Electric motor for installation in a motor vehicle for tapping electrical energy, storing it or feeding it back to an electric drive, comprising or consisting of (i) a drive containing (i-a) a fixed magnetic stator element; (i-b) a rotor element movably disposed in the stator element and consisting of an iron core and a rotor coil wound there around; and (i-c) a drive shaft which is rotatable mounted on which the rotor element is arranged; (i-d) a power supply with sliding contacts for driving the rotor element; and optionally (i-e) a pole changer; (ii) at least two cylinders, each containing therein (ii-a) at least one magnetic core (M1, M2, M3); (ii-b) at least one cylinder coil (X1, X2); (ii-c) a connecting rod (PO,PS,PU); (ii-d) a connecting rod; (iii) a housing for containing the actuator and the cylinders, wherein (a) the magnetic cores (M1, M2, M3) are arranged on the connecting rods (PO,PS,PU) and are movable within the cylinders (b) the at least one cylinder coil (X1, X2) being fixedly arranged in the cylinder; (c) the magnet cores (M1, M2, M3) are connected to the drive shaft via the connecting rods (PO, PS, PU); (d) the connecting rods are arranged in two opposite groups and these two groups are respectively connected to the drive shaft so as to form a "V" shape; wherein (e) the rotary motion of the drive shaft is converted via the connecting rods into a translational motion of the connecting rods (PO, PS, PU) and thus of the magnetic cores (M1, M2, M3) in the individual cylinders, and (f) the magnetic cores (M1, M2, M3) thereby regularly pass through the cylinder coils (X1, X2) arranged in the cylinder and thereby induce a magnetic field and generate electrical energy. (i) a drive containing (i-a) a fixed magnetic stator element; (i-b) a rotor element movably disposed in the stator element and consisting of an iron core and a rotor coil wound there around; and (i-c) a drive shaft which is rotatable mounted on which the rotor element is arranged; (i-d) a power supply with sliding contacts for driving the rotor element; and optionally (i-e) a pole changer; (i-a) a fixed magnetic stator element; (i-b) a rotor element movably disposed in the stator element and consisting of an iron core and a rotor coil wound there around; and (i-c) a drive shaft which is rotatable mounted on which the rotor element is arranged; (i-d) a power supply with sliding contacts for driving the rotor element; and optionally (i-e) a pole changer; (ii) at least two cylinders, each containing therein (ii-a) at least one magnetic core (M1, M2, M3); (ii-b) at least one cylinder coil (X1, X2); (ii-c) a connecting rod (PO,PS,PU); (ii-d) a connecting rod; (ii-a) at least one magnetic core (M1, M2, M3); (ii-b) at least one cylinder coil (X1, X2); (ii-c) a connecting rod (PO,PS,PU); (ii-d) a connecting rod; (iii) a housing for containing the actuator and the cylinders, (a) the magnetic cores (M1, M2, M3) are arranged on the connecting rods (PO,PS,PU) and are movable within the cylinders (b) the at least one cylinder coil (X1, X2) being fixedly arranged in the cylinder; (c) the magnet cores (M1, M2, M3) are connected to the drive shaft via the connecting rods (PO, PS, PU); (d) the connecting rods are arranged in two opposite groups and these two groups are respectively connected to the drive shaft so as to form a "V" shape; wherein (e) the rotary motion of the drive shaft is converted via the connecting rods into a translational motion of the connecting rods (PO, PS, PU) and thus of the magnetic cores (M1, M2, M3) in the individual cylinders, and (f) the magnetic cores (M1, M2, M3) thereby regularly pass through the cylinder coils (X1, X2) arranged in the cylinder and thereby induce a magnetic field and generate electrical energy.