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Box body of small gasoline engine

A gasoline engine and box technology, which is applied to engine components, machines/engines, cylinders, etc., can solve the problems of engine box heat dissipation performance, low exhaust emission standards, affecting engine life, and heavy cast iron cylinder liner quality. The effect of reducing the thermal form factor, improving the service life and reducing the phenomenon of cylinder pulling

Inactive Publication Date: 2012-07-04
唐维刚
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AI Technical Summary

Problems solved by technology

The quality of the cast iron cylinder liner used is relatively heavy, which increases labor intensity, and the cast iron cylinder liner in the cylinder block is severely worn and the cylindricity is not high, so the engine case is not high in terms of heat dissipation performance and exhaust gas emission standards, and it is easy to produce The phenomenon of cylinder scuffing directly affects the life of the engine

Method used

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  • Box body of small gasoline engine
  • Box body of small gasoline engine
  • Box body of small gasoline engine

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Embodiment Construction

[0012] See figure 1 and figure 2 , the present invention provides a small gasoline engine casing, the casing is filled with one-shot die casting, the casing includes a crankcase 1 and a cylinder 2, and no cast iron cylinder is embedded in the cylinder 2 set.

[0013] Wherein, the material used for the box body is aluminum alloy, the proportion of alloy silicon in the said aluminum alloy material is 18%-20%, and the proportion of alloy copper is 6%-8%.

[0014] Wherein, the cylinder body 2 is finished by rolling mirror technology.

[0015] A small gasoline engine casing of the present invention adopts the above technical scheme, and the casing is filled with one-time molding die casting, and the ratio of alloy silicon in the aluminum alloy material is adjusted to 18%-20%, and the ratio of alloy copper to 6%. -8%, which increases the wear resistance of the box body and reduces wear; at the same time, because the cylinder block does not use cast iron cylinder liners, when fin...

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Abstract

The invention discloses a box body of a small gasoline engine. The box body is subjected to one-time molding and impression die-casting filling and comprises a crankshaft box body and a cylinder body, wherein a cast iron cylinder liner is not embedded into the cylinder body; the box body is made of an aluminum alloy material; and in the aluminum alloy material, alloy silicon accounts for 18 to 20 percent, and alloy copper accounts for 6 to 8 percent. The box body has the advantages of high wear resistance, high radiating performance and longer service life.

Description

technical field [0001] The invention relates to a gasoline engine casing, in particular to a small gasoline engine casing widely used in forestry machinery. Background technique [0002] The cylinder block is widely used in various engines and is an indispensable and important part of the engine. The structure and quality of the engine cylinder block are the main factors affecting the life and output power of the engine. At present, cast iron cylinder liners are used in the engine block, and the proportion of alloy silicon in the aluminum alloy material used for the box body is 10%-12%. The proportion of copper is 3%-5%. The quality of the cast iron cylinder liner used is relatively heavy, which increases labor intensity, and the cast iron cylinder liner in the cylinder block is severely worn and the cylindricity is not high, so the engine case is not high in terms of heat dissipation performance and exhaust gas emission standards, and it is easy to produce The phenomenon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F7/00F02F1/00C22C21/02
Inventor 唐维刚
Owner 唐维刚
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