CN216951251U - Connecting rod mechanism for cooling automobile engine piston - Google Patents
Connecting rod mechanism for cooling automobile engine piston Download PDFInfo
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- CN216951251U CN216951251U CN202220115595.5U CN202220115595U CN216951251U CN 216951251 U CN216951251 U CN 216951251U CN 202220115595 U CN202220115595 U CN 202220115595U CN 216951251 U CN216951251 U CN 216951251U
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- cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
A connecting rod mechanism for cooling an automobile engine piston comprises a connecting rod, a connecting rod tile, a connecting rod bushing and a plunger valve, wherein a first through hole and a second through hole are formed in two ends of the connecting rod respectively; the plunger valve passes the tip of connecting rod and stretches into and contact in the connecting rod bush with the second through-hole in, and the periphery of connecting rod tile is equipped with the first oil groove that sets up along the axial for let in machine oil, be equipped with in the connecting rod and communicate in the oil duct of first through-hole and second through-hole, the one end of oil duct communicates in first oil groove, and the other end of oil duct communicates in the plunger valve, and the plunger valve is used for the machine oil blowout in the oil duct. The utility model injects the engine oil into the inner cavity of the piston through the connecting rod and the plunger valve, and the injected engine oil can swing back and forth at the air inlet and outlet sides of the inner cavity of the piston along with the swinging of the connecting rod, and can inject the engine oil into the whole inner cavity of the piston, thereby being beneficial to the integral cooling of the piston and simultaneously improving the temperature difference at the air inlet and outlet sides of the piston.
Description
Technical Field
The utility model belongs to the field of automobile manufacturing, and particularly relates to a connecting rod mechanism for cooling an automobile engine piston.
Background
The piston is the heart of an automobile engine, and in the working cycle of the engine, the piston is used for bearing gas pressure and driving a crankshaft to rotate by a connecting rod through a piston pin, so that chemical energy is converted into mechanical energy to be output outwards. The piston works under the conditions of high temperature, high pressure, high speed and poor lubrication, bears alternating mechanical load and thermal load, and is one of the most severe key parts in the engine under the worst working conditions. In order to cool the piston, oil is injected into the piston cavity to remove heat. The existing piston cooling adopts a mode that a piston cooling nozzle sprays engine oil to an inner cavity of a piston to take away heat, the installation position of the cooling nozzle needs to be considered, and the target hitting position of the nozzle is fixed. Sometimes, for arrangement, the piston cooling nozzle is arranged on the air inlet side, so that the piston cooling is not facilitated, and a large temperature difference exists between the air inlet side and the air outlet side of the piston. And the arrangement of the cooling nozzle to the exhaust side results in an increase in the temperature of the engine oil, without utilizing the overall cooling of the engine. When crankshaft offset techniques are used, the cooling nozzles may be at risk of interfering with the connecting rod beam or piston. Therefore, a connecting rod mechanism for cooling the piston of the automobile engine is needed, which can lead the injected engine oil to swing back and forth at the air inlet and the air outlet of the inner cavity of the piston along with the swing of the piston connecting rod, and is beneficial to the integral cooling of the piston.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a connecting rod mechanism for cooling an automobile engine piston, which can lead the injected engine oil to swing back and forth at the air inlet and the air outlet of the piston inner cavity along with the swing of a piston connecting rod, and is beneficial to the integral cooling of the piston.
In order to achieve the purpose, the utility model provides a connecting rod mechanism for cooling a piston of an automobile engine, which comprises a connecting rod, a connecting rod tile, a connecting rod bushing and a plunger valve, wherein a first through hole and a second through hole are respectively formed in two ends of the connecting rod;
the plunger valve penetrates through the end part of the connecting rod and extends into the second through hole and contacts with the connecting rod bushing, a first oil groove arranged along the axial direction is formed in the periphery of the connecting rod tile and used for allowing engine oil to enter, an oil duct communicated with the first through hole and the second through hole is formed in the connecting rod, one end of the oil duct is communicated with the first oil groove, the other end of the oil duct is communicated with the plunger valve, and the plunger valve is used for ejecting the engine oil in the oil duct.
