Method for determining and selecting the optimal gear before driving into a curve for a motor vehicle having an automatic transmission
First Claim
1. A method of determining and shifting to an optimal gear, prior to entering a curve, in a vehicle comprising an automatic transmission, the method comprising the steps of:
- determining, via at least one parameter table stored in a transmission control device, a sportiness counter value that represents an incremental measurement of a desired level of sportiness of the driver;
determining, via the at least one parameter table stored in the transmission control device, 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 vehicle data and curve or road data, respectively, as well as the sportiness counter value (FTyp), determining, via the at least one parameter table stored in the transmission control device, an actual, optimal gear for the anticipated curve based on the determined curve speed limit and the sportiness counter value (FTyp), after determining, via the transmission control device, the actual, optimal gear, checking if the actual, optimal gear deviates from an engaged gear (RGA_DEST) of the transmission, determining, via the transmission control device, if either (a) a driver reaction that causes a deceleration of the vehicle is present or (b) a reduction of a speed of the vehicle is present, and down shifting, via the transmission control device, from the engaged gear to the actual, optimal gear when both a gear deviation is recognized and one of;
the driver reaction that causes a deceleration of the vehicle is present and the reduction of a speed of the vehicle is present.
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Accused Products
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 determining 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.
30 Citations
18 Claims
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1. A method of determining and shifting to an optimal gear, prior to entering a curve, in a vehicle comprising an automatic transmission, the method comprising the steps of:
- determining, via at least one parameter table stored in a transmission control device, a sportiness counter value that represents an incremental measurement of a desired level of sportiness of the driver;
determining, via the at least one parameter table stored in the transmission control device, 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 vehicle data and curve or road data, respectively, as well as the sportiness counter value (FTyp), determining, via the at least one parameter table stored in the transmission control device, an actual, optimal gear for the anticipated curve based on the determined curve speed limit and the sportiness counter value (FTyp), after determining, via the transmission control device, the actual, optimal gear, checking if the actual, optimal gear deviates from an engaged gear (RGA_DEST) of the transmission, determining, via the transmission control device, if either (a) a driver reaction that causes a deceleration of the vehicle is present or (b) a reduction of a speed of the vehicle is present, and down shifting, via the transmission control device, from the engaged gear to the actual, optimal gear when both a gear deviation is recognized and one of;
the driver reaction that causes a deceleration of the vehicle is present and the reduction of a speed of the vehicle is present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
- determining, via at least one parameter table stored in a transmission control device, a sportiness counter value that represents an incremental measurement of a desired level of sportiness of the driver;
Specification