A crankshaftless two-stroke reciprocating engine

Abstract

The invention provides a two-stroke reciprocating engine without a crankshaft. The engine uses the relative motion of a cylindrical cam groove and a piston roller to complete the conversion between reciprocating motion and rotary motion. Compared with the crankshaft connecting rod mechanism, the utility model has the advantages of fewer parts, simple structure, flexible combination, convenient maintenance, and the inherent dumping moment of the crankshaft connecting rod mechanism can be eliminated. This design also adopts an offset swing exhaust valve. The exhaust port and exhaust channel are located on one side of the cylinder center. Direction of scavenging air flow. This design makes full use of the scavenging kinetic energy to improve the quality of air exchange. At the same time, it can flexibly arrange the fuel injector or spark plug, improve the oil mist distribution and ignition quality, and improve the combustion effect. Because there is no limitation of the crankshaft, multiple engines can be flexibly arranged, merged or disassembled, and the ignition interval can be adjusted to achieve smooth and efficient operation.

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

Images