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Hydraulic device, internal combustion engine, and ship

A technology of hydraulic device and internal combustion engine, applied in the field of hydraulic drive part and hydraulic device, can solve the problems of reduced pump efficiency, low energy efficiency of engines and ships, and small discharge volume, etc.

Inactive Publication Date: 2017-09-26
MITSUBISHI HEAVY IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] On the other hand, generally speaking, if the discharge volume of each auxiliary pump is reduced, the pump efficiency tends to decrease
Therefore, in the current electronically controlled marine diesel engine, the lower the engine load, the lower the efficiency of the auxiliary pump is, and the energy efficiency of the engine and the ship as a whole is low.

Method used

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  • Hydraulic device, internal combustion engine, and ship
  • Hydraulic device, internal combustion engine, and ship
  • Hydraulic device, internal combustion engine, and ship

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Embodiment Construction

[0047]Hereinafter, embodiments according to the present invention will be described in detail based on the drawings. In addition, this invention is not limited by this embodiment. In addition, the constituent elements of the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

[0048] figure 1 It is a schematic side view of a ship to which the hydraulic system according to this embodiment is applied.

[0049] The ship of this embodiment has a hull 10 . The hull 10 includes a bow 11 , a stern 12 , a bottom 13 , and a side 14 . WL represents the waterline of the hull 10 (at full load). The hull 10 is divided into an engine compartment 17 by a bulkhead 16 on the side of the stern 12 . Furthermore, an internal combustion engine (diesel engine) 18 serving as a main engine is arranged in the nacelle room 17 . The internal combustion engine 18 is connected to a propeller 19 that transmits propuls...

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Abstract

The present invention uses a highly efficient region of an auxiliary motor pump. The present invention is provided with multiple auxiliary motor pumps (41) for accumulating pressure and operating using the motive force of an internal combustion engine (18), a hydraulic drive unit (54) driven by the hydraulic pressure accumulated by the auxiliary motor pumps (41), and a clutch (44) for stopping or operating the auxiliary motor pumps (41) according to the load state of the internal combustion engine (18) so as to decrease the number of operating auxiliary motor pumps (41) when below a prescribed load, and increasing the number of operating auxiliary motor pumps (41) when above the prescribed load.

Description

technical field [0001] The present invention relates to a hydraulic device, an internal combustion engine, and a ship that drive a hydraulic drive unit such as a fuel pump and an actuator for driving an exhaust valve by hydraulic pressure accumulated by a plurality of auxiliary pumps when the internal combustion engine is driven. Background technique [0002] In a marine diesel engine as an internal combustion engine, especially an electronically controlled engine, the fuel pump as a hydraulic drive unit and the lower valve device (actuator) for driving the exhaust valve pass the hydraulic pressure of the working oil accumulated by the auxiliary pump. And solenoid valve to control. Such a marine diesel engine is provided with a plurality of auxiliary pumps in order to increase redundancy when the auxiliary pump is damaged (for example, refer to Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Applicati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/00
CPCF04B49/00F04B17/05F04B23/10F04B49/02F04B49/06F04B2207/01F05B2210/11F15B11/02H02K7/14Y10S417/00
Inventor 村田聪
Owner MITSUBISHI HEAVY IND LTD