EP2898388A1 - Dispositif régulateur de pression pour dispositifs de combustible dans des moteurs à combustion interne, en particulier pour le domaine automobile - Google Patents
Dispositif régulateur de pression pour dispositifs de combustible dans des moteurs à combustion interne, en particulier pour le domaine automobileInfo
- Publication number
- EP2898388A1 EP2898388A1 EP13801754.6A EP13801754A EP2898388A1 EP 2898388 A1 EP2898388 A1 EP 2898388A1 EP 13801754 A EP13801754 A EP 13801754A EP 2898388 A1 EP2898388 A1 EP 2898388A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- gas
- stage
- chamber
- outlet
- 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.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 239000000446 fuel Substances 0.000 title description 3
- 239000007789 gas Substances 0.000 claims abstract description 56
- 239000012528 membrane Substances 0.000 claims abstract description 49
- 230000033228 biological regulation Effects 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 15
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 11
- 239000002737 fuel gas Substances 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims abstract 2
- 241001125929 Trisopterus luscus Species 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000004044 response Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
- G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
-
- 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
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/0402—Control of fluid pressure without auxiliary power with two or more controllers mounted in series
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0633—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane characterised by the properties of the membrane
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2093—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2093—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power
- G05D16/2095—Control of fluid pressure characterised by the use of electric means with combination of electric and non-electric auxiliary power using membranes within the main valve
Definitions
- the present invention relates to a pressure regulator device for fuel gas (for instance, methane) plants in internal combustion engines, particularly for the automotive field, having the features set out in the preamble of main claim 1.
- fuel gas for instance, methane
- Plants of this type are generally formed by a high-pressure gas tank, a pressure reducer/regulator which brings the gas to the appropriate pressure for supply to the engine, and a series of ducts and relative accessories to facilitate charging of the tank and to ensure the optimum operation of the plant as a whole.
- the pressure regulator is a key component of a plant for engines supplied with fuel gases.
- the pressure regulator has to ensure that the fuel gas is supplied in the required quantity and at the required pressure. It must in particular keep the output pressure constant:
- the pressure regulator must also ensure that the supply is sensitive to and responds swiftly to the engine requirements.
- the sensitivity and precision of a pressure regulator are essential for the correct operation of the supply plant of an injection engine, as the fuel must be accurately metered to the engine.
- Pressure regulators with a resilient membrane having a one-stage, two- stage or three-stage pressure reduction are known. These regulators comprise a first stage which comprises a first chamber communicating with the fuel tank by means of a first valve, part of the inner surface of the first chamber being formed by a first resilient membrane. Like the first stage, the subsequent stages also comprise a chamber, part of whose inner surface is formed by a resilient membrane.
- the resilient membrane is affected by temperature variations and temperature increases cause reductions of the output pressure
- the membrane deteriorates over time, losing its properties of strength and resilience that initially ensure correct pressure regulation.
- Pressure variations due to temperature variations have in particular been resolved either by correcting injection times through control by the electronic control unit, or by reducing the temperature variation range by using a thermostat, or by using different regulation technologies, for instance the piston technology in which the function of the membrane is replaced by a moving piston of metal material.
- piston pressure regulators do, as mentioned above, resolve some of the typical problems of conventional membrane regulators, but have worse performance characteristics in other respects. Response times to engine requirements are in particular longer with a worse dynamic response and higher instantaneous fluctuations which are not absorbed by the membrane.
- the economic aspect is just as significant as a piston regulator costs more and requires more complex production technologies.
- the object of the present invention is to provide a pressure regulator able to resolve the above-mentioned problems without giving up the advantages of the membrane technology and the simplicity in terms of components and installation of conventional regulators, thereby also ensuring that costs are kept down.
- Fig. 1 shows an overall diagram of the pressure regulator device of the invention
- Fig. 2 is a view, on an enlarged scale and partly in cross-section, of a detail of the diagram of Fig. 1.
- a pressure regulator device for automotive plants with an engine supplied by a fuel gas embodied in accordance with the invention, is shown overall by 10.
- the device is intended to be placed between a tank for the gas (for instance methane) at high pressure and the engine, neither of which are shown.
- the device comprises a first pressure reduction stage 1 in fluid communication via a line 3 with the tank of pressurised fuel gas; in the tank, the gas is at the pressure Pin.
