CN114837767A - Lubricating mechanism for engine rocker arm and engine - Google Patents
Lubricating mechanism for engine rocker arm and engine Download PDFInfo
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- CN114837767A CN114837767A CN202110131413.3A CN202110131413A CN114837767A CN 114837767 A CN114837767 A CN 114837767A CN 202110131413 A CN202110131413 A CN 202110131413A CN 114837767 A CN114837767 A CN 114837767A
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- rocker arm
- oil
- engine
- oil outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention provides a lubricating mechanism for an engine rocker arm and an engine, comprising: the rocker arm comprises a rocker arm, a rocker arm shaft, a bushing and a rocker arm support used for fixing the rocker arm shaft. The rocker arm comprises a first surface, a second surface, a first section and a second section, wherein the first section and the second section are arranged between the first surface and the second surface, and the rocker arm comprises a rocker arm hole penetrating through the first surface and the second surface, a first oil channel arranged on the first section and a second oil channel arranged on the second section. The rocker arm is fixed on the rocker arm shaft through the rocker arm hole and can rotate relative to the rocker arm shaft. The bushing is arranged between the rocker arm and the rocker arm shaft and comprises a first oil outlet and a second oil outlet, the first oil outlet is connected with the first oil duct, and the second oil outlet is connected with the second oil duct.
Description
Technical Field
The invention relates to the technical field of engines, and particularly provides a lubricating mechanism for an engine rocker arm and an engine.
Background
In the prior art, rocker arms are important components of engine valve trains. The rocker arm is matched with a camshaft, a valve push rod, a rocker arm shaft and the like to open and close an intake valve and an exhaust valve of an engine cylinder, so that fresh charged air can enter the cylinder in time, and waste gas can be discharged out of the cylinder in time. In order to ensure the smooth operation of the rocker arm and avoid the influence of the abrasion on the working precision and reliability of the system, the lubrication of the valve rocker arm is particularly important. The lubricating structure of the prior rocker arm usually arranges a rocker arm lubricating oil channel in the same section, and the structure has the problems of poor lubricating effect of the rocker arm caused by insufficient oil pressure and complex oil channel structure, so that the rocker arm ball head and the rocker arm adjusting bolt ball head are seriously abraded or the manufacturing cost is high.
Disclosure of Invention
The invention aims to provide a lubricating mechanism for an engine rocker arm and an engine, wherein a rocker arm lubricating oil passage is arranged in different sections.
According to one aspect of the present invention, there is provided a lubricating mechanism for an engine rocker arm, characterized in that it comprises:
a rocker arm comprising a first surface, a second surface, and first and second cross-sections disposed between the first and second surfaces, the rocker arm comprising a rocker arm bore extending through the first and second surfaces and a first oil passage disposed on the first cross-section and a second oil passage disposed on the second cross-section, respectively;
the rocker arm is fixed on the rocker arm shaft through the rocker arm hole and can rotate relative to the rocker arm shaft;
the bushing is arranged between the rocker arm and the rocker arm shaft and comprises a first oil outlet and a second oil outlet, the first oil outlet is connected with the first oil duct, and the second oil outlet is connected with the second oil duct;
the rocker arm support is used for fixing the rocker arm shaft.
Preferably, the first cross section and the second cross section are parallel and are both arranged perpendicular to a center line of the rocker arm hole.
Furthermore, the rocker arm shaft comprises a rocker arm shaft inner hole, a first oil inlet and an oil storage tank, a first gap is formed between the rocker arm shaft and the bush, and engine oil enters the rocker arm shaft inner hole through the first oil inlet, enters the oil storage tank through the rocker arm shaft inner hole and enters the first gap through the oil storage tank.
Further, the rocker arm further comprises a rocker arm ball, a third surface intersecting the first surface and the second surface, an oil guide groove arranged in the third surface, and a third oil outlet arranged at one end of the oil guide groove, wherein the third oil outlet is connected with the first oil duct, engine oil in the first gap enters the first oil duct through the first oil outlet, enters the third oil outlet through the first oil duct, and then enters the oil guide groove through the third oil outlet, so that the rocker arm ball is lubricated finally.
