BorgWarner says it will expand its variable cam timing (VCT) technology with a new family of cam phasers for I4 engines. The company claims the modular design supports a variety of cam phasing technologies, including cam torque actuated (CTA) and torsional assist (TA) phasers with w optional mid position lock technology. The technology is planned to launch with a major global vehicle maker on diesel and gasoline applications in 2015. Both will be supported by production at a new facility in Eastern Europe.