Crankshaft-free two-stroke reciprocating engine

Abstract

The invention provides a crankshaft-free two-stroke reciprocating engine. According to the crankshaft-free two-stroke reciprocating engine, conversion between reciprocating motion and rotary motion is completed through relative motion of a cylindrical cam groove and a piston roller. Compared with a crankshaft connecting rod mechanism, the crankshaft-free two-stroke reciprocating engine has the advantages that the parts are less, the structure is simple, the combination is flexible, the maintenance is convenient, and inherent dumping moment of the crankshaft connecting rod mechanism is eliminated. According to the design of the crankshaft-free two-stroke reciprocating engine, an offset swing exhaust valve is also adopted, an exhaust port and an exhaust passage are located on one side of the center of an air cylinder, and the exhaust valve swings according to a path determined by a guide rail and a swing valve ball head while vertically descending, so that an opening is right against the scavenging flowing direction. According to the design of the crankshaft-free two-stroke reciprocating engine, sweeping pneumatic energy is sufficiently utilized, the ventilation quality is improved, an oil sprayer or a spark plug can be flexibly arranged, the oil mist distribution and ignition quality is improved, and the combustion effect is improved. Due to the fact that limitation of a crankshaft is avoided, multiple engines can be flexibly arranged, merged or separated, the ignition interval is adjusted, and stable and efficient operation is achieved.

Description

technical field [0001] The invention relates to the technical field of mechanical design and manufacture, in particular to a crankshaftless two-stroke reciprocating engine. Background technique [0002] Among the four major types of engines, reciprocating piston engines are the most common. This type of engine is also called an internal combustion engine and is divided into a gasoline engine and a diesel engine. The core component of an existing internal combustion engine is a crank connecting rod mechanism. This mechanism is indispensable to complete the conversion of the two motion states of rotation and reciprocation. Its inherent disadvantage is that it has the dumping moment, which is the vibration source of the engine; the two-stroke engine in the internal combustion engine has the advantages of simple structure, large power output and reliable structure. and other advantages, but because there is no independent ventilation stroke, the exhaust gas discharge is not comp...

AI Technical Summary

Problems solved by technology

This mechanism is indispensable to complete the conversion of the two motion states of rotation and reciprocation. Its inherent disadvantage is that it has the dumping moment, which is the vibration source of the engine; the two-stroke engine in the internal combustion engine has a simple structure, large power output, and reliable structure. and other advantages, but because there is no independent ventilation stroke, the exhaust gas discharge is not complete, which affects the combustion performance, which is one of the bottlenecks restricting the development of this type of engine

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