BorgWarner will expand its variable cam timing (VCT) line with a new family of cam phasers for I4 engines.

The modular design supports a variety of cam phasing technologies, including cam torque actuated (CTA) and torsional assist (TA) phasers with optional mid position lock technology. Each phaser also features an integrated centre bolt and spool valve for smaller package size and easier installation.

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The technology will launch with “a major global automaker on diesel and gasoline applications in 2015” with production at a new factory in eastern Europe.

“I4 engines have captured about 75% of the global engine market and are forecast to power over 17m additional vehicles in the next seven years. Our new cam phasing technology is engineered to offer automakers customised, fast-to-market VCT solutions to support increasing demand for efficient, downsized engines,” said Joe Fadool, president and general manager, BorgWarner Morse TEC.

“Our modular cam phaser technology gives automakers more flexibility in choosing the configuration that best meets their performance parameters with the added benefits of a compact package and simplified installation.”

Using the existing torsional energy in the valve train, CTA phasers actuate more quickly, use less engine oil and operate under a wider range of engine speeds and temperatures than conventional VCT systems. TA phasers, which use torsional energy and standard engine oil pressure to actuate the phaser, offer a wide range of authority, achieving 70 degrees of crank rotation or more. The phasers can actuate rapidly, resulting in improved low-end engine performance in downsized, direct-injected boosted engines.

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For added calibration opportunities, the patented mid position lock technology allows an increased range of camshaft positioning with a default stop at an intermediate position within the expanded range of travel. The built-in failsafe ensures the phaser returns to the middle position for reliable engine starts in nearly any potential operating condition. All phasers also feature an integrated centre bolt and spool valve, resulting in a compact design that has fewer parts and is easy to install.