CONTROL DEVICE FOR VEHICLE DRIVE DEVICE

WIPO Patent Application WO/2014/102983

A1

Provided is a control device for a vehicle drive device, with which the size of a surge absorption circuit that absorbs surges occurring during operation of an electromagnetic oil pump can be reduced. The drive frequency (F) that operates an electromagnetic oil pump (86) is set so as to be lower when the oil temperature (Toil) is low than when the oil temperature is high. By means of this setting the discharge volume of the electromagnetic oil pump (86) decreases when the oil temperature (Toil) is low, but the amount of leakage of the working oil is less, so the required flow volume can be ensured. In addition, when the oil temperature is low the surge absorption power (W) is smaller, so the size of the surge absorption circuit can be reduced. Conversely, when the oil temperature is high the amount of leakage is greater, so the drive frequency (F) is increased and the discharge volume of the electromagnetic oil pump (86) increases, but when the oil temperature is high the viscosity resistance of the working oil is less and the solenoid current (I) is lower than when the oil temperature is low, so the size of the surge absorption circuit can be reduced.

MIZUNO YASUHIDE (JP)
ITO SHINICHI (JP)
KUBONOYA HIDEKI (JP)

PCT/JP2012/083955

July 03, 2014

December 27, 2012

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TOYOTA MOTOR CO LTD (JP)
MIZUNO YASUHIDE (JP)
ITO SHINICHI (JP)
KUBONOYA HIDEKI (JP)

F04B49/06; F04B49/10; F16H61/02

WO2012111096A1

2012-08-23

JP2001248468A	2001-09-14
JP2005214216A	2005-08-11
JP2003065221A	2003-03-05
JP2008133866A	2008-06-12

IKEDA Haruyuki et al. (JP)
Haruyuki Ikeda (JP)

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