Marine fuel oil common rail

A technology of fuel oil and common rail, which is applied in the direction of fuel injection devices, engine components, machines/engines, etc. It can solve the problems of common rail processing difficulty and installation difficulty, and achieve the effect of reducing manufacturing difficulty and manufacturing cost and reducing environmental pollution

Pending Publication Date: 2019-03-01
CHONGQING HONGJIANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a common rail for marine fuel oil to solve the problems of difficult processing and difficult installation of the common rail in the prior art

Method used

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  • Marine fuel oil common rail
  • Marine fuel oil common rail
  • Marine fuel oil common rail

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Embodiment Construction

[0033] refer to Figure 1 to Figure 4 , the present invention provides a marine fuel oil common rail, each engine block corresponds to a common rail, the common rail includes: a common rail pipe body 1, which has a fuel chamber communicated with a high-pressure oil inlet pipe 10, the The common rail pipe body 1 is provided with a mounting hole; the restrictor valve 2 used to communicate with the fuel injector is partially inserted in the mounting hole and communicated to the fuel chamber through the first pipeline 3; A first gap 21 for fuel to pass is formed between the restrictor valve 2 and the installation hole; a first fuel return pipeline 4 is formed on the common rail pipe body 1, and the first fuel return pipeline 4. One end is connected to the high-pressure fuel inlet pipe 10, and the other end is connected to the first gap 21; wherein, the fuel in the fuel tank enters the fuel chamber through the high-pressure fuel inlet pipe 10 and passes through the restrictor valve...

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PUM

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Abstract

The invention relates to a marine fuel oil common rail. The problems that in the prior art, the common rail is large in machining difficulty, and mounting is difficult are solved. Each engine cylinderbody corresponds to one common rail. The common rail comprises a common rail pipe body, a flow limiting valve and a first fuel oil backflow pipeline; the common rail pipe body is provided with a fueloil cavity communicating with a high-pressure oil inlet pipe, and a mounting hole is formed in the common rail pipe body; the flow limiting valve is used for communicating with an oil atomizer, a part of the flow limiting vale is inserted in the mounting hole, the flow limiting valve communicates to a fuel oil cavity through a first pipeline, a first gap allowing fuel oil to pass through is formed between the flow limiting valve and the mounting hole, the first fuel oil backflow pipeline is formed on the common rail pipe body, one end of the first fuel oil backflow pipeline communicates witha high-pressure oil inlet pipe, the other end of the first fuel oil backflow pipeline communicates with the first gap, fuel oil in the oil tank enters the fuel oil cavity through the high-pressure oilinlet pipe, and flows into oil atomizer to be atomized through the flow limiting valve, and the fuel oil entering the first pipeline is partially leaked to the first fuel oil backflow pipeline through the first gap, and flows back to the high-pressure oil inlet pipe through the first fuel oil backflow pipeline.

Description

technical field [0001] The invention relates to the technical field of diesel engines, in particular to a marine fuel oil common rail. Background technique [0002] The increasingly serious energy crisis has become the focus of attention of the internal combustion engine industry around the world, and it has also made diesel engines more and more popular with users. The common rail injection system refers to a closed-loop system composed of a high-pressure oil pump, a pressure sensor and an ECU. A separate fuel supply method, the high-pressure fuel pump delivers high-pressure fuel to the common rail, and through precise control of the oil pressure of the common rail, the fuel pressure in the rail has nothing to do with the engine speed, which can be greatly reduced The phenomenon that the fuel supply pressure of the diesel engine changes with the engine speed can better ensure the consistency of fuel injection. At present, the common rail of the low-speed machine mostly ado...

Claims

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Application Information

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IPC IPC(8): F02M55/00F02M55/02
CPCF02M55/002F02M55/025
Inventor 刘惠娥涂天华张重李亚洲
Owner CHONGQING HONGJIANG MACHINERY
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