CN213270070U - Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed - Google Patents
Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed Download PDFInfo
- Publication number
- CN213270070U CN213270070U CN202022257460.6U CN202022257460U CN213270070U CN 213270070 U CN213270070 U CN 213270070U CN 202022257460 U CN202022257460 U CN 202022257460U CN 213270070 U CN213270070 U CN 213270070U
- Authority
- CN
- China
- Prior art keywords
- oil
- electric control
- real
- return flow
- oil return
- 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.)
- Active
Links
Images
Classifications
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Fuel-Injection Apparatus (AREA)
Abstract
The utility model provides an automatically controlled sprayer single injection trouble real-time supervision device and common rail system test bench, include: the device comprises a fuel injector adapter 12, a pressure measuring assembly, a return oil flow channel assembly and data acquisition equipment. Through the comprehensive matching of the first throttling hole, the first oil return flow channel, the bag type energy accumulator, the oil rail and the second throttling hole multi-device, the measured fog dissipation volume pressure is stabilized at a reasonable horizontal value and a reasonable fluctuation range. The utility model discloses a to the real-time measurement of spraying rear end pressure, realize the real-time supervision to automatically controlled sprayer typical injection index, and then realize automatically controlled sprayer and spout fault monitoring.
Description
Technical Field
The utility model relates to a detect technical field, specifically, relate to an automatically controlled sprayer single injection trouble real-time supervision device and common rail system test bench.
Background
The electric control oil injector is used as a final executive device of the whole common rail system and is one of the most core components of a fuel supply system, and the electric control oil injector is used for injecting diesel oil to a specific part of a combustion chamber at fixed time and quantity according to certain pressure, an oil injection rule and spray characteristics according to the requirement of diesel engine mixed gas. The opening process time and the closing process time of the needle valve determine the proportion of the rising and falling sections of the oil injection rate, the effective average oil injection rate in the duration is influenced, the delay of the injection timing can cause the rise of the exhaust temperature and smoke exhaust index, and the formal advance of the injection can cause the increase of the NOx emission. Meanwhile, the circulating fuel injection quantity and the fuel injection duration are two most intuitive comprehensive performance indexes of the electric control fuel injector, and directly influence the power and the emission.
Patent document CN101886598A discloses a simple and easy automatically controlled sprayer testboard, including the oil tank, install the pressure action bars who provides pressure for the test oil on the oil tank, install the manometer on the oil tank for the installing support of installation sprayer, the sprayer passes through oil pipe connection oil tank and test oil recovery unit, its characterized in that: the test system also comprises an electric control mechanism for controlling the atomization of the oil sprayer. By adopting the structure, an operator can simultaneously press the operating rod and the electric switch, and can observe whether the oil sprayer sprays oil and the condition of fuel atomization at any time to determine whether the oil sprayer is damaged.
At present, in the process of platform testing, especially platform durability testing, of an electric control fuel injector, indirect monitoring such as an electromagnetic valve current signal and a common rail pipe pressure signal of the electric control fuel injector is generally adopted, or a periodic performance retest mode is adopted to monitor the performance index change of the fuel injector, so that real-time and single injection fault positioning and monitoring cannot be realized.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing an automatically controlled sprayer single sprays trouble real-time supervision device and common rail system test bench.
According to the utility model provides a pair of automatically controlled sprayer single sprays trouble real-time supervision device, include: the device comprises a fuel injector adapter 12, a pressure measuring assembly, an oil return flow channel assembly and data acquisition equipment;
the electric control oil injector to be tested is connected to the oil injector adapter device 12;
the pressure measurement assembly includes: the atomizing and defogging device 2, the pressure sensor 3 and the first throttling hole 5;
the input end of the spraying and fog dispersing device 2 is hermetically connected to the spray head of the electric control oil injector to be tested;
the pressure sensor 3 is connected to the spray fog dispersal device 2 and is used for detecting the pressure in the spray fog dispersal device 2;
the first throttling hole 5 is arranged at the output end of the spray mist elimination device 2;
the oil return flow path assembly is connected with the first orifice 5, the oil return flow path assembly includes: the system comprises a first oil return flow passage 6, a bag type energy accumulator 7, a second oil return flow passage 8, an oil rail 9 and a second throttling hole 10;
the two ends of the first oil return flow passage 6 are respectively connected with the first throttling hole 5 and the bag type energy accumulator 7, the two ends of the second oil return flow passage 8 are respectively connected with the bag type energy accumulator 7 and the input end of the oil rail 9, and the second throttling hole 10 is arranged at the output end of the oil rail 9.
Preferably, the spray mist elimination device 2 comprises: a fog dissipation volume, a fixing bolt and a sealing copper pad;
the fog dissipation volume is connected with the oil sprayer adapting device 12 through the fixing bolt and is sealed with the oil sprayer adapting device 12 through the sealing copper pad, and the fog dissipation volume is a pressure volume with a certain shape and volume determined according to different injection pressures and injection flow rates.
Preferably, the detection end of the pressure sensor 3 is arranged within the defogging volume.
Preferably, the output end of the electronic control fuel injector to be tested is hermetically connected in the input end of the spray mist elimination device 2.
Preferably, the pressure sensor 3 comprises a high frequency directional pressure sensor.
Preferably, the first orifice 5 includes a variable orifice.
Preferably, the oil return flow passage assembly further includes a third oil return flow passage 11, and one end of the third oil return flow passage 11 is connected to the second throttle hole 10.
Preferably, the first oil return flow passage 6 comprises an elongated hose or a coiled seamless steel pipe.
Preferably, the data acquisition device comprises an acquisition card or a combustion analyzer.
According to the utility model provides a pair of common rail system test bench, including foretell automatically controlled sprayer single injection trouble real-time supervision device.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. due to the real-time property of pressure fluctuation transmission, the device can realize real-time and single fault detection under the platform condition, and compared with the traditional methods such as electric signal monitoring and the like, the device can realize the monitoring of main technical indexes such as formal injection, needle valve opening and closing processes, circulating injection quantity, injection duration and the like of the electric control oil injector, and can effectively monitor and analyze typical faults such as stop injection of the oil injector, abnormal injection of large oil amount due to clamping stagnation and the like in real time.
2. The device has the advantages of simple structure, compact arrangement, lower modification cost and good economy.
3. The device is subjected to performance test of a fuel injector platform and multi-level platform verification of a high-pressure common rail system platform endurance test, and has extremely high technical value and application value and good reliability in the processes of prediction, positioning and analysis of various faults in a platform test, particularly a platform endurance reliability test.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of the device of the present invention;
FIG. 2 is a schematic structural diagram of the device of the present invention;
fig. 3 is the schematic diagram of the data acquisition device of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
The utility model aims at providing a platform test real-time monitoring device aiming at the injection fault of an electric control oil injector; the method is characterized in that a related volume cavity is arranged at the rear end of a spray hole of the electric control oil sprayer, pressure characteristic analysis of the rear end of the spray is carried out through collection of sprayed oil quantity after the electric control oil sprayer sprays and measurement of pressure, and under the condition that the spray hole is fixed, the pressure curve directly determines the curve shape of an oil spraying rate, so that the main technical indexes of the electric control oil sprayer, such as the opening and closing process of a needle valve, the circulating oil spraying quantity, the oil spraying duration and the like, abnormal changes of the main technical indexes, such as the stopping and spraying of the oil sprayer, the abnormal spraying of the large oil.
As shown in fig. 1 and fig. 2, the utility model provides a pair of automatically controlled sprayer single sprays trouble real-time supervision device, include: the device comprises a fuel injector adapter 12, a pressure measuring assembly, a return oil flow channel assembly and data acquisition equipment.
The electronic control oil injector to be tested is connected to the oil injector adapter device 12, the output end of the electronic control oil injector to be tested is hermetically connected into the input end of the spraying fog dissipation device 2, and effective sealing is formed to guarantee the accuracy of a pressure measurement signal.
The pressure measurement assembly includes: a spray mist eliminator 2, a pressure sensor 3 and a first orifice 5. The input end of the spraying fog dispersal device 2 is hermetically connected to the nozzle of the electric control oil injector to be detected, the pressure sensor 3 is connected to the spraying fog dispersal device 2 to detect the pressure in the spraying fog dispersal device 2, and the first throttling hole 5 is arranged at the output end of the spraying fog dispersal device 2.
The spray mist eliminating device 2 includes: fog dissipation volume, fixing bolt and sealed copper pad. The fog dissipation volume is connected with the oil sprayer adapting device 12 through a fixing bolt and is sealed with the oil sprayer adapting device 12 through a sealing copper pad, the fog dissipation volume is a pressure volume with a certain shape and volume determined according to different injection pressures and injection flow, and the inner wall of the fog dissipation volume is treated by adopting a strengthening process and is used for electrically controlling the collection, the silencing and the filtering of oil beams injected by the oil sprayer. The detection end of the pressure sensor 3 is arranged in the fog dissipation volume, and the pressure sensor 3 comprises a high-frequency pressure sensor used for collecting fuel oil sprayed by the electric control fuel injector and a real-time measurement result of pressure change in the fog dissipation volume caused by the fuel oil.
The first throttling hole 5 is a variable throttling hole, is positioned at an oil outlet of the fog dissipation volume, is fixed in the fog dissipation volume through an adapter, and integrates different working conditions, different sensor types and different oil circuit configurations to determine the aperture size.
The oil return flow path assembly is connected with the first orifice 5, and the oil return flow path assembly includes: the system comprises a first oil return flow passage 6, a bag type energy accumulator 7, a second oil return flow passage 8, an oil rail 9, a second throttling hole 10 and a third oil return flow passage 11. Two ends of the first oil return flow passage 6 are respectively connected with the first throttling hole 5 and the bag type energy accumulator 7, two ends of the second oil return flow passage 8 are respectively connected with the bag type energy accumulator 7 and the input end of the oil rail 9, and the second throttling hole 10 is arranged at the output end of the oil rail 9. One end of the third oil return flow passage 11 is connected to the second orifice 10, and the other end is used for leading oil out of the device.
The first throttling hole plays a role in throttling and pressure accumulating, so that the internal pressure of the defogging volume measured by the pressure measurement module has good consistency with the injection index of the electric control oil injector, and the real-time fault monitoring requirement is met.
The first oil return flow passage is made of a long and thin hose or a disk-shaped seamless steel pipe and is matched with a throttling hole for use, the pressure reducing and stabilizing effects are achieved, the internal pressure level and pressure fluctuation of an oil passage can be effectively reduced, overlarge impact on a rear-end bag type energy accumulator is avoided, and the diameter of the pipeline can be determined through numerical simulation or experimental research according to specific injection parameters of the electric control oil injector and the operation requirements of the bag type energy accumulator.
The bag type energy accumulator mainly plays a role in filtering and stabilizing pressure, and effectively reduces the pressure level and pressure fluctuation in the fog dissipation volume.
The oil rail and the second throttling hole also play roles in filtering and stabilizing pressure, and the pressure level and pressure fluctuation in the fog dissipation volume are further reduced.
The data acquisition device shown in fig. 3 includes an acquisition card or combustion analyzer. The utility model discloses a first orifice, first return oil runner, bag formula energy storage ware, oil rail and the many devices of second orifice comprehensive match, with the fog dissipation volume pressure stability that measures at a reasonable level value and reasonable fluctuation range. The utility model discloses a to the real-time measurement of spraying rear end pressure, realize the real-time supervision to automatically controlled sprayer typical injection index, and then realize automatically controlled sprayer and spout fault monitoring.
The utility model discloses can be applied to common rail system test bench.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. The utility model provides an automatically controlled sprayer single injection trouble real-time supervision device which characterized in that includes: the device comprises a fuel injector adapter device (12), a pressure measuring assembly, an oil return flow channel assembly and data acquisition equipment;
the electronic control oil injector to be tested is connected to the oil injector adapter device (12);
the pressure measurement assembly includes: the device comprises a spray mist elimination device (2), a pressure sensor (3) and a first throttling hole (5);
the input end of the spray fog dispersal device (2) is hermetically connected to the spray head of the electric control oil injector to be tested;
the pressure sensor (3) is connected to the spray fog dispersal device (2) and is used for detecting the pressure in the spray fog dispersal device (2);
the first throttling hole (5) is arranged at the output end of the spray mist elimination device (2);
the oil return flow path assembly is connected with the first orifice (5), and the oil return flow path assembly includes: the oil return device comprises a first oil return flow passage (6), a bag type energy accumulator (7), a second oil return flow passage (8), an oil rail (9) and a second throttling hole (10);
the two ends of the first oil return flow channel (6) are respectively connected with the first throttling hole (5) and the bag type energy accumulator (7), the two ends of the second oil return flow channel (8) are respectively connected with the bag type energy accumulator (7) and the input end of the oil rail (9), and the second throttling hole (10) is arranged at the output end of the oil rail (9).
2. The real-time monitoring device for single injection fault of the electric control fuel injector according to claim 1, characterized in that the spray defogging device (2) comprises: a fog dissipation volume, a fixing bolt and a sealing copper pad;
the fog dissipation volume is connected with the oil sprayer adapting device (12) through the fixing bolt, and is sealed with the oil sprayer adapting device (12) through the sealing copper gasket, and the fog dissipation volume is a pressure volume which is determined to be of a certain shape and volume according to different injection pressures and injection flow rates.
3. The device for monitoring the single-injection fault of the electric fuel injector according to claim 2, characterized in that the detection end of the pressure sensor (3) is arranged in the defogging volume.
4. The device for monitoring the single-injection fault of the electric control oil injector in real time as claimed in claim 1, is characterized in that the output end of the electric control oil injector to be tested is hermetically connected in the input end of the spray mist elimination device (2).
5. The real-time single injection fault monitoring device of the electric control fuel injector according to claim 1, characterized in that the pressure sensor (3) comprises a high-frequency directional pressure sensor.
6. The real-time monitoring device for single injection faults of the electric control fuel injector according to claim 1, characterized in that the first throttle hole (5) comprises a variable throttle hole.
7. The real-time single injection fault monitoring device of the electric control oil injector according to claim 1, characterized in that the oil return flow passage assembly further comprises a third oil return flow passage (11), and one end of the third oil return flow passage (11) is connected with the second throttle hole (10).
8. The device for monitoring the single injection fault of the electric control fuel injector in real time according to the claim 1, characterized in that the first return flow channel (6) comprises an elongated hose or a disk-shaped seamless steel pipe.
9. The device for monitoring the single injection fault of the electric control fuel injector in real time according to the claim 1, is characterized in that the data acquisition equipment comprises an acquisition card or a combustion analyzer.
10. A common rail system test bed, characterized by comprising an electric control fuel injector single injection fault real-time monitoring device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022257460.6U CN213270070U (en) | 2020-10-12 | 2020-10-12 | Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022257460.6U CN213270070U (en) | 2020-10-12 | 2020-10-12 | Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213270070U true CN213270070U (en) | 2021-05-25 |
Family
ID=75948943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022257460.6U Active CN213270070U (en) | 2020-10-12 | 2020-10-12 | Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213270070U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096531A (en) * | 2020-10-12 | 2020-12-18 | 中国船舶重工集团公司第七一一研究所 | Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed |
-
2020
- 2020-10-12 CN CN202022257460.6U patent/CN213270070U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096531A (en) * | 2020-10-12 | 2020-12-18 | 中国船舶重工集团公司第七一一研究所 | Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed |
| CN112096531B (en) * | 2020-10-12 | 2024-03-29 | 中国船舶集团有限公司第七一一研究所 | Single-injection fault real-time monitoring device of electric control fuel injector and common rail system test bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105003372B (en) | A kind of distributive value method for diagnosing faults based on the observation of rail pressure waveform feature parameter | |
| CN110805483B (en) | Air-assisted SCR urea consumption low fault diagnosis method | |
| CN100455790C (en) | Engine common rail fuel combustion system endurance test device and testing method thereof | |
| CN109681304A (en) | A kind of SCR system urea nozzle blocking recognition methods | |
| CN103257216B (en) | A kind of measurement mechanism of cetane number of fuel | |
| CN103498732B (en) | Diesel/natural gas dual-fuel internal-combustion engine control oil system | |
| JP6114301B2 (en) | Fuel injection feedback system and method | |
| CN105888910B (en) | A kind of atomizer balancing gate pit pressure measurement method | |
| CN104569652A (en) | Gas fixed-value checking table for simulating heavy gas fault realization of transformer and checking method | |
| CN206847952U (en) | A kind of gas-turbine combustion chamber analogue experiment installation | |
| CN103321809B (en) | Oil injector fault checking method and device | |
| CN213270070U (en) | Single injection fault real-time monitoring device of electric control oil injector and common rail system test bed | |
| CN102705089B (en) | A kind of method and system based on the variation of rail pressure Signal analysis spray orifice flow | |
| CN206221124U (en) | It is a kind of to investigate the instrument that common-rail injector high pressure reveals failure | |
| CN101881246A (en) | Measuring device and method of response time of fuel injector | |
| CN203519626U (en) | Automatic calibration device for transformer gas in oil | |
| CN204241592U (en) | The gas fixed value checking platform that a kind of analogue transformer grave gas fault realizes | |
| CN105003373A (en) | Fault diagnosing method of observing injection timing based on characteristic parameters of waveform of rail pressure | |
| CN109186981A (en) | A kind of high-power nozzle group valve discharge characteristic is test bed | |
| CN112096531B (en) | Single-injection fault real-time monitoring device of electric control fuel injector and common rail system test bed | |
| CN108956956B (en) | Integrated test device and method for measuring water content in fuel oil water distribution | |
| CN205374015U (en) | SCR urea jet measures test bench | |
| CN109026484A (en) | The control system of automotive air induction duct formula fuel injector on-line checking platform | |
| CN201514326U (en) | Performance test device for flow limiting valve of common rail fuel system | |
| CN113530737B (en) | Comprehensive testing method for performance of engine oil injector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |