Two-stroke engine

Abstract

The invention provides a two-stroke engine. The two-stroke engine comprises a cylinder body and a slider-crank mechanism; a compression chamber and a rotor cavity which communicate with each other arearranged in the cylinder body; a plurality of combustion chambers are formed by the wall surface of the rotor cavity and a rotor, a slider of the slider-crank mechanism moves in the compression chamber, and mixed gas in the combustion chambers is ignited so as to enable the rotor to rotate ; and an output shaft of the rotor is connected with a crank of the slider-crank mechanism through a transmission mechanism. The compression chamber communicates with the rotor cavity through a reducing pipe; and an air inlet channel is formed in the reducing pipe, and a one-way valve is arranged on the airinlet channel and is used for preventing backflow in a compression process. One end of the slider of the slider-crank mechanism is in a reducing shape, and the reducing end of the slider is matched with the reducing pipe and is used for compressing all the mixed gas in the compression chamber into the combustion chambers. According to the two-stroke engine, air inflow and air exhaust are completely separated, so that the scavenging process is omitted, and the charge loss caused by the fact that fresh mixed gas escapes from an exhaust port in the air inlet stroke is avoided.

Description

technical field [0001] The invention relates to the technical field of power machinery systems, in particular to a two-stroke engine. Background technique [0002] Compared with the four-stroke engine, the two-stroke engine has its natural advantages, that is, because the two-stroke engine rotates the crankshaft once, the engine does work once, so the work ability is strong. Therefore, the advantages of the two-stroke engine are high efficiency, simple structure and few parts. However, the ventilation of the traditional two-stroke engine is mainly in the form of scavenging, that is, the compressed fresh air-fuel mixture is used to directly drive and squeeze the burned exhaust gas, which results in short ventilation time and long-term fresh charge and combustion exhaust gas. Blending, so the engine's ventilation quality is not high and the residual exhaust gas coefficient is large, and there is a large loss of fresh charge. Therefore, the defects of traditional two-stroke e...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a two-stroke engine, which completely separates the intake air from the exhaust air, reduces the scavenging process, and prevents fresh mixed gas from escaping from the exhaust port during the intake stroke. The resulting loss of charge also avoids the problem that the combustion exhaust gas cannot be exhausted during the exhaust stroke, resulting in a decrease in the quality of ventilation.

Images