Patent · US Expired

Electric machine, especially a generator for motor vehicles

US6900561B2 · kind B2 · utility

16Cited by

2References

17Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Johannes Vlemmings · Weil der Stadt, DE
Manfred Schmitt · Munich, DE
Karsten Mann · Stuttgart, DE
Oliver Kaefer · Murr, DE

Key dates

Filing date	Jun 20, 2002
Grant date	May 31, 2005
Priority date	—
Expiry date	Jun 20, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02K5/203
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electric machine, particularly a generator for motor vehicles, includes a housing and a casing enclosing the housing concentrically, the casing, together with the housing, bounding an annular space that is sealed in a fluid-tight manner and is connected to a coolant outflow and a coolant inflow. To achieve a uniform circumflow of the housing with sufficient cooling capacity, even given low volumetric flow of the coolant, a plurality of axial guide bars are arranged in the annular space, so that the coolant restrictedly flows in an axially wide-strip manner through the annular space within space segments arranged in a row in the circumferential direction, with an opposing flow direction in successive space segments.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.