- Inlet and outlet openings in the first stage 1 are shown by la and lb respectively.
- the device Downstream of the first stage 1, the device comprises a second pressure regulation stage 2 with respective inlet and outlet openings 2a, 2b.
- the inlet opening 2a is in fluid communication with the outlet lb of the first reduction stage and the outlet 2b is in fluid communication with the user device, i.e. with a delivery line 4.
- the two regulation stages 1, 2 may be housed in the same body or as an alternative in two separate bodies of the device.
- a valve seat 5 is provided with a respective shutter 6 slidably guided to and from the seat.
- This shutter may for instance slide along or parallel to the main axis of the first regulation stage 1.
- the shutter member 6 is operatively connected to a resilient pressure-regulating membrane 7, housed in a respective seat (shown diagrammatically and bearing the reference numeral lc) in the body of the first reduction stage 1.
- the regulation membrane 7 may also move along or parallel to the main axis of the first regulation stage 1.
- the shutter member 6 and the regulation membrane 7 are in particular coaxial with one another.
- the shutter member 6 and the regulation membrane 7 are mechanically connected by a connection pin or rod 8.
- the regulation membrane 7 divides the inner volume of the first stage 1 into a front chamber 11 and a rear chamber 12, the inlet and outlet openings la, lb being provided in the front chamber.
- An opposing spring 13, designed to urge the membrane 7 in the direction of the shutter member 6, is housed in the rear chamber 12.
- the opposing spring 13 is calibrated as a function of the desired output pressure of the first stage (for instance 4 bar in a preferred embodiment).
- the front chamber 11 is also the "compensation chamber” as it is the chamber in which the gas acts on the membrane 7 so that the latter is in equilibrium with the opposing spring 13 at the desired output pressure of the gas (shown by Pout).
- This front chamber 11 communicates, via the outlet lb, with an outlet duct 14 for the gas from the first stage 1.
- the output pressure of the gas from the first stage 1 is the regulated pressure PI of the gas in the chamber 11, for instance 4 bar.
- the rear chamber 12 is separated from the front chamber 11 by means of the resilient membrane 7 which also ensures leak-tightness between the two chambers 11, 12.
- the rear chamber 12 may be in fluid communication with atmosphere, and as a result the air that it contains is at atmospheric pressure, or may be in fluid communication with the engine intake manifold (not shown), and as a result the air that it contains is at the pressure of said intake manifold.
- the second regulation stage 2 is also provided in a body 2c (shown only diagrammatically), whose inner volume is divided by a resilient membrane 15 which defines a first (front) chamber 16 and a second (rear) chamber 17.
- the inlet and outlet openings 2a, 2b are provided in the first chamber 16.
- the inlet 2a of the second regulation stage 2 is in direct fluid communication with the outlet lb of the first stage 1 and with the chamber 16 of the second stage 2, without the interposition of interception members.
- the regulation membrane 15 is operatively connected to a shutter member 18 designed to intercept the outlet opening 2b of the second regulation stage 2.
- a seat 19 engaged by the shutter 18 is provided at the outlet 2b, the shutter being slidably guided to and from the seat.
- This shutter member 18 may for instance slide along or parallel to the main axis of the second regulation stage 2.
- the regulation membrane 15 may move along or parallel to the main axis of the body of the second regulation stage 2 and is connected to the shutter member 18 such that its movement towards the shutter member causes the latter to be urged against its own seat 19 and therefore to close the outlet passage 2b.
- the second chamber 17 houses an opposing spring 20 which tends to urge the membrane 15 into the forward position, i.e. towards the shutter member 18.
- This opposing spring 13 is calibrated as a function of the pressure difference desired to enable the opening of the valve seat 19 connected to the membrane 15.
- the first front chamber 17 is also the "compensation chamber” as it is the chamber in which the gas acts on the membrane 15 so that the latter is in equilibrium with the opposing spring 13 and with the pressure in the second chamber, shown by P3, at the desired output pressure of the gas Pout.
- the device 10 comprises a secondary circuit (servo-assisting the main circuit of the regulation stages) connected in parallel to the second regulation stage 2, as will be described in further detail below.
- the secondary circuit in particular comprises an auxiliary duct 21 for connecting, with fluid communication, the rear second chamber 17 of the second stage 2 with the line 4 for sending the gas to the engine, and a valve unit disposed on the duct 21.
