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Fuel injector of a dual-fuel combustion engine and dual-fuel combustion engine

A technology of internal combustion engine and fuel injector, which is applied in the direction of internal combustion piston engine, combustion engine, fuel injection device, etc., to achieve the effect of simple structure

Pending Publication Date: 2021-12-28
MAN ENERGY SOLUTIONS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there is a separate sealing and lubricating oil system

Method used

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  • Fuel injector of a dual-fuel combustion engine and dual-fuel combustion engine
  • Fuel injector of a dual-fuel combustion engine and dual-fuel combustion engine
  • Fuel injector of a dual-fuel combustion engine and dual-fuel combustion engine

Examples

Experimental program
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Embodiment Construction

[0018] figure 1 Shown in a highly schematic manner is a marine propulsion system 10 comprising a dual fuel internal combustion engine 11 having a plurality of cylinders 12 .

[0019] In the cylinder 12, the fuel is combusted, that is, in the first operating mode of the dual-fuel internal combustion engine 11, the first liquid fuel is combusted, and in the second operating mode of the dual-fuel internal combustion engine 11, the second liquid fuel is combusted. Fuel burns. During the combustion of the corresponding fuel, the dual-fuel internal combustion engine 11 generates drive power, which is figure 1 Utilized in order to drive the generator 13. In the generator 13 , electrical energy for driving the propeller 14 of the ship is generated.

[0020] also, figure 1 A fuel supply system 15 of a dual fuel internal combustion engine 11 is shown. figure 2 , image 3 Additional components of fuel supply system 15 are shown. By means of the fuel supply system 15 a correspondi...

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PUM

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Abstract

The invention relates to a fuel injector of a dual-fuel internal combustion engine and the dual-fuel internal combustion engine. The fuel injector of the dual-fuel internal combustion engine is designed to supply fuel to a combustion chamber of a cylinder of the dual-fuel internal combustion engine, has a body, has a nozzle needle movably guided in a needle guide of the body, and has a needle fuel chamber defined by the body that can be coupled to the combustion chamber of the cylinder via an orifice, wherein the orifice is open in a first position of the nozzle needle and closed in a second position of the nozzle needle, wherein a first line coupled to the needle fuel chamber is introduced into the body, wherein fuel can be introduced into the needle fuel chamber via the first line, wherein a second line separate from the first line is introduced into the body, and the second line is closed in a second position of the nozzle needle, and wherein the fuel may be supplied to the needle guide as a barrier fluid and to the control chamber as a working fluid via the second line.

Description

technical field [0001] The invention relates to a fuel injector for a dual fuel internal combustion engine. Furthermore, the invention relates to a dual fuel internal combustion engine. [0002] The invention presented here relates in particular to the field of so-called large engines or large internal combustion engines whose cylinders have a piston diameter of at least 140 mm, in particular at least 175 mm. Such large internal combustion engines are eg marine engines. Background technique [0003] Dual fuel internal combustion engines are already known as marine engines. Dual-fuel internal combustion engines known from practice can be operated in a first operating mode in which the dual-fuel internal combustion engine combusts a liquid fuel and in a second operating mode in which the dual-fuel internal combustion engine combusts a gaseous fuel or another liquid fuel. [0004] A dual-fuel internal combustion engine with dual-fuel injectors is known from DE 10 2017 123 31...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M43/04F02M61/10F02M61/20
CPCF02M43/04F02M61/10F02M61/20F02M45/08F02M45/04F02M47/027F02D19/0649F02D19/0694F02D19/081F02D19/0655Y02T10/30F02D19/061F02D19/0684F02D41/0025F02D19/0689F02M37/0023F02M37/0088F02M37/04
Inventor J·维洛卡
Owner MAN ENERGY SOLUTIONS SA