METHOD FOR DETERMINING AND SELECTING THE OPTIMAL GEAR BEFORE DRIVING INTO A CURVE FOR A MOTOR VEHICLE HAVING AN AUTOMATIC TRANSMISSION
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Abstract
A method of determining and shifting to an optimal gear in a vehicle prior to entering a curve in a vehicle which comprises an automatic transmission. A curve speed limit is determined for an anticipated curve which is recognized by a navigation device, an anticipated road pattern and dependent on the vehicle and curve or road data, and a sportiness indicator (Ftyp). For each anticipated curve, an actual, optimal gear is determined, based on the determined curve speed limit and the sportiness indicator (FTyp) and, after determinating the optimal gear, the method performs a check to determine whether or not the optimal gear deviates from the engaged gear (RGA_DEST). When a deviation is recognized and a driver reaction, which causes a deceleration of the vehicle and/or a reduction of the vehicle speed, is present, a down shift down to the actual, optimal gear occurs.
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Citations
14 Claims
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1-7. -7. (canceled)
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8. A method of determining and shifting, in a vehicle comprising an automatic transmission, to an optimal gear prior to entering a curve, the method comprising the steps of:
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determining a curve speed limit for an anticipated curve which is recognized by a navigation device by a digital map and an anticipated road pattern, dependent on the vehicle and curve or road data, respectively, as well as a sportiness indicator (FTyp), determining the actual, optimal gear for the anticipated curve based on the determined curve speed limit and the sportiness indicator (FTyp), and after determinating the actual, optimal gear, checking if the actual, optimal gear deviates from an engaged gear (RGA_DEST) of the transmission, and when a gear deviation is recognized and a driver reaction is present, which causes at least one of a deceleration of the vehicle and a reduction of the speed of the vehicle, down shifting into the actual, optimal gear occurs. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification