WO2011135883A1 - 流体制御弁装置 - Google Patents
流体制御弁装置 Download PDFInfo
- Publication number
- WO2011135883A1 WO2011135883A1 PCT/JP2011/052286 JP2011052286W WO2011135883A1 WO 2011135883 A1 WO2011135883 A1 WO 2011135883A1 JP 2011052286 W JP2011052286 W JP 2011052286W WO 2011135883 A1 WO2011135883 A1 WO 2011135883A1
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- WIPO (PCT)
- Prior art keywords
- fluid
- upstream
- valve
- control valve
- fluid control
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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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
- F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/01—Control of temperature without auxiliary power
- G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
- G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
- G05D23/022—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste the sensing element being placed within a regulating fluid flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
Definitions
- the present invention relates to a fluid control valve device suitable for use in, for example, a thermostat valve device that switches and controls a flow of cooling water in accordance with a cooling water temperature in a cooling device for an internal combustion engine for automobiles (hereinafter referred to as an automobile engine). .
- a water-cooled cooling device using a radiator is generally used to cool the engine.
- a thermostat valve device using a thermal expansion body is used to adjust the amount of cooling water circulated to the radiator side so that the temperature of the cooling water introduced into the engine can be controlled. .
- thermostat valve device As this kind of thermostat valve device, those having various structures are conventionally known. For example, the one shown in Patent Document 1 is known.
- the arrangement position of the device is such that in the engine cooling system, fluids such as a cooling water passage from the radiator, a bypass passage from the engine outlet, and a passage to the engine inlet are joined.
- the temperature detection at the thermostat temperature sensing part provided facing the fluid passage is uncertain due to the disturbance of the flow of cooling water caused by this and the non-uniformity of the cooling water temperature.
- a concavo-convex portion is formed on the wall surface provided with the thermostat temperature sensing portion in the middle of the fluid passage, and the fluid is swirled and disturbed in a contact manner so that the cooling water temperature is made uniform.
- the present invention has been made in view of such circumstances, and in a fluid passage system including a fluid control valve, pressure loss is reduced as much as possible, thereby minimizing the pressure for circulating a fluid, and an apparatus.
- An object of the present invention is to obtain a fluid control valve device capable of ensuring a necessary flow rate without increasing the size of the whole.
- a fluid control valve device in order to meet such an object, has a valve seat and a valve body in a valve housing on the upstream side of a valve portion capable of opening and closing a fluid passage.
- the upstream chamber formed is provided with an upstream pipe that is inclined to a predetermined angle with respect to the valve shaft and forms an upstream fluid passage
- a part of the wall surface of the upstream chamber Is provided integrally with a bulging portion that rectifies and guides the fluid flowing in from the upstream side pipe so as to smoothly flow toward the valve portion by protruding toward the chamber.
- the upstream chamber in the valve housing described above is formed as a roughly hemispherical dome-shaped volume space, and the fluid from the upstream pipe connected to the upstream chamber passes through the upstream chamber and the valve seat and valve as valve portions. It is configured to flow downstream through a passage with the body.
- the fluid control valve device according to the present invention (the invention according to claim 2) is characterized in that, in claim 1, the bulging portion is provided at a position facing the position where the upstream pipe faces.
- the fluid control valve device according to the present invention (the invention described in claim 3) is the fluid control valve device according to claim 1 or 2, wherein the bulging portion formed on the wall surface of the upstream chamber of the valve housing has an axis of the upstream pipe.
- the surface exposed on the wall surface in the vertical cross section is formed in a shape that is substantially arc-shaped.
- the fluid control valve device according to the present invention is the fluid control valve device according to any one of claims 1 to 3, wherein the bulging portion is formed on the wall surface of the upstream chamber in the valve housing, and the valve shaft. It is provided at any position in the circumferential direction except for an angular range in which an open end to which the upstream pipe is connected is located.
- the bulging portion is provided on the wall surface of the upstream chamber in the valve housing into which cooling water flows from the upstream pipe, and fluid such as cooling water is supplied to the valve portion. Since the rectification and guidance are performed, the pressure loss in the expanding passage can be reduced and the flow distribution around the valve can be made uniform despite the simple structure. Further, according to the present invention, there is an advantage that a guide plate is not provided as in the prior art, and it is not necessary to secure a space for the guide plate, and complicated shape processing is not required for a valve housing, a pipe and the like. .
- the flow of fluid flowing in the fluid passage is smoothly rectified and guided, and a slight change in the housing shape prevents an increase in pressure loss in the fluid passage.
- the water pressure required to circulate can be reduced, so that the required flow rate can be secured without increasing the size of the entire device, and as a result, the pressure loss in the entire system can be reduced.
- There are various excellent effects such as downsizing of the pumping means.
- the surface of the bulging portion is formed in an arc shape, the fluid flowing into the upstream chamber of the valve housing flows smoothly along the arc-shaped surface, and at the same time, the non-expanding A space in which the fluid can flow into the exit portion is secured and the fluid has a degree of freedom, so that the water flow resistance can be suppressed, thereby reducing the pressure loss.
- the passage of fluid flowing from the inflow portion of the upstream pipe to the valve portion through the bulging portion surface is smoothed. , The fluid can flow smoothly.
- the position on the wall surface of the upstream chamber in the valve housing and the bulging portion is a position that avoids the position corresponding to the open end to which the upstream pipe is connected, It can be used at any point, and has an excellent advantage that the degree of freedom in design is great and the effect is great. Further, since the restriction on the position of the bulging portion is small, the degree of freedom is large even when the upstream pipe is attached to the valve housing eccentrically on both the left and right sides of the valve shaft. There is also an advantage that it can be effective.
- FIG. 1 It is a schematic sectional drawing which shows one Embodiment of the thermostat valve apparatus as a fluid control valve apparatus which concerns on this invention. It is a schematic perspective view of the thermostat valve apparatus of FIG. It is a schematic perspective view which shows the valve housing in the thermostat valve apparatus of FIG. 1, FIG. (A), (b) is a schematic perspective view which shows the state which inclined the valve housing of FIG. 3 to the back side, after cross-sectioning along the IV-IV line in the figure. (A) is a schematic sectional drawing for demonstrating the flow of the fluid when a thermostat valve apparatus opens, (b) is a schematic sectional drawing for demonstrating the flow of the fluid by a conventional structure.
- (A), (b) is explanatory drawing for demonstrating the arrangement
- (A) is explanatory drawing for demonstrating the formation state of the bulging part which characterizes invention,
- (d) is A part detail drawing of (a), Comprising: The bulging part surface It is explanatory drawing for demonstrating the formation position.
- FIG. 1 and 4 show an embodiment of a fluid control valve device according to the present invention.
- a description will be given of a case where the invention is applied to a thermostat valve device for switching the flow path of cooling water in a cooling device for an internal combustion engine. .
- reference numeral 1 denotes a thermostat valve device that constitutes a cooling device for an automobile engine. Although not shown, this thermostat valve device 1 circulates engine cooling water between the engine and the radiator. When the cooling water temperature is high, the cooling water from the radiator is circulated to the engine inlet, and when the cooling water temperature is low, the cooling water from the engine outlet is The flow path is switched such as bypassing and refluxing.
- reference numeral 10 denotes a valve housing, and an upstream chamber 11 into which cooling water upstream from the radiator flows is formed, and a fluid passage can be opened and closed below the valve housing.
- a valve seat 13 is formed as the valve portion 12, and the valve body 14 moves forward and backward with respect to the valve seat 13 to open and close the valve.
- reference numeral 15 denotes a thermostat as a valve assembly that integrally holds a thermostat temperature sensing part, a piston for moving the valve body 14, a return spring, and the like, while holding the valve body 14 so as to be able to advance and retract.
- the valve body 14 According to the cooling water temperature in the downstream chamber, which is an assembly and the thermostat temperature sensing unit faces, the valve body 14 is operated in the valve opening direction by the piston when the cooling water temperature is high, and the valve is closed when the cooling water temperature is low. Operation control is performed.
- the operation of such a thermostat valve is well known, and a specific description thereof is omitted here.
- valve housing 10 a fluid passage to the engine inlet and a bypass passage from the engine outlet are provided below the valve housing 10. It goes without saying that the device housing to be connected is assembled and attached to a predetermined position such as an automobile engine.
- the upper portion of the valve housing 10 is formed to have a substantially hemispherical dome shape, and an upstream chamber 11 having substantially the same shape is formed therein.
- the upstream chamber 11 is integrally provided with an upstream pipe 17 that is inclined at a predetermined angle with respect to the valve shaft L that is the central axis of the valve portion 12.
- the upstream pipe 17 is connected to a radiator in the engine cooling system, and selectively supplies the cooling water cooled by the radiator to the engine inlet through the thermostat valve device.
- a portion in the circumferential direction of the wall surface of the upstream chamber 11 described above that is, a portion facing the open end 18 serving as an inlet to the upstream chamber 11 by connecting the upstream pipe 17 in this embodiment. Further, by projecting into the chamber 11, the fluid flowing from the upstream pipe 17 smoothly flows toward the fluid passage (gap passage) by the valve seat 13 and the valve body 14 in the valve portion 12. In this way, the bulging portion 20 that rectifies and guides is integrally provided.
- the bulging portion 20 bulges into a semi-cylindrical shape toward the inside of the upstream chamber 11 by making the cylindrical member into a shape that is pressed from the outside of the hemispherical dome.
- the bulging portion 20 formed on the wall surface of the upstream chamber 11 of the valve housing 10 is formed in such a shape that the surface exposed to the wall surface in a vertical section including the axis of the upstream pipe 17 has a substantially arc shape. Yes.
- reference numeral 21 indicates a case of a conventional dome shape in which the bulging portion 20 is not provided.
- 20 a is a dent corresponding to the bulging portion 20 in the valve housing 10.
- the bulging portion 20 is provided on the wall surface of the upstream chamber 11 in the valve housing 10 into which the cooling water flows from the upstream pipe 17, and fluid such as cooling water is supplied to the valve portion 12. Since the flow is rectified and guided toward the fluid passage (gap passage) between the valve seat 13 and the valve body 14, the fluid passage that expands and narrows in the device 1 despite the simple structure. The pressure loss inside can be reduced, and the pressure distribution around the valve portion can be made uniform. Further, according to the present invention, there is an advantage that a guide plate provided for guiding a conventional fluid, a space for installing the guide plate, and a complicated shape processing are unnecessary.
- the flow of the fluid flowing in the fluid passage can be rectified and guided as smoothly as possible.
- the pressure loss in the fluid passage can be reduced by a slight change in the shape of the valve housing 10, and the fluid pressure required to circulate the fluid can be reduced by the pressure loss.
- the required flow rate can be ensured without increasing the size of the system, and as a result, the pressure loss in the entire system can be reduced, so that there are various effects such as downsizing of the pumping means such as a pump. Is.
- the surface of the bulging portion 20 is formed in an arc shape, the fluid flowing into the upstream chamber 11 of the valve housing 10 smoothly flows along the arc-shaped surface, and at the same time The space where the fluid can flow into the non-bulged portion is secured, and the fluid has a freedom to go, so that the resistance to water flow is suppressed, thereby reducing the pressure loss.
- this embodiment demonstrated the case where it was the semicircular column-shaped bulging part 20, this invention is not limited to this. That is, when a partition plate is provided in the upstream chamber 11 or the wall surface in the upstream chamber is formed in a mortar shape, the fluid flow becomes complicated and pressure loss cannot be reduced.
- the inner wall surface of the upstream chamber 11 Appropriate shapes such as a bulging portion formed by forming a part of the flat shape along the inner surface of the upstream pipe, a bulging portion by an arc surface having an appropriate curvature, and a hemispherical bulging portion Needless to say, even if a bulging portion having a bulge is formed, the pressure loss can be reduced substantially equal to or greater than or equal to that of the above-described embodiment, and a desired operational effect can be exhibited. The present applicant has confirmed the operational effects of the bulging portions with these various shapes by experiments.
- FIGS. 6A and 6B are diagrams for explaining at which position in the circumferential direction the bulging portion 20 characterizing the present invention is provided in the upstream chamber 11 of the valve housing 10.
- the bulging portion 20 has an open end 18 connected to the upstream pipe 17 around the valve axis L on the wall surface of the upstream chamber 11 in the valve housing 10. It has been confirmed by experiments that it should be provided at any position in the circumferential direction excluding the positioned angular range ⁇ (the angular range indicated by ⁇ in the figure).
- the position where the bulging portion 20 is provided on the wall surface of the upstream chamber 11 in the valve housing 10 is any position that avoids the position corresponding to the open end 18 to which the upstream pipe 17 is connected. It is also possible to have a large degree of freedom in design and the effect is great. This is because, in FIG. 6B, the flowing fluid collides with the surface of the bulging portion 20 so that the fluid flows around, but the space can be secured and a smooth flow can be secured.
- the restriction on the position where the bulging portion 20 is provided is small.
- the degree of freedom is large and the effect can be exhibited.
- FIG. 7 illustrates the positional relationship between the arcuate surface of the bulging portion 20 and each portion. That is, as the arcuate surface of the bulging portion 20 on the wall surface of the upstream chamber 11, the bulging portion upper end 22 is formed by the valve shaft L that is the central axis of the valve portion 12 and the wall surface of the upstream chamber 11 in the valve housing 10. In this case, it is preferable to form the valve housing 10 close to the center of the valve housing 10 up to the intersection with the opening end 18 to which the upstream pipe 17 is connected.
- the position of the arcuate surface of the bulging portion 20 can smooth the expansion of the upstream pipe 17 to the diameter of the upstream pipe 17 and the opening diameter of the valve portion 12, but sacrifices the diameter of the inlet from the pipe 17. 7D, the arcuate surface of the bulging portion 20 interferes too much with the fluid flow.
- the arc-shaped surface does not affect the inflowing fluid. The fluid passage (gap passage) between the bodies 14 is not guided and a smooth flow cannot be obtained.
- FIGS. 7B, 7C, and 7D the most preferable shape is FIG. 7C, and the fluid inlet (upstream pipe 17 of the upstream pipe 17 is shown in FIG. 7B).
- the diameter of the open end 18) is not sacrificed, it is more effective than the case where the bulge amount is small and the diameter of the inlet is sacrificed as shown in FIG.
- the effects shown in FIGS. 7B and 7D can be expected to some extent by providing the semi-cylindrical bulged portion 20.
- the effect by the shape of (b), (c), (d) can be expected in the order of the most effective shape (c), (d), and (b).
- the present invention is not limited to the structure described in the above-described embodiment, and it goes without saying that the shape, structure, etc. of each part constituting the fluid control valve device such as the thermostat valve device 1 can be appropriately modified and changed. Nor.
- the present invention is not limited to the thermostat valve device 1 used in the cooling device for an internal combustion engine described in the above-described embodiment, and can be applied to any fluid control device that controls various fluids.
- valve device (fluid control valve device) DESCRIPTION OF SYMBOLS 10 Valve housing 11 Upstream chamber 12 Valve part 13 Valve seat 14 Valve body 15 Thermostat assembly (valve assembly) 17 Upstream pipe 18 Open end 20 Swelling part 22 Swelling part upper end L Valve shaft
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Abstract
Description
ここで、上述した弁ハウジング内の上流側室はほほ半球ドーム状の容積空間として形成され、これに接続される上流側パイプからの流体が該上流側室内を通り、バルブ部である弁座と弁体との通路を経て下流側に流れるように構成されている。
また、本発明によれば、従来流体を案内したりするために設けていた案内板、さらにその設置のためのスペースを不要とし、さらには複雑な形状加工が不要である等の利点がある。
すなわち、上流側室11に仕切り板を設けたり、上流側室内の壁面をすり鉢形状で形成したりした場合には、流体の流れが複雑となり、圧力損失を低減できないが、たとえば上流側室11の内壁面の一部を、上流側パイプの内面に沿った平面形状とすることで形成される膨出部、適宜の曲率を有する円弧面による膨出部、さらに半球状の膨出部など、適宜の形状をもつ膨出部を形成した場合であっても、上述した実施形態とほぼ同等あるいは同等以上の圧力損失の低減を図れ、所用の作用効果を発揮し得ることは言うまでもない。
本出願人は、これら種々の形状による膨出部の作用効果を、実験により確認している。
本出願人は種々の試行錯誤と実験により、膨出部20を、前記弁ハウジング10における上流側室11の壁面において、前記弁軸L周りで前記上流側パイプ17が接続されている開口端18が位置している角度範囲αを除いた周方向のいずれかの位置(図中βで示す角度範囲)に設けるとよいことを実験により確認している。
すなわち、上流側室11の壁面において膨出部20の円弧状表面としては、その膨出部上端22が、バルブ部12の中心軸である弁軸Lと、弁ハウジング10における上流側室11の壁面であって上流側パイプ17が接続されている開口端18との交わる位置まで、弁ハウジング10の中央部に寄せて形成するとよい。
10 弁ハウジング
11 上流側室
12 バルブ部
13 弁座
14 弁体
15 サーモスタットアセンブリ(バルブ組立体)
17 上流側パイプ
18 開口端
20 膨出部
22 膨出部上端
L 弁軸
Claims (4)
- 弁ハウジング内で弁座および弁体を有し流体通路を開閉可能なバルブ部の上流側に形成される上流側室に、弁軸に対して所定角度宛傾斜して上流側の流体通路を形成する上流側パイプが臨んで設けられてなる流体制御弁装置において、
前記上流側室の壁面の一部には、該室内に向かって突出させることにより、前記上流側パイプから流入する流体を前記バルブ部に向かって滑らかに流れるように整流して案内する膨出部が一体に設けられていることを特徴とする流体制御弁装置。 - 請求項1記載の流体制御弁装置において、
前記膨出部は、前記上流側パイプが臨む位置と対向する位置に設けられていることを特徴とする流体制御弁装置。 - 請求項1または請求項2記載の流体制御弁装置において、
前記弁ハウジングの上流側室の壁面に形成された膨出部は、前記上流側パイプの軸線を含む鉛直断面において壁面に露呈する表面がほぼ円弧状を呈するような形状で形成されていることを特徴とする流体制御弁装置。 - 請求項1ないし請求項3のいずれか1項に記載の流体制御弁装置において、
前記膨出部は、前記弁ハウジングにおける上流側室の壁面において、前記弁軸周りで前記上流側パイプが接続されている開口端が位置している角度範囲を除いた周方向のいずれかの位置に設けられていることを特徴とする流体制御弁装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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BR112012022772-6A BR112012022772B1 (pt) | 2010-04-27 | 2011-02-03 | conjunto de válvula de controle de fluído |
US13/581,468 US9464727B2 (en) | 2010-04-27 | 2011-02-03 | Fluid control valve assembly |
EP11774668.5A EP2565505B1 (en) | 2010-04-27 | 2011-02-03 | Fluid control valve assembly |
CN201180020987.8A CN102859243B (zh) | 2010-04-27 | 2011-02-03 | 流体控制阀装置 |
US15/241,400 US10364736B2 (en) | 2010-04-27 | 2016-08-19 | Fluid control valve assembly |
Applications Claiming Priority (2)
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JP2010-102556 | 2010-04-27 | ||
JP2010102556A JP5164281B2 (ja) | 2010-04-27 | 2010-04-27 | 流体制御弁装置 |
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Application Number | Title | Priority Date | Filing Date |
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US13/581,468 A-371-Of-International US9464727B2 (en) | 2010-04-27 | 2011-02-03 | Fluid control valve assembly |
US15/241,400 Continuation US10364736B2 (en) | 2010-04-27 | 2016-08-19 | Fluid control valve assembly |
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WO2011135883A1 true WO2011135883A1 (ja) | 2011-11-03 |
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US (2) | US9464727B2 (ja) |
EP (1) | EP2565505B1 (ja) |
JP (1) | JP5164281B2 (ja) |
CN (1) | CN102859243B (ja) |
BR (1) | BR112012022772B1 (ja) |
WO (1) | WO2011135883A1 (ja) |
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US20160208677A1 (en) * | 2013-08-28 | 2016-07-21 | Mahindra & Mahindra Limited | Thermostat housing for a thermostat of an engine cooling arrangement |
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TR201719196A2 (tr) * | 2017-11-30 | 2019-06-21 | Kirpart Otomotiv Parcalari Sanayi Ve Ticaret A S | Basinç düşümünü azaltan i̇yi̇leşti̇ri̇lmi̇ş akiş geometri̇si̇ne sahi̇p termostat yuvasi |
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Also Published As
Publication number | Publication date |
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CN102859243A (zh) | 2013-01-02 |
BR112012022772B1 (pt) | 2020-08-25 |
EP2565505B1 (en) | 2020-10-14 |
EP2565505A4 (en) | 2013-11-20 |
US20120319028A1 (en) | 2012-12-20 |
CN102859243B (zh) | 2016-04-27 |
JP2011231856A (ja) | 2011-11-17 |
EP2565505A1 (en) | 2013-03-06 |
JP5164281B2 (ja) | 2013-03-21 |
US9464727B2 (en) | 2016-10-11 |
US20160356203A1 (en) | 2016-12-08 |
US10364736B2 (en) | 2019-07-30 |
BR112012022772A2 (pt) | 2018-05-22 |
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