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Engine intake pipe

A technology for intake pipes and engines, which is applied in the direction of engine components, machines/engines, mechanical equipment, etc. It can solve the problems of large differences in cylinder working conditions, uneven gas outlets, and affecting engine performance, and achieves stable dimensions and uniform gas output. , the effect of low surface roughness values

Inactive Publication Date: 2015-07-15
张勤军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Large, affecting engine performance, and at the same time, due to the low density of the cast intake pipe, it is easy to cause cracking
[0006] In addition, the air outlet of the existing air intake pipe is uneven, resulting in the lack of oxygen in some cylinders, insufficient combustion, and large differences in the working conditions of each cylinder.

Method used

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Examples

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Embodiment Construction

[0041] Examples such as Figure 1-4 As shown, the engine intake pipe includes a core pipe 9 made of seamless steel pipe with a rectangular cross section, the two ends of the core pipe 9 are sealed, and the outer surface of the core pipe 9 is die-cast with a shell made of aluminum material 1. The housing 1 is provided with an air inlet 3 and an air outlet 2 , the air inlet 3 communicates with the air outlet 2 , and the air inlet 3 and the air outlet 2 are set on two opposite surfaces of the housing 1 . In the air intake pipe of the present invention, the core pipe 9 made of seamless steel pipe is used inside, and the outer die-casting shell 1 ensures the smoothness of the air passage inside the air intake pipe, reduces the airflow resistance, makes the air intake more smooth, and increases the inflation efficiency . The core tube 9 is used inside and the die-casting shell 1 is used outside, which improves the density of the intake pipe, increases the strength of the intake pi...

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Abstract

The invention discloses an engine intake pipe which comprises a core tube, wherein a casing made of an aluminum material is arranged on the outer surface of the core tube in a pressure casting way, and an air inlet and an air outlet which communicate with each other are formed in the casing. The core tube made of a seamless steel tube is arranged inside the intake pipe and the aluminum casing is arranged on the outer portion of the intake pipe in a pressure casting way, so the degree of finish of an air path in the intake pipe is ensured, airflow resistance is reduced, air intake is more fluent, and the inflation efficiency is improved; the core tube is arranged at the interior and the aluminum die-cast casing is arranged on the outer portion so the density and the strength of the intake pipe are improved and intake pipe cracking is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of die casting, in particular to an engine intake pipe. Background technique [0002] Most of the existing engine intake pipes are processed by aluminum casting process, and the surface of the intake pipe after casting [0003] The surface roughness is relatively high, generally 3.2. Casting is not only inefficient, but also prone to pores, sticky sand, sand inclusions, trachoma, bulging sand, cold shut, insufficient pouring, shrinkage porosity, shrinkage cavities, and defects in the air intake pipe. Defects such as meat, sarcoma, etc. [0004] Due to the high roughness of the inner and outer walls of the intake pipe made by casting, the airflow resistance is increased. [0005] Large, affecting engine performance, and at the same time, due to the low density of the cast intake pipe, it is easy to cause cracking. [0006] In addition, the air outlet of the existing air intake pipe is uneven, resu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/104
Inventor 张勤军
Owner 张勤军
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