Further, the rocker arm further comprises a mounting hole arranged at one end of the rocker arm, the lubricating mechanism further comprises an adjusting screw in matched connection with the mounting hole, the adjusting screw comprises a main body part and a ball head part, an extension line of a center line of the second oil duct is intersected with the ball head part, engine oil in the first gap enters the second oil duct through the second oil outlet, and then splashes out through the second oil duct to lubricate the ball head part.
Preferably, the first cross section passes through a center line of the third oil outlet, the rocker arm further comprises a mounting hole disposed at one end of the rocker arm, and the second cross section passes through a center line of the mounting hole.
Preferably, the first surface and the second surface are arranged in parallel, and the first surface and the second surface are arranged non-perpendicularly to the central line of the rocker arm hole.
Further, the bushing and the rocker arm hole are in interference fit to achieve synchronous movement of the bushing and the rocker arm.
Another technical solution to which the present invention is applied is a lubricating mechanism for an engine rocker arm, characterized by comprising:
a rocker arm comprising a first surface, a second surface, and first and second cross-sections disposed between the first and second surfaces, the rocker arm comprising a rocker arm bore extending through the first and second surfaces and a first oil passage disposed on the first cross-section and a second oil passage disposed on the second cross-section, respectively;
a rocker shaft to which the rocker arm is fixed through the rocker arm hole and which is rotatable relative to the rocker arm shaft;
the oil outlet structure comprises a bushing, wherein the bushing comprises an inner surface, an outer surface, a first oil outlet and a second oil outlet, the first oil outlet and the second oil outlet penetrate through the inner surface and the outer surface, and the inner surface and the outer surface are coaxially arranged and are both cylindrical surfaces.
The rocker arm support is used for fixing the rocker arm shaft.
The invention also provides an engine comprising the lubricating mechanism for the rocker arm of the engine.
The lubricating mechanism for the engine rocker arm and the engine, which are provided by the invention, have the advantages that the lubricating oil passages of the rocker arm are respectively arranged in different sections, and at least one of the following beneficial effects can be brought:
different cross-sections are arranged in through dividing rocking arm lubricating-oil duct in this scheme, have effectively simplified the oil duct structure, improve the oil pressure, promote the lubricated effect of rocking arm to reduce rocking arm bulb and rocking arm adjusting bolt bulb wearing and tearing, arrange rocking arm lubricating-oil duct branch in different cross-sections simultaneously and can be convenient for process, reduce manufacturing cost.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic structural view of a cylinder head mechanism assembly;
FIG. 2 is a schematic view of the nozzle assembly of the present invention;
FIG. 3 is a schematic diagram of the fuel injector assembly of the present invention;
FIG. 4 is a first perspective view of the cylinder head;
FIG. 5 is a second perspective view of the cylinder head;
FIG. 6 is a schematic structural view of the nozzle of the present invention;
FIG. 7 is a schematic view of the structure of the mounting plate of the present invention;
FIG. 8 is a schematic cross-sectional view of the copper bush assembly of the present invention;
FIG. 9 is a bottom view of the cylinder head;
FIG. 10 is a cross-sectional view of the cylinder head taken along line A-A of FIG. 9;
FIG. 11 is a schematic assembly view of the rocker arm;
FIG. 12 is a schematic structural view of a rocker arm;
FIG. 13 is a perspective view of the rocker arm mounting rocker shaft and bushing;
FIG. 14 is a perspective view of the bushing;
FIG. 15 is a first perspective view of the rocker shaft;
FIG. 16 is a second perspective view of the rocker shaft;
FIG. 17 is a schematic top view of the rocker arm;
FIG. 18 is a schematic bottom view of the rocker arm;
FIG. 19 is a schematic view of a first oil gallery arrangement;
fig. 20 is a schematic view of the second oil passage arrangement structure.
