OPERATING METHOD FOR ON-VEHICLE ELECTRIC MOTOR

Title:

OPERATING METHOD FOR ON-VEHICLE ELECTRIC MOTOR

Document Type and Number:

WIPO Patent Application WO/2005/031193

Kind Code:

A1

Abstract:

An operating method for an on-vehicle electric motor (7) driving an auxiliary oil pump (8) for supplying the hydraulic pressure of ATF to a transmission through a rotating shaft (9) pivotally supported on ball bearings (10) and (11) only when the idling of an engine is stopped. When an automobile is running and the auxiliary oil pump (8) are not in use, the electric motor (7) is rotated at a very low speed or intermittently rotated. By this, the electric motor can be drivingly rotated slightly in the traveling of the automobile to prevent dents from occurring in the ball bearings. This operating method can be applied not only to the operating method for the electric motor driving the auxiliary oil pump but also to an operating method for an on-vehicle electric motor driving driven devices such as a wiper and a power window through a rotating shaft pivotally supported on rolling bearings.

Inventors:

SAKATA TAKATOSHI (JP)
YUKITAKE YASUHIRO (JP)
ASAI YASUO (JP)
YOSHINAMI KOUJI (JP)

Application Number:

PCT/JP2004/013778

Publication Date:

April 07, 2005

Filing Date:

September 22, 2004

Export Citation:

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Assignee:

KOYO SEIKO CO (JP)
SAKATA TAKATOSHI (JP)
YUKITAKE YASUHIRO (JP)
ASAI YASUO (JP)
YOSHINAMI KOUJI (JP)

International Classes:

F16H61/00; (IPC1-7): F16H61/00; B60J1/12; B60S1/08

Foreign References:

JP2000296720A	2000-10-24
JP2004084742A	2004-03-18
JP2001317623A	2001-11-16
JP2002213594A	2002-07-31

Other References: