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Fuel injection pumps, fuel injection devices, internal combustion engines

A fuel injection pump and fuel injection valve technology, which is applied to fuel injection devices, fuel injection pumps, charging systems, etc., can solve problems such as poor plunger action and bite, and achieve the effect of suppressing poor action.

Active Publication Date: 2021-05-14
MITSUBISHI HEAVY IND LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, if lubricating oil adheres to the outer peripheral surface of the plunger, the adhering lubricating oil will bite into the gap between the plunger barrel and the plunger, causing malfunction of the plunger.

Method used

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  • Fuel injection pumps, fuel injection devices, internal combustion engines
  • Fuel injection pumps, fuel injection devices, internal combustion engines
  • Fuel injection pumps, fuel injection devices, internal combustion engines

Examples

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Embodiment Construction

[0036] Preferred embodiments of a fuel injection pump, a fuel injection device, and an internal combustion engine according to the present invention will be described in detail below with reference to the drawings. In addition, this embodiment does not limit this invention, and when there are several embodiments, the embodiment which combined each embodiment is also included.

[0037] Image 6 is a schematic configuration diagram showing a fuel injection device according to the present embodiment.

[0038] In this embodiment, if Image 6 As shown, the fuel injection device 10 is mounted on a large marine diesel engine (internal combustion engine) mounted on a ship. The fuel injection device 10 includes a fuel injection valve 11 , a fuel injection pump 12 , and an accumulation control valve block 13 .

[0039] The fuel injection valve 11 injects fuel (C heavy oil) into a combustion chamber of a diesel engine (not shown). A fuel injection pump 12 pressure-feeds fuel to the f...

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PUM

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Abstract

In a fuel injection pump, a fuel injection device, and an internal combustion engine, a pump casing (21), a plunger barrel (22) arranged in the pump casing (21), and a plunger barrel (22) supported freely in the axial direction are provided. The plunger (23) in 22), the lubricating oil supply passage (81) that supplies lubricating oil (fuel) between the plunger barrel (22) and the plunger (23), and the plunger (23) that is concavely arranged ) in the lubricating oil reservoirs (91, 96) at positions exposed from the plunger barrel (22).

Description

technical field [0001] The present invention relates to a fuel injection pump used in an internal combustion engine mounted on a ship, a fuel injection device using the fuel injection pump, and an internal combustion engine using the fuel injection device. Background technique [0002] A fuel injection device for an internal combustion engine mounted on a ship includes a fuel injection valve that injects fuel into the combustion chamber, a fuel injection pump that pressure-feeds fuel to the fuel injection valve, and a pressure accumulator that controls the movement of the plunger. Control valve block. Furthermore, the fuel injection pump includes a pump housing, a plunger cylinder, a plunger, a suction valve, and a discharge valve. Such a fuel injection pump is described, for example, in Patent Document 1 below. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent No. 4991359 [0006] The problem to be solved by the inventi...

Claims

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Application Information

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IPC IPC(8): F02M59/44F02M59/26
CPCF02M59/26F02M59/44F02M63/0001
Inventor 木下芳彦江户浩二平林浩彰
Owner MITSUBISHI HEAVY IND LTD
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