CN208057252U - Fuel injector and cylinder cover attaching structure - Google Patents

Fuel injector and cylinder cover attaching structure Download PDF

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Publication number
CN208057252U
CN208057252U CN201820452717.3U CN201820452717U CN208057252U CN 208057252 U CN208057252 U CN 208057252U CN 201820452717 U CN201820452717 U CN 201820452717U CN 208057252 U CN208057252 U CN 208057252U
Authority
CN
China
Prior art keywords
fuel injector
stepped hole
cylinder head
installation set
cover attaching
Prior art date
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.)
Expired - Fee Related
Application number
CN201820452717.3U
Other languages
Chinese (zh)
Inventor
陆浩
贺文东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Yuchai Machinery Co Ltd
Original Assignee
Guangxi Yuchai Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Yuchai Machinery Co Ltd filed Critical Guangxi Yuchai Machinery Co Ltd
Priority to CN201820452717.3U priority Critical patent/CN208057252U/en
Application granted granted Critical
Publication of CN208057252U publication Critical patent/CN208057252U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of fuel injectors and cylinder cover attaching structure, including cylinder head and fuel injector, the cylinder head is equipped with the mounting hole for extending from its top plate to bottom plate and being connected to cylinder head jacket, the mounting hole interpolation is equipped with the connection component for installing the fuel injector, the connection component includes installation set for accommodating the fuel injector and above the installation set and the fastener that compresses it, and gasket is equipped between the installation set and the fuel injector.The utility model is simple in structure, install compact, can effectively reduce the weight of cylinder head, improve the anufacturability of cylinder head.

