CN218882407U - Engine fuel injector pressing device - Google Patents
Engine fuel injector pressing device Download PDFInfo
- Publication number
- CN218882407U CN218882407U CN202223247549.XU CN202223247549U CN218882407U CN 218882407 U CN218882407 U CN 218882407U CN 202223247549 U CN202223247549 U CN 202223247549U CN 218882407 U CN218882407 U CN 218882407U
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- Prior art keywords
- pressure
- fuel injector
- engine
- oil sprayer
- bolt
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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
The utility model discloses an engine injector closing device, concrete structure is: the oil sprayer pressure plate is designed into an H shape to form two pairs of symmetrical pressure claws, the pressing surface of each pressure claw is an arc-shaped surface, and a semicircular open slot is formed between each pair of pressure claws. And a bolt hole is formed in the middle of the pressing plate, the flange surface of the bolt acts on the pressing plate through a special-shaped gasket, and the bolt penetrates through the oil sprayer pressing plate to screw and fix the oil sprayer 4 and an engine cylinder cover. The fuel injector is fixed by the depth of screwing the thread section into the cylinder cover and the screwing torque. The utility model discloses the structure is very compact, and easily processing when effectively solving the sprayer installation, long-time vibration also can not become flexible. The method is more convenient when the fuel injector is maintained or disassembled and installed. The utility model discloses can fix two sprayer simultaneously, reduce the manufacturing cost of engine parts.
Description
Technical Field
The utility model belongs to the technical field of the engine assembly structure, concretely relates to device that compresses tightly to sprayer.
Background
A fuel injector is a key component of a diesel engine and functions to inject high-pressure fuel into a combustion chamber of the diesel engine. The combustion principle of the diesel engine is that after air is compressed to a certain pressure, diesel oil is subjected to pressure increase and atomization through a high-pressure oil pump, and then is sprayed into a specific position of an air cylinder at a certain pressure, spray fineness and spray cone angle to be mixed with the air for combustion. In the installation of components of an engine, the installation and fixation of an oil injector are very important because the diesel engine vibrates greatly in operation, and long-term vibration can cause the fixing device of the oil injector to be loosened or dislocated, so that faults such as incomplete spray combustion, obvious reduction of engine performance and the like can be caused. At present, the conventional method for compressing the engine fuel injector is that a compressing device fixes the fuel injector, and the compressing mode relates to more part types, complex assembly, larger occupied space and incompact integral arrangement. And the fuel injector is connected with the cylinder cover, a spherical gasket is tightly pressed by a pressure plate, and then the spherical gasket is screwed by a fuel injector bolt. A disadvantage of these fastening means is that the holding-down device can be loosened a little bit, which is not easily detectable, as a result of vibrations caused by the long-term operation of the engine. But such looseness is difficult to detect when checking factors affecting engine performance, unless it is a highly experienced maintenance person. The utility model discloses according to the concrete structure of engine, adopt two sprayer of a sprayer closing device fixed, make the closing device quantity of sprayer halve, when eliminating above-mentioned hidden danger, the assembly is simple, has also effectively reduced the cost of engine.
Disclosure of Invention
The utility model aims at providing a compact structure, simple, the high sprayer closing device of security of assembly.
The principle structure of the present invention will be described below with reference to the accompanying drawings. The utility model discloses a following technical scheme, engine fuel injector closing device includes: the fuel injector comprises a fuel injector pressure plate, a bolt, a special-shaped gasket and the like. The structure is as follows: the oil sprayer pressure plate is designed into an H shape to form two pairs of symmetrical pressure claws, the pressing surface of each pressure claw is an arc-shaped surface, and a semicircular open slot is arranged between each pair of pressure claws. And a bolt hole is formed in the middle of the pressing plate, the flange surface of the bolt acts on the pressing plate through a special-shaped gasket, and the bolt penetrates through the oil sprayer pressing plate to screw and fix the oil sprayer and an engine cylinder cover.
A total of four pressing claws are arranged on two symmetrical open grooves of the oil sprayer pressing plate and are used as mounting surfaces for pressing the oil sprayer. The bolt in the middle of the pressure plate is screwed into a cylinder cover of the engine, and the effect of fixing the fuel injector is achieved through the screwing depth of the thread section and the screwing torque.
