• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method of detecting water in diesel filters comprising disposing a first and a second electrode (1.1; 1.2) in a medium located in the diesel filter forming an equivalent "rc" parallel circuit; applying an injection phase (a) in which a first closed switch (3.1) and a second open switch (3.2) are arranged, so that a working electrical current is injected into the first electrode (1.1) and the second electrode (1 .2) is connected to earth, providing an electric charge; apply a relaxation phase (b) in which the first switch (3.1) open and the second switch (3.2) closed, so that both the first electrode (1.1) and the second electrode (1.2) are arranged connected to ground, with the electric charge dissipated in the middle; evaluate the voltage as a function of a capacitive component of the equivalent "rc" parallel circuit; and determine the means by means of said evaluation. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2597165A1
    申请号:ES201630445
    申请日:2016-04-11
    公开日:2017-01-16
    发明作者:Jose Luis Landatxe Zugarramurdi；Sergio Díez García
    申请人:Cebi Electromechanical Components Spain SA；
    IPC主号:
    专利说明:

    5
    10
    fifteen
    twenty
    25
    30
    35
    DESCRIPTION
    METHOD OF WATER DETECTION IN GASOLEO FILTERS AND WATER SENSOR
    FOR THE APPLICATION OF SUCH METHOD
    Technology Sector
    The present invention is related to the industry dedicated to diesel engine fuel filters, and more specifically to the industry dedicated to the detection of water in diesel engine fuel filters, proposing a method to carry out this detection, together with a water sensor to use said method.
    State of the art
    At present, the need to remove water contained in the fuel from diesel engines is known to prevent said water from coming into contact with sensitive elements of injection systems of said engines, on which water can have a harmful effect. due to corrosion phenomena, such as oxidation and deposition of insoluble salts.
    The use of diesel filters separates the water from the diesel. The water that separates from the fuel of diesel engines is decanted and collected in a specific area for this, which, being the water denser than diesel, is usually located at the bottom of the envelope of diesel filters.
    Water sensors are available in diesel filters. By means of these sensors, when the decanted water reaches a predetermined maximum level in the lower part of the envelope of the diesel filters, a warning signal is emitted. The warning sign indicates the need to carry out an extraction of the collected water before causing damage to the engines. For the detection of water, these sensors include two metal electrodes arranged in correspondence with said lower part of the envelope.
    It is known to detect in the water decantation zone the accumulation of water separated from the diesel in the diesel filters using complex water sensors, while
    5
    10
    fifteen
    twenty
    25
    30
    35
    it extends the effectiveness of this detection over time by injecting electric current into the electrodes non-continuously or intermittently. Water detection is a function of the value of the resistive component of the medium in which the electrodes of the diesel sensor are submerged in the diesel filters.
    However, although by intermittent injection of electric current to the electrodes and analysis of the resistive component, an elongation of the functional life of the water sensor can be obtained by a very important factor, for example up to 40 times, compared to a Water sensor fed with electric current continuously, in the long term the formation of insoluble salt deposits in the electrodes is inevitable. This entails a gradual increase in the value of the resistive component in the presence of a conductive medium (for example water) until reaching values close to those that characterize an insulating medium (for example oil or diesel), so that the water sensor remains unusable when the discrimination of water with respect to diesel or oil is impossible.
    In some types of vehicles the functional life of the water sensors with the injection of electric current intermittently and the analysis of the resistive component may in some cases be sufficient. In other types of vehicles, however, the duration requirements are much more severe, a typical profile being a total operating time of 20,000 hours corresponding to 1,500,000 km traveled, in which 1000 to 2000 presence events can occur of water with a total exposure time of between 1000 and 2000 hours. Especially for this type of vehicle, both a method and a water sensor with improved immunity against the phenomena of deposit formation in the electrodes are necessary.
    It is therefore necessary a method, as well as a sensor, to detect the presence of water in diesel filters that increase the effectiveness against corrosion phenomena.
    Object of the invention
    The invention relates to a method of detecting water in diesel oil filters and a water sensor to be used according to said method.
