EP0604410A1 - Filtre et separateur pour du carburant diesel dotes d'une pompe de suralimentation contournable - Google Patents

Filtre et separateur pour du carburant diesel dotes d'une pompe de suralimentation contournable

Info

Publication number
EP0604410A1
EP0604410A1 EP91913210A EP91913210A EP0604410A1 EP 0604410 A1 EP0604410 A1 EP 0604410A1 EP 91913210 A EP91913210 A EP 91913210A EP 91913210 A EP91913210 A EP 91913210A EP 0604410 A1 EP0604410 A1 EP 0604410A1
Authority
EP
European Patent Office
Prior art keywords
pump
fluid
fuel
filter
valve
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Withdrawn
Application number
EP91913210A
Other languages
German (de)
English (en)
Other versions
EP0604410A4 (fr
Inventor
Houston Winn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WINN-COLEMAN Inc
Original Assignee
WINN-COLEMAN 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 WINN-COLEMAN Inc filed Critical WINN-COLEMAN Inc
Publication of EP0604410A1 publication Critical patent/EP0604410A1/fr
Publication of EP0604410A4 publication Critical patent/EP0604410A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/003—Filters in combination with devices for the removal of liquids
    • B01D36/005—Liquid level sensing means, e.g. for water in gasoil-filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/04—Breaking emulsions
    • B01D17/045—Breaking emulsions with coalescers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/003—Filters in combination with devices for the removal of liquids
    • 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
    • F02M37/24—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
    • F02M37/26—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means
    • F02M37/28—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means with means activated by the presence of water, e.g. alarms or means for automatic drainage
    • 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
    • F02M37/44—Filters structurally associated with pumps
    • 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
    • F02M37/54—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by air purging means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • 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

