Forward and reverse screw shuttle type free piston engine

Abstract

The invention discloses a positive and negative screw shuttle type free piston engine which comprises a cylinder body and a rotating shaft, rotating drums are fixedly arranged on the rotating shaft at intervals, spiral grooves are formed in the outer surfaces of the rotating drums, pistons are arranged between the rotating drums and the cylinder body, driving blocks are arranged on the surfaces of inner round holes of the pistons, and the driving blocks are movably embedded into the spiral grooves respectively. Four baffles are arranged on the surface of the outer circle of the piston at intervals, a sealing ring is arranged on the outer circle of each baffle, guide grooves are formed in the upper end and the lower end of an inner round hole of the cylinder body along the axis of the rotating shaft, guide blocks movably matched with the guide grooves are arranged on the baffles along the axis of the rotating shaft, and partition plates staggered with the baffles are arranged on the inner round hole of the cylinder body at intervals. The engine has the characteristics of an in-line four-cylinder engine and the characteristics of a free piston engine, and is high in stability, good in low-speed torque characteristic, low in fuel consumption, simple in structure, small in size, small in mass, low in gravity center, small in mechanical energy loss, high in efficiency, good in stability, low in idle speed, small in mechanical vibration and low in noise.

Description

technical field [0001] The invention relates to an engine, in particular to a forward and reverse screw shuttle that drives a rotary drum-type forward and reverse screw to rotate through a free piston reciprocating back and forth in a straight line, and then drives a rotating shaft to rotate in the same rotation direction through a one-way bearing free-piston engine. Background technique [0002] The engine is the power unit of the car and the heart of the car, and its performance directly affects the performance of the car. Automobile engines mainly include reciprocating piston internal combustion engines and rotary piston internal combustion engines. At present, most of the car engines are reciprocating piston internal combustion engines (in-line, V-type, W-type and horizontally opposed), which transmit power through a crank connecting rod; and rotary piston internal combustion engines (rotary engines), only Mazda is still doing it. In a free-piston engine, "free piston"...

AI Technical Summary

Problems solved by technology

However, the inline four-cylinder engine has the following disadvantages: one is that the engine has a higher height, takes up a large height space, is larger in size, heavier in mass, and has a high center of gravity; second, it has low stability, high fuel consumption, and large loss of mechanical energy. , The efficiency is not high enough, the stability is not strong, the mechanical vibration is large, and there is noise

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