    5
    10
    fifteen
    twenty
    25
    30
    35
    The method of detecting water in diesel filters comprises the steps of arranging a first electrode and a second electrode in a medium located in the diesel filter, an equivalent parallel "RC" circuit being formed; applying an injection phase in which a first closed switch and a second open switch are arranged, so that a working electric current is injected into the first electrode and the second electrode is grounded, providing an electric charge; apply a relaxation phase in which the first open switch and the second closed switch are arranged, so that both the first electrode and the second electrode are arranged grounded, the electrical charge being dissipated in the middle; evaluate the voltage based on a capacitive component of the equivalent parallel “RC” circuit; and determine the medium by assessing the voltage depending on the capacitive component.
    As described, it is determined that the medium is a conductive medium when the voltage has an increasing value, the capacitive component being obtainable.
    The method additionally comprises a calibration phase in which the first electrode and the second electrode are located in a controlled insulating medium, an electrical test current is injected and a rise time that takes the voltage to be in a stationary regime is measured.
    After the calibration phase, the evaluation of the voltage as a function of the capacitive component is carried out after the rise time has elapsed since the injection of the working electric current in the injection phase begins. Alternatively, the evaluation of the voltage as a function of the capacitive component is carried out at the end of the rise time plus a delay time since the injection of the working electric current in the injection phase begins.
    The water sensor, meanwhile, comprises the first electrode, the second electrode, a current connection for connection of the first electrode to a current source, a ground connection for connection of the second ground electrode, an intermediate connection for connection of the first electrode and the second electrode, the first switch disposed in the current connection and the second switch disposed in the intermediate connection.
    5
    10
    fifteen
    twenty
    25
    30
    35
    Description of the figures
    Figure 1 shows a switching bridge schematically, which is comprised in a water sensor object of the present invention.
    Figure 2 graphically shows a signal for injecting an electrical current working in time, an evolution in time of a voltage signal at the output of a current source in an insulating medium and an evolution in time of a signal of voltage at the outlet of the current source in a conductive medium for the water sensor being new and being aged.
    Figure 3 graphically shows the signal of injection of the electrical current working over time, an evolution in time of a voltage signal between two electrodes in an insulating medium and an evolution in time of a voltage signal between the two electrodes in a conductive medium for the water sensor being new and aging.
    Detailed description of the invention
    The invention relates to a water sensor and a method of detecting water in diesel filters by using said water sensor. The sensor comprises a switching bridge of great simplicity both in terms of the number of components and in their arrangement with each other. The switching bridge is shown in Figure 1.
    In Figure 1 it is observable how the water sensor comprises two electrodes (1.1, 1.2), a first electrode (1.1) and a second electrode (1.2). Additionally, the water sensor comprises a current connection (2.1) for connection of the first electrode (1.1) to a current source (not shown in the figures), a ground connection (2.2) for connection of the second electrode (1.2) to ground, an intermediate connection (2.3) for connection of the first electrode (1.1) and the second electrode (1.2) to each other, a first switch (3.1) arranged in the current connection (2.1) and a second switch (3.2) arranged in the intermediate connection (2.3).
    With the water sensor installed in the diesel filter, and the two electrodes (1.1, 1.2) submerged in a medium stored in the water decantation zone of said filter, the
    5
    10
    fifteen
    twenty
    25
    30
    35
    two electrodes (1.1, 1.2) and the medium form a system, the equivalent circuit formed by said system being a parallel "RC" circuit.
    The first switch (3.1) and the second switch (3.2) are governed by a first control signal (4.1) and a second control signal (4.2), respectively. By means of said control signals (4.1,4.2) the said switches (3.1, 3.2) are opened and closed. The water sensor additionally comprises a control unit configured to control the opening and closing of both the first switch (3.1) and the second switch (3.2) by the first control signal (4.1) and the second control signal (4.2) . This configuration allows two states of the water sensor, a connection state and a discharge state. The connection state and the discharge state correspond to an injection phase (A) and a relaxation phase (B), respectively.
    In the injection phase (A), the first switch (3.1) is closed and the second switch (3.2) is open, so that the first electrode (1.1) is injected with a working electric current and the second electrode (1.2) is grounded. In the relaxation phase (B), the first switch (3.1) is open and the second switch (3.2) is closed, so that both the first electrode (1.1) and the second electrode (1.2) are arranged connected to Earth. In this way, it is alternated to inject the working electric current to the first electrode (1.1) with the second electrode (1.2) being grounded with both the first electrode (1.1) and the second electrode (1.2) being grounded.
