Transmission control device for automatic transmission
First Claim
1. A transmission control device for an automatic transmission, comprising:
- a current position detector that is configured to detect a current position of a vehicle;
a storage device configured to store road data;
a corner determinator that is configured to detect a corner appearing in a traveling direction of the vehicle and determine whether a detected corner is a blind corner in which an end of the corner is not visible from the vehicle, based upon the detected current position and the stored road data;
a blind distance calculator that is configured to calculate, when a determination is made that the corner is a blind corner, a distance from the determined blind corner to the vehicle based upon the detected current position and the stored road data;
a necessary engine braking amount calculator that is configured to calculate, based upon the calculated distance, a necessary engine braking amount necessary for decelerating a current vehicle speed to a vehicle speed at which it is possible to stop around the blind corner when a braking operation is performed with a full braking amount;
a required speed change stage determinator that is configured to determine a required speed change stage on a basis of the calculated necessary engine braking amount; and
a transmission controller that is configured to perform transmission control so as to achieve a downshift to the determined required speed change stage.
1 Assignment
0 Petitions
Accused Products
Abstract
A corner determinator detects a corner appearing in a traveling direction of a vehicle and determines whether a detected corner is a blind corner based upon a current position of the vehicle and road data. A blind distance calculator calculates a distance from the determined blind corner to the vehicle based upon the current position of the vehicle and the road data. A necessary engine braking amount calculator calculates, on the basis of a calculated distance, a necessary engine braking amount necessary for decelerating a current vehicle speed to a vehicle speed at which it is possible to stop around the blind corner when a braking operation is performed with a full braking amount. A required speed change stage determinator calculates a required speed change stage based upon the determined necessary engine braking amount. A transmission controller performs a downshift to a determined required speed change stage.
3 Citations
15 Claims
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1. A transmission control device for an automatic transmission, comprising:
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a current position detector that is configured to detect a current position of a vehicle; a storage device configured to store road data; a corner determinator that is configured to detect a corner appearing in a traveling direction of the vehicle and determine whether a detected corner is a blind corner in which an end of the corner is not visible from the vehicle, based upon the detected current position and the stored road data; a blind distance calculator that is configured to calculate, when a determination is made that the corner is a blind corner, a distance from the determined blind corner to the vehicle based upon the detected current position and the stored road data; a necessary engine braking amount calculator that is configured to calculate, based upon the calculated distance, a necessary engine braking amount necessary for decelerating a current vehicle speed to a vehicle speed at which it is possible to stop around the blind corner when a braking operation is performed with a full braking amount; a required speed change stage determinator that is configured to determine a required speed change stage on a basis of the calculated necessary engine braking amount; and a transmission controller that is configured to perform transmission control so as to achieve a downshift to the determined required speed change stage. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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6. A non-transitory computer readable medium having stored thereon processor- executable instructions configured to perform a method comprising the steps of:
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detecting a corner appearing in a traveling direction of a vehicle and determining whether a detected corner is a blind corner where an end of the corner is not visible from the vehicle, on a basis of a current position of the vehicle and road data; calculating, when a determination is made that the corner is a blind corner, a distance from the determined blind corner to the vehicle on a basis of the current position of the vehicle and the road data; calculating, on a basis of the calculated distance, a necessary engine braking amount necessary for decelerating a current vehicle speed to a vehicle speed at which it is possible to stop around the blind corner when a braking operation is performed with a full braking amount; determining a required speed change stage on a basis of the calculated necessary engine braking amount; and performing control so as to achieve a downshift to the determined required speed change stage.
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Specification