POWER TRANSMISSION CONTROL DEVICE

Japanese Patent JP2017008957

A

PROBLEM TO BE SOLVED: To curb shock generated when an engagement device is engaged with hydraulic pressure, the pressure as a source for control pressure of the engagement device, produced solely by an electric oil pump while a vehicle is traveling.SOLUTION: When determining a decline of line pressure PL which is pressure as a source for C1 pressure Pc1 supplied to a first clutch C1, a power transmission control device curbs a hydraulic pressure supply amount to the first clutch C1 by reducing the C1 pressure Pc1. Also, by reducing the C1 pressure Pc1 necessary for engaging the first clutch C1, the power transmission control device enables the C1 pressure Pc1 to be secured without increasing a discharge flow rate of an electric oil pump 74. The power transmission control device can avoid or curb abrupt engagement of the first clutch C1 caused by transition from a state with the C1 pressure Pc1 necessary for engaging the first clutch C1 unsecured to a state with the same secured during engagement operation of the first clutch C1. Thus, the power transmission control device can curb shock generated when the first clutch C1 is engaged with hydraulic pressure as the source for the C1 pressure Pc1 of the first clutch C1 produced solely by an electric oil pump 74 while a vehicle is traveling.SELECTED DRAWING: Figure 5

KIMURA MOTONOBU
ITO AKIHIDE
SAKAMOTO KAZUYA
KONDO HIROKI
FUKAO MITSUHIRO
ISHIIZUMI KAZUYA

JP2015121578A

January 12, 2017

June 16, 2015

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TOYOTA MOTOR CORP

F16H61/04; F16H59/40; F16H61/02; F16H61/662; F16H63/50

JP2011218835A	2011-11-04
JP2013007361A	2013-01-10

US20110144846A1

2011-06-16

Haruyuki Ikeda
Kojiro Ikeda

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