    In the relaxation phase (B) there is a free discharge of the equivalent capacitor "C" from the equivalent circuit "RC". That is, during the injection phase (A) in which the working electric current is injected into the first electrode (1.1) an electric charge is provided, which dissipates in the medium in which the two electrodes are located (1.1 , 1.2) during the relaxation phase (B) immediately after. In this way, all chemical reactions linked to the contribution of the electric charge are minimized, or even canceled.
    The current source supplies pulses of the working electrical current of a given polarity. However, at the level of the two electrodes (1.1, 1.2), and due to the introduction of the relaxation phase (B) after each of the injection phases (A), the direction of the electric work current at the level of the two electrodes (1.1, 1.2) are periodically inverted, providing for the desired effects, a polarization in current
    5
    10
    fifteen
    twenty
    25
    30
    35
    alternate The electric working current is of a nominal value between 1 and 11 pa.
    In figures 2 and 3, an injection signal (i) of the working current in time is appreciable, so that it is appreciable when the working electric current is being injected into the first electrode (1.1), marked with a “1 ", And when said current is not being injected into the first electrode (1.1), marked with a" 0 ".
    In the injection phase (A) the presence of water in the medium in which the two electrodes (1.1, 1.2) are submerged is determined based on the capacitive component of the equivalent “RC” circuit. When the medium in which the two electrodes are located (1.1, 1.2) is an insulating medium, the value of the capacitive component is a lower value than when the medium in which the two electrodes are located (1.1, 1.2) is a half conductor
    The values of the capacitive component vary widely depending on the geometric properties of the two electrodes (1.1, 1.2) used, but for a specific embodiment in which for example the two electrodes (1.1, 1.2) are cylindrical and are arranged parallel between if spaced in the order of 5 mm, the value of the capacitive component in an insulating medium can reach 100 pF, while this same configuration of the two electrodes (1.1, 1.2) submerged in a conductive medium yields a value of the capacitive component of the order one thousand times higher, which has a very wide margin for discrimination. The values observed for the case of the resistive component, on the other hand, are of the order of 25 MQ for the insulating medium and 50 kQ for the conductive medium. The difference obtained for a conductive medium and an insulating medium is clearly greater for the value of the capacitive component than for the value of the resistive component, which provides a better determination of the medium in which the two electrodes are located (1.1, 1.2 ).
    According to another embodiment, the value of the capacitive component corresponding to an insulating medium is between 80 and 120 pF, or less; while the value of the capacitive component corresponding to a conductive medium is between 80 and 120 nF, or more. Preferably, when the value of the capacitive component is greater than 1 nF it is determined that it is a conductive medium.
    Tests have shown that the value of the resistive component for a conductive medium
    5
    10
    fifteen
    twenty
    25
    30
    35
    it tends to increase resembling values corresponding to an insulating medium as a result of depositions of insoluble salts. This is because insoluble salt depositions absorb diesel oil by drifting into an insulating layer that wraps at least one of the two electrodes (1.1, 1.2), so that the water sensor obtains erroneous resistive component measurements when the two electrodes (1.1, 1.2) are submerged in water.
    The value of the capacitive component, on the other hand, is immune or at least is significantly less affected by depositions of insoluble salts. In this way, the present invention offers a great capacity for water detection, even in the face of repeated use of the method and of the water sensor, as well as great simplicity in the constitution of the water sensor.
    For a correct determination of the presence of water as a function of the capacitive component it is necessary to evaluate the voltage at a time when the voltage is in a transient regime so that the value of the capacitive component is obtainable, since if the voltage enters stationary or permanent regime, the value of the capacitive component is not obtainable or not measurable since when the voltage enters the stationary regime the voltage signal stabilizes becoming dependent solely on the resistive component.
    For the evaluation of the voltage, preferably this is measured at the output of the current source, that is to say at a first point corresponding to the current connection (2.1). Figure 2 shows, in a graphic and simplified way, an evolution in time of a first voltage signal (V.1.a) corresponding to the voltage measured in the current connection (2.1) in an insulating medium being the new water sensor, an evolution in time of a second voltage signal (V.1.cn) corresponding to the voltage measured in the current connection (2.1) in a conductive medium being the new water sensor and an evolution in the time of a third voltage signal (V.1.cv) corresponding to the voltage measured in the current connection (2.1) in a conductive medium while the water sensor is aged, that is, after use thereof.
