|2011 Mustang GT Ti-VCT Engine Overview
Twin Independent Variable Camshaft Timing (Ti-VCT) will allow drivers of the 2011 Mustang GT to balance high performance and fuel economy. "Ti-VCT is a win-win-win technology," said Barb Samardzich, vice president, global powertrain development. "It helps our new range of engines to deliver high performance with unsurpassed projected highway fuel economy of 25 miles per gallon and reduced emissions."
Ti-VCT provides extremely precise variable - yet independent - control of timing for intake and exhaust valves. Drivers of the 2011 Mustang GT will notice abundant torque and class-leading fuel economy. An additional benefit of Ti-VCT is a reduction of emissions, especially in situations when the throttle is partially open. Independent adjustment of intake and exhaust valve timing allows maximum fuel economy at part-throttle, while delivering optimized power in full-throttle situations. An added benefit is improved drivability and responsiveness across the torque curve.
How Ti-VCT works
The new 5.0-liter V-8 in the 2011 Mustang GT is a double-overhead-camshaft configuration that employs two camshafts per cylinder bank - one camshaft to operate the intake valves and one camshaft to operate the exhaust valves. Ti-VCT rotates the camshafts to advance or retard the cam timing, based on several measures including throttle opening.
An element unique to the Mustang GT 5.0-liter V-8 application is that Ti-VCT is actuated by camshaft torque, with assistance from pressurized oil. Using camshaft torque energy provides faster throttle response and maximizes use of existing energy, to aid fuel economy. Camshaft torque energy Ti-VCT actuation is a Ford innovation, introduced first on the 3.0-liter V-6. Working like a ratchet, the one-way valves allow precise timing of camshaft events, continually optimizing timing to provide maximum thrust or fuel economy, based on driver input. "Ti-VCT technology will continue to proliferate across the Ford powertrain portfolio," said Samardzich. "By 2013, you can expect to see this advancement available on 90 percent of our nameplates."
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