“This latest technology is planned to launch with a major global automaker of diesel and gasoline applications in 2015.”
Wayne Gerdes -
CleanMPG - Oct. 7, 2012
BorgWarner's all-new family of cam phasers offer a flexible and compact VCT solution.
On Friday, BorgWarner announced that it will expand its variable cam timing (VCT) technology 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 center bolt and spool valve for smaller package size and easier installation.
BorgWarner Execs sais their new modular cam phaser technology gives automakers more flexibility in choosing the configuration that best meets their desired performance parameters with the benefit of a compact package.
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 work over a very large angular range of up to 70 degrees of crank rotation or more. BorgWarner phasers can actuate rapidly, resulting in improved low-end engine performance in downsized, direct-injected and turbo charged engines.
BorgWarner's 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.
According to the manufacturer, all phasers feature an integrated center bolt and spool valve, resulting in a compact design that has fewer parts and is easy to install.
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