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

A technology of crank round slider and internal combustion engine, applied in the direction of internal combustion piston engine, piston, combustion engine, etc., can solve the problems that two-stroke engines cannot be used, the influence of application flexibility, the performance of internal combustion engines, etc., and achieves small reciprocating inertia, increased mass, The effect of improving combustion efficiency

Inactive Publication Date: 2013-11-06
BEIJING SINOCEP ENGINE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Piston for double-stroke crank round sliding block internal combustion engine and internal combustion engine
  • Piston for double-stroke crank round sliding block internal combustion engine and internal combustion engine
  • Piston for double-stroke crank round sliding block internal combustion engine and internal combustion engine

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Embodiment Construction

[0036] Please see image 3 , which is a half-sectional view of a piston used in a two-stroke single-cylinder gasoline engine provided by the first embodiment of the present invention.

[0037]The piston includes two parts, a crown 1 and a piston seat 2, which are made separately and connected into a whole through a connecting structure. The specific connection structure may be screwed or welded. It is best to use a connection with a certain degree of freedom, so that the relative position of the crown 1 and the piston seat 2 can be adjusted to a certain extent, reducing the stress on the two parts during processing. Concentricity requirements.

[0038] The role of the crown 1 is equivalent to the piston in the commonly used crank-link mechanism engine, and the role of the piston seat 2 has two: first, the piston seat 2 provides accommodating holes for the installation of the slider; secondly, the piston seat 2 Piston seat 2 is also the scavenging piston of two-stroke engine ...

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Abstract

The invention discloses a piston for a double-stroke crank round sliding block internal combustion engine, which comprises a crown part and a piston seat, wherein the crown part comprises a piston top, a piston ring band and a baffle plate which is extended downwards from the piston ring band and is used for shading an air port; the outer diameter face of the baffle plate is matched with the inner diameter face of a cylinder and is unfolded at a set angle in the circumference direction, and the angle can meet the requirement of shading the air port; a round sliding block accommodating hole for mounting a round sliding block is formed on the piston seat; two guide side plates which are extended downwards in the axial direction are symmetrically arranged on the piston ring band; and the outer diameter faces of the guide side plates can be matched with the inner wall of the cylinder. Compared with the prior art, the piston provided by the invention is provided with the baffle plate for shading the air port, and the baffle plate is only extended at a certain angle in the circumference direction and can be designed in a thinner mode, so that the quality of the piston cannot be obviously improved by the baffle plate, and the crank round sliding block engine has the advantage of keeping relatively low reciprocation inertia. In a preferable scheme, scavenging efficiency is improved by a specially arranged scavenging piston.

Description

[0001] This application is a divisional application of the invention patent application with the same name with the application date of June 10, 2009 and the application number of 200910087192.3. technical field [0002] 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 [0003] 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. [0004] Due t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02F3/00F02B25/20
CPCY02T10/146Y02T10/12
Inventor 黎明黎正中
Owner BEIJING SINOCEP ENGINE TECH
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