Title:
FLUID PUMP FOR SHIP AND METHOD FOR CONTROLLING SAME
Document Type and Number:
WIPO Patent Application WO/2019/167708
Kind Code:
A1
Abstract:
A fluid pump for a ship, which is one aspect of the present invention, comprises a pump body that pressurizes and discharges a fluid by moving a piston in which pressure of hydraulic oil is used, a detection unit that detects a maximum movement amount of the piston in one fluid discharge, a control valve that selectively switches between an ON state in which hydraulic oil is supplied to the pump body and an OFF state in which the supply of hydraulic oil is stopped, and a control unit. The control unit derives a target movement amount of the piston in accordance with a fluid discharge amount required in one fluid discharge. On the basis of the difference between the target movement amount in the current fluid discharge and the maximum movement amount in the previous fluid discharge, the control unit calculates a time correction value for a valve ON time of the control valve, adds this time correction value to correct the valve ON time during the current fluid discharge, and controls the control valve so that the valve continues to be in an ON state for the corrected valve ON time.
Inventors:
KAKIMOTO TAI (JP)
IZUMI MOTOKI (JP)
IZUMI MOTOKI (JP)
Application Number:
PCT/JP2019/005958
Publication Date:
September 06, 2019
Filing Date:
February 19, 2019
Export Citation:
Assignee:
JAPAN ENGINE CORP (JP)
International Classes:
F02M47/00; F02D19/12; F02D41/38; F02D41/40; F04B9/103
Foreign References:
| JP2000356156A | 2000-12-26 | |||
| JP2009085074A | 2009-04-23 | |||
| JP2010103315A | 2010-05-06 | |||
| JP2013142299A | 2013-07-22 | |||
| JP2012002179A | 2012-01-05 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
Download PDF: