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
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[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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