Control process and device for motor vehicles with a foldaway roof
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsReinhold Kluge, Carsten Eidmann
Life of this patent
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Abstract
In a control process and control device for motor vehicles with an unfoldable roof, in which at least one roof part or a lid is moved in at least one movement phase defined by a displacement path for the roof part or the lid, the displacement path is bounded by two end positions. By way of an electronic control device, the displacement device for the movement of the roof part or of the lid is actuated such that the speed at which the roof part or the lid is moved is smaller for a first path segment beginning the displacement path and for a second path segment ending the displacement path than the speed for the path segment between the first path segment and the second path segment.
Claims10
A control process for a motor vehicle having a roof with at least one roof part or a lid movable in at least one movement phase defined by a displacement path of the roof part or the lid which is bounded by two end positions, the control process comprising the acts of:
- for a first path segment beginning the displacement path and for a second path segment ending the displacement path, moving the roof part or the lid at a first speed;
- for a third path segment between the first path segment and the second path segment, moving the roof part or the lid at a second speed greater than the first speed;
- and
- wherein a displacement device for the movement of the roof part or the lid at the first and second speeds is actuated by a programmed electronic control devices,
- wherein a change-over between said first speed and said second speed comprises a controlled transition as a function of an external temperature.
A control device for a motor vehicle with a roof in which at least one roof part or a lid is movable in at least one movement phase defined by a displacement path for the roof part or the lid, the displacement being bounded by two end positions, the control device comprising:
- a displacement device for moving the roof part or the lid;
- a programmed electronic control device operatively coupled to actuate the displacement device;
- wherein the programmed electronic control device comprises means for actuating the displacement device such that a speed at which the roof part or the lid is moved is smaller for a first path segment beginning the displacement path and for a second path segment ending the displacement path than for a speed for a third path segment between the first path segment and the second path segment,
- wherein the displacement device comprises an electric motor with a rotational speed that is adjustable by the programmed electronic control device so as to reach the speeds,
- wherein the electric motor is operable by the programmed electronic control device at a first rotational speed for reaching a predefined, comparatively low, first speed for the first and second path segment, and at a second rotational speed for reaching a predefined, comparatively high, second speed for the third path segment,
- wherein the electronic control device is configured such that a change-over from the first rotational speed to the second rotational speed and/or a change-over from the second rotational speed to the first rotational speed is carried out as a function of at least one from the group consisting of an external temperature and state of a battery of the vehicle.
Dependencies are inferred from the claim text.