WO2016080984A1 - Elément de détection de pression différentielle pour des raccords d'orifice de pression - Google Patents

Elément de détection de pression différentielle pour des raccords d'orifice de pression Download PDF

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Publication number
WO2016080984A1
WO2016080984A1 PCT/US2014/066412 US2014066412W WO2016080984A1 WO 2016080984 A1 WO2016080984 A1 WO 2016080984A1 US 2014066412 W US2014066412 W US 2014066412W WO 2016080984 A1 WO2016080984 A1 WO 2016080984A1
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WO
WIPO (PCT)
Prior art keywords
port
fluid
fitting
structured
body portion
Prior art date
Application number
PCT/US2014/066412
Other languages
English (en)
Inventor
Joseph C. SALEE
Original Assignee
Cummins, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cummins, Inc. filed Critical Cummins, Inc.
Priority to PCT/US2014/066412 priority Critical patent/WO2016080984A1/fr
Publication of WO2016080984A1 publication Critical patent/WO2016080984A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/10—Indicating devices; Other safety devices
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/40—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements with means for detection of clogging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F01M2011/031—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means
    • F01M2011/033—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means comprising coolers or heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/024—Fluid pressure of lubricating oil or working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • 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
    • F16N—LUBRICATING
    • F16N2250/00—Measuring
    • F16N2250/04—Pressure

Definitions

  • Engine diagnostics and prognostics for internal combustion engines have become relatively more customary when performing maintenance over recent years.
  • Some of these tests use sensors to measure data used in the diagnostic or prognostic test procedures.
  • sensors have been developed to measure the change in fluid pressure across a fiuid filter head to monitor fluid filter performance.
  • existing approaches typically use an internally mounted sensor.
  • the internally mounted pressure sensor typically requires additional plumbing, hose routing, or gasket seals which add cost and complexity to the system. This not only may substantially prevent ease of service or maintenance of the pressure sensor, but this configuration may also result in errors in the diagnostic and prognostic tests due to the complexity in the system.
  • the fitting includes a first body portion defining a first opening and a first port, wherein the first port is structured to receive an incoming amount of fluid.
  • the fitting also includes a second body portion defining a second opening and a second port, wherein the second port is structured to receive an outgoing amount of fluid.
  • the fitting further includes a web interconnecting the first body portion to the second body portion, and a pressure sensor structured to measure a pressure differential between the incoming amount of fluid and the outgoing amount of fluid.
  • the fitting is a unitary or one-piece component. As such, the fitting alleviates the need for multiple pressure-sensing components to monitor the fluid pressure across the fiuid filter head.
  • the system includes a fluid filter head structured to receive a fluid filter and a fitting for structured to direct an incoming amount of fluid to the fluid filter head and to receive an outgoing amount of fluid from the filter head.
  • the fitting includes a first body portion defining a first opening and a first port, wherein the first port is structured to receive the incoming amount of fluid.
  • the fitting also includes a second body portion defining a second opening and a second port, wherein the second port is structured to receive the outgoing amount of fluid.
  • the fitting further includes a web interconnecting the first body portion to the second body portion, and a pressure sensor structured to measure a pressure differential across the fitting.
  • the fitting attaches externally to the fluid filter head and serves as an intermediary between the fluid filter head and the incoming and outgoing fluid lines. Due to the fitting's proximate location to the fluid filter head, the measured pressure differential may be representative of the pressure difference across the fluid filter head. Accordingly, the fitting provides a non-intrusive diagnostic tool for a fluid filter in the filter head, which thereby substantially alleviates the need for internally located pressure sensing elements.
  • the engine system includes an internal combustion engine and an oil filter head for housing an oil filter, wherein the oil filter head includes an inlet opening that is structured to receive an incoming amount of oil and an outlet opening that is structured to provide an outgoing amount of oil.
  • the engine system further includes a unitary fitting attached to the oil filter head, wherein the fitting includes: a first body portion defining a first port that is structured to receive the incoming amount of oil; a second body portion defining a second port that is structured to receive the outgoing amount of oil; a web interconnecting the first body portion to the second body portion; and a pressure sensor structured to measure a pressure differential between the incoming amount of oil and the outgoing amount of oil. Utilizing these pressure differential measurements to determine when an oil filter change or service is needed substantially prevents reliance on a predetermined maintenance schedule, such that relatively better diagnostics and prognostics of the oil filter are achieved.