- the valve unit comprises a valve seat 22 with a respective shutter 23 and an electromagnetic actuator 24 associated with the shutter for controlling the latter relative to the valve seat 22.
- the electromagnetic actuator 24 is structured such that it has an inlet passage 25 communicating with the rear second chamber 17 by means of a duct section 21, and an outlet passage 26 communicating with the duct of the line 4 for sending the gas to the injector units (not shown) of the engine via the other auxiliary duct section 21.
- the inlet passage 25 communicates with a chamber 27 disposed at the rear of the shutter member 23 of the electromagnetic actuator.
- the shutter is associated with the seat 22 in order to act on and close it.
- the shutter member 23 is also associated with an opposing spring 28 normally tending to urge the shutter member into the position closing the seat.
- Such a configuration provides an electrovalve associated with the shutter member 23 such that when the electromagnet (of the electromagnetic actuator) is not excited, the opposing spring 28 maintains the shutter member 23 in the closed position, thereby intercepting the flow of fluid from the second chamber 17.
- the valve seat 22 may be opened solely by supplying the electromagnet. This causes a displacement of the shutter member 23 and thus the opening of the seat 22. When the seat 22 is opened, the fluid flows into the duct 4.
- the actuator 24 is controlled by an electronic control unit 30 which, as a function of the pressure value at the outlet from the device, controls the opening of the shutter member 23 in order to regulate the gas pressure in the second chamber 17 of the second stage 2, so as to keep the pressure value at the outlet of the device stable.
- the control unit is designed to send the actuation control to the electrovalve 22-24, which control is actuated as a function of the analysis or the comparison of the pressure value Pout detected downstream of the device, for instance by a pressure transducer positioned in the injector unit, and the desired output pressure value (a preferred value is, for instance, equivalent to 2 bar).
- the pressure transducer detects the pressure and supplies a signal representative of the pressure detected to the control unit.
- the second chamber 17 of the second stage 2 is also in fluid communication with the corresponding first chamber 16 via a through hole 31 (which passes, for instance, through the membrane 15).
- the hole 31 is selected to have a cross- section whose amplitude is lower than the minimum passage section in the secondary circuit in order to ensure that the system functions correctly, as will be described in greater detail below.
- the valve seat 5 of the inlet passage la is closed as the membrane 7 is kept in its position of equilibrium by the pressure PI in the chamber 11 which is, in these circumstances, the set regulation pressure of the first stage 1 (for instance 4 bar).
- the pressure in these chambers is the same, i.e. PI.
- the valve seat 19 is closed as the force of the opposing spring 20 acts on the membrane 15 which is in turn mechanically connected to the shutter member 18.
- the valve seat 22 is kept closed as the shutter member 23 is urged into the forward position (with respect to the seat) by the opposing spring 28 and the electrovalve 22-24 is not excited.
- the electrovalve 22-24 when the system is actuated, the electrovalve 22-24 is excited and thus enables the opening of the shutter member 23 of the actuator 24, the opening of the duct enables the passage of the gas from the chamber 17 for use, and therefore the pressure of the gas P3 in the chamber 17 drops.
- the area of the passage hole 31 between the two chambers 16, 17 is smaller than the minimum passage area in the secondary circuit, making it possible to create a pressure differential between the chambers 16, 17, in favour of the latter, the differential being such as to enable the seat 19 to be opened by supplying gas from the second stage 2.
- This pressure in practice moves the membrane 15 towards the retracted position until reaching an equilibrium with the force of the spring 20 and a pressure in the (rear) second chamber 17 appropriately regulated to supply the desired pressure as output. In this condition of equilibrium, the membrane 15 is in an intermediate position; as a result the shutter member 18 also moves towards the retracted position with respect to its seat 19, opening the seat.
- the gas flows through the duct 4 at the regulated pressure P2 (2 bar) to the injector unit.
- the equilibrium between the forces at play on the membrane 15 guarantees the desired pressure P2 as output.
- the force acting to the rear of the membrane 15 i.e. on the surface of the membrane facing the chamber 17
- This pressure P3 is controlled by the actuator 24 which is in turn controlled by the control unit as a function of the pressure signal Pout; this pressure P3 is varied in order to keep the output pressure at the desired value.
- This kinematic arrangement of the moving members makes it possible to locate the correct relative positioning between the shutter member 18 and the relative sealing valve seat 19, thus ensuring the flow of gas at constant pressure needed to supply the engine throughout its operating range.