    Alternatively, for the evaluation of the voltage this is measured at a second point between the first switch (3.1) and the second switch (3.2), that is, the voltage corresponding to the voltage between the two electrodes (1.1, 1.2) is evaluated. In figure 3 it
    5
    10
    fifteen
    twenty
    25
    30
    35
    shows, in a graphic and simplified way, an evolution in time of a fourth voltage signal (V.2.a) corresponding to the voltage between the two electrodes (1.1, 1.2) in an insulating medium being the new water sensor, an evolution in time of a fifth voltage signal (V.2.cn) corresponding to the voltage between the two electrodes (1.1, 1.2) in a conductive medium being the new water sensor and an evolution in time of a sixth voltage signal (V.2.cv) corresponding to the voltage between the two electrodes (1.1, 1.2) in a conductive medium with the water sensor aged, that is, after use thereof.
    Accordingly, the evaluation of the voltage as a function of the capacitive component is carried out in an initial part of the duration of the injection phase (A). That is to say, the evaluation of the voltage as a function of the capacitive component can be carried out at the moment in which a waiting time elapses since the injection of the working electric current in the injection phase (A) begins. This waiting time is set between 100 and 250 milliseconds or, alternatively, it is established through a calibration phase.
    The method comprises the calibration phase for optimization thereof. According to the calibration phase, the water sensor is arranged so that the two electrodes (1.1, 1.2) are located in a controlled insulating means, that is, known. For this, the water sensor can be installed or mounted on the corresponding diesel oil filter. The controlled insulating medium is preferably diesel. Alternatively, this insulating medium may be oil, or even air, having a permittivity similar to that of diesel oil.
    Subsequently, an electrical test current is injected in pulses to the first electrode (1.1) and, by means of the control unit, a measurement of the time required for the voltage to reach the stationary regime under the conditions described is carried out, which is called rise time (Ts). The rise time corresponds to the waiting time mentioned above. For this, the voltage is preferably measured at the first point corresponding to the current connection (2.1). The rise time (Ts) is stored in an internal memory included in the water sensor. For subsequent evaluations after the voltage calibration phase, this rise time (Ts) is taken into account. The electric test current is preferably of a nominal value between 1 and 11 pa, so that the electric test current and the working electric current can be the same.
    5
    10
    fifteen
    twenty
    25
    30
    35
    Diesel has a lower capacity than water, and therefore a time constant less than water. That is, the voltage reaches the steady or permanent regime significantly earlier in time for the case of an insulating medium than for the case of a conductive medium.
    In this way, when the water sensor is in use after the waiting time is established, when said time elapses and the voltage is evaluated, if a value of the constant tension in time is obtained, it is considered that the tension has reached the regime stationary being the value of the capacitive component not obtainable, and it is determined that the medium in which the two electrodes (1.1, 1.2) are located is an insulating medium; while if the value of the increasing voltage is obtained over time it is considered that the voltage is in the transitory regime being the value of the capacitive component obtainable, and it is determined that the medium in which the two electrodes are located (1.1 , 1.2) is a conductive medium. In the latter case, the value of the capacitive component obtained is high, that is, it is a value closer to 1 nF than to 1 pF. In order to know if the measured voltage is growing or is kept constant, the measured voltage signal is digitally treated by means included in the sensor that are configured for this purpose.
    For a better optimization of the method, the evaluation of the voltage as a function of the capacitive component takes place at the moment in which the waiting time plus an additional waiting time elapses since the injection of the working electric current into the injection phase (A). This additional waiting time, called delay time (Tr), is due, for example, to the fact that for the water sensor the time required to reach the stationary regime both in an insulating medium and in a conductive medium may vary depending on various characteristic aspects of the water sensor. Some of these aspects are: geometric construction of the water sensor and manufacturing tolerances of the components included in the water sensor. The delay time value (Tr) is preferably between 15 and 25 milliseconds.
    In Figures 2 and 3 it can be further observed that the method may additionally comprise adapting the frequency of injection of the working electric current so that the duration of the injection phases (A) is such that the voltage is at all times in the transitional regime when it is a conductive medium, that is to say water. In this way, it contributes to the lengthening of the useful life of the water sensor.
    5
    10
    fifteen
    twenty
    25
    30
    35
    By means of the present water sensor a sensor of great simplicity is therefore provided. This simplicity translates into a reduction in the total cost, both in terms of the number of components and the manufacturing process required. Through this method, great effectiveness is provided in the detection of water in diesel filters due, among other reasons, to the simplicity of the water sensor used. Furthermore, said detection being based on the measurement and analysis of the capacitive component of the equivalent “RC” circuit, it provides a greater extension of the useful life of the water sensor.
