Piston for two-stroke crank round sliding block internal-combustion engine and internal-combustion engine thereof

Abstract

The invention relates to a piston for a two-stroke crank round sliding block internal-combustion engine, comprising a crown part and a piston seat; wherein the crown part is provided with a baffle which extends downwards from a piston ring belt and is used for shielding an air hole, the external diameter surface of the baffle is matched with the internal diameter surface of a cylinder, and the set angle is unfolded along the circumferential direction; and the piston seat is provided with a round sliding block containing hole for installing a round sliding block. The round sliding block containing hole of the bearing seat is arranged inside a round sliding block containing body, the lower side of which is provided with a scavenging piston crown part that is provided with a ring groove provided with an oil ring. Compared with the prior art, the piston is provided with the baffle for shielding the air hole, extends at a certain angle along the circumferential direction and can be designed to be a thinner form, so that the baffle can not lead the mass of the piston to be obviously increased and ensures the crank round sliding block engine to still maintain the advantage of less reciprocating inertia. In the preferential scheme, the scavenging efficiency can be improved by the specially arranged scavenging piston.

Description

technical field [0001] The invention relates to internal combustion engine technology, in particular to a piston used in a two-stroke crank circular slider internal combustion engine. The present invention also relates to a two-stroke crank-slider internal combustion engine using the above-mentioned piston. Background technique [0002] The kinematic mechanism of a traditional engine is a crank linkage mechanism. Under this kind of kinematic mechanism, the reciprocating motion of the piston needs to be transmitted to the crankshaft through the connecting rod connected to it. During the movement, the connecting rod swings back and forth with the movement of the piston, so that the piston is subjected to a periodic change with a higher-order function. lateral force. [0003] Due to the existence of the connecting rod, the internal combustion engine of the crank connecting rod mechanism has disadvantages such as bulky, heavy, and poor balance performance. The characteristic...

AI Technical Summary

Problems solved by technology

For example, a two-stroke engine designed according to general working conditions can only be used in low-altitude areas, and in a plateau environment, due to the thin air, the problem of insufficient scavenging pressure will occur, which will cause a sharp decline in the performance of the internal combustion engine. even completely unusable

Due to the above, the same two-stroke engine cannot be used at different altitudes, which affects its application flexibility

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