Internal combustion engine combustion system for direct injection of methanol fuel in cylinder

A methanol fuel and combustion system technology, applied in combustion engines, mechanical equipment, machines/engines, etc., can solve problems such as difficult application, difficult methanol evaporation, high octane number, etc., to achieve improved ignition stability and high ignition energy , a wide range of effects

Pending Publication Date: 2022-03-25
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because methanol is difficult to evaporate and has the characteristics of high octane number, it is difficult to apply in the combustion system of fuel direct injection-compression ignition

Method used

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  • Internal combustion engine combustion system for direct injection of methanol fuel in cylinder
  • Internal combustion engine combustion system for direct injection of methanol fuel in cylinder
  • Internal combustion engine combustion system for direct injection of methanol fuel in cylinder

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Embodiment Construction

[0019] In order to further illustrate the functions of the present invention, the present invention will be described in detail below, but it should be understood that the protection scope of the present invention is not limited by specific embodiments.

[0020] Such as Figures 1 to 3 As shown, the combustion system of an internal combustion engine with direct injection of methanol fuel in the cylinder of the present invention mainly includes a combustion chamber between the cylinder head 1 and the top surface of the piston 2, and the combustion chamber is composed of a main combustion chamber 8 and several pre-combustion chambers 3 .

[0021] The main combustion chamber 8 is the main combustion area of ​​the internal combustion engine, and several methanol injectors II4 are embedded on its top, and each of the methanol injectors II4 is provided with a number of nozzle holes 10 in different directions and different levels, which can realize Inject methanol spray 11 with a rel...

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Abstract

The internal combustion engine combustion system comprises a combustion chamber, the combustion chamber is composed of a main combustion chamber and pre-combustion chambers, and each pre-combustion chamber is embedded into the top of the main combustion chamber; methanol ejectors II are embedded in the top of the main combustion chamber, and each methanol ejector II is provided with spraying holes in different directions and at different horizontal heights, so that high-pressure methanol spray is sprayed into the main combustion chamber; each pre-combustion chamber is provided with a spark plug and a methanol ejector I, each pre-combustion chamber is provided with through holes with different directions and different horizontal heights, the pre-combustion chambers are communicated with the main combustion chamber through the through holes, jet flame is jetted into the main combustion chamber through the through holes, methanol spray is ignited through the jet flame, and methanol spray combustion is achieved. Methanol spray in the main combustion chamber is ignited through jet flame generated by ignition combustion in the pre-combustion chamber, methanol spray combustion in the main combustion chamber is achieved, and engine combustion is controlled by diffusion flame of methanol.

Description

technical field [0001] The invention relates to the field of internal combustion engines, and more specifically relates to a combustion system of an internal combustion engine with direct injection of methanol fuel in a cylinder. Background technique [0002] Methanol has a wide range of sources of raw materials, such as coal, natural gas and biomass, which provide the possibility for industrial application; in addition, methanol is a high-oxygen fuel with fast combustion speed, wide ignition limit, and no carbon smoke after combustion. Therefore, it is a carbon-neutral fuel with broad development prospects. Methanol fuel is becoming more and more important in the field of internal combustion engines for vehicles and ships. The application of methanol on internal combustion engines is mainly based on ignition ignition, and the combustion rate is controlled by turbulent flame propagation. Compared with the Otto cycle of the ignition engine, the direct injection fuel compres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B19/10F02B19/12
CPCF02B19/1095F02B19/12
Inventor 尧命发叶映刘海峰王灿
Owner TIANJIN UNIV
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