TRIPLE GEAR PUMP AND FLUID SUPPLY DEVICE

Japanese Patent JP2015194134

A

PROBLEM TO BE SOLVED: To apply an appropriate pressing force in an opposite direction to a floating bearing of a triple gear pump even if a floating force generated in the floating bearing of the triple gear pump changes with a change in a connection state of first and second gear pumps.SOLUTION: In a connection state in which a first gear pump 11 and a second gear pump 13 are connected in parallel, a low-pressure receiving surface 15d and a switched-pressure receiving surface 15e of a floating bearing 15a serve as a receiving surface for receiving a non-boosted fuel pressure (low pressure) and only a high-pressure receiving surface 15c serves as a boosted-fuel-pressure (high-pressure) receiving surface. In a connection state in which the first gear pump 11 and the second gear pump 13 are connected in series, only the low-pressure receiving surface 15d serves as the low-pressure receiving surface and the high-pressure receiving surface 15c and the switched-pressure receiving surface 15e serve as the high-pressure receiving surface. In this way, area rates of the low-pressure receiving surface and the high-pressure receiving surface are changed depending on the connection state of the first gear pump 11 and the second gear pump 13, and a pressing force Fp in an opposite direction is changed depending on a change in a floating force Ff generated in the floating bearing 15a of a drive gear 5.

JP2013044321	GEAR PUMP
JPS602518	[Title of the Invention] Rotary vane pump

TAKAMIYA KENJI
MASUDA AKITOSHI

JP2014072590A

November 05, 2015

March 31, 2014

Click for automatic bibliography generation  

IHI CORP

F04C15/00; F04C2/18; F04C11/00

JP2003328958A	2003-11-19
JP2002303160A	2002-10-18
JPS4716424Y1	1972-06-09
JP2008050979A	2008-03-06
JPS3610585B1

Hidekazu Miyoshi
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu

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