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Aluminium plunger for motorcycle carburettor and its manufacture

A manufacturing method and technology of carburetor, which are applied in carburetor, anodizing, machine/engine, etc., can solve the problems of low surface treatment hardness, unstable operation of motorcycle engine, wear and other problems

Inactive Publication Date: 2003-12-31
陈仁春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the existing carburetor plungers are all made of copper-based materials, because the surface treatment hardness of the copper substrate is not high (generally only reaches HV200), and the wear resistance is poor (the wear loss is 100,000 times up to 0.02 grams), and often work under strong gas and constantly reciprocating up and down, causing severe wear and tear, making the motorcycle engine unstable, especially the idling part is unstable, increasing fuel consumption and greatly affecting the performance

Method used

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  • Aluminium plunger for motorcycle carburettor and its manufacture
  • Aluminium plunger for motorcycle carburettor and its manufacture
  • Aluminium plunger for motorcycle carburettor and its manufacture

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Embodiment Construction

[0011] When the base material of the plunger of the present invention is specifically designed, raw materials such as iron, lithium, manganese and silicon can also be added in addition in the formula, and the ratio of the weight parts of each raw material added in the formula to the weight part of aluminum is: Aluminum: iron: lithium: manganese: silicon = 97-99.5: 0.10-0.40: 0.02-0.10: 0.02-0.10: 0.20-0.60.

[0012] When the present invention specifically adopts the aforementioned method steps to manufacture, wherein said chemical degreasing process step refers to immersing the finished plunger in a mixed solution of phosphoric acid and strong acid of a certain concentration, wherein phosphoric acid and strong acid (such as The ratio of parts by weight of sulfuric acid, hydrochloric acid, nitric acid, etc.) is: phosphoric acid: strong acid=40~60:10~20. The strong acid wherein can use commercially available industrial sulfuric acid, hydrochloric acid or nitric acid etc. The te...

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Abstract

The aluminium plunger is made of Al as main material component as well as small amount of Cu, Mg, Zn, Cr and other metal components. After fine machining, the plunger is further treated through the technological steps of chemical de-oiling, cleaning, anode oxidation, cleaning, activation, dyeing, cleaning, enclosed treatment and stoving. Compared with copper plunger, the aluminum one is superior in temperature performance, vibration resistance, abrasion resistance, etc. It has surface hardness over HV300, good idling stability and other advantages.

Description

Technical field: [0001] The invention relates to the improvement technology of a carburetor plunger part of a motor vehicle engine, in particular to an aluminum plunger for a carburetor that can be used for motorcycles, mopeds or other three-wheeled motor vehicles and a manufacturing method thereof. Background technique: [0002] The plunger is a precision part inside the carburetor. When working, the plunger moves up and down in the carburetor pump body, and its end often works under the strong erosion of the high-pressure siphon gas and mixed gas of the carburetor, so the material properties should be resistant to high and low temperature, vibration, and heat cycle. Resistant to negative compression and high surface hardness and wear resistance. But the existing carburetor plungers are all made of copper-based materials, because the surface treatment hardness of the copper substrate is not high (generally only reaches HV200), and the wear resistance is poor (the wear loss...

Claims

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Application Information

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IPC IPC(8): C25D11/04F02M19/00
Inventor 陈仁春
Owner 陈仁春
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