Definitions

  • the present invention relates to an apparatus for filtering fuel used in internal combustion engines. More particularly, the present invention relates to apparatus that separates air and water contaminants from the fuel. Background Art
  • the diesel engine is an internal combustion engine that differs from the gasoline engine principally in that it relies on heat generated by compressing air in a cylinder to ignite the fuel, rather than on an electric spark. To generate the required heat, the diesel must produce higher compression than the gasoline engine, thereby making it bulkier, heavier and more expensive.
  • the diesel engine also operates more cheaply, on less highly refined fuel, which can give it an advantage in transportation and construction-equipment applications such as locomotives, trucks, tractors, buses, bulldozers, graters, and other heavy-duty machines, and in marine propulsion.
  • SHEET never exceeds the pressure obtained by the compression of the air.
  • the piston continues to move away from the cylinder head in its downward or expansion stroke (power) ; (4) the burned fuel is forced from the cylinder by upward motion of the piston (exhaust) .
  • Diesel took out patents on an engine to operate on the cycle just described. Either powdered coal or liquid petroleum would be used as fuel. Diesel planned to use compressed air to introduce the coal dust into the engine cylinder but found it difficult to control the rate of injection so that the maximum pressure in the cylinder after ignition would not exceed a safe limit. After the experimental engine was wrecked by an explosion in the cylinder, Diesel gave up the idea of using the coal dust and devoted his efforts to the use of liquid petroleum.
  • the first commercial engine built on Diesel's patents was installed in St. Louis, Missouri by brewer, Adolphus Busch, who had seen one on display at an exposition in Kunststoff and had purchased a license from Diesel for the manufacture and sale of the engine in the United States and Canada.
  • the engine operated successfully for many years and was the forerunner of the Busch- Sulzer engine that powered many submarines in the U.S. Navy in World War I.
  • the diesel engine was economical in the use of fuel and it proved itself reliable under wartime conditions. Diesel fuel, less volatile than gasoline, was more easily stored and handled.
  • a diesel engine is started by driving it from some external power source until conditions have been established under which the engine can be run under its own power. The most positive starting method is by admitting air at 250 to 350 p.s.i.
  • the first was a volatile distillate recommended for high-speed engines with frequent and wide variations in load and speeds; the second, a distillate for high-speed engines in services with high loads and uniform speeds; and the third, a fuel for low- and medium-speed engines in services with sustained
  • Fuels with a high carbon residue can be handled best by engines of low-speed rotation. The same applies to those with
  • the octane number which defines the ignition quality of a fuel, is ascertained by adjusting a mixture of octane and alpha-methyl-naphthalene until it has the same ignition quality as the fuel being tested. The percentage of octane in this mixture is then the octane number of the fuel
  • the owner of the vehicle will be unlikely to take the necessary steps to remove the accumulation of water from the fuel chamber.
  • the diesel vehicle will be disabled 115 because of the accumulation of water in the fuel chamber. Under these circumstances, the owner of the vehicle will incur large maintenance fees and will have a diesel vehicle that is inoperable until proper repair is implemented.
  • U.S. patent number 2,503,566 issued to A.S.B. Scott on April 11, 1950 teaches a filter with a mechanical valve that can drain water from a tank. This allows the sump of a filter to be cleaned and flushed without dismantling the filter.
  • U.S. patent number 4,224,157 issued September 23, 1980 to K.K. Jain teaches a particulate to filter.
  • U.S. patent number 4,321,136 issued March 23, 1982 to . Matsui for a fuel filtering device teaches the use of sensors to heat fuel to prevent the build-up of wax.
  • U.S. patent number 4,437,986 issued on March 20, 1984 to Charles Hutchins, et. al. teaches a separating device for separating water from a liquid mixture which uses an annular coalescing medium. This invention also teaches temperature control to prevent wax build-up and provides for a pressure 135 bypass to allow the liquid to bypass the filter after a set pressure across the filter element is reached.
  • U.S. patent number 4,539,109 issued September 3, 1985 to L.L. Davis for drain system for fuel processor apparatus teaches the use of an automatic control means to control the separation 140 of water from fuel.
  • Davis teaches a sensing means for detecting the presence for predetermined amount of water or other impurities and a electrically controlled drain means to maintain the water or other impurities below a predetermined level.
  • Davis also teaches a heater means to prevent wax build-up.
  • U.S. patent number 4,637,351 issued January 20, 1987 to B.J. Pakula for a system for removal of water from diesel fuel systems, teaches the use of a solenoid operated valve to allow the discharge of water from a gravity fuel separator.
  • Another object of the present invention is to provide a fuel filter, separator and boost pump that reduces engine maintenance requirements.
  • the present invention is a fuel filter and separator including a boost pump that comprises a chamber, a discharge valve, a fuel pump and a fuel filter.
  • the discharge valve is 185 electrically operatable and is connected to an electronic control ifieans. These electronics are also connected to a water sensor in the lower part of the filter chamber.
  • the fuel pump is connected to the fuel filter through check valves that allow fuel to flow through the pump when the pump is operating and allow 190 fuel to flow directly into the inlet of the filter when the pump is not operating.
  • the discharge valve for the selective discharge of contaminant fluid from the chamber is connected to the bottom of the filter chamber.
  • the fuel pump typically, is connected to the fuel line of the vehicle.
  • the fuel pump is 195 connected to the fuel line through a check valve.
  • the boost pump of the present invention is capable of generating a higher fluid pressure at its output than the pressure supplied to the boost pump fuel inlet by the fuel pump of the vehicle.
  • its output 200 pressure overcomes the fuel pressure acting on a check valve which closes a fuel bypass line and causes fuel to flow through the boost pump into the fuel filter.
  • the output of the boost pump is in fluid communication with the inlet of the fuel filter.
  • the fuel filter is a commercially 205 available filter that uses a coalescar media, such a the Fram 5000 Series. These filters have an internal filter element housed within a chamber.
  • the chamber which has a threaded drain hole at its bottom.
  • a remotely actuated solenoid valve is attached to the drain opening of the 210 filter.
