Hydrogen internal combustion engine combustion system and combustion control method

A technology of combustion system and internal combustion engine, which is applied in the direction of fuel system, internal combustion piston engine, gaseous engine fuel, etc. It can solve the problems of high combustion temperature, high NOx emission, and high processing cost, so as to suppress the formation of NOx, reduce NOx emission, improve Effect of ignition energy and thermal efficiency of combustion

Pending Publication Date: 2021-08-03
TSINGHUA UNIV
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  • Application Information

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Problems solved by technology

However, studies have shown that due to the high combustion speed and high combustion temperature of hydrogen, the NOx

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  • Hydrogen internal combustion engine combustion system and combustion control method
  • Hydrogen internal combustion engine combustion system and combustion control method
  • Hydrogen internal combustion engine combustion system and combustion control method

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" ", "Top", "Bottom", "Inner", "Outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the con...

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Abstract

The invention relates to the technical field of internal combustion engines, and provides a hydrogen internal combustion engine combustion system and a combustion control method. The hydrogen internal combustion engine combustion system comprises a jet flow chamber and a main combustion chamber. A spark plug is arranged in the jet flow chamber, a jet flow hole is formed in the bottom of the jet flow chamber, and the main combustion chamber communicates with the jet flow chamber through the jet flow hole. The system further comprises a hydrogen ejector, and a nozzle of the hydrogen ejector is arranged in the jet flow chamber. The nozzle is used for spraying hydrogen into the jet flow chamber at the tail phase of the air intake stroke and the compression stroke, and in the air inlet stroke, thin mixed gas is distributed in the main combustion chamber. And at the later phase of the compression stroke, concentrated mixed gas is distributed in the jet flow chamber. Based on the active jet flow ignition technology of the jet flow chamber, the heat efficiency of an internal combustion engine can be improved; and meanwhile, the hydrogen two-time ejection technology is adopted, the thin mixed gas and the thick mixed gas are formed in the main combustion chamber and the jet flow chamber respectively, NOx generation can be effectively restrained in the whole combustion chamber, and NOx emission is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a hydrogen internal combustion engine combustion system and a combustion control method. Background technique [0002] In order to meet the increasingly stringent fuel consumption requirements, the thermal efficiency of the internal combustion engine must be greatly improved. Among them, lean combustion (referred to as "lean combustion") is a relatively promising one among many technical routes. However, under lean-burn conditions, especially when the excess air ratio of the mixture reaches more than 2.0, unstable ignition and flame propagation are prone to occur, and it is necessary to increase the ignition energy. Jet ignition technology is an effective way to solve this problem, mainly including jet ignition system with jet chamber, the spark plug first ignites the gas in the jet chamber, the temperature and pressure in the jet chamber rise sharply, and the...

Claims

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Application Information

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IPC IPC(8): F02B43/10F02M21/02
CPCF02B43/10F02M21/0218F02M21/0206F02M21/0275Y02T10/30
Inventor 王志王巍赵自庆蔡开源
Owner TSINGHUA UNIV
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