Gasoline engine with two horizontally and oppositely arranged cylinders

Abstract

The gasoline engine with two horizontally and oppositely set cylinders includes upper and lower engine bodies, cylinders, spark plug, piston assembly, piston ring, crankshaft link assembly, leaf valve assembly and carburetor. The crankshaft link assembly is set inside the crankshaft box comprising the upper and the lower engine bodies, the right and the left cylinders are set horizontally on two sides of the crankshaft box and are provided with separated exhaust pipes, the piston assembly is connected to the crankshaft link assembly and set inside the right and the left cylinders, and the carburetor is fixed on the crankshaft box via the leaf valve and has fixed gas intake seat. With the said structure, the gasoline engine of cylinder diameter of 33 mm has displacement of 48 cc, maximum power up to 3.1 kw in 8500 rpm rotation speed and rotation speed stability within 1 %.

Description

technical field [0001] The invention relates to a gasoline engine, in particular to a small double-cylinder gasoline engine. Background technique [0002] At present, the general-purpose small twin-cylinder gasoline engine structure generally has two types: V-type twin-cylinder gasoline engine and parallel twin-cylinder gasoline engine, which have the following defects: First, because the pistons do not move symmetrically relative to the center of the crankshaft on the same plane, they cannot offset each other. The force causes the gasoline engine to vibrate greatly, which invisibly consumes the power of the gasoline engine, with high power consumption and low utilization rate; second, the two cylinders do not work at the same time, and the stability of the gasoline engine speed is relatively poor; third, two carburetors are required, Moreover, the requirements for the consistency of the two carburetors are high, which increases the production difficu...

AI Technical Summary

Problems solved by technology

[0002] At present, the general-purpose small twin-cylinder gasoline engine structure generally has two types: V-type twin-cylinder gasoline engine and parallel twin-cylinder gasoline engine, which have the following defects: First, because the pistons do not move symmetrically relative to the center of the crankshaft on the same plane, they cannot offset each other. The force causes the gasoline engine to vibrate greatly, which invisibly consumes the power of the gasoline engine, with high power consumption and low utilization rate; second, the two cylinders do not work at the same time, and the stability of the gasoline engine speed is relatively poor; third, two carburetors are required, And the consistency requirements of the two carburetors are high, which increases the difficulty of production and increases the production cost; the fourth is that the volume is large and the installation is inconvenient

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