Preferably, the crankshaft further comprises a connecting rod, wherein the connecting rod is in an I-beam shape and comprises a big head end and a small head end, the first through hole is formed in the big head end, the second through hole is formed in the small head end and is used for being connected to a piston pin, the crankshaft comprises a crankshaft neck, and the crankshaft neck is inserted into the connecting rod shoe;
the connecting rod tile is provided with a first oil hole which is arranged along the radial direction, the first oil hole is formed in one end, deviating from the oil duct, of the first oil groove, a crankshaft oil hole is formed in the crankshaft neck and communicated with the first oil hole, and engine oil enters the first oil groove and the oil duct through the crankshaft oil hole and the first oil hole in sequence.
Preferably, the diameter of the oil passage is 2-4 mm.
Preferably, the first oil hole is a rectangular hole, and has a length of 4-8mm and a width of 1-3 mm.
Preferably, an annular second oil groove is formed in the inner wall of the second through hole, and the oil passage and the plunger valve are respectively communicated with the second oil groove.
Preferably, a small end of the connecting rod is provided with a plunger valve hole arranged along the radial direction, the plunger valve hole is communicated with the second oil groove and the periphery of the connecting rod, and the plunger valve is arranged in the plunger valve hole.
Preferably, the plunger valve comprises a shell, a guide cylinder, a plunger and a spring,
an oil inlet is formed in the bottom of the shell, a first oil outlet is formed in the top of the shell, and the oil inlet is communicated with the second oil groove;
the guide cylinder is arranged in the shell and forms an oil cavity with the inner wall of the shell, a cavity is arranged in the guide cylinder, a second oil outlet is arranged at the top of the cavity and is communicated with the oil cavity, and the second oil outlet is communicated with the first oil outlet;
the plunger is inserted into the cavity, and the spring is arranged between the top of the cavity and the plunger;
the plunger is movable toward the second oil outlet under pressure of the oil of the second oil sump to open the oil inlet and movable away from the second oil outlet under action of the spring to close the oil inlet.
Preferably, an oil through hole penetrating in the radial direction is formed in the side wall of the guide cylinder and is used for communicating the cavity and the oil chamber.
Preferably, the first oil outlet is a stepped hole, the guide cylinder comprises a first section, a second section and a third section which are sequentially connected, the periphery of the first section is clamped in the stepped hole, the second section is used for being tightly attached to the inner wall of the shell, and the third section and the inner wall of the shell form the oil cavity.
Preferably, the oil inlet is a stepped hole, and the plunger can be clamped in a large hole of the stepped hole and close a small hole of the stepped hole.
The utility model relates to a connecting rod mechanism for cooling an automobile engine piston, which has the beneficial effects that: the machine oil is sprayed to the inner cavity of the piston through the connecting rod and the plunger valve, the sprayed machine oil can swing back and forth on the air inlet and outlet sides of the inner cavity of the piston along with the swinging of the connecting rod, the machine oil can be sprayed to the whole inner cavity of the piston, the integral cooling of the piston is facilitated, and the temperature difference between the air inlet and outlet sides of the piston is improved.
Additional features and advantages of the utility model will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
FIG. 1 is a schematic diagram of a connecting rod mechanism for cooling a piston of an automotive engine according to an exemplary embodiment of the present invention;
FIG. 2 illustrates a schematic cross-sectional view of a plunger valve in a linkage mechanism for cooling a piston of an automotive engine in accordance with an exemplary embodiment of the present invention;
fig. 3 shows a schematic view of a crankshaft in a connecting rod mechanism for cooling a piston of an automobile engine according to an exemplary embodiment of the present invention.
Description of reference numerals:
1. the oil pump comprises a connecting rod, a first through hole 11, a second through hole 12, an oil channel 13, a second oil groove 14, a connecting rod tile 2, a connecting rod bush 3, a plunger valve 4, a shell 41, an oil inlet 411, a first oil outlet 412, an oil chamber 413, a guide cylinder 42, a second oil outlet 421, an oil hole 422, a plunger 43, a spring 44, a crankshaft 5, a crankshaft neck 51 and a crankshaft oil hole 52.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.