  • a sensor that detects water level within the chamber is also inserted into the chamber through the drain plug opening. Both the water level sensor and the solenoid actuated valve are connected to electronic control means.
  • the electronic control means allows: 1. the valve to be manually operated to dump the 215 water from the chamber; 2. allows the fuel boost pump to be operated manually to restart the diesel engine if air contaminant has gotten into the fuel line; and 3. allows the automatic operation of the solenoid dump valve when a predetermined level of water is detected in the filter chamber.
  • Figure 1 is a block diagram showing the present invention within the fuel system of an internal combustion engine.
  • Figure 2 is a front view of the boost pump and filter apparatus of the present invention shown in partial cross 225 sectional cut away.
  • FIG. 3 is a detail of the pump section of the present invention showing the check valves and fuel bypass channel.
  • Figure 4 is a block diagram of the electric control means of the present invention.
  • 230 Figure 5 is the schematic diagram of the electronic control circuit of the present invention.
  • Figure 1 shows a functional block diagram of the present invention in a fuel system for a diesel engine.
  • Fuel tank 101 is connected by fuel line 103 to an in-line disposable filter 105.
  • This is typically either a 2 1/2" or 5" disposable cartridge filter that removes gross particulate matter from the fuel flow. This filter does not remove fine particulate matter or liquid impurities, such as water from the fuel.
  • 240 output of disposable filter 105 is in fluid communication through fuel line 107 with boost pump filter separator 109.
  • the output of the present invention, 109 is in fluid communication through fuel line 111 with the main fuel pump 113 of the system.
  • the outlet of fuel pump 113 is in fluid communication
  • the present invention may be located downstream from the fuel pump, as shown in Figure 1 or upstream from the fuel pump.
  • 255 it may also be used to remove impurities and water from the fuel flow to a gasoline engine.
  • Figure 2 shows a front partially cut away view of the mechanical structure of the present invention.
  • Pump section 201 provides a cast aluminum pump housing 207.
  • Housing 207 has a bottom plate 209 which is drilled and tapped to provide a fuel passage 211 from a threaded inlet 213 to the
  • Channel 211 is maintained in a hematic sealing engagement 275 with the interior of pump 219 by o-ring seals 227.
  • Ball valve 223 is held normally shut by bias spring 225.
  • ball valve 223 moves to the open position shown at 229, which allows the fuel to flow into the pump and fuel bypass
  • Motor 219 is hermetically sealed to the top portion of chamber 207 by means of o-ring seal 231.
  • the electric motor of pump 219 is connected through electrically insulated connectors
  • housing 207 The upper part of housing 207 is provided with a fluid flow passageway 235 which is sealed at one end by threaded plug 237. Passageway 235 is in fluid communication with the fluid input of pump 219.
  • Housing 207 of pump assembly 201 is connected by a aluminum manifold 237 to filter section 203.
  • Fuel flow passageway 235 penetrates manifold section 237.
  • Manifold section 237 is also provided with a bracket 239, which is provided with holes 241 for mounting the pump and filter assembly of the present invention
  • Fuel passage 235 is in fluid communication with filter inlet annulus 243.
  • Annulus 243 is in fluid communication with the coalescar media 245 of filter 247.
  • Filter 247 is a commercially available filter such as a Fra Series 5000 fuel filter/water 300 separator. This type of fuel filter allows the fuel to enter by an inlet and then flows the fuel through the filter and coalescar media. The coalescing action forms larger droplets of water as smaller ones come together.
  • the fuel then passes through a silicone treated nylon mesh separator 247.
  • the water droplets 305 249 drop into the bottom of the filter housing 251.
  • the dry fuel then passes through ball check valve 253.
  • the fuel filter has
  • the dry fuel exiting filter through outlet 255 passes into an internal fuel outlet channel is in fluid communication with fuel outlet channel 259 which, in turn, is in fluid communication
  • the filter 247 is provided with a threaded drain plug opening 263.
  • the present invention attaches to this drain plug opening and places in fluid communication with it a fuel dump valve 265, which is an electrically operated solenoid valve.
  • 320 valve assembly of the present invention is equipped with a water level sensor 267 which is capable of detecting water at critical level 269.
  • Figure 3 shows a side view of the pump section 201 of the present invention which shows the valves and fuel bypass passage
  • Figure 3 shows the pump section 201 of the present invention.
  • flow channel 211 is shown to be in fluid
  • bypass channel 307 is sealed by threaded plug 313.
  • All of the walls and passageways of the present invention are preferably but not necessarily made of cast aluminum. The inventor considers all of the machining required by the present
  • fuel enters inlet 213 and is impelled under either atmospheric pressure or the pressure of an external fuel pump to open check valve 223 into position 229, thus allowing the 345 flow of fuel through bypass channel 303 to main bypass channel 307 and then through check valve 309 and out of the main fuel passageway 235.
  • the fuel then passes into the filter 247 through annulus 243.
  • the fuel and water are separated by the passage through coalescar medium 245.
  • the water accumulates at the 350 bottom 251 of filter chamber 247.
  • the water level is sensed by sensor 267.
  • the electronic control means operates electrical solenoid valve 265 and causes the water to be dumped.
  • FIG. 4 is an block diagram of the control means of the present invention.
  • control electronics 401 are connected to a source of electrical power 403 through power line 405.
  • control electronics accepts an input from sensor 267 and also an input from control switches 407.
  • the control electronics actuate the water dump valve 265 and the boost fuel pump 219.
  • FIG. 5 is a detailed electrical schematic of the electronic control means of the present invention. This 370 schematic may be read by anyone having ordinary skill in the art of electronics and thus will not be described further.
  • the control switch 407 may be actuated to manually dump water from the present invention or to manually operate the pump to allow a engine which has run out of fuel or has impurities in 375 its fuel line to purge the fuel line.
  • the control switch may be set in an automatic mode which allows sensor 267 to control when water is dumped by the system.
  • control electronics runs the pump for 4 seconds to overcome the negative
  • the present invention is capable of allowing fuel to flow without any restriction through the filter and still is capable of allowing a boost pump to be used to purge the filter or purge the fuel line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Filtration Of Liquid (AREA)

