CN205532972U - Mounting structure of diesel engine cylinder lid sprayer - Google Patents
Mounting structure of diesel engine cylinder lid sprayer Download PDFInfo
- Publication number
- CN205532972U CN205532972U CN201620120109.3U CN201620120109U CN205532972U CN 205532972 U CN205532972 U CN 205532972U CN 201620120109 U CN201620120109 U CN 201620120109U CN 205532972 U CN205532972 U CN 205532972U
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- China
- Prior art keywords
- sleeve
- sprayer
- fuel injector
- seal groove
- cylinder cap
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a mounting structure of diesel engine cylinder lid sprayer, its structure is equipped with the sleeve in the outside of sprayer lower part, and in cylinder cap and corresponding sleeve were packed into to the sprayer, cooling jacket's bottom was equipped with the telescopic internal thread hole of installation, is equipped with the seal groove at cooling jacket's middle -end position, sets up O shape sealing washer in the seal groove. Engine cylinder covers the cooling water course that is equipped with and forms the water jacket. The bottom of installing the sprayer position at the cylinder cap processes out a screw hole, and this hole is connected formation seal structure with the telescopic screw thread of sprayer. Process out the seal groove through perhaps saying at the cylinder cap in cylinder cap cooling jacket, seal groove and sealing washer are used for sealing up the sprayer sleeve of radial orientation, and the sealed clitellum of compriseing seal groove and sealing washer reaches the requirement to the cooling jacket cooling water is sealed. The sealed problem of sprayer water jacket of can effectual solution though the structure is simple directly spouting the cylinder cap.
Description
Technical field
This utility model belongs to engine structure, is specifically related to a kind of mounting structure for diesel engine with direct injection cylinder head fuel injector.
Background technology
At present, along with stepping up of discharging standards, the cylinder head as engine core parts is extremely closed for efficiency of combustion
Important, especially four-valve diesel engine cylinder cap must meet Abgasgesetz by optimizing design.Four-valve cylinder head requires oil spout
Device is arranged in the centre of four valves, the namely cylinder axis of electromotor.This design will pass when installing fuel injector
The water jacket of cylinder head, then fuel injector has just become very important key problem in technology at the sealing problem of cylinder cap.Mounting means is at present
Use interference fit to be fixed on cylinder cap in the installation sleeve of fuel injector, install in then fuel injector is inserted into sleeve.
The technological deficiency of this structure is, makes fuel injector poorly sealed, it is possible to coolant can be made to be flowed into combustor in structure design
In and in rocker arm bonnet, this just directly influences the properly functioning of electromotor.
Proposition of the present utility model can be fully solved the sealing problem of fuel injector, and this structure has simply, reliability high and
The feature such as easy to maintenance.
Summary of the invention
The purpose of this utility model is to provide the mounting structure of a kind of diesel engine with direct injection cylinder head fuel injector, to solve Four valve cylinder
The mounting hole of oil sprayer seepy question of lid.
In order to realize this purpose technical solution adopted in the utility model it is: the mounting structure of diesel engine cylinder cover fuel injector, including
Fuel injector, cylinder cap, sleeve and O-ring seals, be provided with cooling water jacket structure in cylinder cap.Fuel injector bottom outside equipped with
Sleeve, fuel injector loads in cylinder cap and corresponding sleeve, and the bottom of cylinder cover water jacket is provided with the internal thread hole installing sleeve, at cylinder
The middle-end position of lid water jacket is provided with seal groove, arranges O-ring seals in seal groove.
As all of electromotor, it is provided with cooling water circulation path in cylinder cap, in cylinder cap body, is i.e. cast with Cooling Water stream
Logical water channel thus form the structure of cooling jacket.This utility model (installs oil injector hole by the bottom at Cooling of Cylinder Head water jacket
Position) process a screwed hole, this screwed hole be connected with the screw thread designed by the sleeve of fuel injector formation seal structure.
Top half at cooling jacket processes installing hole by the physical dimension of sleeve.By at cylinder cap (in other words at the water jacket of cylinder cap
On) process seal groove, seal groove and sealing ring be used for seal the sleeve of radial direction and the connection of cylinder cap body, by sealing
The seal band of groove and sealing ring composition reaches the seal request of recirculated cooling water in cooling jacket.
Feature of the present utility model and providing the benefit that, improves, at engine cylinder cover, leaking of can solving that fuel injector installs slightly and asks
But topic, although structure is simple can effectively solve the oil atomizer water jacket sealing problem of direct-injection cylinder cap.
Accompanying drawing explanation
Fig. 1 is principle of the present utility model and structural representation.
Fig. 2 is the enlarged diagram of sleeve bottom surface and Cooling of Cylinder Head water jacket face structure.
Fig. 3 is cooling jacket seal groove portion structure enlarged diagram.
