BorgWarner details VCT technology and Hyundai applications

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BorgWarner has announced it has supplied the first combination of its variable cam timing (VCT) technologies, including its patented cam torque actuated (CTA) phasers with mid-position lock and integrated center bolt, for Hyundai’s improved Lambda II V-6 engines.

The 3.0- to 3.8-liter gasoline engines debuted in the 2016 Hyundai Genesis EQ900, G90, G80 and Aslan as well as the Kia K7. Featuring an integrated center bolt for easy assembly, BorgWarner’s CTA phasers with mid-position lock respond faster than traditional VCT systems, enabling engine designers to employ new calibration strategies that contribute to the engine’s 1.7 percent increase in fuel economy.

BorgWarner’s CTA phasers take advantage of the existing torsional energy in the valve train to actuate faster and operate under a wider range of engine speeds and temperatures than conventional VCT systems. Using a variable force solenoid, CTA phasers require less engine oil, which also reduces parasitic losses and enables oil-actuated variable valve lift systems to operate with an expanded duty cycle. 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.

Unlike competitive models that require active control to return to default position and relock, BorgWarner’s passive mid-lock technology ensures failsafe return to the mid-park position for reliable engine starts in any operating condition. The integrated center bolt simplifies engine production on the assembly line.

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Dean has been with UKi Media & Events for over a decade, having previously cut his journalistic teeth writing and editing for various automotive and engineering titles. He combines extensive knowledge of all things automotive with a passion for driving, and experience testing countless new vehicles, engines and technologies around the world. As well as his role as editor-in-chief across a range of UKi's media titles, he is also co-chair of the judging panel of the International Engine of the Year Awards.

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