CN209129756U - A kind of internal combustion engine - Google Patents

Abstract

The utility model discloses a kind of internal combustion engines, piston only (1) including being equipped with installation through-hole, it is arranged on the outside of the piston only (1) and is fixed with link block (11), piston head (2) are installed in the upper surface of the link block (11), the lower end surface of the piston head (2) is equipped with cavity, and upper surface includes one section of flat face (21) and one section of flexure plane (22)；Compression (23) and an oil ring groove (24) there are two being set on the lateral wall of the piston head (2).The transmitting that link block is convenient for power is arranged in the utility model, and the squish plane and combustion chamber concave surface that piston head is formed improve efficiency of combustion, reduce vibration, reduce abrasion；The cavity structure of piston head is conducive to improve radiating efficiency and structural strength, avoids interference wear while reasonable loss of weight, simple and compact for structure.

Description

A kind of internal combustion engine

Technical field

The utility model relates to technical field of internal combustion engines, in particular to a kind of internal combustion engine.

Background technique

For the opposed piston internal combustion engine using opposite crank link mechanism, during reciprocating motion of the pistons, Cylinder internal combustion strength can resolve into the lateral pressure of the connecting rod power and vertical gas cylinder sleeve along connecting rod direction after acting on piston, right Piston is set to act on the lateral pressure of cylinder jacket two sides so that traditional crank connecting-rod mechanism type opposed pistons two-stroke internal combustion engine is in work Vibration is generated around inner dead point center during work, piston component and small end of connecting rod do linear reciprocating motion in the cylinder and can generate Reciprocal inertia force, and the crank, crank-pin and big end that deviate crankshaft center line are circled around crankshaft center line, can be generated Rotating inertia force can make internal combustion engine generate violent vibration in the synergy of reciprocal inertia force and rotating inertia force, while Increase the deformation and the degree of wear of internal combustion engine parts.

Utility model content

Vibration can be reduced the technical problem to be solved by the present invention is to provide a kind of, reduce internal combustion engine component wear journey The internal combustion engine of degree.

The technical solution of the utility model is as follows:

A kind of internal combustion engine, the piston only including being equipped with installation through-hole are arranged solid on the outside of the piston only Surely there is link block, the top of the piston only is emerged the plane where link block upper surface；It is solid in the upper surface of the link block Equipped with piston head, the lower end surface of the piston head is equipped with cavity, and upper surface includes one section of flat face and one section of flexure plane, described The cavity for emitting outlet and protruding into piston head of piston only；Compression there are two being set on the lateral wall of the piston head, at two The lower part of the compression corresponds to and is additionally provided with an oil ring groove at the lateral wall position of piston head.

Using the above structure, the eccentric shoe on crank mechanism is mounted in installation through-hole, the two energy relative rotation is sliding Dynamic, the bootable piston of the lateral wall of link block is reciprocating in cylinder, can reduce vibration, reduces abrasion；Piston only and Piston head is that separate machined is fixed together again, that is, production is facilitated to substantially reduce the weight of piston again, piston head it is upper End face is provided with flat face and flexure plane, since the utility model is to be applied to opposed piston internal combustion engine, that is, be that there are two living Plug is oppositely arranged, wherein the flat face of two pistons forms a squish plane in opposite directions, guarantees that opposed pistons moves to inner dead point Nearby there is stronger squish flow；The flexure plane of two pistons forms combustion chamber concave surface in opposite directions, and the axial direction of combustion chamber concave surface is Cylindrical structure, when guaranteeing that opposed pistons is moved near inner dead point, cooperation cylinder jacket wall surface composition has the combustion of smaller surface to volume ratio Burn cell structure；The cavity structure of piston head can improve the heat dissipation performance of piston head, and the top of piston only is protruded into cavity and increased The integrality of strong piston structure, while reducing the gap between associated components, it can also reduce vibration, avoid interfering mill Damage；Compression and oil ring groove are then for carrying out striking off for the sealing of combustion gas and cylinder sleeve machine oil in cylinder, easy to process, structure letter It is single, it is practical.

In order to avoid rotation interference, while being conducive to the flowing of machine oil, preferably, corresponding to piston sheet on the link block At the position at the left and right both ends of body, it is symmetrically arranged with two intermediate inclines, the inner sidewall and piston only lateral wall of the intermediate incline Corresponding position abut.

For the ease of processing, installation gap is reduced, preferably, the upper end of the intermediate incline and link block are integrated into Type is made.

In order to keep welding more firm, safety in utilization and reliability are improved, preferably, the corresponding installation of the link block is logical The aperture location in hole is equipped with up-narrow and down-wide opening, and the section of the opening is curved surface arcuate structure wide at the top and narrow at the bottom.

In order to mitigate the weight of link block, also reduce the weight of piston therewith, preferably, in the intermediate incline Portion is equipped with the " V " shape slot that Open Side Down.

The utility model has the advantages that the utility model setting link block is convenient for the transmitting of power, the squish plane and combustion that piston head is formed Room concave surface is burnt, efficiency of combustion is improved, reduces vibration, reduce abrasion；The cavity structure of piston head, in the same of reasonable loss of weight When, be conducive to improve radiating efficiency and structural strength, avoid interference wear, it is simple and compact for structure.

Detailed description of the invention

Fig. 1 is the mounting structure schematic diagram of the utility model.

