turbocharger

New two-stage turbocharger utilizes a low-pressure and high-pressure turbine in a series.

General Motors has filed a patent for a new two-stage turbocharger that should increase performance and negate lag.

Video
Revel in the glory of the Porsche 911 engine factory

Take a tour of the Porsche 911 engine factory in Zuffenhausen, Germany, as the company's flat-six mills are made in this video. The place is hypnotic in its efficiency to watch each part slowly come together to create these famously fantastic mills. Hardly any noise rises above the hum of the assembly line.

Report
Volvo developing new three-cylinder engine family

Pop the hood on a Volvo of recent vintage and you'll find four-, five-, six- and even eight-cylinder engines. But the Swedish automaker is downsizing its engines over the coming years. The new XC90, set to be revealed later this week, will use a new family of four-cylinder engines (like the one pictured above). But that's not even the end of it as emerging reports speak of a new three-cylinder engine

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