The utility model discloses a characteristics and beneficial effect are: the structure is very compact, and easy processing when effectively solving the sprayer installation, long-time vibration also can not become flexible. The method is more convenient when the fuel injector is maintained or disassembled and installed. The utility model discloses can fix two sprayer simultaneously, reduce the manufacturing cost of engine spare part.
Drawings
Fig. 1 is a perspective view of the principle and structure of the present invention.
Fig. 2 is a front view of the fuel injector pressure plate of the present invention.
Fig. 3 is an installation diagram of the embodiment of the present invention.
Detailed Description
The following provides a further description of the structural principles of the present invention by way of embodiments with reference to the accompanying drawings.
The engine fuel injector pressing device has the specific structure that: the oil sprayer pressure plate 1 is designed into an H shape to form two symmetrical pairs of pressure claws 1-1, the pressing surface of each pressure claw is an arc-shaped surface, and a semicircular open slot 1-2 is arranged between each pair of pressure claws; the middle of the pressure plate is provided with bolt holes 1-3. The flange face of the bolt 2 acts on the pressure plate through the special-shaped gasket 3, and the bolt penetrates through the oil sprayer pressure plate to screw and fix the oil sprayer 4 and the engine cylinder cover 5. The special-shaped washer is a washer with a spherical structure, and compared with the common washer, the special-shaped washer has the advantages that the friction force between threads is increased, and the fastened object is not easy to loosen.
As an embodiment, the width L1 of two semicircular open grooves of a pressure plate of an oil sprayer is 32mm, and the length L2 of the central moment of the open grooves is 85mm; the width L4 between each pair of pressing claws is 7-8mm, the total length L3 of the oil sprayer pressing plate is 130mm, and the diameter D of a central bolt hole of the oil sprayer pressing plate is 11mm.
The pressure plate in the fuel injector pressing device is a key part of the device (as shown in figure 2), and in the implementation installation, two pressing claws at one end of the fuel injector pressure plate are pressed on a mounting surface of a fuel injector; and two pressing claws at the other end are pressed on the other oil injector mounting surface, and four oil injectors are pressed through two oil injector pressing devices (as shown in figure 3). The semicircular open slot of the oil sprayer pressure plate is used for avoiding structural characteristics on the oil sprayer body, the width of the pressure claw is 8mm, and the semicircular open slot can play a guiding role. In order to increase the pressure area, the pressure surface of the pressure bolt is a relatively large flange surface and acts on the pressure plate through a special-shaped gasket. The compression bolt is screwed into a cylinder cover of the engine, and the effect of fixing the fuel injector is achieved through the screwing depth of the thread section and the screwing torque.
The embodiment is a four-cylinder diesel engine, the engine has four oil injectors, and the prior art needs four sets of pressing devices, so that the installation space is very narrow. Adopt utility model back, sprayer closing device reduces to two sets by four sets, when the easy to assemble operation, has also reduced the manufacturing cost of engine parts.
Claims (2)
1. Engine injector closing device, including clamp plate, bolt and heterotypic packing ring, characterized by: the oil sprayer pressure plate (1) is designed into an H shape to form two symmetrical pairs of pressure claws (1-1), the pressing surface of each pressure claw is an arc-shaped surface, and a semicircular open slot (1-2) is arranged between each pair of pressure claws; a bolt hole (1-3) is formed in the middle of the pressure plate, the flange face of the bolt (2) acts on the pressure plate through a special-shaped gasket (3), and the bolt penetrates through the fuel injector pressure plate to screw and fix the fuel injector (4) and an engine cylinder cover (5).
2. The engine fuel injector hold down of claim 1, wherein: the width of two semicircular opening grooves of the oil sprayer pressing plate is 32mm, and the length of the central moment of the opening grooves is 85mm; the width between each pair of pressing claws is 7-8mm, the total length of the oil sprayer pressing plate is 130mm, and the diameter of a central bolt hole of the oil sprayer pressing plate is 11mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247549.XU CN218882407U (en) | 2022-12-05 | 2022-12-05 | Engine fuel injector pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223247549.XU CN218882407U (en) | 2022-12-05 | 2022-12-05 | Engine fuel injector pressing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218882407U true CN218882407U (en) | 2023-04-18 |
Family
ID=85938852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223247549.XU Active CN218882407U (en) | 2022-12-05 | 2022-12-05 | Engine fuel injector pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218882407U (en) |
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2022
- 2022-12-05 CN CN202223247549.XU patent/CN218882407U/en active Active
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