Dual-fuel injector and ship

An injector and dual-fuel technology, applied in fuel injection devices, charging systems, combustion engines, etc., can solve problems such as large installation space, lower cylinder head strength, complex engine structure, etc., and achieve the goal of simplifying the structure and optimizing the structure layout Effect

Pending Publication Date: 2022-03-04
CSSC POWER INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are two separate injection systems for natural gas and diesel in a conventional dual-fuel engine, which leads to a relatively complicated structure of the engine,

Method used

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  • Dual-fuel injector and ship
  • Dual-fuel injector and ship
  • Dual-fuel injector and ship

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[0038] For technical problem solved by the present invention, the technical solutions adopted and achieved technical effect more apparent from the accompanying drawings and the following by specific embodiments to further illustrate the technical solutions of the present invention. It will be appreciated that the specific embodiments described herein are merely to illustrate the invention, not limitation of the invention. Also to be noted also that, for convenience of description, the accompanying drawings illustrate only the part related to the present invention, but not all.

[0039] In the description of the present invention, unless otherwise expressly specified or limited, the term "coupled", "connected", "fixed" are to be broadly understood, for example, may be a fixed connection, the connection may be detachable or integrally ; may be a mechanical connector may be electrically connected; may be directly connected, can also be connected indirectly through intervening structu...

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Abstract

The invention relates to the technical field of internal combustion engines, and discloses a dual-fuel injector and a ship. The dual-fuel injector comprises a valve body, a needle valve element and a sliding valve element. The ship adopts the dual-fuel injector, when the sliding valve element is located at the first position, the diesel oil channel, the inner cavity channel and the mold cavity are sequentially communicated, diesel oil enters from the diesel oil channel, and part of the diesel oil enters the injection cavity through the diesel oil channel, the inner cavity channel, the mold cavity and the injection channel. And the other part of the diesel enters the switch channel, the needle valve core moves under the pressure of the diesel and opens the injection orifice, and the diesel in the injection cavity is injected from the injection orifice. And when the sliding valve element is located at the second position, the natural gas enters the injection cavity through the natural gas channel, the cavity and the injection channel. Part of diesel oil enters the switch channel, the needle valve element moves under the pressure of the diesel oil, the injection opening is opened, and natural gas in the injection cavity is injected out of the injection opening. According to the dual-fuel injector, dual-fuel injection of diesel oil and natural gas can be achieved, and the structure of the dual-fuel injector is simplified.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, in particular to a dual fuel injector and a ship. Background technique [0002] With the increasingly stringent emission regulations, traditional diesel engines have become more and more difficult to meet the emission standards of marine engines. In this context, natural gas and diesel dual-fuel engines, as a model that takes into account both emissions and economy, occupy an increasing share of the marine diesel engine market. [0003] At present, there are two separate injection systems for natural gas and diesel in a conventional dual-fuel engine, which leads to a relatively complicated structure of the engine, high difficulty in installation, and makes the cylinder head of the engine very bloated, occupying a large installation space, to a certain extent Reduced the strength of the cylinder head. [0004] For this reason, need a kind of dual fuel injector and ship to sol...

Claims

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Application Information

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IPC IPC(8): F02M43/04F02D19/06
CPCF02M43/04F02D19/0602F02D19/0647F02D19/0686Y02T10/30
Inventor 付立洲文李明普东方
Owner CSSC POWER INST CO LTD
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