Fig. 2 is the mounting structure schematic diagram of piston only and link block.

Fig. 3 is the main view of Fig. 1.

Fig. 4 is the dextrad view of Fig. 3.

Fig. 5 is the usage state diagram of the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing.

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the utility model is made of the piston only 1 etc. for being equipped with installation through-hole, It is arranged in the outside of the piston only 1 and is fixed with link block 11, the aperture location of the corresponding installation through-hole of the link block 11 It is equipped with up-narrow and down-wide opening, the section of the opening is curved surface arcuate structure wide at the top and narrow at the bottom；On the link block 11 At the position at the corresponding left and right both ends of piston only 1, be symmetrically arranged with two intermediate inclines 12, the upper end of the intermediate incline 12 with Link block 11, which is integrally formed, to be made, and the inner sidewall of the intermediate incline 12 is abutted with the corresponding position of 1 lateral wall of piston only；? The middle part of the intermediate incline 12 is equipped with the " V " shape slot that Open Side Down.

The top of the piston only 1 is emerged the plane where 11 upper surface of link block；In the upper surface of the link block 11 It is installed with piston head 2, the lower end surface of the piston head 2 is equipped with cavity, and upper surface includes one section of flat face 21 and one section of bending Face 22, the cavity for emitting outlet and protruding into piston head 2 of the piston only 1；Gas there are two being set on the lateral wall of the piston head 2 Annular groove 23 is additionally provided with an oil ring groove 24 at the lower part of two compressions 23, the lateral wall position of corresponding piston head 2.

The application method of the utility model is as follows:

As shown in Fig. 1 to Fig. 5, the eccentric shoe (not indicating) on crank mechanism is mounted in installation through-hole, the two energy The aperture location of relative rotational sliding, the corresponding installation through-hole of link block 11 is equipped with up-narrow and down-wide opening, the opening Section is curved surface arcuate structure wide at the top and narrow at the bottom, and bootable piston is reciprocating in cylinder, can reduce vibration, reduces mill Damage, the setting of intermediate incline 12 is avoided that rotation interference, in addition, the middle part of intermediate incline 12 is equipped with the " V " shape slot that Open Side Down, Alleviate the weight of piston entirety.

Piston only 1 and piston head 2 are that separate machined is fixed together again, that is, production is facilitated to substantially reduce work again The weight of plug, the upper surface of piston head 2 are provided with flat face 21 and flexure plane 22, since the utility model is to be applied to opposed work Piston type internal-combustion engine, that is, be oppositely arranged there are two piston, wherein it is flat that the flat face 21 of two pistons forms a squish in opposite directions Face guarantees that opposed pistons moves to inner dead point and nearby has stronger squish flow；The flexure plane 22 of two pistons forms a combustion in opposite directions Room concave surface is burnt, and the axial direction of combustion chamber concave surface is cylindrical structure, when guaranteeing that opposed pistons is moved near inner dead point, cooperates cylinder The chamber structure that wall surface composition has smaller surface to volume ratio is covered, efficiency of combustion is improved.

The cavity structure of piston head 2 can improve the heat dissipation performance of piston head 2, and the top of piston only 1 is protruded into cavity simultaneously Enhance the integrality of piston structure, while reducing the gap between associated components, can also reduce vibration, avoid interfering mill Damage.

Compression 23 and oil ring groove 24 are then for carrying out striking off for the sealing of combustion gas and cylinder sleeve machine oil in cylinder, processing side Just, of simple structure and strong practicability.

The non-description section of the utility model is consistent with the prior art, and therefore not to repeat here.

The above is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all benefits The equivalent structure made by the utility model specification and accompanying drawing content is directly or indirectly used in other relevant technology necks Domain, similarly within the scope of patent protection of the utility model.

Claims (5)

1. a kind of internal combustion engine, the piston only (1) including being equipped with installation through-hole, it is characterised in that: in the piston only (1) it is arranged on the outside of and is fixed with link block (11), the top of the piston only (1) is emerged flat where link block (11) upper surface Face；It is installed with piston head (2) in the upper surface of the link block (11), the lower end surface of the piston head (2) is equipped with cavity, upper end Face includes one section of flat face (21) and one section of flexure plane (22), and the outlet that emits of the piston only (1) protrudes into piston head (2) Cavity；It sets on the lateral wall of the piston head (2) there are two compression (23), in the lower part of two compressions (23), An oil ring groove (24) is additionally provided at the lateral wall position of corresponding piston head (2).

2. a kind of internal combustion engine according to claim 1, it is characterised in that: correspond to piston on the link block (11) At the position at ontology (1) left and right both ends, be symmetrically arranged with two intermediate inclines (12), the inner sidewall of the intermediate incline (12) with The corresponding position of piston only (1) lateral wall abuts.

3. a kind of internal combustion engine according to claim 2, it is characterised in that: the upper end of the intermediate incline (12) and company It connects block (11) and is integrally formed and be made.

4. a kind of internal combustion engine according to claim 1, it is characterised in that: the corresponding installation through-hole of the link block (11) Aperture location be equipped with up-narrow and down-wide opening, the section of the opening is curved surface arcuate structure wide at the top and narrow at the bottom.

5. a kind of internal combustion engine according to claim 3, it is characterised in that: set in the middle part of the intermediate incline (12) There is the " V " shape slot that Open Side Down.