10-cylinder cover; 11-a first upper surface; 12-cylinder cover mounting holes; 13-a second upper surface; 14-a fourth mounting hole; 15-a first mounting hole; 16-a fifth mounting hole; 17-a rocker arm; 18-rocker arm support; 19-water outlet; 20-a spray pipe; 21-an air inlet channel; 22-an exhaust passage; 23-an oil storage tank; 24-a push rod mounting hole; 25-a sand discharge port; 26-component mounting holes; 27-cylinder cover oil hole; 28-a mounting plate; 29-a containment chamber; 30-a fuel injector; 31-O-ring; 33-a first connector; 34-a second connector; 35-a copper sleeve; 37-cylinder head cover; 38-water inlet hole; 344-adjusting bolt; 40-rocker shaft; 41-a bushing; 42-valve; 43-a push rod; 44-adjusting screws; 171-rocker arm hole; 172-rocker arm ball head; 13 a-first cross section; 14 a-a second cross section; 177-a third oil outlet; 176-oil guide grooves; 401-rocker shaft inner hole; 402-a first oil inlet; 403-oil storage tank; 411-a first oil outlet; 412-a second oil outlet; 414-an outer surface; 413-an inner surface; 441-a main body portion; 442-a ball head; 131-a first oil passage; 141-second oil duct
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 drawings without creative efforts.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings of the specification.
Referring to fig. 1 to 6 and 10, a cylinder head assembly 100 for an engine includes a cylinder head 10, a nozzle 20, and a fuel injector 30, the cylinder head 10 including an upper surface (not labeled) at an upper end and a lower surface (not labeled) at a lower end, the lower surface defining a water inlet hole 38, the cylinder head 10 further including a nose bridge region interposed between the upper and lower surfaces. The cylinder head 10 includes an intake passage 21, an exhaust passage 22 and a first mounting hole 15 for mounting the fuel injector 30, the intake passage 21 includes an intake port 211, the exhaust passage 22 includes an exhaust port 221, and the intake passage 21, the exhaust passage 22 and the first mounting hole 15 form the nose bridge region.
The spray tube 20 includes the section 201 of intaking, goes out water section 203 and arranges in intake section 201 and play water section 203 between the linkage segment 202, the section 201 of intaking and linkage segment 202 arrange the coplanar in, go out water section 203 with the section 201 of intaking and the linkage segment 202 place plane form certain angle, the section 201 of intaking includes first step section 2011, the section 201 of intaking includes water inlet 2012, water inlet 2012 installs through first step section 2011 in the inlet opening 38, it includes delivery port 2031 to go out water section 203, delivery port 2031 is just to the nose bridge district.
The water outlet section 203 and the connecting section 202 are both bending pipes, the first step section 2011 is a cylindrical section coaxially arranged with the water inlet section 201, and the outer diameter of the first step section 2011 is larger than the diameter of the water inlet section 201. The inlet opening 38 includes a second step 381 co-located with the first step 2011. The first step section 2011 includes a positioning score line 2013, and the positioning score line 2013 is aligned in parallel with the long side of the cylinder head 10 to position the installation position of the nozzle 20.
Referring to fig. 1, 3 and 4, the upper surface includes a first upper surface 11 and a second upper surface 13 recessed downward from the first upper surface 11, the cylinder head 10 further includes a cylinder head mounting hole 12 protruding along the second upper surface 13 for fixing the cylinder head 10 on the engine block, and the cylinder head mounting hole 12 penetrates through the upper surface and the lower surface. The cylinder head mounting hole 12 includes a first surface 121 located at the top of the cylinder head mounting hole 12, and the first surface 121 and the first upper surface 11 are located on the same plane. The cylinder head 10 also includes assembly mounting holes 26 for mounting other cylinder head assemblies.
Referring to fig. 3, 4, 7 and 8, the cylinder head 10 further includes a copper bush 35 disposed inside the first mounting hole 15, a mounting plate 28 for fixing the fuel injector 30, a connecting member, and an O-ring 31. The fuel injector 30 comprises a first main body part (not marked) arranged outside the cylinder cover 10 and a second main body part (not marked) arranged inside the cylinder cover 10, wherein the second main body part is sleeved inside the copper sleeve 35. The mounting plate 28 includes a second mounting hole 281 and a third mounting hole 282 at both ends thereof, and a first stopper portion 283 interposed between the second mounting hole 281 and the third mounting hole 282, the first body portion is disposed in the first stopper portion 283, and a center line between the second mounting hole 281 and the third mounting hole 282 is not in the same plane as a center line of the first mounting hole 15. The connecting pieces comprise a first connecting piece 33 and a second connecting piece 34, the cylinder head 10 further comprises a fourth mounting hole 14 and a fifth mounting hole 16 which are positioned at two ends of the first mounting hole 15, the first connecting piece 33 passes through the second mounting hole 281 and the fourth mounting hole 14, and the second connecting piece 34 passes through the third mounting hole 282 and the fifth mounting hole 16. The O-ring 31 is disposed between the copper bush 35 and the inner wall of the first mounting hole 15 to achieve radial sealing between the copper bush 35 and the cylinder head 10.
