CN210889138U

CN210889138U - Mounting structure and engine of piston cooling nozzle

Info

Publication number: CN210889138U
Application number: CN201921725688.4U
Authority: CN
Inventors: 高井辉; 王抒楠; 郭超; 吴恒博; 白洪江; 谭昭波
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-06-30
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to the technical field of engines, a piston cooling nozzle's mounting structure and engine is disclosed. The mounting structure of the piston cooling nozzle comprises a cylinder body, the cylinder body comprises a main bearing seat, a convex block is arranged on the main bearing seat, the convex block and the main bearing seat are integrally formed, a main bearing oil duct is further arranged on the main bearing seat, and the convex block is arranged right opposite to the main bearing oil duct. The utility model discloses a mounting structure of piston cooling nozzle adds the lug on main bearing seat and does not influence the arrangement of other structures, and for the engine that does not need to carry out forced cooling to the piston, lug and main bearing seat integrated into one piece set up can play the effect of strengthening the main bearing seat; for an engine needing to forcibly cool the piston, quick upgrading and transformation of the cylinder body can be realized only by processing mounting holes in the convex block and the main bearing seat and additionally arranging the piston cooling nozzle at the mounting hole, and the engine is simple in processing process and low in transformation cost.

Description

Mounting structure and engine of piston cooling nozzle

Technical Field

The utility model relates to the technical field of engines, especially, relate to a piston cooling nozzle's mounting structure and engine.

Background

The engine performance can be obviously improved by increasing the power per liter of the engine under the condition of keeping the displacement of the engine unchanged, but the thermal load of the engine is increased at the same time. For engines with high thermal load, it is generally necessary to mount a piston cooling nozzle on the cylinder block to forcibly cool the piston. In the existing engine, for example, a supercharged engine, once a piston cooling nozzle needs to be additionally arranged on the original structure, the installation structure of the piston cooling nozzle needs to be redesigned, and the modification cost is high.

SUMMERY OF THE UTILITY MODEL

Based on it is above, an object of the utility model is to provide a piston cooling nozzle's mounting structure, when addding piston cooling nozzle, need not redesign piston cooling nozzle's mounting structure, only need reform transform the upgrading that can realize the cylinder block fast at original structural, reform transform cost reduction.

The embodiment also provides an engine, and when the piston needs to be forcibly cooled, the engine is simple to modify and low in modification cost.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a piston cooling nozzle's mounting structure, includes the cylinder block, the cylinder block includes main bearing seat, the last lug that is equipped with of main bearing seat, the lug with main bearing seat is integrated into one piece, the lug is located main bearing seat's the outside and the one end that is close to the piston, the lug is used for increasing integrated into one piece's thickness with can the lug with the lug is connected processing installation piston cooling nozzle's mounting hole on the main bearing seat, still be equipped with the main bearing oil duct on the main bearing seat, the lug is just right the main bearing oil duct sets up.

As an optimal scheme of the mounting structure of the piston cooling nozzle, mounting holes are formed in the convex block and the main bearing seat, the mounting holes are communicated with the main bearing oil passage, the mounting holes are stepped holes, the central axis of each mounting hole is arranged at an included angle with the vertical direction, and the mounting holes are configured to mount the piston cooling nozzle.

As an optimal scheme of the mounting structure of the piston cooling nozzle, the mounting holes comprise a first mounting hole, a second mounting hole and a third mounting hole, the first mounting hole, the second mounting hole and the third mounting hole are distributed in sequence along the direction of keeping away from the main bearing shell, and the diameters of the first mounting hole, the second mounting hole and the third mounting hole are reduced in sequence.

As a preferred scheme of the mounting structure of the piston cooling nozzle, the first mounting hole and the third mounting hole are unthreaded holes, and an internal thread is arranged on the inner wall of the second mounting hole.

As a preferable configuration of the mounting structure of the piston cooling nozzle, the first mounting hole and the second mounting hole are provided in the main bearing housing, and the third mounting hole is provided in the projection.

