Electromagnetic switch for a starting device
AssigneeMahle International GmbH
InventorDejan Manfreda
Life of this patent
Estimating the term…
Abstract
An electromagnetic switch for a starting device of an internal combustion engine may include a coil carrier, a coil winding, and a piston. The coil carrier may have a carrier wall which encloses a cavity. The coil winding may have a coil wire wound on a side of the carrier wall facing away from the cavity which provides a magnetic field within the cavity. The piston may be axially adjustable in the cavity. The piston may be disposed in a passive position and may be adjusted axially in a direction of a core. In the passive position, the piston and the core may define an axial gap therebetween in the cavity. The coil wire may have a first winding section and a second winding section wound in opposing directions. At least one winding of the second winding section may axially overlap the axial gap.
Claims20
An electromagnetic switch for a starting device of an internal combustion engine, comprising:
- a coil carrier having a carrier wall which extends in an axial direction and which encloses a cavity in the coil carrier;
- a coil winding having a coil wire wound on a side of the carrier wall facing away from the cavity and which, during operation, is flowed through by an electrical current and provides a magnetic field within the cavity;
- a piston which is axially adjustable in the cavity and, when the coil winding is not in operation, is disposed in a passive position and, during operation of the coil winding, is adjusted axially in a direction of a core;
- in the passive position of the piston, the piston and the core defining an axial gap therebetween in the cavity;
- the coil wire, in an axially extending first winding section, wound in a first winding direction around the carrier wall;
- the coil wire, in an axially extending second winding section, wound in a second winding direction opposite the first winding direction around the carrier wall;
- and
- wherein at least one winding of the second winding section axially overlaps the axial gap.
A starting device for starting an internal combustion engine, comprising:
- a starting element which, for starting of the internal combustion engine, engages with a counterpart starting element of the internal combustion engine;
- an electromagnetic switch including:
- a coil carrier having a carrier wall which extends in an axial direction and which encloses a cavity in the coil carrier;
- a coil winding having a coil wire wound on a side of the carrier wall facing away from the cavity and which, during operation, is flowed through by an electrical current and provides a magnetic field within the cavity;
- a piston which is axially adjustable in the cavity and, when the coil winding is not in operation, is disposed in a passive position and, during operation of the coil winding, is adjusted axially in a direction of a core;
- the piston and the core defining an axial gap therebetween in the cavity when in the passive position of the piston;
- the coil wire, in an axially extending first winding section, wound in a first winding direction around the carrier wall;
- the coil wire, in an axially extending second winding section, wound in a second winding direction opposite the first winding direction around the carrier wall;
- and
- at least one winding of the second winding section axially overlapping the axial gap;
- wherein the piston is connected to the starting element such that the piston, during the axial adjustment in the direction of the core, adjusts the starting element in the direction of the counterpart starting element.
An electromagnetic switch for a starting device of an internal combustion engine, comprising:
- a coil carrier having a carrier wall which extends in an axial direction and which encloses a cavity in the coil carrier;
- a coil winding having a coil wire wound on a side of the carrier wall facing away from the cavity and which, during operation, is flowed through by an electrical current and provides a magnetic field within the cavity;
- a piston which is axially adjustable in the cavity and, when the coil winding is not in operation, is disposed in a passive position and, during operation of the coil winding, is adjusted axially in a direction of a core;
- in the passive position of the piston, the piston and the core defining an axial gap therebetween in the cavity;
- the coil wire, in an axially extending first winding section, wound in a first winding direction around the carrier wall;
- the coil wire, in an axially extending second winding section, wound in a second winding direction opposite the first winding direction around the carrier wall;
- wherein at least one winding of the second winding section axially overlaps the axial gap;
- and
- wherein a side of the at least one winding facing radially toward the axial gap, which axially overlaps the axial gap, is free from the coil wire.
Dependencies are inferred from the claim text.