The first mounting hole 15 includes a large-end mounting hole 151 and a small-end mounting hole 152 that are coaxially disposed, the copper bush 35 includes a third main body portion 351 that is sleeved inside the large-end mounting hole 151 and a fourth main body portion 352 that is sleeved inside the small-end mounting hole 152, and the fourth main body portion 352 and the small-end mounting hole 152 are in interference fit.
The first connector 33 includes a first bolt 332 and a first nut 331, and the second connector 34 includes a second bolt 342 and a second nut 341. In this embodiment, the connecting member is a bolt and a nut, and in other embodiments, it may be another type of connecting member such as a pin or a screw.
The center line of the first mounting hole 15, the center line of the fourth mounting hole 14 and the center line of the fifth mounting hole 16 are parallel to each other and are arranged obliquely with the surface of the cylinder head 10. In other embodiments, the center line of the first mounting hole 15, the center line of the fourth mounting hole 14, and the center line of the fifth mounting hole 16 may be perpendicular to the surface of the cylinder head 10.
The first limiting portion 283 is a rectangular clamping groove, and the width of the rectangular clamping groove is the same as the inner diameter of the copper sleeve 35. In this embodiment, the first stopper 283 is a rectangular notch, but in other embodiments, the first stopper 283 may have other shapes such as an arc notch.
The cylinder head 10 further includes a cylinder head cover 37 coupled to the cylinder head 10 and disposed above the cylinder head, and the center line of the first mounting hole 15 is closer to the surface of the cylinder head cover 37 than the center lines of the second and third mounting holes 281 and 282.
The small end mounting hole 152 is disposed through the cylinder head 10, and the fourth main body portion 352 is not disposed beyond the inner surface of the cylinder head 10. In other embodiments, the small end mounting hole 152 may not be disposed through the cylinder head 10.
The cylinder head 10 further includes a receiving chamber 29 communicating with the first mounting hole 15 for receiving a cooling fluid, and the third body portion 351 is partially disposed inside the receiving chamber 29. Each surface of the cylinder cover 10 also comprises a sand discharge port 25 required by the casting process.
The cylinder head assembly 100 in the present embodiment is a part of an engine. Engines typically include, in addition to the head assembly 100, an oil pan, a cylinder block, a turbocharger, a lubrication system, and a cooling system, among other things.
Referring to fig. 1 and 11 to 20, the cylinder head assembly 100 further includes a rocker arm lubricating mechanism including a rocker arm 17, a rocker arm shaft 40 for fixing the rocker arm 17, a bushing 41 interposed between the rocker arm 17 and the rocker arm shaft 40, and a rocker arm support 18 for fixing the rocker arm shaft 40. The rocker arm 17 includes a first surface 13A, a second surface 14A, and a first section 13A and a second section 14A disposed between the first surface 13A and the second surface 14A, the rocker arm 17 includes a rocker arm hole 171 penetrating the first surface 13A and the second surface 14A, and a first oil passage 131 disposed on the first section 13A and a second oil passage 141 disposed on the second section 14A, respectively, and the first section 13A and the second section 14A are parallel and are both disposed perpendicular to a center line of the rocker arm hole 171. The rocker arm 17 is fixed to the rocker shaft 40 through the rocker arm hole 171 and is rotatable with respect to the rocker shaft 40. The bushing 41 is disposed between the rocker arm 17 and the rocker arm shaft 40, the bushing 41 includes a first oil outlet 411 and a second oil outlet 412, the first oil outlet 411 is connected to the first oil passage 131, and the second oil outlet 412 is connected to the second oil passage 141. In the present embodiment, the first cross-section 13a and the second cross-section 14a are disposed separately and are provided perpendicular to the center line of the rocker arm hole 171, but in other embodiments, the first cross-section 13a and the second cross-section 14a may be the same cross-section and not provided perpendicular to the center line of the rocker arm hole 171, or the first cross-section 13a and the second cross-section 14a may be the same cross-section and provided perpendicular to the center line of the rocker arm hole 171.
