Vehicle with auxiliary rear wheel steering mechanism

A nontrack-bound vehicle, comprising:

• arbitrarily steerable front wheels;
• and
• an additional rear-wheel steering system, the additional rear-wheel steering system one of operating automatically and being switchable to operate automatically, the additional rear-wheel steering system one of controlling and regulating a steering angle of rear wheels as a function of a steering angle of the front wheels and as a function of at least one further parameter, the additional rear-wheel steering system being configured to switch in a parameter-dependent manner between a drive-away mode and a normal mode;
• wherein, in the drive-away mode, the rear-wheel steering angle is one of controlled and regulated so that the rear wheels are not adjusted beyond a steering angle achieved when the vehicle was last halted;
• wherein the steering angle achieved when the vehicle was last halted defines a halt steering angle;
• and
• wherein the additional rear-wheel steering system is configured to switch from the drive-away mode to the normal mode in accordance with the rear wheels achieving a steering angle that is smaller than the halt steering angle.

A nontrack-bound vehicle, comprising:

• arbitrarily steerable front wheels;
• and
• an additional rear-wheel steering system, the additional rear-wheel steering system one of operating automatically and being switchable to operate automatically, the additional rear-wheel steering system one of controlling and regulating a steering angle of rear wheels as a function of a steering angle of the front wheels and as a function of at least one further parameter, the additional rear-wheel steering system being configured to switch in a parameter-dependent manner between a drive-away mode and a normal mode;
• wherein, in the drive-away mode, the rear-wheel steering angle is one of controlled and regulated so that the rear wheels are not adjusted beyond a steering angle achieved when the vehicle was last halted;
• wherein the steering angle achieved when the vehicle was last halted defines a halt steering angle;
• wherein the steering angle of the rear wheels is proportionally dependent on the steering angle of the front wheels up to a maximum steering angle;
• and
• wherein the steering angle of the rear wheels is constant when the steering angle of the front wheels exceeds the maximum steering angle, the halt steering angle corresponding to the maximum steering angle during the drive-away mode.

A nontrack-bound vehicle, comprising:

• arbitrarily steerable front wheels;
• and
• an additional rear-wheel steering system, the additional rear-wheel steering system one of operating automatically and being switchable to operate automatically, the additional rear-wheel steering system one of controlling and regulating a steering angle of rear wheels as a function of a steering angle of the front wheels and as a function of at least one further parameter, the additional rear-wheel steering system being configured to switch in a parameter-dependent manner between a drive-away mode and a normal mode;
• wherein, in the drive-away mode, the rear-wheel steering angle is one of controlled and regulated so that the rear wheels are not adjusted beyond a steering angle achieved when the vehicle was last halted;
• wherein the steering angle achieved when the vehicle was last halted defines a halt steering angle;
• and
• wherein the halt steering angle is determined when halting in forward motion and when halting in reverse motion and wherein the halt steering angle is maintained in the drive-away mode when the vehicle travels forwardly and when the vehicle travels backwardly.

A nontrack-bound vehicle, comprising:

• arbitrarily steerable front wheels;
• and
• an additional rear-wheel steering system, the additional rear-wheel steering system one of operating automatically and being switchable to operate automatically, the additional rear-wheel steering system one of controlling and regulating a steering angle of rear wheels as a function of a steering angle of the front wheels and as a function of at least one further parameter, the additional rear-wheel steering system being configured to switch in a parameter-dependent manner between a drive-away mode and a normal mode;
• wherein, in the drive-away mode, the rear-wheel steering angle is one of controlled and regulated so that the rear wheels are not adjusted beyond a steering angle achieved when the vehicle was last halted;
• wherein the steering angle achieved when the vehicle was last halted defines a halt steering angle;
• and
• wherein an absolute value of the halt steering angle is maintained so that in the drive-away mode, the rear wheels are not adjusted beyond the absolute value of the halt steering angle either when turned to the left or to the right.

A nontrack-bound vehicle, comprising:

• arbitrarily steerable front wheels;
• and
• an additional rear-wheel steering system, the additional rear-wheel steering system configured to one of operate automatically and to be switched to operate automatically, the additional rear-wheel steering system configured to one of control and regulate a steering angle of rear wheels as a function of a steering angle of the front wheels and as a function of at least one further parameter, the additional rear-wheel steering system configured to switch in a parameter-dependent manner between a drive-away mode and a normal mode;
• wherein, in the drive-away mode, the rear-wheel steering angle is one of controlled and regulated so that the rear wheels are not adjusted beyond a steering angle achieved when the vehicle was last halted.