CN215333200U

CN215333200U - Fuel injector mounting assembly and engine

Info

Publication number: CN215333200U
Application number: CN202120290185.XU
Authority: CN
Inventors: 王兆日; 徐孝军
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-12-28
Anticipated expiration: 2031-01-30

Abstract

The utility model provides an engine fuel injector mounting assembly, comprising: the oil sprayer comprises a cylinder cover provided with a first mounting hole, a copper sleeve arranged in the first mounting hole, an oil sprayer partially sleeved in the copper sleeve, an O-shaped ring arranged between the copper sleeve and the inner wall of the first mounting hole to realize radial sealing between the copper sleeve and the cylinder cover, a connecting piece used for connecting the oil sprayer and the cylinder cover, and a mounting plate.

Description

Fuel injector mounting assembly and engine

Technical Field

The utility model relates to the technical field of engines, and particularly provides a fuel injector mounting assembly and an engine.

Background

In the prior art, a diesel engine with a four-valve double-overhead camshaft structure is adopted, and a cylinder cover is required to be provided with parts such as a cylinder cover hood, an inlet valve, an exhaust valve, a valve seat ring, a valve spring, a camshaft, an oil sprayer and the like, so that the structure is very compact. The fuel injector is generally arranged in the middle of each cylinder, the fuel injector is usually fixed in a pressing plate pressing mode, and the fuel injector is fixed on the cylinder cover through the pressing plate. Because spare part is more on the cylinder head, thereby can lead to the sprayer to be close with the cylinder head cover distance usually and lead to the not enough installation space of sprayer even to influence the installation of sprayer, simultaneously, the commonality of current sprayer clamp plate structure is also relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oil sprayer mounting assembly and an engine, which can improve the assembling space of an oil sprayer.

The utility model provides an engine fuel injector mounting assembly, characterized in that it comprises:

the cylinder cover is provided with a first mounting hole;

the copper sleeve is arranged inside the first mounting hole;

the fuel injector comprises a first main body part arranged outside the cylinder cover and a second main body part arranged inside the cylinder cover, and the second main body part is sleeved inside the copper sleeve;

the mounting plate comprises a second mounting hole and a third mounting hole which are positioned at two ends of the mounting plate and a first limiting part which is arranged between the second mounting hole and the third mounting hole, the first main body part is arranged in the first limiting part, and a central connecting line between the second mounting hole and the third mounting hole is not in the same plane with the central line of the first mounting hole;

the cylinder cover comprises a first mounting hole, a second mounting hole, a third mounting hole, a fourth mounting hole and a fifth mounting hole, wherein the first mounting hole is formed in the cylinder cover;

and the O-shaped ring is arranged between the copper sleeve and the inner wall of the first mounting hole so as to realize radial sealing between the copper sleeve and the cylinder cover.

Further, the first mounting hole comprises a large-head mounting hole and a small-head mounting hole which are coaxially arranged, the copper bush comprises a third main body portion and a fourth main body portion, the third main body portion is arranged in the large-head mounting hole in a sleeved mode, the fourth main body portion is arranged in the small-head mounting hole in a sleeved mode, and the fourth main body portion is in interference fit with the small-head mounting hole.

Further, the first connecting piece comprises a first bolt and a first nut, and the second connecting piece comprises a second bolt and a second nut.

Preferably, the center line of the first mounting hole, the center line of the fourth mounting hole and the center line of the fifth mounting hole are parallel to each other and are arranged obliquely to the surface of the cylinder head.

Preferably, the first limiting part is a rectangular clamping groove, and the diameter of the rectangular clamping groove is the same as the inner diameter of the copper sleeve.

Further, the fuel injector mounting assembly further comprises a cylinder head cover which is matched and connected with the cylinder head and arranged above the cylinder head, and the distance between the central line of the first mounting hole and the surface of the cylinder head cover is closer to the distance between the central lines of the second mounting hole and the third mounting hole and the surface of the cylinder head cover.

Preferably, the small end mounting hole penetrates through the cylinder cover, and the fourth main body part does not extend beyond the inner surface of the cylinder cover.

The O-shaped ring is arranged between the copper sleeve and the inner wall of the large-head mounting hole so as to realize radial sealing between the copper sleeve and the cylinder cover.

Further, the cylinder cover further comprises an accommodating cavity communicated with the first mounting hole and used for accommodating cooling liquid, and the third body part is placed inside the accommodating cavity.

Further, the utility model also provides an engine comprising a fuel injector mounting assembly for an engine as described above.

The fuel injector mounting assembly and the engine provided by the utility model can bring at least one of the following beneficial effects:

through designing an engine fuel injector installation component and engine in this scheme, effectively improve the assembly space of sprayer on the cylinder cap and improve the commonality of mounting panel, reduction in production cost.

Drawings

The utility model 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 utility model, 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.

Cylinder cap 10 is including arranging left surface (not mark) and the right flank surface (not mark) at cylinder cap both ends in, water outlet 19 has been seted up to the left surface, and the cooling water passes through inlet opening 38 enters spray tube 20 gets into through delivery port 2031 cylinder cap 10 flows out by water outlet 19 at last.

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 to 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 utility model, 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

1. A fuel injector mounting assembly, comprising:

the cylinder cover is provided with a first mounting hole;

the copper sleeve is arranged inside the first mounting hole;

2. The fuel injector mounting assembly of claim 1, characterized by:

the first mounting hole comprises a large-head mounting hole and a small-head mounting hole which are coaxially arranged, the copper bush is sleeved on a third main body part inside the large-head mounting hole and a fourth main body part inside the small-head mounting hole, and the fourth main body part is in interference fit with the small-head mounting hole.

3. The fuel injector mounting assembly of claim 1, characterized by:

the first connecting piece comprises a first bolt and a first nut, and the second connecting piece comprises a second bolt and a second nut.

4. The fuel injector mounting assembly of claim 1, characterized by:

the center line of the first mounting hole, the center line of the fourth mounting hole and the center line of the fifth mounting hole are parallel to each other and are obliquely arranged with the surface of the cylinder cover.

5. The fuel injector mounting assembly of claim 1, characterized by:

the first limiting part is a rectangular clamping groove, and the width of the rectangular clamping groove is the same as the inner diameter of the copper sleeve.

6. The fuel injector mounting assembly of claim 1, characterized by:

the fuel injector mounting assembly further comprises a cylinder head cover which is matched and connected with the cylinder head and arranged above the cylinder head, and the distance between the central line of the first mounting hole and the surface of the cylinder head cover is closer to the distance between the central lines of the second mounting hole and the third mounting hole and the surface of the cylinder head cover.

7. The fuel injector mounting assembly according to claim 2, characterized in that:

the small-end mounting hole penetrates through the cylinder cover, and the fourth main body part does not exceed the inner surface of the cylinder cover.

8. The fuel injector mounting assembly according to claim 2, characterized in that:

9. The fuel injector mounting assembly according to claim 2, characterized in that:

the cylinder cover further comprises an accommodating cavity communicated with the first mounting hole and used for accommodating cooling liquid, and the third body part is arranged inside the accommodating cavity.

10. An engine characterised by comprising a fuel injector mounting assembly according to any one of claims 1 to 9.