    权利要求:
    Claims (6)
    [1]
    5
    10
    fifteen
    twenty
    25
    30
    35
    1. - Method of detecting water in diesel filters, characterized in that it comprises the steps of:
    - arranging a first electrode (1.1) and a second electrode (1.2) in a medium located in the diesel oil filter, an equivalent parallel "RC" circuit being formed;
    - apply an injection phase (A) in which a first switch (3.1) closed and a second switch (3.2) open are arranged, so that a working electrical current is injected into the first electrode (1.1) and the second electrode (1.2) is grounded, providing an electric charge;
    - applying a relaxation phase (B) in which the first switch (3.1) open and the second switch (3.2) closed are arranged, so that both the first electrode (1.1) and the second electrode (1.2) are arranged connected to ground, the electric charge being dissipated in the middle;
    - evaluate the voltage based on a capacitive component of the equivalent parallel "RC" circuit; and
    - determine the medium by assessing the voltage depending on the capacitive component.
    [2]
    2. - Method according to claim 1, characterized in that it is determined that the medium is a conductive medium when the voltage has an increasing value, the capacitive component being obtainable.
    [3]
    3. - Method according to claim 1 or 2, characterized in that it additionally comprises a calibration phase in which the first electrode (1.1) and the second electrode (1.2) are located in a controlled insulating medium, an electric current is injected from test and measure a rise time (Ts) that takes the tension to be in steady state.
    [4]
    4. - Method according to claim 3, characterized in that the evaluation of the voltage as a function of the capacitive component is carried out at the end of the rise time (Ts) since the injection of the working electric current in the phase begins of injection (A).
    [5]
    5. - Method according to claim 3, characterized in that the evaluation of the tension in
    5
    10
    fifteen
    twenty
    25
    30
    35
    The function of the capacitive component is carried out after the rise time (Ts) plus a delay time (Tr) has elapsed since the injection of the working electrical current in the injection phase (A) begins.
    [6]
    6. Water sensor for application of the method according to any one of claims 1 to 5, characterized in that it comprises the first electrode (1.1), the second electrode (1.2), a current connection (2.1) for connection of the first electrode (1.1) to a current source, a ground connection (2.2) for connection of the second electrode (1.2) to ground, an intermediate connection (2.3) for connection of the first electrode (1.1) and the second electrode (1.2) to each other , the first switch (3.1) provided in the power connection (2.1) and the second switch (3.2) arranged in the intermediate connection (2.3).
    类似技术:
    公开号 | 公开日 | 专利标题
    US20200408659A1|2020-12-31|Soot Sensor System
    BR112016027345B1|2021-08-03|LEVEL SENSOR FOR DETECTION OF THE LEVEL OF A MEDIUM CONTAINED IN A RESERVOIR, METHOD FOR CONTROLLING A LEVEL AND RESERVOIR SENSOR
    JP5989240B2|2016-09-07|Function monitoring method of particle detection sensor and particle detection sensor
    US20110109333A1|2011-05-12|Detection of Water Ingress to an Apparatus by Resistance Measurements Between Two Electrodes
    ES2597165B1|2017-09-19|METHOD OF WATER DETECTION IN GASOLLE FILTERS AND WATER SENSOR FOR THE APPLICATION OF SUCH METHOD
    EA200601396A1|2006-12-29|SYSTEM AND METHOD OF MEASURING ELECTRIC CURRENT IN A PIPELINE
    US20180202960A1|2018-07-19|Fet-Type Gas Sensor and Method of Controlling Gas
    ES2577021T3|2016-07-12|Procedure and smoke detection apparatus in an ionization chamber
    RU2018129581A|2020-03-12|ELECTRODE-GENERATING AEROSOL SYSTEM
    ES2375117B1|2013-01-28|PROCEDURE TO MEASURE THE TEMPERATURE.
    US10067048B2|2018-09-04|Method for controlling the function of a sensor for detecting particles
    BR112017016577B1|2021-08-03|METHOD TO MEASURE THE PRESENCE OF WATER IN OIL AND GAS FILTERS AND WATER SENSOR TO PERFORM THE METHOD
    CN108369174A|2018-08-03|Electrostatic soot sensor
    US9329226B2|2016-05-03|Method for ascertaining at least one malfunction of a conductive conductivity sensor
    JP2010025782A|2010-02-04|Liquid level sensor
    CN111527401A|2020-08-11|Sensor device for detecting an electrically conductive medium and method for operating a sensor device
    ES2764443T3|2020-06-03|Procedure and device to determine the internal resistance of a sensor element
    US20080110769A1|2008-05-15|Exhaust gas sensors and methods for measuring concentrations of nox and ammonia and temperatures of the sensors
    ES2773580T3|2020-07-13|Procedure for establishing a state of an object electrically conductive and protected by cathodic corrosion protection and device for establishing state
    US10920702B2|2021-02-16|Method for operating an electrostatic soot sensor
    ES2684611B1|2019-06-21|Water sensor for water detection in diesel filters
    RU2740797C1|2021-01-21|Electrolyte solution density and level meter in battery
    US20220011362A1|2022-01-13|Method for Determining an Electrical Fault of a Conductivity Sensor, and Conductivity Sensor
    JP5266287B2|2013-08-21|Gas concentration detector
    JP5796704B2|2015-10-21|Glass film resistance measurement circuit
    同族专利:
    公开号 | 公开日
    ES2597165B1|2017-09-19|
    US10732136B2|2020-08-04|
    WO2017178678A1|2017-10-19|
    CN109073444B|2021-04-09|
    US20190086353A1|2019-03-21|
    CN109073444A|2018-12-21|
    BR112018070815A2|2019-02-05|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5103368A|1990-05-07|1992-04-07|Therm-O-Disc, Incorporated|Capacitive fluid level sensor|
    US6820483B1|2003-09-15|2004-11-23|Mechanical Ingenuity Corp.|Electronic water solution level detector|
    ES2530691A1|2015-02-02|2015-03-04|Zertan Sa|Method of measuring the presence of water in diesel filters and water sensors to carry out said method |ES2684611A1|2017-03-30|2018-10-03|Cebi Electromechanical Components Spain, S.A.|Water sensor for water detection in diesel filters |JP2012504039A|2008-09-30|2012-02-16|パーキンズエンジンズカンパニーリミテッド|Method and apparatus for regenerating a filter|
    DE102010029307A1|2010-05-26|2011-12-01|BSH Bosch und Siemens Hausgeräte GmbH|Domestic appliance with a container and a level measuring device and corresponding level measurement method|
    JP5874195B2|2011-05-20|2016-03-02|いすゞ自動車株式会社|Particulate matter sensor|
    CN102393225B|2011-11-08|2013-09-04|合肥工业大学|High/low voltage switching excitation system of electromagnetic flowmeter with bypass and energy feedback circuit|
    US9638661B2|2012-02-23|2017-05-02|The Board Of Trustees Of The University Of Illinois|Method and apparatus for controlling a flow of particles by way of a through-hole|
    JP2015075007A|2013-10-08|2015-04-20|いすゞ自動車株式会社|Exhaust emission control system|
    CN104022676A|2014-06-17|2014-09-03|电子科技大学|Asymmetric waveform pulse power supply|
    CN105402064B|2015-12-18|2019-07-02|中国电子科技集团公司第十三研究所|A kind of integrated form filter fuel Heating and level sensing device|
    法律状态:
    2017-09-19| FG2A| Definitive protection|Ref document number: 2597165 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170919 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201630445A|ES2597165B1|2016-04-11|2016-04-11|METHOD OF WATER DETECTION IN GASOLLE FILTERS AND WATER SENSOR FOR THE APPLICATION OF SUCH METHOD|ES201630445A| ES2597165B1|2016-04-11|2016-04-11|METHOD OF WATER DETECTION IN GASOLLE FILTERS AND WATER SENSOR FOR THE APPLICATION OF SUCH METHOD|
    BR112018070815A| BR112018070815A2|2016-04-11|2017-04-06|method for detecting water in diesel fuel filters and water sensor to apply said method|
    CN201780022969.0A| CN109073444B|2016-04-11|2017-04-06|Method for detecting water in a diesel fuel filter and water sensor for applying said method|
    US16/091,851| US10732136B2|2016-04-11|2017-04-06|Method for detecting water in diesel fuel filters and water sensor for carrying out said method|
    PCT/ES2017/070214| WO2017178678A1|2016-04-11|2017-04-06|Method for detecting water in diesel fuel filters and water sensor for carrying out said method|
    [返回顶部]