Hydraulic pressure control apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8727453
APP PUB NO 20110221264A1
SERIAL NO

13044853

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Importance

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Abstract

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A hydraulic pressure control apparatus has an electromagnetic valve having a valve body forced to one side by an elastic member and a coil driving the valve body to the other side; a hydraulic pressure control section for calculating a command current value to drive the electromagnetic valve and controlling a hydraulic pressure in a hydraulic circuit by opening/closing the electromagnetic valve; a current detection section detecting a value of the current passing through the coil; and a command current value correction section. The command current value correction section detects a change of an inductance of the coil when the valve body moves from the one side to the other side or from the other side to the one side through the current detection section, and corrects the command current value using the detected inductance change.

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Patent Owner(s)

Patent OwnerAddress
HITACHI AUTOMOTIVE SYSTEMS LTD2520 TAKABA HITACHINAKA-SHI IBARAKI

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Doi, Satoshi Atsugi, JP 33 285
Imamura, Masamichi Atsugi, JP 14 190
Nishida, Shinichiro Zama, JP 7 83
Saita, Norihiro Atsugi, JP 22 116
Shibata, Taichi Atsugi, JP 2 10
Yokota, Tadaharu Atsugi, JP 25 188

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