In order to solve the problems in the prior art, the utility model provides a connecting rod mechanism for cooling a piston of an automobile engine, which comprises a connecting rod 1, a connecting rod bush 2, a connecting rod bushing 3 and a plunger valve 4, wherein a first through hole 11 and a second through hole 12 are respectively arranged at two ends of the connecting rod 1, the connecting rod bush 2 is inserted into the first through hole 11, and the connecting rod bushing 3 is inserted into the second through hole 12;
The utility model relates to a connecting rod mechanism for cooling a piston of an automobile engine, which sprays engine oil to an inner cavity of the piston through a connecting rod 1 and a plunger valve 4, the sprayed engine oil can swing back and forth at the air inlet and outlet sides of the inner cavity of the piston along with the swing of the connecting rod 1, and the engine oil can be sprayed to the whole inner cavity of the piston, thereby being beneficial to the whole cooling of the piston and simultaneously improving the temperature difference between the air inlet and outlet sides of the piston
As shown in fig. 3, the connecting rod mechanism further includes a crankshaft 5, the connecting rod 1 is i-beam shaped and includes a large head end and a small head end, the first through hole 11 is disposed at the large head end, the second through hole 12 is disposed at the small head end and is used for connecting to a piston pin, the crankshaft 5 includes a crankshaft journal 51, and the crankshaft journal 51 is inserted into the connecting rod shoe 2;
the connecting rod tile 2 is provided with a first oil hole which is arranged along the radial direction, the first oil hole is arranged at one end, deviating from the oil duct 13, of the first oil groove, a crankshaft oil hole 52 is formed in the crankshaft neck 51, the crankshaft oil hole 52 is communicated with the first oil hole, and engine oil sequentially passes through the crankshaft oil hole 52 and the first oil hole to enter the first oil groove and the oil duct 13.
The automobile engine piston is connected with the crankshaft 5 through the connecting rod 1, the piston is driven to move up and down through the rotation of the crankshaft 5, the crankshaft journal 51 of the crankshaft 5 is inserted into the connecting rod bush 2, the crankshaft oil hole 52 is formed in the crankshaft journal 51, and therefore when the crankshaft rotates, enough engine oil in the engine room can be guaranteed to enter the first oil hole through the crankshaft oil hole 52 all the time, and then enter the oil duct 13 through the first oil groove. A first oil hole, which is provided through a side wall of the connecting rod shoe 2 and which axially provides an outer circumference of the connecting rod shoe 2, and a first oil groove, which is used to allow engine oil transferred on the crankshaft to enter the first oil groove, are not shown, and the structure can be understood by those skilled in the art.
The diameter of the oil duct 13 is 2-4 mm.
In this embodiment, connecting rod 1 adopts I-beam hollow structure, increases the oil duct 13 of connecting rod 1 big head end and little head end, can avoid adding the oil groove at connecting rod bush 3 and lead to bearing insufficient wear, gets rid of the piston cooling nozzle in the structure, is favorable to optimizing the oil duct and arranges, can guarantee oil duct machine oil pressure simultaneously, improves the whole lubrication of engine, reduce cost.
In a preferred embodiment of the present application, the oil passage 13 may have a diameter of 3 mm.
In the embodiment, the first oil hole is a rectangular hole, the length of the first oil hole is 4-8mm, and the width of the first oil hole is 1-3 mm. In a preferred embodiment of the present application, the first oil hole is a rectangular hole having a length of 6mm and a width of 2mm, and the first oil groove has a width of 2mm and is disposed in alignment with the first oil hole, and in other embodiments of the present application, the first oil hole may be a circular hole.
The inner wall of the second through hole 12 is provided with an annular second oil groove 14, and the oil passage 13 and the plunger valve 4 are respectively communicated with the second oil groove 14. The second oil groove 14 is formed in the inner wall of the second through hole 12 of the connecting rod 1, so that oil passages are formed in the second oil groove 14 and the outer peripheral wall of the connecting rod bushing 3, abrasion caused by insufficient bearing capacity due to grooving of the connecting rod bushing 3 is avoided, and engine oil can enter the plunger valve 4 from the oil passage 13 through the second oil groove 14. In a preferred embodiment of the present application, the width of the second oil groove 14 may be 2 mm.
The small end of the connecting rod 1 is provided with a plunger valve hole which is arranged along the radial direction, the plunger valve hole is communicated with the second oil groove 14 and the periphery of the connecting rod 1, and the plunger valve 4 is arranged in the plunger valve hole.
In this application, increase plunger valve 4 at connecting rod 1's small-end, through plunger valve 4's opening pressure, reach the effect of the steerable opening pressure of piston cooling nozzle, oil-out machine oil leakage quantity when reducing low-speed simultaneously improves the whole lubrication of engine.
