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Patent Searching and Data


Title:
DETERMINATION OF A CLUTCH TEMPERATURE
Document Type and Number:
WIPO Patent Application WO/2015/131892
Kind Code:
A3
Abstract:
The invention relates to a hybrid drive comprising a first drive machine, which is coupled to a shaft by means of a clutch, and a second drive machine, which is rigidly coupled to the shaft. A method for determining a temperature of the clutch comprises steps of determining a temperature of the clutch, determining a temperature of a clutch housing, determining a temperature difference between the clutch and the clutch housing, determining a thermal conductivity between the clutch and the clutch housing, wherein the thermal conductivity is determined in dependence on a rotational speed of the first drive machine and a rotational speed of the second drive machine, determining a heat flow between the clutch and the clutch housing on the basis of a product of the thermal conductivity and the temperature difference, and adapting the determined clutch temperature on the basis of the determined heat flow.

Inventors:
LOKTEV DENIS (DE)
ROTTACH ARNIM-SEBASTIAN (DE)
VORNEHM MARTIN (DE)
Application Number:
DE2015/200085
Publication Date:
March 17, 2016
Filing Date:
February 20, 2015
Export Citation:
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Assignee:
SCHAEFFLER TECHNOLOGIES AG (DE)
International Classes:
F16D48/06
Foreign References:
US20120290249A12012-11-15
FR2878619A12006-06-02
DE102005026615A12006-12-14
JP2012153230A2012-08-16
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