Two-stroke internal combustion engine

Abstract

The invention discloses a two-stroke internal combustion engine. The two-stroke internal combustion engine comprises a shell, wherein the shell is internally provided with a piston and a crankshaft box; the crankshaft box comprises a rotating shaft; the rotating shaft is connected with a rotary compressor; the rotary compressor comprises an electromagnetic clutch and a compressed air outlet; the compressed air outlet is connected with a compressed air storage tank; the top of the shell is provided with an end cover; the end cover is provided with a compressed air nozzle, an exhaust port, a fuel injector and an ignition device; the compressed air nozzle is connected with the compressed air storage tank through a communicating pipe; the communicating pipe is provided with a compressed air automatic control valve; the exhaust port is provided with an exhaust valve; the internal combustion engine carries out air suction, acting and air exhaust processes in sequence. According to the two-stroke internal combustion engine provided by the invention, air suction and air exhaust are carried out independently, and the emission and fuel consumption are reduced.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a two-stroke internal combustion engine. Background technique [0002] An internal combustion engine is a kind of power machinery, which is a heat engine that directly converts the heat energy released by burning fuel inside the machine into power. Each working cycle of an internal combustion engine is composed of an intake stroke, a compression stroke, a power stroke and an exhaust stroke. According to the number of turns of the crankshaft that completes each working cycle, the internal combustion engine can be divided into a four-stroke internal combustion engine and a two-stroke internal combustion engine. The four-stroke internal combustion engine has the advantages of stable operation, environmental protection and energy saving, but has the disadvantages of high cost, large volume and low power. Contrary to the four-stroke internal combustion engine, the...

AI Technical Summary

Problems solved by technology

The four-stroke internal combustion engine has the advantages of stable operation, environmental protection and energy saving, but has the disadvantages of high cost, large volume and low power

[0003] However, the traditional two-stroke internal combustion engine does not have separate intake and exhaust strokes. It uses crankcase scavenging, which cannot completely discharge exhaust gas from the cylinder. The gas is discharged with the exhaust gas, so that the emissions and fuel consumption of the two-stroke internal combustion engine are high

At the same time, the compression ratio of the internal combustion engine is fixed because the volume of the combustion chamber and the working volume of the cylinder are fixed. The fixed compression ratio can only be applied to the fuel selected by the design, and the application range is small.

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