Abstract: An electric machine includes a rotor and a stator having a plurality of windings. The rotor is configured to rotate about a rotational axis and includes a plurality of permanent magnets arranged on a circumference of the rotor. A magnetically non-effective zone is created in a central region of the rotor. A least one opening extends substantially in an axial direction in the magnetically non-effective zone of the rotor to form an air flow path through the rotor. A fan is configured to move with the rotor to generate an air flow along the air flow path through the at least one opening of the rotor.

Abstract: A fan module, particularly for cooling motor vehicle engines allows for improved cooling of the fan motor. The fan housing (101) in which the fan motor (105) is arranged has fixed air-channeling elements (109) which are arranged in the region of a fan hub (2) of the fan wheel (1) driven by the fan motor (105) and which only partially cover an outlet cross section (102, 118) defined by the fan housing (101).

Abstract: A cooling fan (1) for a motor vehicle has a fan wheel (4) and a brushless fan motor (2) which is used to drive the fan wheel (4). The fan motor (2) has an internal rotor (3). The fan wheel (4) is directly connected to the internal rotor (3) in order to reduce the size of the type of cooling fan (1) whilst retaining the power output.

Abstract: An electromotor has an external stator, and a ventilator vessel which is used to produce a cooling air flow for self-ventilation of the electromotor. In order to improve the cooling of an electromotors, it is proposed to use a ventilator vessel to help direct an air flow along the outer surface of the motor housing, through the inside of the housing of the electromotor and through an air gap formed between the motor housing wall and ventilator vessel.

Abstract: A fan module, particularly for cooling motor vehicle engines allows for improved cooling of the fan motor. The fan housing (101) in which the fan motor (105) is arranged has fixed air-channeling elements (109) which are arranged in the region of a fan hub (2) of the fan wheel (1) driven by the fan motor (105) and which only partially cover an outlet cross section (102, 118) defined by the fan housing (101).

Abstract: A cooling fan module for a motor vehicle. has a first fan motor which is used to drive a first cooling fan and a second fan motor which is used to drive a second cooling fan. A control unit (6, 13) is associated with the first fan motor (2, 11), which operates the first fan motor (2, 11) and the second fan motor (4, 12, 23) simultaneously, in order to provide an economical and compact technical solution for the cooling fan.

Abstract: A cooling fan (1) for a motor vehicle has a fan wheel (4) and a brushless fan motor (2) which is used to drive the fan wheel (4). The fan motor (2) has an internal rotor (3). The fan wheel (4) is directly connected to the internal rotor (3) in order to reduce the size of the type of cooling fan (1) whilst retaining the power output.

Abstract: A cooling fan module for a motor vehicle has a first fan motor which is used to drive a first cooling fan and a second fan motor which is used to drive a second cooling fan. A control unit (6, 13) is associated with the first fan motor (2, 11), which operates the first fan motor (2, 11) and the second fan motor (4, 12, 23) simultaneously, in order to provide an economical and compact technical solution for the cooling fan.

Abstract: An electric machine has a rotor and a stator as well as a method for cooling such a machine. In order to improve cooling of an electric machine, the electric machine (18) has a rotor (2) that is excited by permanent magnets, a stator (38), magnets (3) which are arranged along the circumferential line of the rotor (2) in such a way that a magnetically non-effective zone (10) is created around the center of the rotor (2), at least one opening (11) in the magnetically non-effective zone (10) of the rotor (2) in order to embody an air flow path (41) through the rotor (2), the opening (11) extending substantially in an axial direction, and a fan (15, 56, 58, 59) which moves along with the rotor (2) and is used for embodying an air flow through the opening (11) of the rotor (2).

Abstract: An electromotor has an external stator, and a ventilator vessel which is used to produce a cooling air flow for self-ventilation of the electromotor. In order to improve the cooling of an electromotors, it is proposed to use a ventilator vessel to help direct an air flow along the outer surface of the motor housing, through the inside of the housing of the electromotor and through an air gap formed between the motor housing wall and ventilator vessel.

Abstract: The invention relates to a cooling fan for use in a motor vehicle. To achieve improved cooling of an electric motor it is proposed that the motor housing enclosing the electric motor be used as a heat sink for emitting waste heat into a cooling air flow. The cooling air flow for cooling the electric motor is routed here through the interior of the motor housing and subsequently along the outside of the motor housing over cooling elements in the areas of the air inlet openings and in the area or an air exit gap between fan wheel hub and front part of the motor housing. The cooling air flow is created in this case by the fan wheel hub of the fan wheel driven by the electric motor.

Abstract: The invention relates to a cooling fan for use in a motor vehicle. To achieve improved cooling of an electric motor it is proposed that the motor housing enclosing the electric motor be used as a heat sink for emitting waste heat into a cooling air flow. The cooling air flow for cooling the electric motor is routed here through the interior of the motor housing and subsequently along the outside of the motor housing over cooling elements in the areas of the air inlet openings and in the area or an air exit gap between fan wheel hub and front part of the motor housing. The cooling air flow is created in this case by the fan wheel hub of the fan wheel driven by the electric motor.

Abstract: The invention relates to a stator for an electric motor. Said stator has an annular stator package having a plurality of stator teeth. An annular interconnection unit is located on the end face of said stator package. Said annular interconnection contains diverting elements. The interconnection unit has a support component which is provided with a cavity and has slots. Provided in said cavity are a multiplicity of mutually electrically insulated connector rings each having contacting elements routed externally through said slots.

Abstract: The invention relates to a stator for an electric motor. Said stator has an annular stator package having a plurality of stator teeth. An annular interconnection unit is located on the end face of said stator package. Said annular interconnection contains diverting elements. The interconnection unit has a support component which is provided with a cavity and has slots. Provided in said cavity are a multiplicity of mutually electrically insulated connector rings each having contacting elements routed externally through said slots.

Abstract: In an electric motor, a Hall sensor (3) is arranged in the vicinity of the outer circumference of the rotor (2) and of at least one of the permanent magnets (4-7) provided for operationally exciting the electric motor. At least one of the permanent magnets (4-7) is provided for generating the magnetic field inducing the Hall sensor (3). The rotor (2) has rotor teeth (2.1) and/or rotor slots (2.2) on the air-gap side and, in operation, produces magnetic field pulsations in proportion to the rotor speed.

Abstract: A geared motor actuator having a simplified mechanical structure for driving a closing part, such as a vehicle window, moved as far as at least one end position by an electric motor (MO) via a gear (G), preferably a worm gear. Shortly before the end position is reached, switch-off of the electric motor (MO) is performed in accordance with a control device (ST). The gear (G) is drive-connected to an output driver of the closing part without any damping means. The worm wheel (4) of the worm gear, being a solid, integral component that is preferably injection-molded from plastic, is preferably designed to include the output driver as part of the integral component, and provided with a drive pinion (4.1).

Abstract: An actuator is provided to protect against pinching an object when closing powered automatic windows or sun roofs in motor vehicles in compliance with safety requirements. The displacement speed of the actuator is reduced as a function of the path location of the window or sun roof so that the total force including the stored kinetic energy of the entire drive system in the approach of the window or sun roof panel to an obstacle does not exceed the maximum allowed closing force.