CN2895779Y - Fuel-injector fuel-oil cut-offdevice - Google Patents
Fuel-injector fuel-oil cut-offdevice Download PDFInfo
- Publication number
- CN2895779Y CN2895779Y CNU2005200212251U CN200520021225U CN2895779Y CN 2895779 Y CN2895779 Y CN 2895779Y CN U2005200212251 U CNU2005200212251 U CN U2005200212251U CN 200520021225 U CN200520021225 U CN 200520021225U CN 2895779 Y CN2895779 Y CN 2895779Y
- Authority
- CN
- China
- Prior art keywords
- fuel
- oil
- nozzle holder
- injector
- valve
- 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
Links
Images
Abstract
The utility model relates to a fuel-injector fuel-oil cut-off device belonging to fuel-oil-injecting component in diesel engine fuel-oil system. A shake prevention spring is provided in the shell hole of the fuel-injector, a needle valve sheathed with a sealing ring is inserted on the shake prevention spring. the whole body is located in the shell hole of the fuel-injector. The front end of the needle valve mates with the oil hole valve base of the fuel-injector shell, a thread rod is provided in the shell hole of the fuel-injector through threads. And the inside end surface of the thread rod contacts closely with the back end surface of the needle valve. A lock-nut is arranged on the thread rod. The device can be used for power-measuring, oil-measuring and fault-checking and diagnosis of diesel engines, has simple structure, multi-purpose application, diversified functions, expedient operation, exact measuring, no shake during working, low noise, no fuel-oil leaking.
Description
Technical field
The utility model belongs to the oil spout workpiece in the diesel fuel system.
Background technique
During to diesel engine power in the production utilization and oil consumption detection, traditional approach is to adopt not have the outer non-braking measurement of power equipment that carries, because it is better that operating diesel engine group of planes state of the art is detected practicability, obtain certain applying, shortcoming is to need dismounting high-pressure oil feed pipe and low pressure return tube before and after measurement of power, the survey wet goods, connects or dismounting externally connected type measurement of power fuel cut (FC), not only trivial operations, the original sealing state well of destructible, and complex structure, cost height.In order to overcome the defective that above-mentioned detection facility exists, in the last few years, the integral type oil sprayer that fuel cut (FC) is configured on the oil sprayer has appearance, but because such fuel cut (FC) has adopted the ball type valve structure, steel ball and valve seat bump and vibration easily take place in steel ball when high pressure oil stream impacts, make the oil mass fluctuation that sprays in the cylinder very big, can not guarantee measuring accuracy; The impact of high pressure oil stream is rotated steel ball, and the irregular change in location of steel ball makes sealing decline between steel ball and the valve seat; In addition, in ball type valve structure fuel cut (FC), sealing configuration is not set, is easy to draining.
Summary of the invention
The purpose of this utility model is exactly technical problem and the defective that exists at the ball type valve fuel cut (FC), design provides a kind of oil sprayer fuel cut (FC) of new-type structure, reaches that friction when detecting operation, noise are little, good airproof performance, no fuel oil leaks, measuring accuracy is high purpose.
Basic design of the present utility model is, hold equipped vibration-proof spring inside at the fuel injection housing body opening, the needle-valve that suit seal ring is inserted on the vibration-proof spring, integral body is arranged in the fuel injection housing body opening, the front end of needle-valve matches with the oilhole valve seat of nozzle holder, seal ring and nozzle holder hole wall contact matching, and screw mandrel can move axially the ground spinning on the fuel injection housing body opening, its inner end closely contacts with the needle-valve ear end face, with needle-valve axially locating in the hole of nozzle holder; Locking nut is installed on the screw mandrel, so far constitutes the oil sprayer fuel cut (FC).
The utility model is installed in can finish fuel injection on the diesel engine, do not have the outer multinomial work such as Injection Pump fuel delivery detections on single cylinder measurement of power, the machine, trouble shooting judgement of carrying, have simple in structure, multi-use, can realize that diesel engine power is tested oneself especially, detect on the machine fuel delivery, easy to use, measure accurately, friction during operation, little, the no fuel oil of noise leaks wastes and pollution characteristics.
Description of drawings
Accompanying drawing is an oil sprayer fuel cut (FC) general structure schematic representation.
Piece number explanation among the figure:
1, injector assembly, 2, screw mandrel, 3, locking nut, 4, nozzle holder, 5, needle-valve, 6, seal ring, 7, vibration-proof spring, 8, oil connection, 9, oilhole valve seat.
Embodiment
Below in conjunction with accompanying drawing the utility model optimum implementation is described in detail.The oil sprayer fuel cut (FC) comprises injector assembly 1 and nozzle holder 4, oil connection 8, the equipped vibration-proof spring 7 in inner end in nozzle holder 4 holes, the needle-valve 5 that suit seal ring 6 is inserted on the vibration-proof spring 7, integral body is arranged in nozzle holder 4 holes, the front end of needle-valve 5 matches with the oilhole valve seat 9 of nozzle holder 4, seal ring 6 and nozzle holder 4 hole walls sealing contact matching; Screw mandrel 2 can move axially the ground spinning on nozzle holder 4 holes, and its inner end closely contacts with needle-valve 5 ear end faces, with needle-valve 5 axially locating in nozzle holder 4 holes.Be positioned at equipped locking nut 3 on screw mandrel 2 positions of nozzle holder 4 lateral parts.
When being used for the injected fuel operation, screw mandrel 2 is inwardly screwed in, pushing needle-valve 5 and vibration-proof spring 7 are landed on the oilhole valve seat 9 of nozzle holder 4 needle-valve 5, close the draining passage, and locking nut 3 gets final product screw mandrel 2 lockings; When being used for the measurement of power operation, unscrew locking nut 3, outwards screw out screw mandrel 2, make needle-valve 5 under vibration-proof spring 7 and fuel pressure, leave oilhole valve seat 9, make fuel oil return fuel tank from the oil sprayer way to cycle oil, the cylinder fuel oil is cut off, and cylinder quits work, operate according to this until single cylinder work, do not have the outer single cylinder measurement of power that carries; When being used for the trouble shooting judgement, operating method is identical with measurement of power, and difference is in the fuel feeding that only cuts off a cylinder, stops its work; When being used to detect the Injection Pump fuel delivery, operating method is also identical with measurement of power, and difference is to regulate the amount of fuel that sprays in the working cylinder with the gap of screw mandrel 2 control needle-valves 5 with oilhole valve seat 9, make diesel engine when full throttle, be operated in rated engine speed, with the fuel delivery of surveying oily measurement device inoperative cylinder.
Claims (2)
1, a kind of oil sprayer fuel cut (FC), comprise injector assembly (1) and nozzle holder (4), oil connection (8), it is characterized in that the equipped vibration-proof spring (7) in inner end in nozzle holder (4) hole, the needle-valve (5) that suit seal ring (6) is inserted on the vibration-proof spring (7), integral body is arranged in nozzle holder (4) hole, the front end of needle-valve (5) matches with the oilhole valve seat (9) of nozzle holder (4), seal ring (6) and nozzle holder (4) hole wall sealing contact matching; Screw mandrel (2) can move axially the ground spinning on nozzle holder (4) hole, and its inner end closely contacts with needle-valve (5) ear end face, with needle-valve (5) axially locating in nozzle holder (4) hole.
2, oil sprayer fuel cut (FC) according to claim 1 is characterized in that being positioned at equipped locking nut (3) on screw mandrel (2) position of nozzle holder (4) lateral part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200212251U CN2895779Y (en) | 2005-07-14 | 2005-07-14 | Fuel-injector fuel-oil cut-offdevice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200212251U CN2895779Y (en) | 2005-07-14 | 2005-07-14 | Fuel-injector fuel-oil cut-offdevice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2895779Y true CN2895779Y (en) | 2007-05-02 |
Family
ID=38065356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200212251U Expired - Fee Related CN2895779Y (en) | 2005-07-14 | 2005-07-14 | Fuel-injector fuel-oil cut-offdevice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2895779Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454275A (en) * | 2014-12-22 | 2015-03-25 | 常州博瑞油泵油嘴有限公司 | Synchronous oil supply and hold-down device for detecting high-pressure common-rail oil sprayer online and application method thereof |
-
2005
- 2005-07-14 CN CNU2005200212251U patent/CN2895779Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454275A (en) * | 2014-12-22 | 2015-03-25 | 常州博瑞油泵油嘴有限公司 | Synchronous oil supply and hold-down device for detecting high-pressure common-rail oil sprayer online and application method thereof |
| CN104454275B (en) * | 2014-12-22 | 2019-08-02 | 常州博瑞油泵油嘴有限公司 | A kind of synchronous fuel feeding of high pressure common rail injector on-line checking and pressing device and its application method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105156244B (en) | A kind of single cylinder diesel engine fuel jet electronic monoblock pump | |
| CN111828203B (en) | Gas jet valve of low-speed machine for ship | |
| CN2895779Y (en) | Fuel-injector fuel-oil cut-offdevice | |
| CN106523226B (en) | High-pressure common rail system of diesel engine | |
| CN102269649B (en) | Online test method of piston cooling spraying hook of engine | |
| CN201016835Y (en) | Engine cylinder cover pad sealing performance detecting apparatus | |
| CN101216007A (en) | Diesel engine fuel injector mounting structure | |
| CN104033298B (en) | Oil feed pump assembly impurity collection device | |
| CN201381921Y (en) | Single-cylinder small cylinder bore high-speed diesel engine fuel injection assembly | |
| CN206668408U (en) | A kind of cleaning device for vehicle fuel injector | |
| CN202216841U (en) | Observation apparatus for engine piston coolant oil injection simulation | |
| CN207660759U (en) | The special electric-controlled fuel injector experiment of card is with being loaded and oil-collecting modular appliance | |
| CN209115239U (en) | A kind of fuel injection pump tester detection system | |
| CN109909090B (en) | High-pressure environment single-droplet generating device | |
| CN2275166Y (en) | Test table for oil injector | |
| CN107905931B (en) | Common rail oil injector without oil return | |
| CN206268002U (en) | Electrically-controlled pump nozzle oil spout oil catcher | |
| CN209671099U (en) | A kind of burning-aid device of I. C. engine | |
| CN207104706U (en) | A kind of NOP Nozzle Opening Pressure test cartridge | |
| CN105257362A (en) | Common rail type air cylinder oil injection lubricating system | |
| CN212615105U (en) | Negative pressure fuel oil return pipe | |
| CN210106050U (en) | Diesel engine fuel injector testing device | |
| CN208831086U (en) | A kind of pressure control type piston cooling spray nozzle structure | |
| CN110848064A (en) | Device and method for testing oil injection condition of oil injection nozzle in generator set target test | |
| CN217632747U (en) | Oil sprayer atomization detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070502 |