LUBRICATION CONTROL DEVICE FOR IN-WHEEL MOTOR UNIT FOR VEHICLE

Title:

LUBRICATION CONTROL DEVICE FOR IN-WHEEL MOTOR UNIT FOR VEHICLE

Document Type and Number:

WIPO Patent Application WO/2012/140963

Kind Code:

A1

Abstract:

When the oil levels of right and left in-wheel motor units are different in a high vehicle speed range (VSP≥VSP1) in which the oil stirring resistance exceeds an acceptable level, the difference in oil stirring resistance between right and left wheels increases, and the travel stability of a vehicle deteriorates due to the large difference in driving force between the right and left wheels. Therefore, in the high vehicle speed range (VSP≥VSP1), oil pumps of the right and left in-wheel motor units are each driven and controlled such that the oil pumping quantity (Q) thereof maintains a constant flow quantity (Qconst) corresponding to the unit requirement oil quantity. Consequently, the right and left in-wheel motor units continue to maintain the same oil level, and the oil stirring resistances in the right and left in-wheel motor units become the same, thereby making it possible to avoid the deterioration of the travel stability without causing the difference in driving force between the right and left wheels.

Inventors:

YAMAUCHI YASUHIRO

Application Number:

PCT/JP2012/054866

Publication Date:

October 18, 2012

Filing Date:

February 28, 2012

Export Citation:

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Assignee:

NISSAN MOTOR (JP)
YAMAUCHI YASUHIRO

International Classes:

F16H57/04; B60K7/00; B60L11/18; H02K7/116

Foreign References:

JP2010249220A	2010-11-04
JP2010247657A	2010-11-04
JP2009241911A	2009-10-22
JP2001173762A	2001-06-26
JP2008195233A	2008-08-28

Other References: