Hydraulic steering system

A vehicle comprising:

• at least one steerable wheel;
• at least one steering angle detection device which detects at least one of a steering direction or a steering speed of a steering device that is operable by a driver of the vehicle and which outputs control signals;
• and
• a hydraulic steering system which receives the control signals from the steering angle detection device and is arranged so as to activate a steering movement of the at least one steerable wheel, wherein the hydraulic steering system comprises:
• a steering cylinder having two chambers and a hydraulic connection each of the two chambers for activating a steering movement of the at least one steerable wheel;
• at least one hydraulic pump;
• at least one hydraulic tank for receiving hydraulic oil;
• a steering block which comprises:
• two first hydraulic connections for connecting to the two hydraulic connections of the steering cylinder;
• at least two second hydraulic connections for supplying hydraulic oil from the hydraulic pump to the steering block and feeding the hydraulic oil back into the hydraulic tank;
• and
• a controllable valve assembly which receives control signals from a steering angle detection device, wherein the controllable valve assembly is designed to convey hydraulic oil to the steering cylinder on the basis of said control signals and to be shiftable into at least one neutral position in which it allows a flow of hydraulic oil between the two chambers of the steering cylinder;
• and
• a pump device which is designed to stimulate the flow of hydraulic oil between the two chambers of the steering cylinder when the valve assembly is in the neutral position, and wherein the pump device is integral with the steering block.