The cylinder cover assembly 100 comprises a cylinder cover oil hole 27, the rocker shaft 40 comprises a rocker shaft inner hole 401, a first oil inlet 402, a locking screw hole 404 and an oil storage groove 403, the rocker shaft 40 is fixed on the rocker support 18 through the locking screw hole 404, and a first gap is formed between the rocker shaft 40 and the bush 41. The engine oil enters the rocker arm support 18 through the cylinder cover oil hole 27, enters the rocker arm shaft inner hole 21 through the first oil inlet 402, enters the oil storage tank 23 through the rocker arm shaft inner hole 21, and enters the first clearance through the oil storage tank 23.
The bushing 41 includes an inner surface 413, an outer surface 414, and a first oil outlet 411 and a second oil outlet 412 penetrating through the inner surface 413 and the outer surface 414, where the inner surface 413 and the outer surface 414 are coaxially arranged and are both cylindrical surfaces. The bushing 41 is in interference fit with the rocker arm hole 171 to achieve synchronous movement of the bushing 41 and the rocker arm 17.
The rocker arm 17 further comprises a rocker arm ball 172, a third surface 17A intersecting the first surface 13A and the second surface 14A, an oil guide groove 176 disposed on the third surface 17A, and a third oil outlet 177 disposed at one end of the oil guide groove 176, wherein the third oil outlet 177 is connected to the first oil passage 131. When the rocker arm 17 and the bushing 41 rotate at a high speed, the engine oil in the first gap enters the first gap through the first oil outlet 411, enters the third oil outlet 177 from the first gap through the first oil passage 131, enters the oil guide groove 176 through the third oil outlet 177, and finally lubricates the rocker arm ball 172.
The rocker arm 17 further comprises a mounting hole 175 disposed at one end of the rocker arm 17, the rocker arm 17 further comprises an adjusting screw 44 cooperatively connected with the mounting hole 175, the adjusting screw 44 comprises a main body portion 441 and a ball head portion 442, and an extension line of a center line of the second oil passage 141 intersects with the ball head portion 442. When the rocker arm 17 and the bushing 41 rotate at a high speed, the engine oil in the first gap enters the second oil passage 141 through the second oil outlet 412, and splashes out through the second oil passage 141 to lubricate the ball head 442.
Referring to fig. 17 and 18, the first section 13a passes through a center line of the third outlet port 177, the rocker arm 17 further includes a mounting hole 175 disposed at one end of the rocker arm 17, and the second section 14a passes through a center line of the mounting hole 175. In other embodiments, the first section 13A and the second section 14A may be disposed at any position between the first surface 13A and the second surface 14A.
The first surface 13A and the second surface 14A are disposed in parallel, and the first surface 13A and the second surface 14A are disposed non-perpendicularly to the center line of the rocker arm hole 171. In other embodiments, the first surface 13A and the second surface 14A may also form an angle, and the first surface 13A and the second surface 14A may be perpendicular to the center line of the rocker arm hole 171.
Referring to fig. 5, 9 and 11, the cylinder head assembly includes a valve 42 disposed below the rocker ball head 172 and contacting the rocker ball head 172, and a pushrod 43 disposed below the ball head 442 and contacting the ball head 442, and the cylinder head 10 further includes a pushrod mounting hole 24 for mounting the pushrod 43. When the engine rotates at a high speed, the push rod 43 drives the rocker arm 17 to rotate, the lubricating mechanism of the rocker arm 17 starts to work, and the rocker arm 17 drives the valve 42 to open and close, so that the air intake and exhaust processes of the engine are completed.
It should be noted that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention, as will be apparent to those skilled in the art. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. A lubrication mechanism for an engine rocker arm, comprising:
a rocker arm comprising a first surface, a second surface, and first and second cross-sections disposed between the first and second surfaces, the rocker arm comprising a rocker arm bore extending through the first and second surfaces and a first oil passage disposed on the first cross-section and a second oil passage disposed on the second cross-section, respectively;
the rocker arm is fixed on the rocker arm shaft through the rocker arm hole and can rotate relative to the rocker arm shaft;
the bushing is arranged between the rocker arm and the rocker arm shaft and comprises a first oil outlet and a second oil outlet, the first oil outlet is communicated with the first oil duct, and the second oil outlet is communicated with the second oil duct;
the rocker arm support is used for fixing the rocker arm shaft.
2. The lubrication mechanism for an engine rocker arm of claim 1, wherein:
the first cross section and the second cross section are parallel and are perpendicular to the center line of the rocker arm hole.
3. The lubrication mechanism for an engine rocker arm of claim 1, wherein:
the rocker shaft comprises a rocker shaft inner hole, a first oil inlet and an oil storage groove, a first gap is formed between the rocker shaft and the bushing, and engine oil enters the rocker shaft inner hole through the first oil inlet, enters the oil storage groove through the rocker shaft inner hole and enters the first gap through the oil storage groove.
4. The lubrication mechanism for an engine rocker arm of claim 1, wherein:
the rocker arm further comprises a rocker arm ball head, a third surface intersected with the first surface and the second surface, an oil guide groove arranged on the third surface, and a third oil outlet arranged at one end of the oil guide groove, wherein the third oil outlet is connected with the first oil duct, engine oil in the first gap enters the first oil duct through the first oil outlet, enters the third oil outlet through the first oil duct, enters the oil guide groove through the third oil outlet, and finally lubricates the rocker arm ball head.
5. The lubrication mechanism for an engine rocker arm of claim 1, wherein:
the rocker arm further comprises a mounting hole arranged at one end of the rocker arm, the lubricating mechanism further comprises an adjusting screw in matched connection with the mounting hole, the adjusting screw comprises a main body part and a ball head part, the extension line of the center line of the second oil duct is intersected with the ball head part, engine oil in a first gap enters the second oil duct through the second oil outlet, and then the second oil duct is splashed out to lubricate the ball head part.
6. The lubrication mechanism for an engine rocker arm of claim 2, wherein:
the first section passes through the central line of the third oil outlet, the rocker arm further comprises a mounting hole arranged at one end of the rocker arm, and the second section passes through the central line of the mounting hole.
7. The lubrication mechanism for an engine rocker arm of claim 1, wherein:
the first surface and the second surface are arranged in parallel, and the first surface and the second surface are arranged in a non-perpendicular mode with respect to the center line of the rocker arm hole.
8. The lubrication mechanism for an engine rocker arm of claim 1, wherein:
the bushing and the rocker arm hole are in interference fit to realize synchronous movement of the bushing and the rocker arm.
9. A lubrication mechanism for an engine rocker arm, comprising:
a rocker arm comprising a first surface, a second surface, and first and second cross-sections disposed between the first and second surfaces, the rocker arm comprising a rocker arm bore extending through the first and second surfaces and a first oil passage disposed on the first cross-section and a second oil passage disposed on the second cross-section, respectively;
the rocker arm is fixed on the rocker arm shaft through the rocker arm hole and can rotate relative to the rocker arm shaft;
the oil outlet structure comprises a bushing, wherein the bushing comprises an inner surface, an outer surface, a first oil outlet and a second oil outlet, the first oil outlet and the second oil outlet penetrate through the inner surface and the outer surface, and the inner surface and the outer surface are coaxially arranged and are both cylindrical surfaces.
The rocker arm support is used for fixing the rocker arm shaft.
10. An engine characterized by comprising the lubricating mechanism for an engine rocker arm according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110131413.3A CN114837767B (en) | 2021-01-30 | 2021-01-30 | Lubricating mechanism for engine rocker arm and engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110131413.3A CN114837767B (en) | 2021-01-30 | 2021-01-30 | Lubricating mechanism for engine rocker arm and engine |
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| CN114837767A true CN114837767A (en) | 2022-08-02 |
| CN114837767B CN114837767B (en) | 2023-06-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931717A (en) * | 2020-07-14 | 2022-01-14 | 发动机引擎解决方案知识产权股份有限公司 | System and method for an engine |
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| CN114837767B (en) | 2023-06-27 |
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