Abstract

Appareil constitué d'un filtre à carburant diesel et d'une pompe de suralimentation, qui comprend une chambre de filtrage (203), un filtre à carburant diesel (247) situé à l'intérieur de la chambre, et une pompe à carburant diesel (201) située à l'extérieur de la chambre. Ladite chambre est dotée d'une vanne de décharge (265) actionnée à distance, montée sur son fond. La pompe à carburant diesel communique avec l'entrée du filtre à carburant diesel au moyen de soupapes (223, 309). Lorsque la pompe à carburant diesel n'est pas en fonctionnement, ces soupapes poussent le flux de carburant à contourner la pompe et à pénétrer directement dans l'entrée du filtre. Un détecteur d'eau (267) détecte l'eau présente dans la chambre de filtrage. La vanne magnétique de décharge actionnée à distance est mise en marche lorsque le détecteur d'eau détecte un niveau d'eau critique (269) dans la chambre.
EP91913210A 1991-07-19 1991-07-19 Filtre et separateur pour du carburant diesel dotes d'une pompe de suralimentation contournable. Withdrawn EP0604410A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1991/004995 WO1993001874A1 (fr) 1991-07-19 1991-07-19 Filtre et separateur pour du carburant diesel dotes d'une pompe de suralimentation contournable

Publications (2)

Publication Number Publication Date
EP0604410A1 true EP0604410A1 (fr) 1994-07-06
EP0604410A4 EP0604410A4 (fr) 1995-03-29

Family

ID=22225676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91913210A Withdrawn EP0604410A4 (fr) 1991-07-19 1991-07-19 Filtre et separateur pour du carburant diesel dotes d'une pompe de suralimentation contournable.

Country Status (2)

Country Link
EP (1) EP0604410A4 (fr)
WO (1) WO1993001874A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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KR100851443B1 (ko) * 2001-03-30 2008-08-08 파커-한니핀 코포레이션 우회 밸브를 구비한 연료 필터

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GB9313285D0 (en) * 1993-06-28 1993-08-11 Zeneca Ltd Acid derivatives
US5922199A (en) * 1993-09-15 1999-07-13 Parker Hannifin Corporation Double pass fuel filter assembly
US5507942A (en) * 1994-02-22 1996-04-16 Davco Manufacturing L.L.C. Fuel filter assembly
US5534161A (en) * 1994-12-16 1996-07-09 Cummins Engine Company, Inc. Automatic water drain and priming pump for fuel systems
US5880674A (en) * 1997-05-12 1999-03-09 Cummins Engine Company, Inc. System for processing output signals associated with multiple vehicle condition sensors
GB2338990A (en) * 1998-06-30 2000-01-12 Cummins Engine Co Ltd Fuel pump and filter assembly for an engine
IT1316849B1 (it) * 2000-03-24 2003-05-12 Sogefi Filtration Spa Filtro per carburante per motori diesel
FR2829703B1 (fr) * 2001-09-19 2004-03-05 Delphi Tech Inc Dispositif de separation de l'eau contenue dans du gazole destine a alimenter un moteur diesel
GB0216115D0 (en) 2002-07-11 2002-08-21 Parker Hannifin U K Ltd Self-venting solenoid drain valves
EP2483549B1 (fr) * 2009-10-02 2014-06-11 General Electric Company Procédé et système de vidange d'eau automatique dans un système d'alimentation
CN103285657A (zh) * 2013-07-01 2013-09-11 昆山威胜达环保设备有限公司 电荷式真空滤油机
BR112017027439B1 (pt) 2015-06-19 2022-05-24 Parker-Hannifin Corporation Conjunto de circulação de fluido e método de fornecimento de energia elétrica a um conjunto de bomba acionado por motor em um aparelho de circulação de fluido
DE102018201740A1 (de) 2018-02-05 2019-08-08 Mahle International Gmbh Flüssigfiltereinrichtung

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US4500425A (en) * 1984-06-13 1985-02-19 Allied Corporation Pump valve for liquid separator

Non-Patent Citations (2)

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No further relevant documents disclosed *
See also references of WO9301874A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100851443B1 (ko) * 2001-03-30 2008-08-08 파커-한니핀 코포레이션 우회 밸브를 구비한 연료 필터

Also Published As

Publication number Publication date
WO1993001874A1 (fr) 1993-02-04
EP0604410A4 (fr) 1995-03-29

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