Method for operating a two-wheeled vehicle, a device, and a two-wheeled vehicle

A device for operating a two-wheeled vehicle on a roadway, comprising:

• a control unit capable of:
• a) ascertaining an instantaneous coefficient of friction between at least one wheel of the two-wheeled vehicle and the roadway;
• b) calculating a critical tilt angle of the two-wheeled vehicle as a function of at least the instantaneous coefficient of friction;
• c) detecting an instantaneous tilt angle of the two-wheeled vehicle;
• d) determining a distance between the instantaneous tilt angle and the critical tilt angle;
• and
• e) outputting an item of information to a driver of the two-wheeled vehicle as a function of the determined distance;
• wherein the instantaneous coefficient of friction is ascertained using a frictional force between a front wheel of the two-wheeled vehicle and a surface of the roadway,
• wherein a slip or a slip value due to a movement of at least the front wheel of the two-wheeled vehicle is determined, wherein the movement of the front wheel is determined with a rotational speed sensor,
• wherein a value that determines a diameter of Kamm's circle and therefore the critical tilt angle is determined from the slip value and the coefficient of friction,
• wherein the critical tilt angle of the two-wheeled vehicle is calculated as a function of at least the instantaneous coefficient of friction,
• wherein the instantaneous tilt angle of the two-wheeled vehicle is detected with an acceleration sensor, and wherein the instantaneous tilt angle is determined within a predefinable period of time and/or within a fraction of a full wheel rotation,
• wherein the outputting of the item of information includes optically displaying, via an optical signaling device, the item of information to the driver, wherein the item of information is to the distance of the instantaneous tilt angle from the critical tilt angle,
• wherein the determined distance is displayed to the driver by a status pointer and a status bar,
• wherein the status bar represents an annulus sector, and the driver is able to read out an item of information regarding a tilting status of the two-wheeled vehicle with the status bar, wherein a starting point of the status bar is defined at a first location, which is a balanced position of the two-wheeled vehicle,
• wherein the balanced position corresponds to the position that two-wheeled vehicle assumes when a vertical axis of the two-wheeled vehicle is aligned parallel to a direction of a force of gravity, and parallel to a direction of the roadway normal during straight-ahead travel or during a standstill, wherein an end point of the status bar at a second location is defined by the value of the critical tilt angle, and
• wherein the determined distance is displayed to the driver as a number, and wherein a pointer, which is situated between the first and second locations and allocated to the status bar, indicates to the driver the position of the distance relative to the balanced position and the critical tilt angle.

A two-wheeled vehicle, comprising:

• at least one sensor for detecting an instantaneous tilt angle;
• and
• a device for operating the two-wheeled vehicle on a roadway, the device including:
• a control unit capable of:
• a) ascertaining an instantaneous coefficient of friction between at least one wheel of the two-wheeled vehicle and the roadway;
• b) calculating a critical tilt angle of the two-wheeled vehicle as a function of at least the instantaneous coefficient of friction;
• c) detecting an instantaneous tilt angle of the two-wheeled vehicle;
• d) determining a distance between the instantaneous tilt angle and the critical tilt angle;
• and
• e) outputting an item of information to a driver of the two-wheeled vehicle as a function of the determined distance;
• wherein the instantaneous coefficient of friction is ascertained using a frictional force between a front wheel of the two-wheeled vehicle and a surface of the roadway,
• wherein a slip or a slip value due to a movement of at least the front wheel of the two-wheeled vehicle is determined, wherein the movement of the front wheel is determined with a rotational speed sensor,
• wherein a value that determines a diameter of Kamm's circle and therefore the critical tilt angle is determined from the slip value and the coefficient of friction,
• wherein the critical tilt angle of the two-wheeled vehicle is calculated as a function of at least the instantaneous coefficient of friction,
• wherein the instantaneous tilt angle of the two-wheeled vehicle is detected with an acceleration sensor, and wherein the instantaneous tilt angle is determined within a predefinable period of time and/or within a fraction of a full wheel rotation,
• wherein the outputting of the item of information includes optically displaying, via an optical signaling device, the item of information to the driver, wherein the item of information is to the distance of the instantaneous tilt angle from the critical tilt angle,
• wherein the determined distance is displayed to the driver by a status pointer and a status bar,
• wherein the status bar represents an annulus sector, and the driver is able to read out an item of information regarding a tilting status of the two-wheeled vehicle with the status bar, wherein a starting point of the status bar is defined at a first location, which is a balanced position of the two-wheeled vehicle,
• wherein the balanced position corresponds to the position that two-wheeled vehicle assumes when a vertical axis of the two-wheeled vehicle is aligned parallel to a direction of a force of gravity, and parallel to a direction of the roadway normal during straight-ahead travel or during a standstill, wherein an end point of the status bar at a second location is defined by the value of the critical tilt angle, and
• wherein the determined distance is displayed to the driver as a number, and wherein a pointer, which is situated between the first and second locations and allocated to the status bar, indicates to the driver the position of the distance relative to the balanced position and the critical tilt angle.