As a preferable mode of the mounting structure of the piston cooling nozzle, the projection is a trapezoidal block.

An engine comprises the mounting structure of the piston cooling nozzle and a piston, wherein a cylinder hole is formed in a cylinder block, and the piston is located in the cylinder hole and can reciprocate along the direction of the central axis of the cylinder hole.

As a preferred scheme of the engine, the engine further comprises a piston cooling nozzle, steps are arranged on the piston cooling nozzle, mounting holes are formed in the protruding block and the main bearing seat, the piston cooling nozzle is connected in the mounting holes in a threaded mode, and the central axis of the piston cooling nozzle coincides with the central axis of the mounting holes.

As a preferable scheme of the engine, the engine further comprises a main bearing shell, the main bearing shell is installed in the main bearing seat, and a communication hole communicated with the oil liquid cavity is further formed in the main bearing shell.

The utility model has the advantages that:

the utility model discloses a lug that mounting structure of piston cooling nozzle add on main bearing seat does not influence the arrangement of other structures, to the lower naturally aspirated engine of thermal load, need not carry out forced cooling to the piston, need not process the mounting hole on lug and the main bearing seat, lug and the integrated into one piece setting of main bearing seat can play the effect of strengthening the main bearing seat; for an engine with higher heat load, the piston needs to be forcibly cooled, only mounting holes need to be processed on the lug and the main bearing seat, and the piston cooling nozzle is additionally arranged at the mounting hole, so that the cylinder block can be rapidly upgraded and reformed, the processing technology is simple, and the reforming cost is low.

The utility model discloses a lug that the engine was add on main bearing seat neither influences the lower naturally aspirated engine's of heat load operation, can also satisfy the cooling to the piston of the higher engine of heat load simultaneously, specifically, through add the mounting hole on lug and main bearing seat and increase piston cooling nozzle in mounting hole department to the realization is to the forced cooling of piston.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a sectional view of a partial structure of a mounting structure of a piston cooling nozzle according to an embodiment of the present invention in one direction;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a sectional view of a portion of a mounting structure of a piston cooling nozzle according to an embodiment of the present invention, taken in another direction;

fig. 4 is a partial enlarged view of fig. 3 at B.

In the figure:

1. a cylinder block; 11. a main bearing housing; 111. a main bearing oil passage; 2. a bump; 3. mounting holes; 4. a piston; 5. a piston cooling nozzle; 6. a main shaft bushing; 61. and a communicating hole.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

This embodiment provides a piston cooling nozzle's mounting structure, as shown in fig. 1 to 4, including cylinder block 1, cylinder block 1 includes main bearing seat 11, is equipped with lug 2 on main bearing seat 11, lug 2 and main bearing seat 11 are integrated into one piece, lug 2 locates main bearing seat 11's the outside and is close to piston 4's one end, lug 2 is used for increasing integrated into one piece's thickness in order to process the mounting hole 3 of installation piston cooling nozzle 5 on lug 2 and the main bearing seat 11 of being connected with lug 2, promptly the utility model discloses a specific embodiment, can set up mounting hole 3 on lug 2 and the main bearing seat 11 of being connected with lug 2, also can not set up mounting hole 3, specifically set up according to actual need. The main bearing seat 11 is further provided with a main bearing oil passage 111, and the convex block 2 is arranged opposite to the main bearing oil passage 111.

The mounting structure of the piston cooling nozzle provided by the embodiment has the advantages that the arrangement of other structures is not influenced by the lug 2 additionally arranged on the main bearing seat 11, the piston 4 does not need to be forcibly cooled for the naturally aspirated engine with low thermal load, the mounting hole 3 does not need to be processed on the lug 2 and the main bearing seat 11, and the lug 2 and the main bearing seat 22 are integrally formed to play a role in reinforcing the main bearing seat 11; for an engine with higher heat load, the piston 4 needs to be forcibly cooled, and the cylinder block 1 can be quickly upgraded and reformed only by processing the mounting hole 3 on the lug 2 and the main bearing seat 11 corresponding to the lug 2 and additionally arranging the piston cooling nozzle 5 at the mounting hole 3, so that the processing process is simple and the reforming cost is low.

