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Ford Offers New Technology for Better Curve Control

July 01, 2010

Ford Motor Company introduced a new innovation - "Curve Control" - designed to help drivers maintain control of their vehicles when taking a curve too quickly.

Ford safety researchers found through analysis of government crash data that approximately 50,000 crashes annually in the U.S. involve driving too fast on a curve.

Curve Control debuts as standard equipment on the all-new 2011 Ford Explorer going into production later this year, and will be offered on 90 percent of the company's North American crossovers, sport utilities, trucks and vans by 2015.

The technology senses when a driver is taking a curve too quickly and rapidly reduces engine torque and can apply four-wheel braking, slowing the vehicle by up to 10 mph in about one second, according to Ford.

"Too many accidents stem from drivers misjudging their speed going into curves and freeway off- and on-ramps," said Sue Cischke, Ford group vice president of sustainability, environment and safety engineering. "Ford's Curve Control technology senses a potentially dangerous situation and reduces power and applies brakes more quickly than most drivers can react on their own."

Curve Control is effective on dry or wet pavement, and is expected to be particularly useful when drivers are entering or exiting freeway on- or off-ramps with too much speed. When a vehicle enters a curve too fast, the system responds to the driver's steering input by rapidly reducing torque and increasing brake pressure to help keep the vehicle under control, according to the automaker.

The patent-pending system works by measuring how quickly the vehicle is turning and comparing that with how quickly the driver is trying to turn. When the vehicle is not turning as much as the driver is steering - also known as "pushing" - Curve Control activates. The system applies the precise amount of braking required on each wheel to enhance the individual wheel braking of the traditional stability control system.

Based on Ford's exclusive AdvanceTrac with RSC (Roll Stability Control), Curve Control uses sensors to measure roll rate, yaw rate, lateral acceleration, wheel speed and steering wheel angle, and runs calculations based on those inputs 100 times every second.

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