MULTI-SPEED AUTOMATIC VEHICLE TRANSMISSION
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Abstract
A vehicle (10) has an automatic multi-speed transmission. For starting from rest a launch ratio is selected by a slope and/or obstacle device (13, 15) according to identification of an up-slope (12), a down slope, or an obstacle (17, 18).
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Citations
42 Claims
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1-25. -25. (canceled)
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26. A method of selecting a launch speed ratio in a vehicle automatic transmission having a plurality of selectable speed ratios, the method comprising:
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detecting at least one of a slope and an obstacle, in the path of a vehicle, in dependence on an output of a sensing device on the vehicle looking in a direction of intended travel, and selecting a launch speed ratio appropriate to at least one of a detected slope and climbing a detected obstacle. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification