CN106678426B - Hydraulically actuated gas injection valve - Google Patents
Hydraulically actuated gas injection valve Download PDFInfo
- Publication number
- CN106678426B CN106678426B CN201710185269.5A CN201710185269A CN106678426B CN 106678426 B CN106678426 B CN 106678426B CN 201710185269 A CN201710185269 A CN 201710185269A CN 106678426 B CN106678426 B CN 106678426B
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- China
- Prior art keywords
- valve
- magnet
- sleeve
- magnetic field
- valve body
- 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.)
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- 238000002347 injection Methods 0.000 title claims abstract description 16
- 239000007924 injection Substances 0.000 title claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- CNQCVBJFEGMYDW-UHFFFAOYSA-N lawrencium atom Chemical compound [Lr] CNQCVBJFEGMYDW-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a hydraulically driven gas injection valve, comprising: the valve comprises a valve body, a valve sleeve is arranged in the valve body, and an electromagnetic valve communicated with an inner cavity of the valve body is arranged outside the valve body; the valve core, the valve stem of the said valve core cooperates with said valve cover slidably, the said valve stem has first projecting portion and second projecting portion which stretches out of the said valve cover; the first extension part of the valve rod is fixedly connected with a magnet through a magnet seat, a magnetic field sensor is fixed in the valve body and corresponds to the magnet in position, and a sliding guide device is arranged between the valve rod and the valve sleeve. The magnet is fixed with the valve core through the magnet seat and moves along with the valve core, and the magnetic field sensor senses the stroke of the valve core by detecting the change of a magnetic field, so that the opening degree of the valve core is accurately controlled. And the valve core can not rotate when moving axially through the sliding guide device, thereby eliminating detection errors brought to the magnetic field sensor by the magnetic difference existing along the circumferential direction of the magnet and improving the measurement precision.
Description
Technical Field
The invention relates to the technical field of gas injection valves, in particular to a hydraulically-driven gas injection valve.
Background
Gas injection valves are a key component of the gas injection system of internal combustion engines. Chinese utility model patents 201420616390.0, 201520085371.4, 201520673660.6 and 201620890128.4 each disclose a gas injection valve, which are useful in the aspects of injection accuracy, use reliability, and the like. However, the stroke of the valve element is not detected, so that the opening degree of the valve element cannot be accurately controlled.
Disclosure of Invention
In view of the above disadvantages of the prior art, the present invention provides a hydraulically driven gas injection valve, which accurately controls the opening degree of a valve element by detecting the stroke of the valve element.
In order to solve the technical problem, the technical scheme of the invention is as follows: a hydraulically actuated gas injection valve comprising: the valve comprises a valve body, a valve sleeve is arranged in the valve body, and an electromagnetic valve communicated with an inner cavity of the valve body is arranged outside the valve body; the valve rod of the valve core is in sliding fit with the valve sleeve, and the valve rod is provided with a first extending part and a second extending part which respectively extend from two ends of the valve sleeve; the first extension part of the valve rod is fixedly connected with a magnet through a magnet seat, a magnetic field sensor is fixed in the valve body, and the magnetic field sensor corresponds to the magnet in position.
Wherein the magnet is a magnet ring or a magnet block.
The magnet seat comprises a magnet seat body, the magnet seat body is connected with the first extending portion of the valve rod, and the magnet is fixed on the magnet seat body.
Wherein, be provided with the sliding guide device between valve rod and the valve barrel, the sliding guide device includes: a notch is formed in the outer circle of the valve rod, the notch is provided with a guide plane, and the guide plane is parallel to the axial extension direction of the valve rod; the valve sleeve is provided with a through hole, a rolling column is arranged in the through hole, and the rolling column is attached to a guide plane of the gap of the valve rod.
Wherein a plugging ring for sealing the through hole of the valve sleeve is arranged between the valve sleeve and the valve body, and rolling balls are arranged in the through holes of the valve sleeve and are respectively arranged at two ends of the rolling column.
And the second extending part of the valve rod is sleeved with a return spring, and the return spring is clamped and pressed between the sealing ring and the tail end of the second extending part of the valve rod.
Wherein, the valve body is provided with a set screw for limiting the rotation of the valve sleeve.
After the technical scheme is adopted, the technical effects obtained by the invention are as follows:
1) The magnet is fixed with the valve core through the magnet seat and moves along with the valve core, the magnetic field sensor is fixed in the valve body, and the magnetic field sensor detects the change of a magnetic field to sense the stroke of the valve core, so that the opening degree of the valve core is accurately controlled.
2) The sliding guide device is arranged between the valve rod and the valve sleeve, so that the valve core cannot rotate when moving axially, detection errors of the magnetic field sensor caused by magnetic differences of the magnet along the circumferential direction are eliminated, and the measurement precision is improved.
3) The sliding guide device is provided with the rolling column and the rolling ball, so that the friction caused by the movement of the valve core is completely converted into rolling friction, the axial movement of the valve core is flexible, and the valve core is prevented from being stuck.
4) The rotation of the valve sleeve is limited through the fastening screw, the relative position of the guide part between the valve sleeve and the valve core is ensured, and the use reliability is improved.
Drawings
FIG. 1 is a longitudinal cross-sectional view of an embodiment of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a schematic structural view of the valve cartridge of the embodiment of FIG. 1;
in the figure, 100-a valve body, 101-an electromagnetic valve, 102-a magnetic field sensor, 103-a valve core, 1031-a notch, 104-a valve sleeve, 105-a magnet, 106-a nut, 107-a magnet seat body, 108-a return spring, 109-a set screw, 110-a rolling column, 111-a sealing ring, 112-a rolling ball and 113-signal transmission lines.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, in a hydraulically driven gas injection valve, an electromagnetic valve 101 is installed outside a valve body 100, and hydraulic oil is controlled to enter and exit from an inner cavity of the valve body by on-off control of the electromagnetic valve 101, so that a valve core 103 moves, and the injection valve is opened or closed.
A valve sleeve 104 is provided in the valve body 100, and a set screw 109 is provided in the valve body 100 so as not to rotate the valve sleeve.
The valve spool 103 has a stem slidably engaged with the valve sleeve 104, the stem having a first projection and a second projection extending from both ends of the valve sleeve 104, respectively. The first extending part of the valve rod is fixedly connected with a magnet 105 through a magnet seat, a magnetic field sensor 102 is fixed in the valve body 100, the position of the magnetic field sensor 102 corresponds to the position of the magnet 105 and is used for detecting the change of a magnetic field, so that the stroke of the valve core 103 is sensed, and a signal transmission line 113 transmits a detection signal to an electric control system. The magnet 105 may be a magnet ring or may have another shape such as a magnet block. In the magnet holder, a magnet holder body 107 is screwed (may be connected by other means such as interference) to the first protruding portion of the valve stem, the magnet 105 is locked to the magnet holder body 107 by a nut 106, and the magnet 105 is only fixed by the nut 106, or may be fixed by adhesion or the like.
In reality, the magnet has magnetism difference along the circumferencial direction, if case 103 takes place to rotate at the removal in-process, then magnet 105 also can rotate, so, the difference of magnet itself will reflect in magnetic field sensor's detected signal to the stroke judgement for case 105 brings the error, and then influences measurement accuracy.
In order to eliminate the detection error of the magnetic field sensor due to the difference in magnetism of the magnets in the circumferential direction and improve the detection accuracy, in the present embodiment, a slide guide is provided between the valve stem and the valve housing 104. The slide guide device enables the valve core 103 not to rotate when moving, and specifically comprises the following structures:
as shown in fig. 2 and 3, a notch 1031 is formed in the outer circumference of the valve stem, and the notch 1031 has a guide plane parallel to the axial extension direction of the valve stem. Furthermore, the valve sleeve 104 is provided with a through hole, a rolling column 110 is arranged in the through hole, and the rolling column 110 is attached to the guide plane of the valve rod notch 1031. The rolling balls 112 are arranged in the through holes of the valve sleeve 104, and the rolling balls 112 are respectively arranged at two ends of the rolling column 110. A sealing ring 111 is provided between the valve sleeve 104 and the valve body 100 in order to seal the through-hole of the valve sleeve 104.
The slide guide is not limited to the above-described structure, and for example, a slide key connection of the valve stem and the valve sleeve 104 can also provide an effect of preventing the valve element 103 from rotating when moving, but the sliding friction between the moving pairs of the structure is large, and the resistance is large.
As shown in fig. 1, a return spring 108 is sleeved on the second extending portion of the valve stem of the valve core 103, the return spring 108 is clamped between the blocking ring 111 and the end of the second extending portion of the valve stem, and at this time, the blocking ring 111 also functions as a spring washer.
Claims (3)
1. A hydraulically actuated gas injection valve comprising:
the valve comprises a valve body, a valve sleeve is arranged in the valve body, and an electromagnetic valve communicated with an inner cavity of the valve body is arranged outside the valve body;
the valve comprises a valve core, a valve rod of the valve core is in sliding fit with a valve sleeve, and the valve rod is provided with a first extending part and a second extending part which respectively extend from two ends of the valve sleeve; it is characterized in that the preparation method is characterized in that,
a magnet is fixedly connected to the first extending part of the valve rod through a magnet seat, a magnetic field sensor is fixed in the valve body, and the position of the magnetic field sensor corresponds to that of the magnet;
the magnet is a magnet ring or a magnet block, the magnet seat comprises a magnet seat body, the magnet seat body is connected with the first extending part of the valve rod, and the magnet is fixed on the magnet seat body;
a sliding guide device is arranged between the valve rod and the valve sleeve, and the sliding guide device comprises: a notch is formed in the outer circle of the valve rod, the notch is provided with a guide plane, and the guide plane is parallel to the axial extension direction of the valve rod; the valve sleeve is provided with a through hole, a rolling column is arranged in the through hole, and the rolling column is attached to a guide plane of the gap of the valve rod; and a plugging ring for sealing the through hole of the valve sleeve is arranged between the valve sleeve and the valve body, rolling balls are arranged in the through hole of the valve sleeve, and the rolling balls are respectively arranged at two ends of the rolling column.
2. A hydraulically actuated gas injection valve as claimed in claim 1 wherein said second extension of said valve stem is sleeved with a return spring, said return spring being sandwiched between said blocking ring and the distal end of said second extension of said valve stem.
3. A hydraulically actuated gas injection valve as claimed in claim 1, wherein said valve body is provided with a set screw for limiting rotation of said valve sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185269.5A CN106678426B (en) | 2017-03-25 | 2017-03-25 | Hydraulically actuated gas injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710185269.5A CN106678426B (en) | 2017-03-25 | 2017-03-25 | Hydraulically actuated gas injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106678426A CN106678426A (en) | 2017-05-17 |
| CN106678426B true CN106678426B (en) | 2022-11-04 |
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ID=58829317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710185269.5A Active CN106678426B (en) | 2017-03-25 | 2017-03-25 | Hydraulically actuated gas injection valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106678426B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107740735B (en) * | 2017-10-26 | 2019-07-02 | 重庆红江机械有限责任公司 | A kind of electro-hydraulic linkage gas valve |
| CN113932040B (en) * | 2021-10-16 | 2024-04-12 | 涌镇液压机械（上海）有限公司 | Proportional valve for controlling opening and closing of injection molding machine |
| CN113944574B (en) * | 2021-11-02 | 2024-02-02 | 上海中船三井造船柴油机有限公司 | Gas injection valve of marine diesel engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK176152B1 (en) * | 2000-07-10 | 2006-10-16 | Man B & W Diesel As | Method of activating an exhaust valve for an internal combustion engine and such an exhaust valve |
| CN100410573C (en) * | 2004-04-01 | 2008-08-13 | 株式会社小松制作所 | Valve device |
| DE102007045194B3 (en) * | 2007-09-21 | 2009-02-19 | Mtu Friedrichshafen Gmbh | Method for controlling an internal combustion engine |
| US8191531B2 (en) * | 2010-01-26 | 2012-06-05 | GM Global Technology Operations LLC | Method for controlling an engine valve of an internal combustion engine |
| CN203098882U (en) * | 2013-02-06 | 2013-07-31 | 张凡 | Diaphragm pilot valve with non-contact type valve element linear displacement detection device |
| CN106090265B (en) * | 2016-08-15 | 2018-06-01 | 潍坊力创电子科技有限公司 | Buffer type gas injection valve |
| CN206572044U (en) * | 2017-03-25 | 2017-10-20 | 潍坊力创电子科技有限公司 | The gas spray valve of hydraulic-driven |
-
2017
- 2017-03-25 CN CN201710185269.5A patent/CN106678426B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106678426A (en) | 2017-05-17 |
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