CN110360042B - Wiring structure of electric control fuel injector - Google Patents
Wiring structure of electric control fuel injector Download PDFInfo
- Publication number
- CN110360042B CN110360042B CN201910444210.2A CN201910444210A CN110360042B CN 110360042 B CN110360042 B CN 110360042B CN 201910444210 A CN201910444210 A CN 201910444210A CN 110360042 B CN110360042 B CN 110360042B
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- CN
- China
- Prior art keywords
- fuel injector
- hole
- electric control
- connecting part
- thread connecting
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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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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0021—Construction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of layout structures in engines, in particular to a wiring structure of an electric control fuel injector, which has the advantages of simple and compact structure, convenient disassembly and maintenance, reliable guiding tightness and low cost.
Description
Technical Field
The invention relates to the technical field of layout structures in engines, in particular to a wiring structure of an electric control fuel injector.
Background
As emissions regulations become more stringent, it has become urgent to improve pollutants in diesel exhaust. In the prior art, the main technical route for solving the problem of exhaust pollutants of the diesel engine is to assemble a common rail system, a plurality of four-valve engines, an electric control fuel injector is arranged in a cylinder head cover, the linear speed between the electric control fuel injector and an ECU is connected, the transmission of electric signals of the electric control fuel injector is ensured to be normal, the tightness of a part passing through a cylinder or the cylinder head cover is ensured, the electric control fuel injector is a problem with certain difficulty, and a plurality of existing cylinder penetrating parts are arranged at home and abroad, but the electric control fuel injector is difficult to change a plurality of parts and is low in price.
Disclosure of Invention
The invention aims to solve the problems of difficult structure change and high cost in the prior art, and provides a wiring structure of an electric control fuel injector, which has the advantages of simple and compact structure, convenient disassembly and maintenance, reliable guiding tightness and low cost.
The technical scheme is as follows: the utility model provides a wiring structure of automatically controlled sprayer, its includes cylinder cap body subassembly, install the lid on the cylinder cap body subassembly and form the installation cavity, install intake valve, exhaust valve, valve spring, rocking arm, push rod in the installation cavity, push rod end connection rocking arm one end, the rocking arm other end is connected intake valve, exhaust valve tip, the exhaust valve with be provided with automatically controlled sprayer between the intake valve, the fuel injection port intercommunication of automatically controlled sprayer is located the combustion chamber in the piston, a serial communication port, automatically controlled sprayer passes through the clamp plate to be fixed, the oil inlet connection of automatically controlled sprayer runs through the high-pressure oil pipe of lid, high-pressure oil pipe with be provided with the sealing washer between the lid, the solenoid valve terminal connection double-screw of automatically controlled sprayer one end, the connection double-screw bolt other end run through install in the sealing member of lid and through lock nut is fixed.
The sealing piece is further characterized in that two through holes matched with the connecting studs are formed in the sealing piece, and a partition plate positioned between the two through holes is arranged on the upper end face of the sealing piece;
the connecting stud comprises a lower internal thread connecting part, a middle polish rod part and an upper external thread connecting part, the electromagnetic valve connecting column is in threaded connection with the lower internal thread connecting part, the size of the lower internal thread connecting part is larger than the inner diameter of the through hole, the size of the upper external thread connecting part is smaller than the inner diameter of the through hole and is exposed out of the sealing piece, and the upper external thread connecting part is provided with a connecting piece and a locking nut;
the inner wall of the through hole is a plane, and a stud sealing ring with the outer diameter larger than the inner diameter of the through hole is arranged on the outer surface of the middle polished rod part of the connecting stud;
an inner sealing ring is arranged on the inner wall of the through hole, and the inner diameter of the inner sealing ring is smaller than the outer diameter of the middle polish rod part of the connecting stud;
an outer sealing ring is arranged on the outer peripheral surface of the sealing piece;
a reinforcing plate is arranged in the sealing piece.
After the structure of the invention is adopted, the wire harness connected with the external ECU is connected with the wiring post of the electric control fuel injector through the connecting stud, so that the wire is prevented from entering the cover, the structure is simple and compact, the disassembly and maintenance are convenient, the guiding tightness is reliable, and the cost is low; furthermore, the through holes and the connecting studs are correspondingly provided with sealing structures, so that the sealing reliability is further ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the seal of the present invention;
FIG. 3 shows a seal structure according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic view of a coupling stud and lock nut according to an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a second seal member according to an embodiment of the present invention;
FIG. 7 is a schematic view of a coupling stud and lock nut according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 7, a wiring structure of an electric control fuel injector comprises a cylinder cover body assembly 1, wherein a cover 2 is arranged on the cylinder cover body assembly 1 to form an installation cavity, an air inlet valve 3, an air outlet valve 4, a valve spring 5, a rocker arm 6 and a push rod 7 are arranged in the installation cavity, one end of the push rod 7 is connected with one end of the rocker arm 6, the other end of the rocker arm 6 props against a valve bridge 8 connected with the end of the air inlet valve 3 and the end of the air outlet valve 4, an electric control fuel injector 9 is arranged between the air outlet valve 4 and the air inlet valve 3, a fuel injection port of the electric control fuel injector 9 is communicated with a combustion chamber 11 positioned in a piston 10, the other end of the push rod 7 is connected with a tappet 12, the tappet 12 is driven by a cam 13 to move up and down, the electric control fuel injector 9 is fixed by a pressing plate 14, a high-pressure oil pipe 15 penetrating through the cover 2 is arranged between the high-pressure oil pipe 15 and the cover 2, a solenoid valve binding post 17 of the electric control fuel injector 9 is connected with one end of a coupling stud 18, and the other end of the coupling stud 18 is fixed by a locking nut 20 and a coupling piece 21.
Embodiment one: the sealing element 19 is provided with two through holes 22 matched with the connecting studs 18, and the upper end surface of the sealing element 19 is provided with a baffle plate 23 positioned between the two through holes 22; the connecting stud 18 comprises a lower internal thread connecting part 18-1, an intermediate polish rod part 18-2 and an upper external thread connecting part 18-3, the electromagnetic valve connecting column 17 is in threaded connection with the lower internal thread connecting part 18-1, the size of the lower internal thread connecting part 18-1 is larger than the inner diameter of the through hole 22, the size of the upper external thread connecting part 18-3 is smaller than the inner diameter of the through hole 88 and is exposed out of the sealing piece 19, and the upper external thread connecting part 18-3 is provided with a connecting piece 21 and a locking nut 20; the inner wall of the through hole 22 is a plane, and the outer surface of the middle polished rod part 18-2 of the connecting stud 18 is provided with a stud sealing ring 18-4 with the outer diameter larger than the inner diameter of the through hole 22, so that the tight combination of the connecting stud 18 and the sealing piece 19 can be ensured, and the sealing performance is good; a reinforcing plate 24 is provided in the sealing member 19 to ensure strength.
Embodiment two: the sealing element 19 is provided with two through holes 22 matched with the connecting studs 18, and the upper end surface of the sealing element 19 is provided with a baffle plate 23 positioned between the two through holes 22; the connecting stud 18 comprises a lower internal thread connecting part 18-1, an intermediate polish rod part 18-2 and an upper external thread connecting part 18-3, the electromagnetic valve connecting column 17 is in threaded connection with the lower internal thread connecting part 18-1, the size of the lower internal thread connecting part 18-1 is larger than the inner diameter of the through hole 22, the size of the upper external thread connecting part 18-3 is smaller than the inner diameter of the through hole 88 and is exposed out of the sealing piece 19, and the upper external thread connecting part 18-3 is provided with a connecting piece 21 and a locking nut 20; the inner wall of the through hole 22 is provided with an inner sealing ring 25, the inner diameter of the inner sealing ring 25 is smaller than the outer diameter of the middle polish rod part 18-2 of the connecting stud 18, the tight combination of the connecting stud 18 and the sealing piece 19 can be ensured, and the tightness is good; a reinforcing plate 24 is arranged in the sealing piece 19 to ensure the strength; the outer peripheral surface of the sealing member 19 is provided with an outer seal ring 26, further ensuring sealability.
The outer edge of the sealing element 19 is provided with a notch 27 for screw fixation.
