particular engines for passenger cars or freight vehicles in this case the pressure in the pressure accumulator can amount to as much as 1800 bar and can be regulated in the range from 200 2000 bar the internal combustion engine can be a gasoline internal combustion engine in particular for passenger cars or freight vehicles in this case the pressure in the pressure accumulator is usually significantly lower and tends to lie in the range from 200 600 bar furthermore owing to the use of the fuel pressure regulating system in an internal combustion engine an internal combustion engine having the fuel pressure regulating system according to various embodiments is made available also provided is a fuel pressure regulating method for an internal combustion engine said method comprising a pressure accumulator which stores fuel under pressure and feeds injectors providing combustion chambers of the internal combustion engine with fuel a high pressure pump which supplies a fuel mass flow to the pressure accumulator a first valve via which fuel can be discharged from the pressure accumulator and a second valve for throttling the fuel mass flow wherein a first closed loop control circuit having the first valve as a final control element for regulating the pressure in the pressure accumulator and a second closed loop control circuit having the second valve as a final control element for regulating the pressure in the pressure accumulator are provided such that the two closed loop control circuits form a cascade controller having the first closed loop control circuit as the master controller and the second closed loop control circuit as a slave controller by means of a fuel pressure regulating method of said type it is possible to implement a requirement oriented delivery of the fuel while at the same time.