Specifically, as shown in fig. 2 and 4, the mounting hole 3 is provided on the boss 2 and the main bearing housing 11 of the present embodiment, the mounting hole 3 is communicated with the main bearing oil passage 111, the mounting hole 3 is a stepped hole, a central axis of the mounting hole 3 is disposed at an angle to the vertical direction, and the mounting hole 3 is configured to mount the piston cooling nozzle 5. Further, the mounting hole 3 includes a first mounting hole, a second mounting hole and a third mounting hole, the first mounting hole and the second mounting hole are disposed on the main bearing seat 11, the third mounting hole is disposed on the projection 2, and the first mounting hole, the second mounting hole and the third mounting hole are sequentially arranged along a direction away from the main bearing shell 6. The connecting position between the second mounting hole and the third mounting hole is provided with a step, the diameters of the first mounting hole, the second mounting hole and the third mounting hole are sequentially reduced, namely the cross-sectional areas of the first mounting hole, the second mounting hole and the third mounting hole are sequentially reduced. The step-shaped structure is matched with the step on the outer surface of the piston cooling nozzle 5 and used for limiting the piston cooling nozzle 5, so that the piston cooling nozzle 5 is more convenient and faster to mount and position on the main bearing seat 11. The first mounting hole and the third mounting hole are unthreaded holes, and internal threads are arranged on the inner wall of the second mounting hole.

It should be noted that the case of the present embodiment in which the mounting holes 3 are provided on the boss 2 and the main bearing seat 11 is suitable for an engine in which the thermal load is high and the piston 4 needs to be forcibly cooled, and of course, in other embodiments of the present invention, the mounting holes 3 may not be provided on the boss 2 and the main bearing seat 11, and the cylinder block 1 is suitable for an engine in which natural air suction is performed, the thermal load is low, and the piston 4 does not need to be cooled.

The present embodiment also provides an engine including the mounting structure of the piston cooling nozzle according to the present embodiment and a piston 4, as shown in fig. 1 and 3, in which a cylinder hole is provided in a cylinder block 1, and the piston 4 is located in the cylinder hole and can reciprocate along a central axis direction of the cylinder hole. The engine provided by the embodiment is additionally provided with the lug 2 on the main bearing seat 11, so that the operation of a naturally aspirated engine with low heat load is not influenced, and the cooling of the piston 4 of the engine with high heat load can be simultaneously met, specifically, the mounting hole 3 is additionally arranged on the lug 2 and the main bearing seat 11, and the piston cooling nozzle 5 is additionally arranged at the mounting hole 3, so that the forced cooling of the piston 4 is realized.

The engine of this embodiment further includes a piston cooling nozzle 5, as shown in fig. 2 and 4, the piston cooling nozzle 5 is provided with a step, the mounting hole 3 on the boss 2 and the main bearing seat 11 can be provided with the piston cooling nozzle 5, the outer surface of the piston cooling nozzle 5 is provided with an external thread matched with the internal thread in the second mounting hole, the piston cooling nozzle 5 is screwed into the mounting hole 3, and the central axis of the piston cooling nozzle 5 coincides with the central axis of the mounting hole 3.

When the piston cooling nozzle 5 is installed, firstly, the end with the smaller cross section area of the piston cooling nozzle 5 sequentially extends into the first installation hole and the second installation hole of the main bearing seat 11, then the piston cooling nozzle 5 is screwed into the third installation hole of the lug 2 from bottom to top, wherein the installation position of the piston cooling nozzle 5 is limited by the step-shaped structure between the second installation hole and the third installation hole, so that the positioning of the piston cooling nozzle 5 is more accurate.

Further, the engine of the present embodiment further includes a main bearing shell 6 and a crank link mechanism (not shown), as shown in fig. 1 to 4, the main bearing shell 6 is mounted in the main bearing housing 11, and a communication hole 61 is provided in the main bearing shell 6 in order to allow the oil to lubricate the crank link mechanism, and as shown in fig. 4, the communication hole 61 communicates with the main bearing oil passage 111. Specifically, the communication hole 61 of the present embodiment is a circular hole, and in order to make the oil in the main bearing oil passage 111 lubricate the crank mechanism better, the central axis of the communication hole 61 coincides with the central axis of the main bearing oil passage 111. Of course, in other embodiments of the present invention, the central axis of the circular hole is not limited to the case of coinciding with the central axis of the main bearing oil passage 111 in this embodiment, and the central axis of the circular hole may not coincide with the central axis of the main bearing oil passage 111, and the shape of the communication hole 61 is not limited to the circular hole in this embodiment, and may be a communication hole 61 of another shape, and the shape and the set position of the communication hole 61 are specifically processed according to actual needs.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. The utility model provides a mounting structure of piston cooling nozzle, a serial communication port, includes cylinder block (1), cylinder block (1) includes main bearing seat (11), be equipped with lug (2) on main bearing seat (11), lug (2) with main bearing seat (11) are integrated into one piece, lug (2) are located the outside of main bearing seat (11) and be close to the one end of piston (4), lug (2) are used for increasing integrated into one piece's thickness is in order to be in lug (2) and with lug (2) are connected processing mounting hole (3) of installation piston cooling nozzle (5) on main bearing seat (11), still be equipped with main bearing oil duct (111) on main bearing seat (11), lug (2) are just right main bearing oil duct (111) set up.

2. The mounting structure of the piston cooling nozzle according to claim 1, wherein mounting holes (3) are formed in the boss (2) and the main bearing seat (11), the mounting holes (3) are communicated with the main bearing oil passage (111), the mounting holes (3) are stepped holes, a central axis of the mounting holes (3) is arranged at an angle to a vertical direction, and the mounting holes (3) are configured to mount the piston cooling nozzle (5).

3. The mounting structure of a piston cooling nozzle according to claim 2, wherein the mounting holes (3) include a first mounting hole, a second mounting hole, and a third mounting hole, the first mounting hole, the second mounting hole, and the third mounting hole are sequentially distributed in a direction away from the main bearing shell (6), and diameters of the first mounting hole, the second mounting hole, and the third mounting hole are sequentially reduced.

4. The mounting structure for a piston cooling nozzle according to claim 3, wherein said first mounting hole and said third mounting hole are bores, and an inner wall of said second mounting hole is provided with an internal thread.

5. A mounting structure for a piston cooling nozzle according to claim 3, wherein said first mounting hole and said second mounting hole are provided in said main bearing housing (11), and said third mounting hole is provided in said boss (2).

6. A mounting structure of a piston cooling nozzle according to claim 1, characterized in that the projection (2) is a trapezoidal block.

7. An engine comprising the mounting structure of a piston cooling nozzle according to any one of claims 1 to 6 and a piston (4), wherein a cylinder bore is provided on the cylinder block (1), and the piston (4) is located in the cylinder bore and is capable of reciprocating in the direction of the central axis of the cylinder bore.

8. The engine according to claim 7, characterized in that the engine further comprises a piston cooling nozzle (5), the piston cooling nozzle (5) is provided with a step, the boss (2) and the main bearing seat (11) are provided with mounting holes (3), the piston cooling nozzle (5) is screwed into the mounting holes (3), and the central axis of the piston cooling nozzle (5) coincides with the central axis of the mounting holes (3).

9. The engine according to claim 7, characterized in that the engine further comprises a main bearing shell (6), the main bearing shell (6) is mounted in the main bearing seat (11), and the main bearing shell (6) is further provided with a communication hole (61) communicated with the main bearing oil passage (111).