- a drop in the pressure Pout, to 1.5 bar, with respect to the desired value of 2 bar is read by the electronic control unit which controls the actuator 24 by prolonging the opening of the shutter member 23 in order to lower the pressure P3 which entails a larger opening of the passage through the seat 19 in order to increase the pressure Pout and keep it at the desired value of 2 bar.
- the control and compensation of the pressure are therefore carried out directly on the basis of the pressure signal Pout alone; this means that if, for any of the reasons listed above (ageing of the membrane, temperature increase, etc.) the pressure Pout were to vary, i.e. to rise or to drop, it is immediately compensated, providing optimum stability of the regulation system in all working conditions.
- the membrane of the second stage is urged against the resilient means 20, following a pressure drop in the second chamber 17, and the shutter member 18 therefore opens the passage at the outlet 2b.
- the device is thus able to keep the desired output gas pressure, for instance 2 bar, stable.
- the electronic control unit processes, in addition to the pressure signal Pout, other characteristic data, such as one or more of the following parameters: speed of rotation of the engine, opening times of the gas injectors provided in the engine, combustion air flow, engine torque requirement.
- a control may be supplied to the actuator 24 in order to vary the pressure Pout to another desired value, for instance 3 bar, and keep it stable.
- This second desired value may have the value of the pressure PI regulated by the first stage as a maximum value.
- control unit 30 may advantageously be provided with means for controlling the actuator 24 in order to vary the outlet pressure from the device 10 to a preselected number of desired values, i.e. according to a predefined function or curve.
- the actuator 24 is controlled by means of a variable electric current adjusted by electronic control.
- the pressure output from the device may for instance be proportional to the mean current.
- the invention therefore achieves the objects as defined and provides the advantages discussed above with respect to known solutions.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Driven Valves (AREA)
- Control Of Fluid Pressure (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
L'invention porte sur un dispositif régulateur de pression (10) pour des dispositifs à gaz combustible dans des moteurs à combustion interne, en particulier dans le domaine automobile, le dispositif étant interposé entre un réservoir pour le gaz à haute pression et une conduite (4) servant à envoyer le gaz au moteur. Le dispositif comprend au moins un premier étage (1) pour la réduction de pression de gaz, qui présente des ouvertures d'entrée (1a) et de sortie (1b) de gaz respectives, l'ouverture d'entrée (1a) étant en communication fluidique avec le réservoir de gaz, la pression du gaz réglée par le premier étage (2) étant une valeur intermédiaire entre la pression de gaz en amont et en aval du dispositif, au moins un second étage (2) pour la régulation de pression de gaz, du type comprenant une membrane élastique régulatrice (15) placée en aval du premier étage (1), la membrane formant la séparation entre des première et seconde chambres (16, 17) du second étage (2), le gaz réglé étant introduit à une pression intermédiaire dans la première chambre (16) et le gaz étant débité de la première chambre (16) à la pression présélectionnée pour l'envoi au moteur. Le second étage (2) porte des ouvertures d'entrée (2a) et de sortie (2b) de gaz respectives, l'ouverture de sortie (2b) du second étage (2) étant en communication fluidique avec la conduite (4) pour envoyer le gaz au moteur. Le dispositif comprend en outre un circuit secondaire associé au dispositif et relié en parallèle au second étage de régulation de pression (2), le circuit comprenant un conduit auxiliaire (21) conçu pour raccorder, en communication fluidique, la seconde chambre (17) du second étage (2) à la conduite (4) pour envoyer un gaz au moteur, une unité de soupape comprenant un siège de soupape (22) muni d'un élément d'obturateur respectif (23) et d'un actionneur électromagnétique (24) et étant reliée de façon fonctionnelle à l'élément d'obturateur (23) pour commander ce dernier par rapport au siège de soupape (22), l'actionneur (24) étant commandé par une unité de commande électronique (30) qui, en fonction de la valeur de pression à la sortie du dispositif (10), commande l'ouverture de l'élément d'obturateur (23) de façon à régler la pression de gaz dans la première chambre (16) du second étage (2) de façon à maintenir stable la valeur de pression à la sortie du dispositif.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000274A ITPD20120274A1 (it) | 2012-09-20 | 2012-09-20 | Dispositivo regolatore di pressione per impianti a gas combustibile in motori endotermici, particolarmente per autotrazione |
PCT/IB2013/058665 WO2014045218A1 (fr) | 2012-09-20 | 2013-09-19 | Dispositif régulateur de pression pour dispositifs de combustible dans des moteurs à combustion interne, en particulier pour le domaine automobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2898388A1 true EP2898388A1 (fr) | 2015-07-29 |
Family
ID=47226290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13801754.6A Withdrawn EP2898388A1 (fr) | 2012-09-20 | 2013-09-19 | Dispositif régulateur de pression pour dispositifs de combustible dans des moteurs à combustion interne, en particulier pour le domaine automobile |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2898388A1 (fr) |
CN (1) | CN104685437B (fr) |
IT (1) | ITPD20120274A1 (fr) |
RU (1) | RU2659119C2 (fr) |
WO (1) | WO2014045218A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITUA20161689A1 (it) * | 2016-03-15 | 2017-09-15 | Madas Srl | Freno idraulico |
DE102018200247A1 (de) * | 2018-01-10 | 2019-07-11 | Robert Bosch Gmbh | Ventilanordnung zur Gasdruckregelung, Kraftstoffsystem mit Ventilanordnung zur Gasdruckregelung |
CN112539870A (zh) * | 2019-09-23 | 2021-03-23 | 克莱斯工业公司 | 气体供应调控器 |
CN112965537B (zh) * | 2021-01-29 | 2024-04-09 | 中汽创智科技有限公司 | 控制装置及系统 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1719700A1 (ru) * | 1989-10-24 | 1992-03-15 | Горьковский Автомобильный Завод | Система питани дл газового двигател внутреннего сгорани |
CA2375937A1 (fr) * | 1994-08-30 | 1996-03-07 | Michael A. Knappers | Vanne a deux phases |
DE10018757A1 (de) * | 2000-04-15 | 2001-10-18 | Kromschroeder Ag G | Gasarmatur zum Regeln des Druckes und zum Absperren eines Gasstromes |
DE10232647B4 (de) * | 2002-07-18 | 2004-05-13 | Honeywell B.V. | Regeleinrichtung für Gasbrenner |
NZ522153A (en) * | 2002-10-21 | 2005-03-24 | John Blakemore Harrison | Method and apparatus for fuel injection systems with choked flow and a tapered valve. |
CA2630767A1 (fr) * | 2005-11-23 | 2007-05-31 | Sit La Precisa S.P.A. | Dispositif de commande de fourniture d'un gaz combustible a un appareil a bruleur |
ITPD20060126A1 (it) * | 2006-04-05 | 2007-10-06 | Omvl Srl | Dispositivo di controllo della erogazione di un gas combustibile in motori a combustione interna. |
EP2047158B1 (fr) * | 2006-07-28 | 2015-08-19 | Sit S.P.A. | Dispositif destiné à commander la distribution d'un gaz combustible dans un appareil de brûleur |
RU2347094C2 (ru) * | 2006-12-26 | 2009-02-20 | Владимир Алексеевич Ильченко | Газовый редуктор высокого давления |
IT1398346B1 (it) * | 2010-02-23 | 2013-02-22 | Omvl S P A | Dispositivo riduttore di pressione di tipo compensato, particolarmente per impianti a gas combustibile di alimentazione di motori a combustione interna per auto-trazione. |
-
2012
- 2012-09-20 IT IT000274A patent/ITPD20120274A1/it unknown
-
2013
- 2013-09-19 CN CN201380049186.3A patent/CN104685437B/zh not_active Expired - Fee Related
- 2013-09-19 EP EP13801754.6A patent/EP2898388A1/fr not_active Withdrawn
- 2013-09-19 WO PCT/IB2013/058665 patent/WO2014045218A1/fr unknown
- 2013-09-19 RU RU2015106846A patent/RU2659119C2/ru active
Non-Patent Citations (1)
Title |
---|
See references of WO2014045218A1 * |
Also Published As
Publication number | Publication date |
---|---|
ITPD20120274A1 (it) | 2014-03-21 |
RU2659119C2 (ru) | 2018-06-28 |
CN104685437A (zh) | 2015-06-03 |
CN104685437B (zh) | 2019-09-13 |
RU2015106846A (ru) | 2016-11-10 |
WO2014045218A1 (fr) | 2014-03-27 |
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