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Rapid combustor of airflow hedging natural gas engine

A technology of airflow hedging and combustion chamber, which is applied in the directions of engine components, machines/engines, mechanical equipment, etc., and can solve the problems of fast combustion chamber reports of natural gas engines without airflow hedging.

Inactive Publication Date: 2010-05-12
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are currently no reports of fast combustors in gas-flow opposed natural gas engines

Method used

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  • Rapid combustor of airflow hedging natural gas engine
  • Rapid combustor of airflow hedging natural gas engine
  • Rapid combustor of airflow hedging natural gas engine

Examples

Experimental program
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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] figure 1 1. The outer diameter of the ring groove of the piston head, 2. The diameter of the shallow altar-shaped combustion chamber, 3. The diameter of the constriction of the shallow al. 6. Rounded corners at the bottom of the combustion chamber, 7. The depth of the ring groove at the top of the piston, 8. The depth of the constriction of the combustion chamber, and 9. The depth of the combustion chamber. figure 2 10 piston head ring groove inner diameter, 11 inclined groove width, 12 inclined groove centerline angle.

[0016] combine figure 1 and figure 2 The combustion chamber of the lean-burn natural gas engine with medium airflow is offset. The combustion chamber is located at the top of the piston and is in the shape of a shallow altar with a neck. The structural dimensions are as follows: the diameter of the combustion chamber is 100mm, the diameter...

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Abstract

The invention provides a rapid combustor of an airflow hedging lean-burn natural gas engine. The combustor is positioned on the top part of a piston, and the shape of the combustor is necking shallow ampullaceous; a circular groove is arranged on the top part of the piston; the circular groove is communicated with the shallow ampullaceous combustor through four uniformly distributed chutes; when the piston is close to a compression upper dead center, the airflow is erupted out at a high speed from the circular groove through the chutes and hits against with the rotating vortex formed in the intake process to damage the vortex structure in the shallow ampullaceous combustor and increase turbulent kinetic energy in a cylinder, thereby enabling the natural gas engine to generate rapid combustion, expanding stable operational lean-burn limit of the engine, and improving the dynamic property, economical efficiency and emission performance of the engine.

Description

(1) Technical field [0001] The invention relates to the technical field of engines, in particular to a rapid combustion chamber of an air-flushing type lean-burn natural gas engine. (2) Background technology [0002] The increasingly prominent problems of energy shortage and environmental pollution have brought broad development opportunities for natural gas vehicles with abundant resources and clean combustion. [0003] Natural gas engine lean-burn technology can not only improve engine fuel economy, but also reduce exhaust emissions. However, as the mixture becomes lean, the combustion rate decreases rapidly, especially the ignition temperature of the natural gas engine is high and the flame propagation speed is slow. Propensity and HC emissions increase, so to further improve lean-burn natural gas engine performance, increasing the engine combustion rate is the key. [0004] The shape of the combustion chamber is one of the most important factors affecting the combustio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/26
Inventor 杨立平马修真李学民李文辉宋恩哲
Owner HARBIN ENG UNIV
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