Claims (2)
1. The wiring structure of the electric control fuel injector comprises a cylinder cover body assembly, wherein a cover is arranged on the cylinder cover body assembly to form an installation cavity, an air inlet valve, an air outlet valve, an air valve spring, a rocker arm and a push rod are arranged in the installation cavity, the end part of the push rod is connected with one end of the rocker arm, the other end of the rocker arm is connected with the end parts of the air inlet valve and the air outlet valve, an electric control fuel injector is arranged between the air outlet valve and the air inlet valve, and a fuel injection port of the electric control fuel injector is communicated with a combustion chamber in a piston. Two through holes matched with the connecting studs are formed in the sealing piece, and a partition plate positioned between the two through holes is arranged on the upper end face of the sealing piece; the connecting stud comprises a lower internal thread connecting part, a middle polish rod part and an upper external thread connecting part, the electromagnetic valve connecting column is in threaded connection with the lower internal thread connecting part, the size of the lower internal thread connecting part is larger than the inner diameter of the through hole, the size of the upper external thread connecting part is smaller than the inner diameter of the through hole and is exposed out of the sealing piece, and the upper external thread connecting part is provided with a connecting piece and a locking nut; the inner wall of the through hole is a plane or is provided with an inner sealing ring, the outer surface of the middle polish rod part of the connecting stud is provided with a stud sealing ring with the outer diameter larger than the inner diameter of the through hole when the inner wall of the through hole is a plane, and the inner diameter of the inner sealing ring is smaller than the outer diameter of the middle polish rod part of the connecting stud when the inner wall of the through hole is provided with the inner sealing ring; the outer peripheral surface of the sealing element is provided with an outer sealing ring.
2. A wiring structure for an electrically controlled fuel injector as in claim 1, wherein a reinforcing plate is disposed within said seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444210.2A CN110360042B (en) | 2019-05-27 | 2019-05-27 | Wiring structure of electric control fuel injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910444210.2A CN110360042B (en) | 2019-05-27 | 2019-05-27 | Wiring structure of electric control fuel injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110360042A CN110360042A (en) | 2019-10-22 |
| CN110360042B true CN110360042B (en) | 2023-08-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910444210.2A Active CN110360042B (en) | 2019-05-27 | 2019-05-27 | Wiring structure of electric control fuel injector |
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| Country | Link |
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| CN (1) | CN110360042B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336032B (en) * | 2020-03-23 | 2022-03-22 | 安徽航瑞航空动力装备有限公司 | Engine valve chamber cover |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0942112A (en) * | 1995-08-02 | 1997-02-10 | Nissan Diesel Motor Co Ltd | Piping device of nozzle tube for feeding fuel in four valve diesel engine |
| JP2000257528A (en) * | 1999-03-05 | 2000-09-19 | Kubota Corp | Engine with fuel injection nozzle |
| JP2001263204A (en) * | 2000-03-15 | 2001-09-26 | Nissan Motor Co Ltd | Common rail type fuel injector of engine |
| CN203205566U (en) * | 2013-04-19 | 2013-09-18 | 西安兰德新能源汽车技术开发有限公司 | Wire harness connecting terminal used for electric control engine fuel injector |
| CN104993297A (en) * | 2015-08-10 | 2015-10-21 | 广西玉柴机器股份有限公司 | Electrically-controlled fuel injector wiring terminal protection cover |
| CN204961082U (en) * | 2015-08-10 | 2016-01-13 | 广西玉柴机器股份有限公司 | Wear jar control line |
| CN210217975U (en) * | 2019-05-27 | 2020-03-31 | 无锡动力工程股份有限公司 | Wiring structure of electric control oil injector |
-
2019
- 2019-05-27 CN CN201910444210.2A patent/CN110360042B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0942112A (en) * | 1995-08-02 | 1997-02-10 | Nissan Diesel Motor Co Ltd | Piping device of nozzle tube for feeding fuel in four valve diesel engine |
| JP2000257528A (en) * | 1999-03-05 | 2000-09-19 | Kubota Corp | Engine with fuel injection nozzle |
| JP2001263204A (en) * | 2000-03-15 | 2001-09-26 | Nissan Motor Co Ltd | Common rail type fuel injector of engine |
| CN203205566U (en) * | 2013-04-19 | 2013-09-18 | 西安兰德新能源汽车技术开发有限公司 | Wire harness connecting terminal used for electric control engine fuel injector |
| CN104993297A (en) * | 2015-08-10 | 2015-10-21 | 广西玉柴机器股份有限公司 | Electrically-controlled fuel injector wiring terminal protection cover |
| CN204961082U (en) * | 2015-08-10 | 2016-01-13 | 广西玉柴机器股份有限公司 | Wear jar control line |
| CN210217975U (en) * | 2019-05-27 | 2020-03-31 | 无锡动力工程股份有限公司 | Wiring structure of electric control oil injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110360042A (en) | 2019-10-22 |
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