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Aluminium oil needle for carburettor plunger of motorcycle and its manufacture

A manufacturing method and technology of carburetors, applied in carburetors, anodizing, machines/engines, etc., can solve problems such as increased fuel consumption, excessive exhaust emissions, size changes, and unstable idle speed of motorcycles

Inactive Publication Date: 2003-12-10
陈仁春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing oil needles for the plunger of motorcycle carburetors are all made of copper material, the surface treatment hardness is low (generally only reaches HV200), and the wear resistance is poor.
Often working under strong gas, the size changes due to wear and tear, and the accuracy decreases. The wear loss can reach 0.02 grams for 100,000 times, making the motorcycle idling unstable, thereby increasing fuel consumption and exhaust gas emissions (idling CO emission is 2.6 %)

Method used

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  • Aluminium oil needle for carburettor plunger of motorcycle and its manufacture
  • Aluminium oil needle for carburettor plunger of motorcycle and its manufacture

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Embodiment Construction

[0009] In the specific design and manufacture of the present invention, metal raw materials such as iron, lithium, manganese and silicon can also be added to the formula of the oil needle base material, and the ratio of the weight parts of each raw material added to the weight part of aluminum in the specific formula It 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.

[0010] When the present invention adopts the process steps of the aforementioned method for manufacturing, the chemical degreasing process step refers to immersing the refined oil needles in a mixture of phosphoric acid and strong acid at a certain concentration, wherein the phosphoric acid and strong acid (As sulfuric acid, hydrochloric acid, nitric acid etc.) the ratio of parts by weight is; Phosphoric acid: strong acid=40~60:10~20. The strong acid can be commercially available industrial sulfuric acid, hydrochloric acid or nitric acid, etc., and the tempe...

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Abstract

The aluminum oil needle 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 oil needle is further treated through the technological steps of chemical de-oiling, cleaning, anode oxidation, cleaning, activation, dyeing, cleaning, enclosed treatment and stoving. By using aluminum material to replace copper material and through the said treatment, the oil needle has greatly improved surface quality, surface hardness up to HV300, good idling stability, high abrasion resistance and good machinability.

Description

1. Technical field [0001] The invention relates to an improvement technology of a motor vehicle engine carburetor, in particular to an oil needle made of aluminum for a carburetor plunger of a motorcycle, a moped or other three-wheeled motor vehicles and a manufacturing method thereof. 2. Background technology [0002] The oil needle is a key part of the heart of the carburetor. Its internal and surface treatment quality directly affect the motorcycle's idling speed, fuel consumption, and exhaust emissions. In the nozzle, it is strongly eroded by the mixed gas of high-pressure siphon gas and oil flow, so it requires high surface hardness and high wear resistance. But the oil needle of existing motorcycle carburetor plunger all adopts copper material to make, and its surface treatment hardness is low (generally only reaches HV200), and wear resistance is poor. Often working under strong gas, the size changes due to wear and tear, and the accuracy decreases. The wear loss can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/04F02M19/04
Inventor 陈仁春
Owner 陈仁春
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