Air inlet vortex adjusting structure of diesel engine

A technology for adjusting structure and diesel engine, applied in mechanical equipment, exhaust gas recirculation, engine components, etc., and can solve problems such as abnormal local swirl ratio

Active Publication Date: 2011-10-05
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the mixing of the above-mentioned vortex air passage and the direct air passage enters the air flow and easily forms turbulent flow resulting in abnormal local swirl ratio, and provides a diesel engine intake vortex adjustment structure with double vortex intake

Method used

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  • Air inlet vortex adjusting structure of diesel engine
  • Air inlet vortex adjusting structure of diesel engine
  • Air inlet vortex adjusting structure of diesel engine

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Embodiment

[0019] Embodiment: a kind of diesel engine intake swirl adjustment structure, such as figure 1 , figure 2 , image 3 shown. figure 1 , figure 2 It is a structural diagram of the intake port in the cylinder head of a diesel engine, in which the entity of the cylinder head is removed, and the hollow structure of the intake port is retained. figure 1 , figure 2 In the center, the leftmost is the inlet of the intake port, which communicates with the outside of the cylinder head. The inner side of the inlet is bifurcated into a high-swirl intake pipe 1 and a low-swirl intake pipe 2. The side of the high-swirl intake pipe 1 is connected to an EGR intake pipe 3. An adjustable flow valve 11 is arranged in the swirl intake pipe 2 . The high swirl intake pipe 1 is connected to the high swirl pressure stabilizing chamber 5, and is bifurcated into four high swirl intake manifolds 7 on the other side of the high swirl flow stabilizing chamber 5; the low swirl intake pipe 2 is conne...

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PUM

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Abstract

The invention relates to the field of engines, in particular to an air inlet vortex adjusting structure of a diesel engine. The structure comprises an air inlet channel arranged in a cylinder cover of an engine. One side of the air inlet channel is communicated with the outer part of the cylinder cover. One side of the air inlet channel is communicated with a combustion chamber. The air inlet vortex adjusting structure is characterized in that the air inlet channel is divided into a high-vortex air inlet pipe and a low-vortex air inlet pipe; an adjustable flow valve is arranged in the low-vortex air inlet pipe; the high-vortex air inlet pipe is branched to form a plurality of high-vortex air inlet manifolds; the low-vortex air inlet pipe is branched to form a plurality of low-vortex air inlet manifolds; and each combustion chamber is communicated with one high-vortex air inlet manifold and one low-vortex air inlet manifold simultaneously. The structure disclosed by the invention is capable of adjusting vortex in the combustion chamber so that a proper vortex ratio is always kept in the combustion chamber. Both the high-vortex air inlet channel and the low-vortex air inlet channel are vortex air inlet channels so that two strands of vortexes in the combustion chamber are successfully mixed and a turbulent flow is difficult to generate.

Description

technical field [0001] The invention relates to the field of engines, in particular to an air intake vortex regulating structure of a diesel engine. technical background [0002] The particle emission of the diesel engine is directly related to the size of the vortex in the combustion chamber. When the vortex is small, the oil beam of the injector cannot be completely mixed with the air, so that the local excess air coefficient is less than 0.5, and particles are generated; when the vortex is large In this case, the adjacent oil beams sprayed by the injector will intersect, which also makes the local excess air coefficient very small. Therefore, only by adjusting the moderate swirl ratio can the combustion particles be reasonably controlled, and the formation of the swirl is closely related to the structure of the intake port. relation. However, the operating conditions of the engine change at any time, and the required swirl ratio also changes accordingly. Therefore, in or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B31/08F02M35/108F02D9/08F02M25/07F02M26/17
CPCY02T10/146Y02T10/121Y02T10/12
Inventor 苏圣由毅李慧军胡景彦李书福杨健赵福全
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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