Description

Fuel injector and cylinder cover attaching structure
Technical field
The utility model is related to fuel injector mounting technique fields, more specifically, it relates to a kind of fuel injector and cylinder head Connection structure.
Background technology
Fuel injector is the core component of engine fuel feed system, and effect is will be with the fuel timing of certain pressure It is quantitatively ejected into engine fuel chamber interior, make fuel oil quick break and is mixed and burned with fresh air.
Traditional fuel injector mounting structure design scheme is:The lug of mounting hole of oil sprayer is cast directly in cylinder head simultaneously Mounting hole of oil sprayer is processed, traditional scheme has the disadvantage that:(1) complicated, casting and difficulty of processing are big, and craftsmanship is poor; (2) traditional scheme directly casts out the lug of mounting hole of oil sprayer in cylinder head, needs to occupy larger space, is not suitable for compact Type arrangement requires;(3) traditional scheme directly casts out the lug of mounting hole of oil sprayer in cylinder head, due to lug wall thickness compared with Greatly, cause cylinder head weight also relatively large.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned deficiency for the prior art, provide it is a kind of it is simple in structure, Install compact and the fuel injector and cylinder cover attaching structure for reducing cylinder head weight.
The technical solution of the utility model is such:A kind of fuel injector and cylinder cover attaching structure, including cylinder head and Fuel injector, the cylinder head is equipped with the mounting hole for extending from its top plate to bottom plate and being connected to cylinder head jacket, described Mounting hole interpolation is equipped with the connection component for installing the fuel injector, and the connection component includes for accommodating the spray The installation set of oily device and above the installation set and the fastener that compresses it, the installation set and the fuel injector Between be equipped with gasket.
As a further improvement, the mounting hole is the stepped hole that diameter is sequentially reduced from top to bottom, including the first rank Terraced hole, the second stepped hole, third stepped hole, first stepped hole are located on the top plate, the third stepped hole On the bottom plate, second stepped hole sequentially passes through the top plate, cylinder head jacket, bottom plate.
Further, the installation set is the hierarchic structure that is sequentially reduced from top to bottom of diameter, including is located at described the Turnup structure in one stepped hole, the plug division being plugged in the third stepped hole and by the turnup structure and plug division The installation set ontology of connection.
Further, the gasket is located at the plug division and is formed by above shoulder with installation set ontology.
Further, first stepped hole and the second stepped hole are formed by between step and the turnup structure Equipped with the first sealing ring.
Further, it is interference fit between the plug division and the third stepped hole.
Further, the fastener is rotatably connected in first stepped hole.
Further, the second sealing ring is equipped between the fuel injector and the fastener.
Advantageous effect
The utility model compared with prior art, has the following advantages:
1, fuel injector is mounted on cylinder head instead of the casting lug of traditional scheme by the way that mounting hole and installation set is arranged On, simple in structure, install compact can effectively reduce the weight of cylinder head, reduce cylinder head casting and difficulty of processing, improve The anufacturability of cylinder head;
2, the setting gasket indoor high pressure gas that can effectively prevent burning is scurried out inside installation set;
3, turnup structure can play the assembly of installation set positioning action, and utilize turnup structure by the first sealing ring pressure Tightly, the cooling water inside cylinder head jacket can be effectively prevent to be leaked out from the first stepped hole;
4, for interference fit between plug division and third stepped hole, the cooling water that can be effectively prevent inside cylinder head jacket It is leaked out from third stepped hole, installation set is avoided to be shaken in mounting hole, improve the stability of fuel injector installation;
5, the second sealing ring of setting can effectively prevent rainwater, dust etc. to enter installation set internal contamination and corrosion fuel injector Body plays protective action to fuel injector.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model;
Fig. 2 is the structural schematic diagram of mounting hole in the utility model;
Fig. 3 is the structural schematic diagram of installation set in the utility model.
Wherein:1- cylinder head, 2- fuel injectors, 3- top plates, 4- cylinder head jackets, 5- bottom plates, 6- installation sets, 7- fasteners, 8- gaskets, the first stepped holes of 9-, the second stepped holes of 10-, 11- thirds stepped hole, the first sealing rings of 12-, the second sealing rings of 13-, 61- turnup structures, the plug divisions 62-, 63- installation set ontologies.
Specific implementation mode
Specific embodiment in below in conjunction with the accompanying drawings is described further the utility model.
Refering to fig. 1-3, a kind of fuel injector and cylinder cover attaching structure, including cylinder head 1 and fuel injector 2, cylinder head 1 is by pushing up Plate 3, bottom plate 5 and the cylinder head jacket 4 between top plate 3 and bottom plate 5 form, and fuel injector 2 passes through top from 1 outside of cylinder head To 1 inside of cylinder head, cylinder head 1 is equipped with extension and and cylinder from its top plate 3 to bottom plate 5 for plate 3, cylinder head jacket 4 and bottom plate 5 The mounting hole that lid water jacket 4 is connected to, mounting hole are the stepped hole that diameter is sequentially reduced from top to bottom, and stepped hole includes the first stepped hole 9, the second stepped hole 10, third stepped hole 11, the first stepped hole 9 are located on top plate 3, and third stepped hole 11 is located on bottom plate 5, the Two stepped holes 10 sequentially pass through top plate 3, cylinder head jacket 4, bottom plate 5, and mounting hole interpolation is equipped with for installing fuel injector 2 Connection component, connection component include installation set 6 for accommodating fuel injector 2 and above installation set 6 and compress it tight Firmware 7, installation set 6 are the hierarchic structure that diameter is sequentially reduced from top to bottom, and installation set 6 includes being located in the first stepped hole 9 Turnup structure 61, the plug division 62 being plugged in third stepped hole 11 and the installation for connecting turnup structure 61 and plug division 62 Ontology 63 is covered, gasket 8 is equipped between installation set 6 and fuel injector 2, gasket 8 is located at plug division 62 and is formed with installation set ontology 63 Shoulder above, shoulder also ensures the precision that fuel injector 2 is installed downwards, prevents fuel injector 2 to be mounted so as to too low, and gasket 8 is arranged The indoor high pressure gas that can effectively prevent burning is scurried out inside installation set 6, by be arranged mounting hole and installation set 6 instead of Fuel injector 2 is mounted in cylinder head 1 by the casting lug of traditional scheme, and simple in structure, install compact can effectively reduce cylinder The weight of lid 1 reduces the casting of cylinder head 1 and difficulty of processing, improves the anufacturability of cylinder head 1.
First stepped hole 9 and the second stepped hole 10, which are formed by between step and turnup structure 61, is equipped with the first sealing ring 12, first sealing ring 12 is compressed using turnup structure 61, cooling water inside cylinder head jacket 4 can be effectively prevent from first Stepped hole 9 leaks out, and turnup structure 61 can also play positioning action to the assembly of installation set 6, prevent installation set 6 to be mounted so as to too low, The sectional area of turnup structure 61 is larger, and when being pressed installation set 6, installation set 6 is more uniformly stressed, and the first stepped hole 9 is being pressed Also have the function of being oriented to when installation set 6.
It is interference fit between plug division 62 and third stepped hole 11, can effectively prevent cold inside cylinder head jacket 4 But water is leaked out from third stepped hole 11, and installation set 6 is avoided to be shaken in mounting hole, improves the stability that fuel injector 2 is installed, preferably , it is formed by between step and installation set 6 in the second stepped hole 10 and third stepped hole 11 and is equipped with third sealing ring, further Ground prevents the cooling water inside cylinder head jacket 4 from being leaked out from third stepped hole 11.
Fastener 7 is rotatably connected in the first stepped hole 9, and 7 periphery of fastener is equipped with external screw thread, is equipped in the first stepped hole 9 interior Fastener 7 is screwed down by screw thread, and fastener 7 can securely fix installation set 6, convenient for disassembly and assembly.
The second sealing ring 13 is equipped between fuel injector 2 and fastener 7, fuel injector 2, which is equipped with, installs second sealing ring 13 Groove, the inner wall abutting contact of the second sealing ring 13 and fastener 7, the second sealing ring 13 of setting can effectively prevent rainwater, Dust etc. enters 6 internal contamination of installation set and corrosion oil injector body, and protective action is played to fuel injector 2.
In the present embodiment, installation set 6 is thin wall copper sleeve, and thick thick casting hole is replaced using the copper sleeve of thin-walled, can be with The weight of cylinder head 1 is reduced, and copper sheathing good corrosion resistance, thermal conductivity are good, effectively fuel injector 2 can be given to cool down, adequately protect spray Oily device 2 extends the service life of fuel injector 2.
Above-described is only preferred embodiments of the present invention, it should be pointed out that those skilled in the art is come It says, under the premise of not departing from the utility model structure, several modifications and improvements can also be made, these all do not interfere with this reality With the effect and patent practicability of novel implementation.