Detailed description of the invention
. referring to the drawings and combine and by embodiment, structure of the present utility model is further described.Diesel engine cylinder cover oil spout
The mounting structure of device, its structure is: load cylinder cap 3 equipped with sleeve 2, fuel injector together with sleeve in the outside of fuel injector 1 bottom
In.The bottom of cooling jacket 4 is provided with the internal thread hole 5 installing sleeve, is provided with seal groove 6 at the middle-end position of cooling jacket, seals
O-ring seals 7 is set in groove.
Sleeve is installed bottom surface 2-1 and cooling jacket installed surface 4-1 and is in sealing contact (as shown in Figure 2).The sleeve external screw thread of fuel injector with
After the internal thread hole of cooling jacket smears fluid sealant, fastening is installed.
As embodiment, the internal thread hole aperture set by cooling jacket is M12mm；And the degree of depth of this internal thread hole is more than sleeve
Externally threaded height, so can ensure that in the processing plane that the sleeve of fuel injector is completely installed on cylinder cap.The diameter of seal groove
It is 25.4mm；Height is 3.5mm.
First (installation) cooling jacket hole machined of cylinder cap inner cooling water set bottom is gone out the screwed hole of M12.Then at cooling jacket
Middle-end position processing sleeve seal circle seal groove, according to the size of sleeve seal circle, (specification is Ф 25.4 to the size of this seal groove
× 3.5) (as shown in Figure 3) it is processed.
Sleeve seal circle is installed in the seal groove that cylinder cap processes, then at the sealing screw thread of sleeve on smear fluid sealant,
So can preferably play the effect of close seal cooling water.And sleeve is installed bottom surface and is carried out gluing, sealing with cooling jacket installed surface
(as shown in a-quadrant in Fig. 2), so can be with the cooling water in sealed water jacket.Finally assembled with the specific purpose tool installing sleeve
On cylinder cap.
Claims (5)
1. the mounting structure of diesel engine cylinder cover fuel injector, including fuel injector, cylinder cap, sleeve and O-ring seals, is provided with in cylinder cap
Cooling water jacket structure, is characterized in that: being provided with sleeve (2) in the outside of fuel injector (1) bottom, fuel injector fills together with sleeve
Enter in cylinder cap (3), be provided with the internal thread hole (5) installing sleeve in the bottom at cooling jacket (4) position, at cooling jacket
Middle-end position be provided with seal groove (6), O-ring seals (7) is set in seal groove.
2. according to the mounting structure of the diesel engine cylinder cover fuel injector described in claim 1, it is characterized in that: bottom surface installed by described sleeve
(2-1) it is in sealing contact with cooling jacket installed surface (4-1).
3. according to the mounting structure of the diesel engine cylinder cover fuel injector described in claim 1, it is characterized in that: the interior spiral shell of described cooling jacket
Pit aperture is M12mm；And the degree of depth of internal thread hole is more than the externally threaded height of described sleeve.
4. according to the mounting structure of the diesel engine cylinder cover fuel injector described in claim 1, it is characterized in that: the diameter of described seal groove is
25.4mm；Height is 3.5mm.
5., according to claim 1 or the mounting structure of described diesel engine cylinder cover fuel injector, it is characterized in that: described sleeve external screw thread with
After the internal thread hole of cooling jacket smears fluid sealant, fastening is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620120109.3U CN205532972U (en) | 2016-02-15 | 2016-02-15 | Mounting structure of diesel engine cylinder lid sprayer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620120109.3U CN205532972U (en) | 2016-02-15 | 2016-02-15 | Mounting structure of diesel engine cylinder lid sprayer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205532972U true CN205532972U (en) | 2016-08-31 |
Family
ID=56777443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620120109.3U Active CN205532972U (en) | 2016-02-15 | 2016-02-15 | Mounting structure of diesel engine cylinder lid sprayer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205532972U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907268A (en) * | 2017-12-28 | 2018-04-13 | 东风商用车有限公司 | A kind of sensor fixing structure |
| CN114135415A (en) * | 2021-11-30 | 2022-03-04 | 中车大连机车车辆有限公司 | Method and structure for monitoring water leakage and air leakage inside cylinder cover in real time during operation |
-
2016
- 2016-02-15 CN CN201620120109.3U patent/CN205532972U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907268A (en) * | 2017-12-28 | 2018-04-13 | 东风商用车有限公司 | A kind of sensor fixing structure |
| CN107907268B (en) * | 2017-12-28 | 2024-04-02 | 东风商用车有限公司 | Sensor mounting structure |
| CN114135415A (en) * | 2021-11-30 | 2022-03-04 | 中车大连机车车辆有限公司 | Method and structure for monitoring water leakage and air leakage inside cylinder cover in real time during operation |
| CN114135415B (en) * | 2021-11-30 | 2023-05-09 | 中车大连机车车辆有限公司 | Method and structure for monitoring water leakage and air leakage in cylinder cover in real time during operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |