CN112709655A - Electric control high-pressure common rail system tightness detection device - Google Patents
Electric control high-pressure common rail system tightness detection device Download PDFInfo
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- CN112709655A CN112709655A CN202110134497.6A CN202110134497A CN112709655A CN 112709655 A CN112709655 A CN 112709655A CN 202110134497 A CN202110134497 A CN 202110134497A CN 112709655 A CN112709655 A CN 112709655A
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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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
- F02M65/006—Measuring or detecting fuel leakage of fuel injection apparatus
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Abstract
The invention discloses a device for detecting the sealing performance of an electric control high-pressure common rail system, which comprises a high-pressure gas source assembly, a pressure stabilizing pipeline connected with the high-pressure gas source assembly, an oil pump assembly, a filtering pipeline connected with the oil pump assembly, a mixing pipeline respectively connected with the pressure stabilizing pipeline and the filtering pipeline simultaneously, a plurality of connecting pipelines respectively inserted at the tail end of the mixing pipeline, and a plurality of electric control high-pressure common rail systems respectively connected with the connecting pipelines, wherein the mixing pipeline and the connecting pipelines are respectively provided with a pressure sensor, and the joints of the plurality of electric control high-pressure common rail systems are respectively provided with a sealing detection assembly for detecting the sealing performance of each pipeline joint of the electric control high-pressure common rail systems. Through the mode, the pressure sensor is arranged, the internal tightness of the system is detected through a differential pressure method, a plurality of groups of different electric control high-pressure systems can be detected simultaneously in a plugging mode, and the tightness of each connecting port on the system can be detected.
Description
Technical Field
The invention relates to the field of diesel engines, in particular to a device for detecting the sealing performance of an electronic control high-pressure common rail system.
Background
With the rapid increase of urban transportation vehicles and ships in various countries in the world, the tail gas emitted by diesel engines has become a main pollution source for the global environment, and various countries in the world have started to find and take effective technical measures to actively reduce and control the emission of pollutants.
The electronic control high-pressure common rail system has various components and complex installation, and in order to reduce potential safety hazards and ensure normal work of the system, the constant high-pressure tightness of the high-pressure common rail system needs to be ensured.
The prior art provides a high-pressure common rail system tightness detection device, which comprises a common rail injection pump separated from a common rail diesel engine, wherein a motor for driving the common rail injection pump to act is arranged corresponding to the common rail injection pump; the utility model discloses a rail injection pump is altogether exported to the peripheral hardware, detect the verification to its leakproofness through measuring the internal fuel pressure of rail system altogether, avoided repeated dismouting and played the guard action to the diesel engine, however its additional a whole set of oil feed subassembly carries out the leakproofness and detects, the huge use of structure is inconvenient, the device fails to detect the fuel supply module leakproofness of automatically controlled high pressure rail system altogether, and it carries out the sealed detection of back pressure formula to the system inside through pouring into diesel oil into, the reaction rate is slow, degree of automation is low, more because pour into diesel oil into and need carry out secondary filter, further slow down response speed, and make this leakproofness detection device use cost height.
Therefore, it is necessary to design a device for detecting the tightness of an electrically controlled high-pressure common rail system, which has a simple structure, is convenient to operate, has a high response speed, and can simultaneously detect a plurality of systems and independently detect the tightness of a plurality of connecting ports of each system.
Disclosure of Invention
In order to solve the problem of the existing tightness detection device of the electric control high-pressure common rail system, the invention provides the tightness detection device of the electric control high-pressure common rail system, which can simultaneously detect the tightness of a plurality of groups of different electric control high-pressure common rail systems by obtaining a pressure difference value through a pressure sensor at a system access position, and seal detection assemblies are respectively arranged at the connection positions among all assemblies of the electric control high-pressure common rail system to independently detect the sealing condition at the interface positions.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an automatically controlled high pressure common rail system leakproofness detection device, including high-pressure gas source subassembly, with steady voltage pipeline, the oil pump subassembly that high-pressure gas source subassembly is connected, with the filter line that oil pump subassembly is connected, respectively with the hybrid tube way that steady voltage pipeline and filter line connect simultaneously, peg graft respectively in a plurality of connecting tubes of hybrid tube way tail end, respectively with a plurality of automatically controlled high pressure common rail system that the connecting tube connects, all be provided with pressure sensor on hybrid tube way and the connecting tube way, it is a plurality of automatically controlled high pressure common rail system's kneck all is provided with sealed detection subassembly for detect the leakproofness of each pipeline interface of automatically controlled high pressure common rail system.
Further, the tail end of the pressure stabilizing pipeline and the tail end of the filtering pipeline are connected with the mixing pipeline through a three-way pipe, a first branch pipe is arranged on the mixing pipeline, and a first pressure sensor is arranged in the first branch pipe; and the tail end of the mixing pipeline is provided with a plurality of second branch pipes connected with the electric control high-pressure common rail system.
Furthermore, a plurality of second branch pipes all pass through assorted interface module and a plurality of connecting tube connects, interface module is sealed plug-in interface, its include with the second branch pipe connection public head, with female seat that connecting tube connects.
Furthermore, a plurality of third branch pipes are arranged on the connecting pipelines, and a plurality of second pressure sensors are arranged in the third branch pipes.
Furthermore, the electronic control high-pressure common rail system comprises a common rail pipeline connected to the tail end of the connecting pipeline, a plurality of shunting ports arranged below the common rail pipeline, a drainage pipeline with one end connected with the shunting ports, and an oil injector connected with the other end of the drainage pipeline, wherein sealing detection assemblies are arranged at the joint of the connecting pipeline and the common rail pipeline, the joint of the shunting ports and the drainage pipeline, and the joint of the drainage pipeline and the oil injector.
Furthermore, the sealing detection assembly comprises a sealing pipeline which is connected with the joint in a matching mode, openings at two ends of the sealing pipeline are respectively connected with the outer sides of the upper portion and the lower portion of the joint in a matching mode, the caliber of the middle portion of the sealing pipeline is larger than that of the outer side face of the joint, a cavity is formed between the upper portion and the lower portion of the joint and is provided with an annular groove hole, an elastic sealing ring is connected to the annular groove hole in a matching mode, the cavity is sealed, a through hole is formed in the upper portion of the cavity, and a pressure gauge is connected to the inner portion of the through hole in a.
Furthermore, a first electromagnetic valve, a pneumatic duplex piece and a second electromagnetic valve are sequentially arranged on the pressure stabilizing pipeline from the air inlet connected with the high-pressure air source assembly.
Furthermore, a gear pump and a third electromagnetic valve are sequentially arranged on the filtering pipeline from an oil inlet connected with the oil pump assembly.
Furthermore, the high-pressure air source assembly is internally provided with an air pressure control module, so that the pressure value of the high-pressure air flow can be changed.
The control assembly comprises a microprocessor and an indicating unit, a timing unit is arranged in the microprocessor, the signal input end of the microprocessor is respectively connected to the first pressure sensor, the second pressure sensor and the pressure gauge, and the signal output end of the microprocessor is connected to the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the gear pump and the indicating unit.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the device for detecting the sealing performance of the electronic control high-pressure common rail system, the pressure sensors are arranged on the mixing pipeline and the connecting pipeline, so that the air pressure difference in the channels is detected, and the sealing performance of each detected electronic control high-pressure common rail system is judged; meanwhile, an oil inlet pipeline is connected to the mixing pipeline of the device, so that the internal air volume of the electric control high-pressure common rail system to be detected is reduced, and the response speed of the detection device is improved.
2. According to the device for detecting the sealing performance of the electric control high-pressure common rail system, the high-pressure gas source assembly and the oil pump assembly are arranged independently, and the pneumatic duplex piece is used for stabilizing the pressure of the high-pressure gas, so that the complex structure that the traditional multi-stage filtration and the multi-stage pump body are matched with the oil tank is eliminated, the detection structure is optimized, and the mounting and dismounting are not needed; meanwhile, gas is selected as a tightness detection medium, so that the structure is simple, the cost is low, and the operation is convenient.
3. According to the device for detecting the sealing performance of the electric control high-pressure common rail system, the plurality of branch pipelines are arranged at the tail end of the mixing pipeline and can be connected to different electric control high-pressure common rail systems, and different sealing plug-in components can be matched and plugged, so that the device is convenient to disassemble and replace different systems, and the system diversity and the convenience which can be detected by the device are improved.
4. According to the device for detecting the sealing performance of the electric control high-pressure common rail system, the sealing detection assemblies are arranged at the joints of different electric control high-pressure common rails, so that the sealing performance can be simultaneously detected for different connectors, and the sealing performance of the joints can be judged by reading the pressure gauges on the joints.
Drawings
FIG. 1 is a schematic diagram of an axial structure of the present invention;
FIG. 2 is an enlarged view of a portion of area A of FIG. 1;
FIG. 3 is a schematic top view of the present invention;
FIG. 4 is a schematic axial view of the seal detection assembly of the present invention;
FIG. 5 is a schematic side view of the seal detection assembly of the present invention;
FIG. 6 is a cross-sectional view taken along direction B in FIG. 5;
FIG. 7 is a schematic view of the control assembly connections of the present invention;
the parts in the drawings are numbered as follows: 1. a high pressure gas source assembly; 2. an oil pump assembly; 3. a pressure stabilizing pipeline; 31. a first solenoid valve; 32. a pneumatic duplex piece; 33. a second solenoid valve; 4. a filtration pipeline; 41. a gear pump; 42. a third electromagnetic valve; 5. a three-way pipe; 6. a mixing duct; 61. a first pressure sensor; 62. a male head; 7. a drainage conduit; 8. connecting a pipeline; 81. a second pressure sensor; 82. a female seat; 9. a common rail conduit; 10. a seal detection assembly; 101. sealing the pipeline; 102. a pressure gauge; 103. an elastic sealing ring; 111. a microprocessor; 112. a timing unit; 113. and an indication unit.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 1, a device for detecting the sealing performance of an electronic control high-pressure common rail system comprises a high-pressure air source component 1, a pressure stabilizing pipeline 3 connected with the high-pressure air source component 1, an oil pump component 2, a filtering pipeline 4 connected with the oil pump component 2, a mixing pipeline 6 respectively connected with the pressure stabilizing pipeline 3 and the filtering pipeline 4 at the same time, a plurality of connecting pipelines 8 respectively inserted at the tail end of the mixing pipeline 6, and a plurality of electronic control high-pressure common rail systems respectively connected with the connecting pipelines 8, wherein the high-pressure air source component 1 inputs pressure stabilizing air flow to the electronic control high-pressure common rail systems through the pressure stabilizing pipeline 3, the oil pump component 2 inputs diesel oil to the electronic control high-pressure common rail systems through the filtering pipeline 4 to reduce the air volume in the pipelines and accelerate the response speed of detection, and pressure sensors are respectively arranged on the mixing pipeline 6, accessible pressure sensor detects everywhere pressure value and judges through the differential pressure method that the leakproofness is good bad, and a plurality of the kneck of automatically controlled high pressure common rail system all is provided with sealed detection subassembly 10 for detect the leakproofness of each pipeline interface of automatically controlled high pressure common rail system, the better sealed condition of confirmation of being convenient for, in time change maintain corresponding subassembly.
As shown in fig. 3, in this embodiment, the tail end of the pressure stabilizing pipe 3 and the tail end of the filtering pipe 4 are connected to the mixing pipe 6 through a three-way pipe 5, a first branch pipe is arranged on the mixing pipe 6, a first pressure sensor 61 is arranged in the first branch pipe, and the first pressure sensor 61 reads the pressure value at this position; the tail end of the mixing pipeline 6 is provided with a plurality of second branch pipes connected with the electric control high-pressure common rail system, and the sealing detection can be simultaneously carried out on a plurality of electric control high-pressure common rail systems.
As shown in fig. 2, in this embodiment, it is a plurality of the second branch pipe all through assorted interface module and a plurality of connecting tube 8 connects, interface module can follow according to actual demand and trade, and easy dismounting has increased detection device's convenience, interface module is sealed plug-in interface, its include with second branch union coupling's public head 62, with female seat 82 that connecting tube 8 is connected, the second branch pipe with connecting tube 8 is through the public head 62 and the female seat 82 sealing connection of cooperation grafting.
In this embodiment, a plurality of the connecting pipe 8 is provided with a third branch pipe, and a plurality of the third branch pipe is internally provided with a second pressure sensor 81, and the second pressure sensor 81 is used for reading the pressure value in the connecting pipe 8.
In this embodiment, the electronic control high-pressure common rail system includes a common rail pipe 9 connected to the tail end of the connecting pipe 8, a plurality of branch ports arranged below the common rail pipe 9, a drainage pipe 7 having one end connected to the branch ports, and an oil injector connected to the other end of the drainage pipe 7, wherein sealing detection assemblies 10 are arranged at the joints of the connecting pipe 8 and the common rail pipe 9, the joints of the branch ports and the drainage pipe 7, and the joints of the drainage pipe 7 and the oil injector, and the sealing detection assemblies 10 are connected to different joints in the system in a matching manner to detect the sealing performance of the interfaces.
As shown in fig. 4 to 6, in this embodiment, the sealing detection assembly 10 includes a sealing pipe 101 connected to the connection portion in a matching manner, the sealing pipe 101 covers the joint portion of the connection portion with an upper connection member and a lower connection member, openings at two ends of the sealing pipe 101 are respectively connected to outer sides of the upper portion and the lower portion of the connection portion in a matching manner, and a caliber of a middle portion of the sealing pipe is larger than a caliber of an outer side surface of the connection portion, a cavity is formed between the upper portion and the lower portion, the cavity can accommodate gas leaking from the connection portion, whether leakage occurs or not is determined according to a magnitude of a pressure value in the cavity, annular slots are respectively formed at two ends of the cavity, an elastic sealing ring 103 is connected to the annular slots in a matching manner, the elastic sealing ring 103 is limited along an axial direction thereof, and has elasticity, and can expand to further, the cavity is provided with a through hole above, the pressure gauge 102 is inserted in the through hole in a sealing mode, an elastic material is arranged outside a plug of the pressure gauge 102, sealing can be formed after the elastic material is inserted into the through hole, measuring accuracy is guaranteed, and whether gas leakage exists or not at the position is judged by reading the numerical value of the pressure gauge 102.
As shown in fig. 7, in this embodiment, a first electromagnetic valve 31, a pneumatic two-way piece 32, and a second electromagnetic valve 33 are sequentially disposed on the pressure-stabilizing pipe 3 from an air inlet connected to the high-pressure air source assembly 1, the pneumatic two-way piece 32 is a pneumatic element composed of an air filter and a pressure reducing valve, and realizes pressure stabilization adjustment of air pressure while realizing filtration and purification of the inflow air, and the first electromagnetic valve 31 and the second electromagnetic valve 33 play a role in regulating and controlling the air flow inside the pipe.
In this embodiment, a gear pump 41 and a third electromagnetic valve 42 are sequentially disposed on the filtering pipeline 4 from an oil inlet connected to the oil pump assembly 2, and the gear pump 41 pressurizes and discharges diesel oil flowing out of the oil pump assembly 2.
In this embodiment, the built-in atmospheric pressure control module of high-pressure air supply subassembly 1 can change the pressure value size of high-pressure draught, constantly adjusts the pressure value size of input air current, and observation system's leakproofness is good bad for testing result is safe and reliable more.
In this embodiment, the control device further comprises a control component, the control component comprises a microprocessor 111 and an indication unit 113, the microprocessor 111 is internally provided with a timing unit 112, the signal input end of the microprocessor 111 is respectively connected to the first pressure sensor 61, the second pressure sensor 81 and the pressure gauge 102, and the signal output end of the microprocessor is connected to the first electromagnetic valve 31, the second electromagnetic valve 33, the third electromagnetic valve 42, the gear pump 41 and the indication unit 113, and the control component makes a judgment according to the signal transmitted by the pressure sensors and feeds back the judgment to each electromagnetic valve, the gear pump 41 and the like to control the working state of the control component.
By the mode, when the detection device is started, the microprocessor controls the third electromagnetic valve and the gear pump to work, so that the oil pump assembly injects diesel oil into the mixing pipeline, and after the timing unit times the preset time, the third electromagnetic valve and the gear pump are closed; then the microprocessor controls the first electromagnetic valve and the second electromagnetic valve to work, and the first electromagnetic valve and the second electromagnetic valve are closed after the timing unit times to a preset time; after the timing unit times to a preset time, the first pressure sensor and the second pressure sensor respectively input detected data values to the microprocessor, the microprocessor calculates pressure drop difference values in each system, and if the pressure drop difference values are higher than the preset values, the indication unit is controlled to give an alarm; after the timing unit times the preset time, each pressure gauge inputs the detected data value to the microprocessor, and the microprocessor judges whether leakage occurs at the corresponding connection part according to each data value.
The above description is only for the purpose of illustrating the technical solutions of the present invention and is not intended to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; all the equivalent structures or equivalent processes performed by using the contents of the specification and the drawings of the invention, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The device for detecting the sealing performance of the electric control high-pressure common rail system is characterized by comprising a high-pressure air source component (1), a pressure stabilizing pipeline (3) connected with the high-pressure air source component (1), an oil pump component (2), a filtering pipeline (4) connected with the oil pump component (2), a mixing pipeline (6) respectively connected with the pressure stabilizing pipeline (3) and the filtering pipeline (4) at the same time, a plurality of connecting pipelines (8) respectively inserted at the tail end of the mixing pipeline (6), and a plurality of electric control high-pressure common rail systems respectively connected with the connecting pipelines (8), the device is characterized in that pressure sensors are arranged on the mixing pipeline (6) and the connecting pipeline (8), and a plurality of sealing detection assemblies (10) are arranged at the joints of the electric control high-pressure common rail system and used for detecting the sealing property of each pipeline joint of the electric control high-pressure common rail system.
2. The device for detecting the tightness of the electrically controlled high pressure common rail system according to claim 1, wherein the tail end of the pressure stabilizing pipe (3) and the tail end of the filtering pipe (4) are connected with the mixing pipe (6) through a tee pipe (5), the mixing pipe (6) is provided with a first branch pipe, and a first pressure sensor (61) is arranged in the first branch pipe; and the tail end of the mixing pipeline (6) is provided with a plurality of second branch pipes connected with the electric control high-pressure common rail system.
3. The device for detecting the tightness of the electrically controlled high-pressure common rail system according to claim 2, wherein the second branch pipes are connected with the connecting pipes (8) through matched interface components, each interface component is a sealed plug-in interface and comprises a male head (62) connected with the second branch pipe and a female seat (82) connected with the connecting pipe (8).
4. The device for detecting the tightness of the electrically controlled high pressure common rail system according to claim 3, wherein a plurality of the connecting pipes (8) are provided with third branch pipes, and a plurality of the third branch pipes are provided with second pressure sensors (81).
5. The device for detecting the sealing performance of the electric control high-pressure common rail system according to claim 4, wherein the electric control high-pressure common rail system comprises a common rail pipeline (9) connected to the tail end of the connecting pipeline (8), a plurality of branch ports arranged below the common rail pipeline (9), a drainage pipeline (7) with one end connected with the branch ports, and an oil injector connected with the other end of the drainage pipeline (7), and sealing detection assemblies (10) are arranged at the joint of the connecting pipeline (8) and the common rail pipeline (9), the joint of the branch ports and the drainage pipeline (7), and the joint of the drainage pipeline (7) and the oil injector.
6. The device for detecting the sealing performance of the electric control high-pressure common rail system according to claim 5, wherein the sealing detection assembly (10) comprises a sealing pipeline (101) connected to the joint in a matching manner, openings at two ends of the sealing pipeline (101) are respectively connected with the outer sides of the upper part and the lower part of the joint in a matching manner, the caliber of the middle part of the sealing pipeline is larger than the caliber of the outer side surface of the joint, a cavity is formed between the sealing pipeline and the outer side surface of the joint, annular slotted holes are respectively formed at two ends of the cavity, an elastic sealing ring (103) is connected to the annular slotted holes in a matching manner to seal the cavity, a through hole is formed above the cavity, and a pressure gauge (102) is inserted into.
7. The device for detecting the tightness of the electronic control high-pressure common rail system according to claim 1, wherein a first electromagnetic valve (31), a pneumatic linkage (32) and a second electromagnetic valve (33) are arranged on the pressure stabilizing pipeline (3) in sequence from an air inlet connected with the high-pressure air source assembly (1).
8. The device for detecting the tightness of the electric control high-pressure common rail system according to claim 1, wherein a gear pump (41) and a third electromagnetic valve (42) are arranged on the filter pipeline (4) in sequence from an oil inlet connected with the oil pump assembly (2).
9. The device for detecting the tightness of the electronic control high-pressure common rail system according to claim 1, wherein a pneumatic control module is arranged in the high-pressure air source assembly (1) to change the magnitude of the pressure value of the high-pressure air flow.
10. The device for detecting the tightness of the electric control high-pressure common rail system according to claim 1, further comprising a control assembly, wherein the control assembly comprises a microprocessor (111) and an indication unit (113), the microprocessor (111) is internally provided with a timing unit (112), signal input ends of the microprocessor (111) are respectively connected to the first pressure sensor (61), the second pressure sensor (81) and the pressure gauge (102), and signal output ends of the microprocessor are connected to the first solenoid valve (31), the second solenoid valve (33), the third solenoid valve (42), the gear pump (41) and the indication unit (113).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110134497.6A CN112709655B (en) | 2021-01-29 | 2021-01-29 | Tightness detection device for electric control high-pressure common rail system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110134497.6A CN112709655B (en) | 2021-01-29 | 2021-01-29 | Tightness detection device for electric control high-pressure common rail system |
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| CN112709655A true CN112709655A (en) | 2021-04-27 |
| CN112709655B CN112709655B (en) | 2023-09-22 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922394A (en) * | 2010-09-02 | 2010-12-22 | 北京博润宏达科技发展有限公司 | High-pressure common rail detection system |
| CN201802535U (en) * | 2010-08-12 | 2011-04-20 | 深圳市元征软件开发有限公司 | Common-rail injector detection system of diesel car |
| CN106089533A (en) * | 2016-08-15 | 2016-11-09 | 潍柴西港新能源动力有限公司 | A kind of fuel gas injection valve cleans and gas leakage detection equipment and detection method |
| KR101712875B1 (en) * | 2016-08-18 | 2017-03-07 | (주) 대진유압기계 | Apparatus for testing airtightness of gas injection valve for gas engine |
| DE102016205481A1 (en) * | 2016-04-04 | 2017-10-05 | Bayerische Motoren Werke Aktiengesellschaft | Method for leak testing a high-pressure fuel injection device |
| CN107387285A (en) * | 2017-09-04 | 2017-11-24 | 河南柴油机重工有限责任公司 | A kind of electronic control system device for detecting sealability |
| CN109026484A (en) * | 2018-07-13 | 2018-12-18 | 天津理工大学 | The control system of automotive air induction duct formula fuel injector on-line checking platform |
| CN111927667A (en) * | 2020-09-07 | 2020-11-13 | 思达耐精密机电（常熟）有限公司 | High-pressure common rail pump high-pressure leakage test system and application |
| CN214660578U (en) * | 2021-01-29 | 2021-11-09 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
-
2021
- 2021-01-29 CN CN202110134497.6A patent/CN112709655B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201802535U (en) * | 2010-08-12 | 2011-04-20 | 深圳市元征软件开发有限公司 | Common-rail injector detection system of diesel car |
| CN101922394A (en) * | 2010-09-02 | 2010-12-22 | 北京博润宏达科技发展有限公司 | High-pressure common rail detection system |
| DE102016205481A1 (en) * | 2016-04-04 | 2017-10-05 | Bayerische Motoren Werke Aktiengesellschaft | Method for leak testing a high-pressure fuel injection device |
| CN106089533A (en) * | 2016-08-15 | 2016-11-09 | 潍柴西港新能源动力有限公司 | A kind of fuel gas injection valve cleans and gas leakage detection equipment and detection method |
| KR101712875B1 (en) * | 2016-08-18 | 2017-03-07 | (주) 대진유압기계 | Apparatus for testing airtightness of gas injection valve for gas engine |
| CN107387285A (en) * | 2017-09-04 | 2017-11-24 | 河南柴油机重工有限责任公司 | A kind of electronic control system device for detecting sealability |
| CN109026484A (en) * | 2018-07-13 | 2018-12-18 | 天津理工大学 | The control system of automotive air induction duct formula fuel injector on-line checking platform |
| CN111927667A (en) * | 2020-09-07 | 2020-11-13 | 思达耐精密机电（常熟）有限公司 | High-pressure common rail pump high-pressure leakage test system and application |
| CN214660578U (en) * | 2021-01-29 | 2021-11-09 | 湖北三宁化工股份有限公司 | Electric control high-pressure common rail system tightness detection device |
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| CN112709655B (en) | 2023-09-22 |
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