Premixed compression ignition system for spark ignition internal combustion engine

A technology of spark plugs and internal combustion engines, applied in charging systems, combustion engines, mechanical equipment, etc., can solve problems such as temperature and pressure rise, and achieve the effect of reducing pressure rise rate, effectively controlling combustion rate, and reducing soot and other emissions.

Active Publication Date: 2021-10-15
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention is based on the idea that when a high-energy spark plug ignites diesel oil, or ignites a mixture of diesel oil and other fuels, the temperature and pressure in the cylinder rise, and the pre-mixed gas compresses and ignites in a large range, it provides a spark plug-ignited pre-mixed compression ignition system for an internal combustion engine, which solves the problem of pre-mixed compression ignition Ignition phase control problem of mixed compression ignition for efficient and clean premixed compression ignition of internal combustion engines

Method used

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  • Premixed compression ignition system for spark ignition internal combustion engine
  • Premixed compression ignition system for spark ignition internal combustion engine
  • Premixed compression ignition system for spark ignition internal combustion engine

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Embodiment Construction

[0021] figure 1 The high-energy spark plug 3 and the direct injection fuel injector 4 of the premixed compression ignition system of the spark ignition type internal combustion engine shown are both arranged on the cylinder head 1 . The premixed compression ignition system of the spark ignition type internal combustion engine injects the premixed fuel into the combustion chamber 2 through the single or multiple pulse injections of the direct injection nozzle 4 during the intake stroke or the compression stroke to form a premixed gas; Low effective compression ratio, EGR, intake air cooling, etc. are used to prevent the pre-mixed gas in the cylinder from being compression-ignited; near the compression top dead center, the high-energy spark plug 3 is used to ignite the mixed gas near it, so that the temperature in the cylinder and The pressure rises at the same time, reaching the self-ignition condition of the pre-mixed gas, stimulating the multi-point spontaneous combustion of ...

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Abstract

A spark plug ignition type internal combustion engine premixed compression ignition system belongs to the technical field of internal combustion engine combustion. The combustion system uses a high-energy spark plug to ignite diesel or a mixture of diesel and other fuels. As premixed fuel, it is injected during the intake stroke or compression stroke to form a premixed gas in the combustion chamber. Adopt an effective compression ratio that does not allow the pre-mixed gas to ignite, so that the pre-mixed gas in the cylinder does not spontaneously ignite; near the top dead center of compression, the high-energy spark plug is ignited to ignite the mixed gas near the spark plug, so that the temperature and pressure in the cylinder rise rapidly High, the rest of the pre-mixed gas in the cylinder reaches the spontaneous combustion condition, and large-scale multi-point spontaneous combustion occurs to realize rapid combustion of the pre-mixed gas; a large expansion ratio is adopted to further improve thermal efficiency.

Description

technical field [0001] The invention relates to a spark plug ignition type internal combustion engine premixed compression ignition system, which belongs to the technical field of internal combustion engine combustion. [0002] technical background [0003] The traditional diesel engine belongs to the diffusion combustion of heterogeneous mixing, and there are two main contradictions of economy and emission, soot emission and NOx emission; while the traditional gasoline engine has low thermal efficiency. For this reason, since the 1980s, in order to improve combustion and reduce emissions, the concept of premixed compression ignition has entered people's field of vision. However, premixed compression firing phase control has not been resolved. Contents of the invention [0004] In order to effectively control the premixed compression ignition phase of the internal combustion engine, the fuel that is easy to compress and ignite can be used to ignite the fuel that is suitabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B1/10F02M61/14F02D41/40F02D41/30F02D41/00F02D15/00
CPCF02B1/10F02D15/00F02D41/0047F02D41/3094F02D41/401F02D41/402F02D2700/03F02M61/14F02M61/145
Inventor 隆武强礼博田华崔靖晨陈雷曹建林肖鸽王洋
Owner DALIAN UNIV OF TECH
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