  • FIG. 1 is an isometric view of an engine with a fluid filter assembly, according to an example embodiment.
  • FIG. 2 is an isometric view of the fluid filter assembly of FIG. 1, according to an example embodiment.
  • FIG. 3 is an isometric view of a fitting for a fluid filter assembly, according to an example embodiment.
  • FIG. 4 is cross-sectional view of the fitting of FIG. 3, according to an example embodiment.
  • FIG. 5 is an exploded assembly view of a fitting and fluid filter head, according to an example embodiment.
  • FIG. 6 is an isometric cross-sectional view of the fitting and fluid filter assembly of FIG. 5, according to an example embodiment.
  • FIG. 7 is an isometric view of a fitting, according to another example embodiment. DETAILED DESCRIPTION
  • the fitting is structured as a unitary (e.g., one-piece) component that may be coupled to a fluid filter head.
  • the fitting includes a first body portion
  • a pressure sensing element is located on the fitting and measures the differential pressure across the fitting based on the fluid entering and the fluid leaving the fitting. Due to the proximate location of the fitting to the filter head, the measured pressure differential may substantially represent the pressure differential across the filter head.
  • the measured differential pressure may be used by a controller, service personnel, or other system diagnostic to diagnose the filter housed by the filter head (e.g., whether the filter is blocked with debris).
  • a user may know when a fluid filter change or service is needed based on the measured pressure differential rather than based on a predetermined maintenance schedule (e.g., replace filter every X hours of service).
  • a predetermined maintenance schedule e.g., replace filter every X hours of service.
  • the fitting is adaptable for a wide array of structures, sizes, and/or configurations of fluid filter heads. This provides the fitting with a modular and non-intrusive aspect that may reduce the need and cost for filter-specific pressure sensing elements.
  • the first port of the first body portion is fluidly coupled to an oil inlet line.
  • the first port directs the fluid into an opening in the first fastener, which directs the oil to the oil filter within the oil filter head.
  • a second opening in the second fastener receives the oil from the oil filter head and directs the oil to the second port of the second body portion which is fluidly coupled to an oil outlet line.
  • the fitting receives the inlet and outlet oil to and from the oil filter assembly.
  • this measured change in pressure provides an indication of the pressure drop across the oil filter. As such, based on the measured differential pressure, a determination of whether the oil filter needs to be serviced may be made.
  • FIG. 1 an isometric view of an engine system 100 is shown according to one embodiment.
  • the engine system 100 is shown to include an engine 102 and a fluid filter assembly 104. Coupled to the engine system 100 may be other powertrain components such as a transmission, a drive shaft, a differential, and a final drive, all of which may be part of a vehicle.
  • the engine 102 receives a chemical energy input (e.g., a fuel such as gasoline or diesel) and combusts the fuel to generate mechanical energy in the form of a rotating crankshaft.
  • a chemical energy input e.g., a fuel such as gasoline or diesel
  • the transmission receives the rotating crankshaft and manipulates the speed of the crankshaft (e.g., the engine revolutions-per-minute (RPM)) to affect a desired drive shaft speed.
  • the rotating drive shaft is received by the differential, which provides the rotational energy of the drive shaft to the final drive.
  • the final drive then propels or moves the vehicle.
  • the engine system 100 may be implemented with various stationary applications, such as a power generator. Accordingly, the fitting 110 and fluid filter head assembly 104 described herein may be widely used in a variety of different applications.
  • the engine 102 may be structured as any engine type: from an internal combustion engine to a full electric motor.
  • the engine 102 is structured as any internal combustion engine (e.g., compression-ignition or spark-ignition) that can be powered by any type of fuel (e.g., diesel, ethanol, gasoline, etc.).
  • the engine 102 may be embodied in a vehicle. Accordingly, the vehicle may also include other subsystems.
  • the subsystems may include both electrically-powered accessories and engine driven accessories, as well as any other type of subsystem.
  • a subsystem may include an exhaust aftertreatment system.
  • the exhaust aftertreatment system may include any component used to reduce diesel exhaust emissions, such as a selective catalytic reduction catalyst, a diesel oxidation catalyst, a diesel exhaust doser with a supply of diesel exhaust fluid, and a plurality of sensors for monitoring the aftertreatment system (e.g., a NOx sensor, a temperature sensor, etc.).
  • the accessories may include, but are not limited to, air compressors (for pneumatic devices), air conditioning systems, power steering pumps, engine coolant pumps, fans, and the like.
  • the fluid filter assembly 104 may be structured as any type of fluid filter assembly included with the engine system 100, or in certain embodiments, a vehicle.
  • the fluid filter assembly 104 may be structured to receive fluids such as oil, fuel, air, transmission fluid, hydraulic fluid, or any other fluid which may need to be filtered within the engine system 100.
  • the fluid filter assembly 104 is structured as an oil filter assembly that filters the oil within the engine 102 and its various components to remove possible debris and particulates.
  • Lubricating fluid e.g., engine oil
  • the filter element (e.g., fluid filter 108) of the fluid filter assembly 104 is structured to remove the unwanted debris and particles.
  • the fluid filter assembly 104 may be structured as a fuel filter assembly for the engine system 100.
  • the fuel filter assembly receives fuel (e.g., diesel, gasoline, propane, etc.) from a fuel source such as a fuel storage tank.
  • Unfiltered fuel may contain several kinds of contamination (e.g., paint chips, dirt, rust, etc.). If these contaminates are not substantially removed prior to the fuel entering the engine 102, rapid wear of the fuel pump and injectors may result. Accordingly, during operation, the fuel filter may become clogged with contaminants, which restricts the flow of fuel and may cause a substantial drop in engine performance.
  • the fluid filter assembly may be included with a coolant system (e.g., attached to a radiator of a vehicle).
  • a coolant system e.g., attached to a radiator of a vehicle.
  • the fitting 110 described herein may be utilized. Accordingly, while the description provided herein is substantially in regard to an oil filter assembly, it should be understood that the fitting may be utilized with many other types of fluid filter assemblies with all such embodiments intended to be within the spirit and scope of the present disclosure.
  • Fluid filter assembly 104 is shown to include a fluid filter head 106 and a fluid filter 108.
  • the fluid filter head 106 is coupled to the fitting 110.
  • the fitting 110 may be directly coupled to the fluid filter 108.
  • the fitting 110 is coupled to the fluid filter 108 via the fluid filter head 106.
  • the fluid filter 108 is structured as a filtering element.
  • the fluid filter 108 is coupled to the fluid filter head 106. In one embodiment, this coupling creates a seal. This seal may be intended to be fluid tight, such that any fluid passing through the fluid filter head 106 is substantially prevented from escaping/leaking during the filtration process.
  • the fluid directed to the fluid filter 108 is filtered by the fluid filter 108 to remove debris and unwanted particles.
  • the fluid filter 108 may be a semi-permeable filter paper that filters and collects contaminants or debris (e.g., solids, etc.). In other embodiments, the fluid filter 108 may be structured as any type of filter media with any porosity and grade depending on the application. During typical operation, over time,
  • material/debris/particles may build up on the fluid filter 108.
  • the build-up may restrict fluid flow through the fluid filter 108, which may cause inefficient performance of the component(s) that use the filtered fluid.
  • the oil pressure within the system may be relatively lower, which corresponds with potential insufficient amounts of oil at intended locations (e.g., relatively lesser amounts of oil may be used to provide lubrication in a piston-cylinder system thereby causing increased friction between the components and an increase in wear). Accordingly, due to build up, failure conditions may arise for the components that use the filtered fluid (and other components as well).
  • the fitting 110 is attached to the fluid inlet and outlet of the fluid filter head 106 (see also, FIG. 5).
  • the fitting 110 directs fluid into and out of the fluid filter head 106.
  • the fitting 110 includes a pressure sensing element structured to measure the pressure across the fitting 110.
  • the fitting 110 is located external the fluid filter head 106 and therefore, the fluid filter 108. Due to this positioning, the fitting 110 is adaptable for a wide array of filter head assemblies. Not only are complex piping and connectors for interior coupling of a pressure sensing element to the fluid filter substantially avoided, but relatively easier maintenance, repair, and replacement of the fitting 110 may be possible due to the external mounting structure.
  • the fitting 110 is a unitary or one piece component. With this structure, a relatively smaller amount of components may be needed to diagnose the fluid filter.
  • the fitting 110 generally includes a first body portion 120 interconnected via a web 126 or flange to a second body portion 128. As shown, the body portions 120 and 128 are substantially cylindrical in shape, with the cylindrical shape of each body portion 120 and 128 terminating at the web 126.
