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Multi-combustion-mode ammonia fuel engine and control method thereof

A combustion mode and engine technology, which is applied to combustion engines, internal combustion piston engines, engine components, etc., can solve problems such as insufficient power and low thermal efficiency, and achieve the effects of ensuring stability, efficient and stable combustion, and stable ignition

Active Publication Date: 2022-04-12
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at medium and high loads, the premixed combustion mode often faces problems such as low thermal efficiency and insufficient power. At this time, the advantages of the diffusion combustion mode engine are revealed

Method used

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  • Multi-combustion-mode ammonia fuel engine and control method thereof
  • Multi-combustion-mode ammonia fuel engine and control method thereof
  • Multi-combustion-mode ammonia fuel engine and control method thereof

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Embodiment

[0040] A multi-combustion mode ammonia fuel engine based on turbulent jet ignition. Its main feature is that the jet ignition device can promote the advantages of stable combustion in the cylinder. By advancing or delaying the ammonia injection time in the main combustion chamber, the ammonia fuel in the main combustion chamber can be adjusted. The timing of injection and pre-chamber jet generation can change the mixing state of the working fluid when the main combustion chamber combustion occurs, and finally form different combustion modes in the main combustion chamber: premixed combustion mode and diffusion combustion mode. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The implementation of the jet ignition device including the pre-chamber and the control method of multiple combustion modes will be further described below in conjunction with the accompanying drawings.

[0041] like figure 1 As shown, a multi-combustion mode ammonia fuel engine based on turbulent jet ign...

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Abstract

The invention discloses a multi-combustion-mode ammonia fuel engine which comprises an engine cylinder cover, a cylinder sleeve, a piston, a main combustion chamber, an air inlet valve and an air outlet valve and further comprises a jet ignition device arranged on the cylinder cover and used for providing an ignition source for the main combustion chamber and an ammonia injector used for providing mixed gas for the main combustion chamber. The jet ignition device comprises an air ejector, a fuel ejector, a spark plug and a pre-combustion chamber for generating jet flames, and a nozzle of the spark plug, a nozzle of the air ejector and a nozzle of the fuel ejector are arranged on the same side of the pre-combustion chamber; and an axial included angle between the jet ignition device and a nozzle of the ammonia gas ejector is 40-60 degrees. The invention further discloses a control method of the multi-combustion-mode ammonia fuel engine. The timing sequence of ammonia injection of the main combustion chamber and jet generation of the pre-combustion chamber is controlled, the fuel / air mixing state before ignition of the main combustion chamber is adjusted, and finally a premixed combustion mode or a diffusion combustion mode is formed in the main combustion chamber.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, and relates to an ammonia fuel engine with multiple combustion modes based on a turbulent jet ignition mode and a control method thereof. Background technique [0002] Global warming and sea level rise caused by excessive carbon dioxide emissions are major issues facing countries all over the world. Carbon dioxide emission reduction has become a key element in the development of the transportation industry, and the development of carbon-free fuels has become an important solution to reduce carbon emissions. As a nitrogen-hydrogen compound, ammonia does not produce carbon dioxide during combustion, and has great potential for carbon reduction. In addition, ammonia gas is convenient for storage and transportation and has a stable supply chain. Therefore, ammonia fuel is considered as a potential stock for the engine to achieve zero carbon emissions. [0003] When ammonia is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B19/10F02B19/12F02B43/10F02B43/12
CPCY02T10/12Y02T10/30F02M21/0206F02M21/0248F02B19/10F02B19/12F02B19/1085F02B19/108F02D19/0692F02D41/0025F02D41/3094F02D19/10F02M21/0275F02B19/1023F02D41/3047F02D19/0644F02D19/0689F02D41/0027F02D35/028F02D41/3041F02M2200/95
Inventor 周磊刘宗宽卫海桥钟力嘉舒歌群
Owner TIANJIN UNIV
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