The plunger valve 4 includes a housing 41, a guide cylinder 42, a plunger 43 and a spring 44,
an oil inlet 411 is formed in the bottom of the shell 41, a first oil outlet 412 is formed in the top of the shell, and the oil inlet 411 is communicated with the second oil groove 14;
the guide cylinder 42 is arranged in the shell 41, an oil chamber 413 is formed between the guide cylinder 42 and the inner wall of the shell 41, a cavity is arranged in the guide cylinder 42, a second oil outlet 421 is arranged at the top of the cavity, the cavity is communicated with the oil chamber 413, and the second oil outlet 421 is communicated with the first oil outlet 412;
a plunger 43 is inserted in the chamber, and a spring 44 is arranged between the top of the chamber and the plunger 43;
the plunger 43 is movable toward the second oil outlet 421 to open the oil inlet 411 by the pressure of the oil of the second oil groove 14, and is movable away from the second oil outlet 421 to close the oil inlet 411 by the spring 44.
The side wall of the guide cylinder 42 is provided with an oil through hole 422 which penetrates in the radial direction, and the oil through hole 422 is used for communicating the chamber with the oil chamber 413.
In this embodiment, the housing 41 is fixed in the plunger valve hole through the external thread at the bottom, the oil hole is provided in the middle of the bottom end of the plunger 43, when the pressure of the engine oil reaches a certain value, in this embodiment, 2bar, when the engine oil enters the oil hole, the plunger 43 moves upward under the pressure of the engine oil to open the oil inlet 411, so that the engine oil enters the oil chamber 413, at this time, the spring 44 is compressed, and the engine oil in the oil chamber 413 enters the chamber of the guide cylinder 42 through the oil through hole 422 and is ejected from the second oil outlet 421;
when the pressure of the engine oil is less than 2bar, the plunger 44 moves downwards under the elasticity of the spring 44 to block the oil inlet 411, the engine oil cannot enter the oil cavity, the engine oil cannot be sprayed out, the opening pressure is controlled through the spring 44 in the plunger valve 4, and the engine oil sprayed out from the connecting rod 1 is ensured to reach a certain engine oil pressure, so that the oil leakage amount at a low rotating speed is reduced, and the integral lubrication of the engine is improved.
In this embodiment, second oil-out 421 is including the first hole section of connection, second hole section and third hole section, first hole section is the bell mouth, including macropore and aperture, the macropore of first hole section communicates with the cavity and the diameter that the diameter is less than the cavity, the aperture connection in second hole section of minimum of first hole section, the second hole section is the straight hole section, third hole section is the bell mouth equally, its major diameter end sets up towards first oil-out 412, can enlarge the range of spraying through this kind of structure spun machine oil, so as to do benefit to machine oil and spray to the whole inner chamber of piston.
The first oil outlet 412 is a stepped hole, the guide cylinder 42 includes a first section, a second section and a third section which are connected in sequence, the periphery of the first section is clamped in the stepped hole, the second section is used for being tightly attached to the inner wall of the housing 41, and the third section and the inner wall of the housing 41 form an oil chamber 413. In this embodiment, the second section and the housing 41 may be fixed by a threaded connection or an interference fit.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. A connecting rod mechanism for cooling an automobile engine piston is characterized by comprising a connecting rod (1), a connecting rod tile (2), a connecting rod bushing (3) and a plunger valve (4), wherein a first through hole (11) and a second through hole (12) are respectively formed in two ends of the connecting rod (1), the connecting rod tile (2) is inserted into the first through hole (11), and the connecting rod bushing (3) is inserted into the second through hole (12);
the plunger valve (4) penetrates through the end part of the connecting rod (1) to extend into the second through hole (12) and contact with the connecting rod bushing (3), a first oil groove arranged along the axial direction is formed in the periphery of the connecting rod tile (2) and used for introducing engine oil, an oil duct (13) communicated with the first through hole (11) and the second through hole (12) is formed in the connecting rod (1), one end of the oil duct (13) is communicated with the first oil groove, the other end of the oil duct (13) is communicated with the plunger valve (4), and the plunger valve (4) is used for ejecting the engine oil in the oil duct (13).
