Jaguar XK/XKR and XF/XFR Adds Variable Cam Timing Technology
Tuesday, February 17th, 2009
In an effort to improve the fuel consumption and reduce emissions, BorgWarner’s Cam Torque Actuated (CTA(TM)) variable cam timing (VCT) technology has been injected into the all new Jaguar AJ-V8 Gen III 5.0-liter V8 engine.
Unlike traditional cam phasing methods which typically use engine oil pressure to phase the camshaft, BorgWarner’s CTA(TM) technology captures the existing torsional energy in the valve train to accomplish this event, similar to a hydraulic ratchet.
CTA(TM) cam phasers operate more quickly and under a wider range of engine speeds and temperatures than traditional oil pressure actuated cam phasers. These factors allow CTA(TM) variable cam timing to more efficiently improve fuel economy, reduce emissions and increase horsepower.
“BorgWarner’s CTA(TM) technology optimizes variable cam timing, making it more efficient at all engine speeds, with faster response than traditional hydraulic oil-actuated VCT systems,” said Alfred Weber, President and General Manager, BorgWarner Morse TEC. “Jaguar drivers will appreciate its quick response when they push the pedal and enjoy the added benefits of reduced emissions and improved fuel economy.”
(Source) Press
Tags: borgwarner, cam timing, camshaft, engine oil pressure, engine speeds, fuel economy, hydraulic oil, jaguar drivers, jaguar xk, timing technology, torsional energy, traditional oil, variable cam, xfr