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US 8,261,713 B2Granted
Cranking device of an internal combustion engine
AssigneeRobert Bosch GmbH
InventorsRainer Stoeckl, Mathias Fein
Life of this patent
Estimating the term…
Abstract
A cranking device of an internal combustion engine includes an electric machine having a drive unit, which electric machine is in mechanical operative connection with a commutator by way of an armature shaft. A protective element is disposed in the region of the drive unit, particularly the stator and/or armature, in such a way that a separating effect is provided with respect to an operating region of the commutator.
Claims16
A cranking device for an internal combustion engine, comprising:
- a commutator;
- an armature shaft;
- an electric machine having a drive unit including a stator and an armature, wherein the electric machine is in mechanical operative connection with the commutator via the armature shaft;
- and
- a protective element distinct from a brush-accommodating chambers disposed in the region of the drive unit such that the protective element substantially separates an operating region of the commutator from the remaining region of the cranking device;
- wherein the protective element influences air flow or particle flow.
3 more elements
A cranking device of an internal combustion engine, comprising:
- an electric machine, which includes a drive unit and which is in mechanical operative connection with a commutator via an armature shaft;
- and
- a protective element distinct from a brush-accommodating chambers disposed in the region of the drive unit so that a separating effect is provided with regard to an operating region of the commutator, wherein the protective element is disposed one of:
- at the axial level of an armature bandage either on a housing or on the armature bandage, at the axial level of an extremity of the armature of the drive unit on a permanent magnet, in interspaces of the permanent magnet, and in the region of an end face of the armature bandage on the housing;
- wherein the protective element influences air flow or particle flow.
2 more elements
A start-stop system, comprising:
- a cranking device of an internal combustion engine, including:
- an electric machine, which includes a drive unit and which is in mechanical operative connection with a commutator via an armature shaft;
- and
- a protective element distinct from a brush-accommodating chambers disposed in the region of the drive unit so that a separating effect is provided with regard to an operating region of the commutator, wherein the protective element is disposed one of:
- at the axial level of an armature bandage either on a housing or on the armature bandage, at the axial level of an extremity of the armature of the drive unit on a permanent magnet, in interspaces of the permanent magnet, and in the region of an end face of the armature bandage on the housing;
- wherein the protective element influences air flow or particle flow.
3 more elements
Dependencies are inferred from the claim text.