2. The connecting rod mechanism for cooling the piston of the automobile engine according to claim 1, further comprising a crankshaft (5), wherein the connecting rod (1) is in an I-beam shape and comprises a big end and a small end, the first through hole (11) is arranged at the big end, the second through hole (12) is arranged at the small end for connecting to a piston pin, the crankshaft comprises a crankshaft neck (51), and the crankshaft neck (51) is inserted into the connecting rod tile (2);
the connecting rod tile (2) is provided with a first oil hole which is arranged along the radial direction, the first oil hole is formed in one end, deviating from the oil duct (13), of the first oil groove, a crankshaft oil hole (52) is formed in the crankshaft neck (51), the crankshaft oil hole (52) is communicated with the first oil hole, and engine oil sequentially passes through the crankshaft oil hole (52) and the first oil hole to enter the first oil groove and the oil duct (13).
3. A connecting rod mechanism for cooling a piston of an automobile engine according to claim 2, characterized in that the diameter of the oil passage (13) is 2-4 mm.
4. The connecting rod mechanism for cooling the piston of the automobile engine according to claim 2, wherein the first oil hole is a rectangular hole having a length of 4-8mm and a width of 1-3 mm.
5. The connecting rod mechanism for cooling the piston of the automobile engine according to claim 2, wherein the inner wall of the second through hole (12) is provided with an annular second oil groove (14), and the oil passage (13) and the plunger valve (4) are respectively communicated with the second oil groove (14).
6. The connecting rod mechanism for cooling the automobile engine piston according to claim 5, characterized in that the small end of the connecting rod (1) is provided with a plunger valve hole arranged along the radial direction, the plunger valve hole is communicated with the second oil groove (14) and the periphery of the connecting rod (1), and the plunger valve (4) is arranged in the plunger valve hole.
7. A link mechanism for cooling the piston of an automobile engine according to claim 6, characterized in that the plunger valve (4) includes a housing (41), a guide cylinder (42), a plunger (43), and a spring (44),
an oil inlet (411) is formed in the bottom of the shell (41), a first oil outlet (412) is formed in the top of the shell, and the oil inlet (411) is communicated with the second oil groove (14);
the guide cylinder (42) is arranged in the shell (41), an oil cavity (413) is formed between the guide cylinder (42) and the inner wall of the shell (41), a cavity is arranged in the guide cylinder (42), a second oil outlet (421) is arranged at the top of the cavity, the cavity is communicated with the oil cavity (413), and the second oil outlet (421) is communicated with the first oil outlet (412);
the plunger (43) is inserted into the cavity, and the spring (44) is arranged between the top of the cavity and the plunger (43);
the plunger (43) is movable toward the second oil outlet (421) under the pressure of the oil of the second oil groove (14) to open the oil inlet (411), and is movable away from the second oil outlet (421) under the action of the spring (44) to close the oil inlet (411).
8. A connecting rod mechanism for cooling a piston of an automobile engine according to claim 7, wherein a side wall of the guide cylinder (42) is provided with an oil passage hole (422) penetrating in a radial direction, the oil passage hole (422) being for communicating the chamber with the oil chamber (413).
9. The connecting rod mechanism for cooling the piston of the automobile engine as claimed in claim 7, wherein the first oil outlet (412) is a stepped hole, the guide cylinder (42) comprises a first section, a second section and a third section which are connected in sequence, the outer periphery of the first section is clamped in the stepped hole, the second section is used for being tightly attached to the inner wall of the shell (41), and the third section and the inner wall of the shell (41) form the oil cavity (413).
10. The connecting rod mechanism for cooling the piston of the automobile engine as claimed in claim 7, wherein the oil inlet (411) is a stepped hole, and the plunger (43) can be clamped in a large hole of the stepped hole and close a small hole of the stepped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220115595.5U CN216951251U (en) | 2022-01-17 | 2022-01-17 | Connecting rod mechanism for cooling automobile engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220115595.5U CN216951251U (en) | 2022-01-17 | 2022-01-17 | Connecting rod mechanism for cooling automobile engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951251U true CN216951251U (en) | 2022-07-12 |
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ID=82316870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220115595.5U Active CN216951251U (en) | 2022-01-17 | 2022-01-17 | Connecting rod mechanism for cooling automobile engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951251U (en) |
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2022
- 2022-01-17 CN CN202220115595.5U patent/CN216951251U/en active Active
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