  • the body portions may be substantially rectangular, square, oval, or any other shape.
  • the shape of the body portions 120, 128 may correspond with the shape of the fluid inlet and outlets of the fluid filter head 106 in order to create an improved fluid connection between the fitting 110 and the filter head 106.
  • the fitting 110 is symmetrical about a vertical axis 116 and a longitudinal axis 114.
  • one or more features of the fitting 110 may be dissimilar (e.g., the body portions may be of different shape), such that the fitting 110 is substantially non-symmetrical about at least one of the vertical axis 116 and the longitudinal axis 114.
  • the relative size and shape of the fitting 110 may vary based on the application, such that the embodiments shown in the Figures are not meant to be limiting. All such variations are intended to be within the spirit and scope of the present disclosure.
  • the web 126 interconnects the first body portion 120 to the second body portion 128.
  • a longitudinal axis 114 extends through a center point of the web 126 (i.e., half of the web is on one side of the axis 114 while the other half is on the other side of the axis 114) as well as a center point of the first and second body portions 120, 128.
  • the center point of the first and second body portions 120, 128 corresponds with first and second ports 124 and 132.
  • the web 126 may interconnect the first body portion 120 to the second body portion 128 from above or below the longitudinal axis 114.
  • the web 126 is also shown to be substantially horizontal (i.e., the web 126 is situated parallel to the longitudinal axis 114). In other embodiments, the web 126 may take the structure of an arc, a "U-shape", a "L-shape", an angled beam, or any other type of connecting structure. Thus, the size and structure of the web 126 may vary. In certain embodiments, the size and structure of the web 126 varies based on the implementation application.
  • fluid inlet and fluid outlet ports of the fluid filter head 106 may be offset at an angle to relative to each other, such that the web 126 is at an angle to match the offset angle and allow the fitting 110 to fluidly connect to the fluid inlet and outlet ports (or openings) of the fluid filter head 106.
  • the web 126 is shown to be substantially rectangular in shape, the shape and size of the web 126 shown is not meant to be limiting, such that its shape and size may vary in other embodiments.
  • the web 126 may have a substantially circular, oval, square, triangular, or any other shape. All such variations are intended to be within the spirit and scope of the present disclosure.
  • the body portions are connected to the web 126 via a corner. In other embodiments, the body portions are connected to the web 126 via a chamfer, fillet, and the like.
  • the fitting 110 is also shown to include a front fitting surface 121 and a rear fitting surface 123.
  • both the front fitting surface 121 and the rear fitting surface 123 are substantially flat surfaces.
  • the rear fitting surface 123 may include a first mounting boss 118 around the first body portion 120 and a second mounting boss 119 around the second body portion 128.
  • the front fitting surface 121 and the rear fitting face 123 may include a mounting boss around each of the first body portion 120 and the second body portion 128 (e.g., the fitting 110 is symmetric about a plane defined by the longitudinal axis 114 and the vertical axis 116, etc.) .
  • the mounting bosses 118 and 119 are substantially cylindrical in shape.
  • the shape may replicate the shape of the respective body portion.
  • the mounting boss may be rectangular in shape.
  • the mounting bosses 118 and 119 are structured to aid attachment of the fitting 110 to the fluid filter head 106.
  • the mounting bosses 118 and 119 provide a surface for which a substantially liquid tight seal between the fitting 110 and the fluid filter head 106 may be made.
  • the front fitting surface 121 is structured provide an area for a fastener to abut as it couples the fitting 110 to the fluid filter head 106 to create a seal.
  • the mounting of the fitting 110 to the fluid filter head 106 is described more fully herein (see, e.g., FIG. 5).
  • the first body portion 120 defines a first opening 122 (e.g., hole, opening, passage, channel, etc.) and the second body portion 128 defines a second opening 130 (e.g., hole, opening, passage, channel, etc.).
  • the first and second openings 122 and 130 are structured to receive first and second fasteners 142 and 144, respectively.
  • the fasteners connect the fitting 110 to the fluid filter head 106.
  • the first opening 122 extends from the front fitting surface 121 through the rear fitting surface 123 of the first body portion 120 (i.e., a through hole).
  • the second opening 130 extends from the front fitting surface 121 through the rear fitting surface 123 of the second body portion 128 (i.e., a through hole).
  • the first and second openings 122 and 130 are concentric relative to their respective body portion. In other embodiments, the openings 122 and 130 may not be concentric relative to their respective the body portions.
  • the first and second openings 122 and 130 are shown to be cylindrical in shape, the first and second openings 122 and 130 may be any shape (e.g., rectangular) based on the application.
  • the shape and size of the first and second openings 122 and 130 may also be different relative to each other and relative to their respective body portions.
  • the first and second body portions 120 and 128 may be substantially cylindrical (like shown), while the first and second openings are rectangular shaped. As such, the size and shape of the openings may vary based on the application.
  • the first body portion 120 defines a first port 124 (e.g., hole, opening, passage, channel, etc.) and the second body portion 128 defines a second port 132 (e.g., hole, opening, passage, channel, etc.).
  • the first port 124 intersects (i.e., is traverse to) the first opening 122.
  • the second port 132 intersects (i.e., is traverse to) the second opening 130. Accordingly, the first port 124 is fluidly coupled to the first opening 122 and the second port 132 is fluidly coupled to the second opening 130.
  • the first port 124 receives an incoming amount of fluid that the fitting 110 directs to the fluid filter head 106.
  • the second port 132 receives an outgoing amount of fluid from the fluid filter head 106.
  • the first and second ports 124 and 132 provide an opening in each respective body portion (see, e.g., FIG. 4).
  • the first and second ports 124, 132 are centrally located on the bottom hemispherical portions of their respective body portions and symmetrical about a vertical axis 116.
  • the location of at least one of the first port 124 and the second port 132 may be non-symmetrical relative the vertical axis 116 (i.e., the ports may be located in different locations on each respective body portion).
  • the first port 124 may be in the position shown in the Figures while the second port 132 is located on the side of the second body portion 128.
  • the first port 124 and the second port 132 may include fluid connectors for coupling the first and second ports 124, 132 to inlet and outlet fluid lines.
  • a first fluid connector 131 is included with the first port 124 and a second fluid connector 133 is included with the second port 132.
  • the first fluid connector 131 and the second fluid connector 133 may not be present.
  • the inlet and outlet fluid lines may be directly coupled to the first and second ports 124 and 132.
  • the fitting 110 is further shown to include a sensor 134.
  • the sensor 134 is located on the web 126. In other embodiments, the sensor 134 may be located in any position on the fitting 110 as long as the sensor 134 may measure the pressure across the fitting 110.
  • the sensor 134 is structured to measure the pressure across the fitting 110.
  • the sensor 134 measures the fluid pressure in at least one of the first port 124 and the first opening 122.
  • the sensor 134 also measures the fluid pressure in at least one of the second port 132 and the second opening 130. The sensor 134 uses these two measurements to determine a pressure differential across the fitting 110.
  • the pressure differential represents the difference in fluid pressure between the fluid entering the fitting 1 10 (and, subsequently) the fluid filter head 106 and the pressure leaving the fluid filter head 106 and the fitting 110. Whilst the measurement is made in regard to pressure across the fitting 110, due to the close proximity of the fitting 110 to the fluid filter head 106, the measured pressure difference may provide an indication of the pressure across the fluid filter head 106. This allows the sensor 134 to measure and monitor the change in pressure across the fluid filter head 106. The change in pressure provides an indication of the pressure drop across the fluid filter 108 to help perform diagnostics and prognostics of the fluid filter 108. As such, based on the measured differential pressure, a determination of whether the fluid filter needs to be serviced may be made.
  • a user may know when a fluid filter change or service is needed based on the measured pressure differential rather than based on a predetermined maintenance schedule (e.g., replace filter every X hours of service). This may provide for better protection of an engine, vehicle, or other device with which the fitting is used while also substantially preventing unnecessary maintenance.
  • a predetermined maintenance schedule e.g., replace filter every X hours of service
  • the sensor 134 may be structured as any type of sensor able to measure the fluid pressure between the two body portions of the fitting 110.
  • the sensor 134 is structured as a differential pressure sensor.
  • the sensor 134 may include, but is not limited to, a differential pressure sensor, a fluid flow sensor (e.g., speed, amount, etc.), and the like. Measuring this differential pressure may be achieved by using a sensing element which changes its characteristic when the net forces applied to it are in equilibrium.
  • the differential pressure may refer to the pressure between the first and second opening 122 and 130 of the fitting 110. In other embodiments, the differential pressure may refer to the pressure differential between the first and second fasteners 142 and 144.
  • Each of these cases refers to measuring the pressure across the fitting 110 and may be used in a variety of embodiments. For example, measuring the pressure difference between the fasteners may be used if a highly accurate pressure difference is needed. This is because the fasteners are the closest fluidly coupled component to the fluid filter head. Therefore, the pressure difference across the fasteners provides the closest indication of the pressure difference across the fluid filter head. However, in various other embodiments, the pressure difference may be taken across the first and second openings 124 and 132. Thus, configuration of the pressure sensing element 134 is adaptable for the application. In each of these cases, a pressure difference across the fluid filter 108 is measured and obtained.
  • FIG. 7 depicts an alternative configuration for the fitting 110 that includes more than one sensor.
  • two sensor elements are used.
  • a first sensor 136 is located on the first body portion 120.
  • a second sensor 138 is located on the second body portion 128.
  • the first and second sensors 136 and 138 are structured to measure fluid properties (e.g., pressure, flow rate, temperature, etc.) of the fluid flowing through each of their respective body portions.
  • fluid properties e.g., pressure, flow rate, temperature, etc.
  • the change in pressure across the fluid filter assembly 104 may be monitored and measured.
  • knowing the representative change in pressure across the assembly a user may be able to perform diagnostics and prognostics of the fluid filter 108 and provide better protection of the filter assembly 104 (and consequently, the engine 102).
  • the sensors may be integrated in various different locations on each of or one of the body portions in other embodiments.
  • the sensors 136 and 138 may be internal to the fitting 110, on the front fitting face 121, on the rear fitting surface 123, on the web 126, or any other location on fitting 110.
  • the number of body portions, webs, and sensors may change to adapt to the desired application in order to monitor various fluid pressures. By increasing the number of body portions, for example, to four, in order to complete the unitary structure of the fitting 110, three interconnecting webs may be required.
  • the fitting 110 may be able to receive two different fluid flows (inlet and outlet) and monitor the pressure change across each flow. Therefore, if the engine system 100 includes two fluid filter assemblies (e.g., oil and fuel), both may be monitored with a single fitting 110.
  • two fluid filter assemblies e.g., oil and fuel
  • FIG. 4 a cross-sectional view of the fitting 110 of FIG. 3 is shown according to an example embodiment.
  • the cross-sectional view of the fitting 110 depicts a clearer structure of the first and second ports 124 and 132 relative to the respective body portions. As shown, each port provides a through-passage through each respective body portion.
  • the fluid filter head 106 defines a first mounting bore 150 (e.g., recess, indent, groove, etc.) and a second mounting bore 152 (recess, indent, groove, etc.).
  • the mounting bores 150 and 152 are structured to substantially abut the rear fitting surface 123.
  • the mounting bores 150 and 152 may mate or adjoin with the mounting bosses 118 and 119.
  • the first and second mounting bores 150, 152 are structured to receive the first and second mounting bosses 118 and 119 of the fitting 1 10.
  • a gasket e.g., a gasket for each mounting bore/boss relationship
  • a gasket for each mounting bore/boss relationship
  • the measurement of pressure change across the fluid filter 108 from the sensor 134 may be relatively more accurate and precise. For example, if a loose seal exists between the fitting and fluid filter head, fluid may escape from the enclosed fluid path. In this case, the pressure of the system may be substantially impacted due to leaking fluid decreasing the pressure of the fluid flow. As a result, the sensor 134 may measure a relatively inaccurate differential pressure across the fitting 110.
  • a gasket may be replaced with other seal- creating devices and/or procedures.
  • a sealer e.g., caulk or another liquid- type sealers
  • a multitude of sealers e.g., gaskets, liquid sealers, etc.
  • the bosses/bores described above may be excluded from the fitting and fluid filter head. Accordingly, many configurations (with sealer, without sealers, with bosses/bores, without bosses/bores, etc.) may be used in the system utilizing the fitting of the present disclosure.
  • the first fastener 142 is received by the first opening 122 of the first body portion 120.
  • the second fastener 144 is received by the second opening 130 of the second body portion 128.
  • the first and second fasteners 142 and 144 attach the fitting 110 to the fluid filter head 106.
  • the fluid filter head 106 defines an inlet opening 151 (e.g., hole, opening, passage, channel, etc.) and an outlet opening 153 (e.g., hole, opening, passage, channel, etc.).
  • the inlet and outlet openings 151 and 153 are substantially surrounded by the bores 151 and 153.
  • the inlet and outlet openings 151 and 153 are structured to receive the first and second fasteners 142 and 144.
  • the fasteners may be any type of fastener including, but not limited to, mechanical fasteners which mechanically couple (e.g., via threads, an interference fit, etc.) the fitting 110 to the fluid filter head 106 via the inlet and outlet openings 151 and 153.
  • the fasteners may securely hold the fitting 110 to the fluid filter head 106 and provide a fluid tight seal.
  • the first and second fasteners 142 and 144 are inserted through the first and second openings 122 and 130.
  • the fasteners 142 and 144 are received by threaded inlet and outlet openings 151 and 153 in the mounting bores 150 and 152 of the fluid filter head 106.
  • the first fastener 142 includes a first washer 146.
  • the first washer 146 is structured to provide a relatively greater area of pressure distribution across the front fitting surface 121, as well as provide a better seal for the incoming fluid flow.
  • the second fastener 144 includes a second washer 148. Like the first washer 146, when the fitting 110 is attached to the fluid filter head 106, the second washer abuts the front fitting surface 121.
  • the second washer 148 is structured to provide a relatively greater area of pressure distribution across the front fitting surface 121, as well as provide a better seal for the exiting fluid flow. It should be noted that in other embodiments, washers 146 and 148 may not be used. And, in still other embodiments, the washers 146 may be separate components from the first and second fasteners 142 and 144. Moreover, in further embodiments, the coupling of the fasteners to the fluid filter head may be via other connections other than threads as described above.
  • the first fastener 142 defines a first traverse port 141 (e.g., hole, opening, passage, channel, etc.) and a first longitudinal port 143 (e.g., hole, opening, passage, channel, etc.).
  • the first traverse port 141 intersects the first longitudinal port 143, such that the first traverse port 141 is fluidly coupled to the first longitudinal port 143.
  • the first traverse port 141 may extend as a passage through a portion of the diameter (e.g., full diameter, half the diameter, 75% of the diameter, etc.) of the first fastener 142. In other alternate embodiments, the first traverse port 141 may extend through the first fastener 142.
  • an interior surface of the first body portion 120 that defines the first opening 122 may be configured to direct the received incoming fluid through the first longitudinal port 143 as compared to out the opening 122 as a leak (i.e., the flow of the incoming fluid is constrained to the longitudinal port 143).
  • the first longitudinal port 143 extends axially, substantially through the first fastener 142.
  • the first longitudinal port 143 extends substantially from (e.g., at or near) the first traverse port 141 through an end of the first fastener 142. This is the end that is at least partly received by the fluid filter head 106 (and, consequently, the fluid filter 108). In other words, this is the end that is fluidly coupled to the filter head 106.
  • the other end of the first fastener 142 is proximate the front fitting surface 121.
  • the first traverse port 141 comes into fluid communication with the first port 124 of the first body portion 120. In turn, the first traverse port 141 receives the incoming amount of fluid from the first port 124. By intersecting the first longitudinal port 143, the first traverse port 141 provides the incoming amount of fluid to the first longitudinal port 143 that then directs the fluid to the fluid filter head 106.
  • the second fastener 144 defines a second longitudinal port 145 (e.g., hole, opening, passage, channel, etc.) and a second traverse port 147 (e.g., hole, opening, passage, channel, etc.).
  • the second traverse port 147 intersects the second longitudinal port 145, such that the second traverse port 147 is fluidly coupled to the second longitudinal port 144.
  • the second longitudinal port 145 extends axially substantially through the second fastener 144. In one embodiment, the second longitudinal port 145 extends substantially from (e.g., at or near) the second traverse port 147 through an end of the second fastener 144.
  • the second longitudinal port 145 is structured to receive an outgoing amount of fiuid from the fluid filter head 106.
  • the second traverse port 147 may have a similar structure and function as the first traverse port 141.
  • the first traverse port 141 extends substantially through a portion of the diameter of the second fastener 144.
  • the second traverse port 147 is structured to receive the outgoing amount of fluid from the second longitudinal port 145 and provide the outgoing amount of fluid to the second port 132.
  • the second traverse port 147 comes into fluid communication with the second port 132 of the second body portion 130.
  • the second traverse port 147 provides the outgoing amount of fluid to the second port 132.
  • the second longitudinal port 145 provides the outgoing amount of fluid from the fluid filter head 106 to the second traverse port 147 and, eventually, the second port 132.
  • FIG. 6 depicts a cross-sectional isometric view of the fluid filter assembly 104, according to one embodiment in which the fluid filter assembly 104 is structured an oil filter assembly.
  • the first port 124 of the first body portion 120 is fluidly coupled to an inlet oil line 107 by at least one of the inlet oil line 107 being inserted directly into the first port 124, attached to the first fluid connector 131, or any other fluid connection method.
  • the first port 124 receives an incoming amount of oil.
  • the first port 124 directs the incoming amount of oil to the first traverse port 141 of the first fastener 142.
  • the oil is directed to the first longitudinal port 143 of the first fastener 142.
  • the first longitudinal port 143 directs the oil into the fluid filter head 106 into a fluid filter head inlet channel 111 to the fluid filter 108. From the fluid filter head inlet channel 111, the oil flows to the fluid filter 108. The fluid filter 108 collects contaminants or debris within the oil. After flowing through the fluid filter 108, the oil is directed to the fluid filter outlet channel 113.
  • the second longitudinal port 145 of the second fastener 144 receives the oil from the fluid filter head outlet channel 113. The oil is then directed to the second traverse port 147 and eventually the second port 132.
  • the sensor 134 is located on the web 126.
  • the sensor 134 may determine the pressure differential between the inlet and outlet oil flow across the fitting 110.
  • the measured pressure differential may substantially represent the pressure differential across the fluid filter head 106 including the fluid filter 108.
  • the measured pressure differential may be used by a system diagnostic system to monitor the condition of the fluid filter 108.
  • the terms are intended to be broad terms and not terms of limitation.
  • the term "interconnected” shall mean the joining of two members directly or indirectly to one another. Such joining may be achieved with the two members or the two members and any additional intermediate members being integrally formed as a single unitary body with one another or with the two members or the two members and any additional intermediate member being attached to one another. Such joining may be permanent in nature or alternatively may be removable or releasable in nature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un raccord pour une tête de filtre de fluide comprenant une première partie de corps et une seconde partie de corps. La première partie de corps définit une première ouverture et un premier orifice pour recevoir une quantité de fluide entrant. La seconde partie de corps définit une seconde ouverture et un second orifice pour recevoir une quantité de fluide sortant. Le raccord comprend en outre une bande reliant la première partie de corps à la seconde partie de corps, et un capteur de pression conçu pour mesurer un différentiel de pression entre la quantité de fluide entrant et la quantité de fluide sortant.
PCT/US2014/066412 2014-11-19 2014-11-19 Elément de détection de pression différentielle pour des raccords d'orifice de pression WO2016080984A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2014/066412 WO2016080984A1 (fr) 2014-11-19 2014-11-19 Elément de détection de pression différentielle pour des raccords d'orifice de pression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2014/066412 WO2016080984A1 (fr) 2014-11-19 2014-11-19 Elément de détection de pression différentielle pour des raccords d'orifice de pression

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WO2016080984A1 true WO2016080984A1 (fr) 2016-05-26

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34610E (en) * 1990-11-19 1994-05-17 Keystone International Holdings Corp. Mounting means for fluid pressure transmitters
US6279401B1 (en) * 1994-08-22 2001-08-28 Foxboro Company Differential pressure transmitter
US20120279911A1 (en) * 2011-05-03 2012-11-08 Cofini Michael E Fluid filter assembly with sight glass
CA2820013A1 (fr) * 2013-06-28 2013-09-16 Westport Power Inc. Module de commande de la pression du carburant dans un moteur a combustion interne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE34610E (en) * 1990-11-19 1994-05-17 Keystone International Holdings Corp. Mounting means for fluid pressure transmitters
US6279401B1 (en) * 1994-08-22 2001-08-28 Foxboro Company Differential pressure transmitter
US20120279911A1 (en) * 2011-05-03 2012-11-08 Cofini Michael E Fluid filter assembly with sight glass
CA2820013A1 (fr) * 2013-06-28 2013-09-16 Westport Power Inc. Module de commande de la pression du carburant dans un moteur a combustion interne

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