Claims (8)

1. a kind of fuel injector and cylinder cover attaching structure, including cylinder head (1) and fuel injector (2), it is characterised in that:The gas Cylinder cap (1) is equipped with the mounting hole for extending from its top plate (3) to bottom plate (5) and being connected to cylinder head jacket (4), the installation Hole interpolation is equipped with the connection component for installing the fuel injector (2), and the connection component includes for accommodating the spray The installation set (6) of oily device (2) and the fastener (7) for being located at the installation set (6) top and compressing it, the installation set (6) gasket (8) is equipped between the fuel injector (2).
2. fuel injector according to claim 1 and cylinder cover attaching structure, it is characterised in that:The mounting hole be diameter from The stepped hole being sequentially reduced under above, including the first stepped hole (9), the second stepped hole (10), third stepped hole (11), it is described First stepped hole (9) is located on the top plate (3), and the third stepped hole (11) is located on the bottom plate (5), described The second stepped hole (10) top plate (3), cylinder head jacket (4), bottom plate (5) are sequentially passed through.
3. fuel injector according to claim 2 and cylinder cover attaching structure, it is characterised in that:The installation set (6) is The hierarchic structure that diameter is sequentially reduced from top to bottom, including be located in first stepped hole (9) turnup structure (61), grafting In in the third stepped hole (11) plug division (62) and the peace that connects the turnup structure (61) and plug division (62) Encapsulation ontology (63).
4. fuel injector according to claim 3 and cylinder cover attaching structure, it is characterised in that:The gasket (8) is located at The plug division (62) is formed by with installation set ontology (63) above shoulder.
5. fuel injector according to claim 3 and cylinder cover attaching structure, it is characterised in that:First stepped hole (9) it is formed by between step and the turnup structure (61) with the second stepped hole (10) and is equipped with the first sealing ring (12).
6. fuel injector according to claim 3 and cylinder cover attaching structure, it is characterised in that:The plug division (62) with It is interference fit between the third stepped hole (11).
7. fuel injector according to claim 2 and cylinder cover attaching structure, it is characterised in that:Fastener (7) rotation It is connected in first stepped hole (9).
8. fuel injector according to claim 1 and cylinder cover attaching structure, it is characterised in that:The fuel injector (2) with The second sealing ring (13) is equipped between the fastener (7).
CN201820452717.3U 2018-04-02 2018-04-02 Fuel injector and cylinder cover attaching structure Expired - Fee Related CN208057252U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820452717.3U CN208057252U (en) 2018-04-02 2018-04-02 Fuel injector and cylinder cover attaching structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820452717.3U CN208057252U (en) 2018-04-02 2018-04-02 Fuel injector and cylinder cover attaching structure

Publications (1)

Publication Number Publication Date
CN208057252U true CN208057252U (en) 2018-11-06

Family

ID=63986526

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820452717.3U Expired - Fee Related CN208057252U (en) 2018-04-02 2018-04-02 Fuel injector and cylinder cover attaching structure

Country Status (1)

Country Link
CN (1) CN208057252U (en)

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20181106

CF01 Termination of patent right due to non-payment of annual fee