ELECTRIC OIL PUMP CONTROLLER - TOYOTA MOTOR CO LTD

Title:

ELECTRIC OIL PUMP CONTROLLER

Document Type and Number:

WIPO Patent Application WO/2002/020991

Kind Code:

A1

Abstract:

An electric oil pump controller capable of prolong the service life and avoiding the increase of the size of an electric oil pump used as an auxiliary pump for a main pump by suppressing the deterioration thereof, wherein the electric oil pump (40) is operated for only a specified allowable operating time, and an engine (12) is started to supply a hydraulic pressure by a mechanical oil pump (36), whereby the continuous operating time of the electric oil pump (40) can be limited, the service life can be increased, and the increase of the size can be avoided by suppressing the deterioration of the electric oil pump (40).

Inventors:

TABATA ATSUSHI (JP)
TOMOHIRO TADASU (JP)
HOJO YASUO (JP)
TOMOMATSU HIDEO (JP)
TANAKA YOSHIKAZU (JP)
NAKATANI KATSUMI (JP)
MATSUBARA TOORU (JP)

Application Number:

PCT/JP2001/007635

Publication Date:

March 14, 2002

Filing Date:

September 04, 2001

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
TABATA ATSUSHI (JP)
TOMOHIRO TADASU (JP)
HOJO YASUO (JP)
TOMOMATSU HIDEO (JP)
TANAKA YOSHIKAZU (JP)
NAKATANI KATSUMI (JP)
MATSUBARA TOORU (JP)

International Classes:

F04B17/05; F04B49/00; F04B49/02; F04B49/06; F04B49/10; F02D29/02; F16H61/00; (IPC1-7): F04B49/02; F04B49/10; F04B17/00; F02D29/02; F02D17/04

Foreign References:

JPH11147424A	1999-06-02
JP2000227150A	2000-08-15
JP2000199561A	2000-07-18
JPS5276702A	1977-06-28
JP2001193661A	2001-07-17
JP2000046166A	2000-02-18
JP2000227150A	2000-08-15
JP2000199561A	2000-07-18

Other References: