WO2009059102A2 - Moteur diesel - Google Patents

Moteur diesel Download PDF

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Publication number
WO2009059102A2
WO2009059102A2 PCT/US2008/081950 US2008081950W WO2009059102A2 WO 2009059102 A2 WO2009059102 A2 WO 2009059102A2 US 2008081950 W US2008081950 W US 2008081950W WO 2009059102 A2 WO2009059102 A2 WO 2009059102A2
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
set forth
engine
line
filter
Prior art date
Application number
PCT/US2008/081950
Other languages
English (en)
Other versions
WO2009059102A3 (fr
Inventor
Michael D. Clausen
Original Assignee
Parker Hannifin Corporation
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 Parker Hannifin Corporation filed Critical Parker Hannifin Corporation
Publication of WO2009059102A2 publication Critical patent/WO2009059102A2/fr
Publication of WO2009059102A3 publication Critical patent/WO2009059102A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/22—Water or humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • 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
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying apparatus

Definitions

  • a diesel engine can comprise a fuel system wherein a fuel line extends from a fuel tank to an injection rail adjacent or within the combustion chamber.
  • a fuel filter is usually provided somewhere in the fuel line to remove water from the fuel upstream of the combustion chamber. (See e.g., US7147110.)
  • the fuel- filter-removed water can collect in a sump situated below the filter, and the engine can be provided with a drain system for draining the water from the sump.
  • a drain system for introducing fuel-filter-removed water into an exhaust line, whereby it exits an engine through the exhaust pipe.
  • the fuel-filter- removed water can be directly introduced into the exhaust line, and/or it can be directly introduced into a hydrocarbon-dosing line that connects downstream of the exhaust line.
  • the fuel-filter-removed water does not have to be manually drained by an operator, the fuel-filter-removed water is not drained onto the ground, and the fuel-filter-removed water is not returned to the fuel tank.
  • Figures 1 - 4 are each a schematic diagram of an engine wherein a hydrocarbon dosing system receives fuel from a location upstream of fuel injection.
  • Figure 5 is a schematic diagram of an engine wherein a hydrocarbon dosing system receives fuel from a location downstream of fuel injection.
  • Figures 6A - 6C are schematic diagrams of fuel-filter-removed water being directly introduced into the exhaust line.
  • Figures 6D - 6F are schematic diagrams of some pumping devices to aid introduction of the fuel-filter-removed water into the exhaust line.
  • Figures 7A - 7B are schematic diagrams of fuel-filter-removed water being indirectly introduced into the exhaust line via a hydrocarbon-dosing line.
  • Figure 8 is a schematic diagram of an engine control system.
  • An engine 10 such as the diesel engine schematically shown in Figure 1 , can comprise a combustion system (or chamber) 20, a fuel system 40, an air system 50, and an exhaust system 60.
  • the combustion chamber 20 can comprise an engine block 21 having multiple (e.g., four) cylinders 22 and pistons 23 mounted for linear motion relative thereto.
  • each piston 23 repeatedly travels through an intake stroke, a compression stroke, a power stroke, and an exhaust stroke.
  • Each cylinder 22 has an associated air-intake valve 24 that remains closed except during the intake stroke, and an associated exhaust valve 25 that remains closed except during the exhaust stroke.
  • the pistons 23 are connected to a crankshaft 26 that translates the linear motion produced during a power stroke into rotational movement.
  • the fuel system 40 can comprise a fuel line 41 extending from a fuel tank 42, through a fuel pump 43, through a fuel filter 44, and to a fuel rail 45 within the combustion chamber 20 that feeds fuel injectors 47.
  • a primary role of the fuel filter 44 can be removing water and contaminants from the fuel upstream of the fuel rail 45 and/or combustion chamber 44.
  • the fuel rail 45 holds the pump- pressurized fuel so that the fuel injectors 47 can inject of fuel into each cylinder 22 at the appropriate point in the corresponding piston's stroke cycle (e.g., at the beginning of each power stroke).
  • the fuel pump 43, or another high pressure fuel pump can instead or alternatively be positioned between the fuel filter 44 and the fuel rail 45.
  • the air system 50 comprises an air line 51 extending from an intake pipe 52 to an entrance manifold 53 into the combustion chamber 20.
  • the pipe 52 typically intakes ambient (or near ambient) air at atmospheric pressure and weather-dependent temperature.
  • the air line 51 can include a filter 54, a compressor 55, and a throttle 56.
  • a flow meter 57 can be installed in the air line 51 (e.g., near the inlet pipe 52) to measure air intake.
  • the exhaust system 60 can comprise an exhaust line 61 extending from an exit manifold 62 (that communicates with the combustion chamber 20 when an exhaust valve 25 is open) to an exhaust pipe 63.
  • the illustrated engine 10 has a turbocharger design, with a turbine 64 in the exhaust line 61 that lowers exhaust pressure and simultaneously turns the air compressor 55.
  • the exhaust system 60 can further comprise a recirculation line 65 back to the air line 51 and a valve 66 therein to adjust recirculation flow.
  • the exhaust pipe 63 typically exhausts to the environment, whereby the line 61 can include a pretreatment and/or anti-pollution device.
  • This device can include, for example, an oxidation catalyst 67 and a particulate filter 68.
  • the catalyst 67 converts carbon monoxide pollutants into carbon dioxide, and the filter 68 captures carbon particles still suspended in the catalyst-converted exhaust gas.
  • the engine 10 can further comprise a hydrocarbon-dosing system 70 for introducing fuel (i.e., hydrocarbon) to the exhaust line 61.
  • Hydrocarbon-dosing can be done, for example, to regenerate the filter 68, by raising the exhaust temperature above the incineration temperature of potentially-clogging carbon particles. Additionally or alternatively, hydrocarbon-dosing can be done to enhance the performance of the catalyst 67 (or other pretreatment or pollution- preventing device), when the engine 10 is running lean.
  • the hydrocarbon-dosing system 70 can receive fuel from a location upstream of fuel injection (and thus prior to the fuel leaving the fuel line 41 and entering the combustion chamber 20).
  • the system 70 comprises a dosing line 71 extending from the fuel tank 42.
  • the dosing line 71 extends from the fuel line 41 at the discharge side of the fuel pump 44.
  • the dosing line 71 extends from the fuel line 41 downstream of the filter 44.
  • the dosing line 71 extends from the fuel rail 45 (prior to it being injected by the switches 47).
  • the system 70 includes a dosing line 71 , it can also include a valve 72 to control flow therethrough.
  • the hydrocarbon-dosing system 70 can additionally or alternatively receive fuel from a location downstream of fuel injection.
  • the fuel injectors 47 can be used to also inject hydrocarbons into the exhaust gas prior to it exiting into the manifold 62.
  • in-cylinder dosing for example, fuel is injected into the cylinder 22 during the exhaust stroke of the piston 23. As shown schematically in Figure 5, this results in the fuel system 40 and the hydrocarbon-dosing system 70 using the same equipment and components, without the need for a separate dosing line 71 or valve 72.
  • the engine 10 can further comprise a drain system 80 for draining fuel- filter-removed water from a sump 81 associated with (e.g., positioned below) the fuel filter 44 in the fuel line 44.
  • a level indicator 82 (or other water-quantity sensor) can be used to monitor the amount of water within the sump 81.
  • the drain system 80 can include a drain line 83 extending from the sump
  • the drain line 83 is routed so that the fuel-filter-removed water eventually enters the exhaust line 61 and joins with the exhaust gas traveling therethrough. To this end, the drain line
  • 82 can be directly plumbed to the exhaust line (61), and/or it can be routed through a dosing line 72.
  • the drain line 82 is schematically shown connected to the exhaust line 61 in Figures 6A - 6C, whereby drain water is introduced directly to the exhaust gas.
  • the drain water can, for example, be introduced downstream of the filter 68 ( Figure 6A), downstream of the turbine 63 and upstream of the catalyst 67 ( Figure 6B), and/or upstream of the turbine 63 ( Figure 6C).
  • the drain water may desirably lower the final exhaust temperature of the engine 10, but it will not pass through the catalyst 67 or filter 68.
  • the drain water passes through the anti- pollution devices 6B/6C, but it may lower catalyst inlet temperature which may not be desirable during regeneration efforts.
  • the drain system 80 may comprise a pumping device or means for encouraging the introduction of the fuel-filter-removed water into the exhaust line 61.
  • the drain system 80 can include a dedicated pump 85 for this purpose, as shown schematically in Figure 6D.
  • fuel-filter-removed- water introduction occurs downstream of the turbine 63, it may be possible to take advantage of the exhaust pressure to aid in water induction into the line 61.
  • water-pumping vanes 86 can be turned by the turbocharger drive train (e.g., the turbine 63), and/or, as shown in Figure 6F, exhaust bleed can be use as the motive fluid in a venturi device 87.
  • the turbocharger drive train e.g., the turbine 63
  • exhaust bleed can be use as the motive fluid in a venturi device 87.
  • the drain line 82 can additionally or alternatively be plumbed to the hydrocarbon dosing line 71 upstream of its connection to the exhaust line 61 , as shown schematically in Figures 7A and 7B.
  • the hydrocarbon dosing line 71 will be connected to the exhaust line 61 upstream of the catalyst 67, whereby the fuel-filter-removed water will be introduced upstream of the catalyst.
  • the drain line 82 could essentially be the hydrocarbon dosing line 71 , with the water being expelled during normal dosing cycles. This could be accomplished by, for example, the hydrocarbon dosing line 71 being supplied from the bottom of the fuel filter 44, so that any collected water is automatically expelled into the exhaust gas.
  • the engine 10 can further comprise a system 90 for controlling the operation of the engine 10.
  • the control 90 can comprise, for example, a microcomputer (or a plurality of microcomputers having an input interface 91 , a processor 92, and an output interface 93.
  • the input interface 91 can receive engine-operating information through input lines 100
  • the processor 92 can process this input to determine optimum operating conditions
  • the output interface 93 can provide engine-operating instructions through output lines 200.
  • control system 90 can receive input information regarding crankshaft rotation (input line 125), fuel tank level (input line 142), air intake flow (input line 157), exhaust manifold temperature (input line 162), final exhaust temperature (input line 163), post-turbine exhaust temperature (input line 164), post-catalyst temperature (input line 167), filter pressure drop (input line 168), and/or sump water level (input line 182).
  • the control system 90 can provide operating instructions to the air-intake valves 24 (output line 224), the exhaust valves 25 (output line 225), the fuel pump 43 (output line 243), fuel injectors 47 (output line 247), air throttle 56 (output line 256), recirculation valve 66 (output line 266), dosing valve 72 (output line 272), drain valve 84 (output line 284), drain pump 86 (output line 285), and/or drain venture device 87 (output line 287).
  • the control system 90 can be used to initiate introduction of fuel-filter- removed water from the sump 81 into the exhaust line 61.
  • the system 90 can, for example, determine that drainage is necessary based on the water level in the sump 81 (via input line 182).
  • the drain valve 72 can be opened via the output line 272 and, if applicable, the drain pump 85 activated and/or the venturi- device valves 87 adjusted via output lines 285 /287.
  • the control system 90 can time introduction of the fuel-filter-removed water so as to not disturb, and perhaps to enhance, engine operation. For example, if water introduction will have a cooling effect, it can be initiated upon sensing (via input line 163) that final exhaust temperature is above a desirable range. Water introduction could be used to enhance catalyst conversion when deemed appropriate by temperature inputs through line 164 and/or line 167. Additionally or alternatively, water introduction could be coordinated with hydrocarbon dosing and correlated with the opening of dosing valve 72 (via output line 272) or fuel dosing fuel injection (via output line 247). That being said, such elaborate system-control coordination of the drain system 80 with the rest of the engine systems may not be necessary.
  • the control of the drain system 80 could be as simple as metering the sump water into the exhaust line 61 at a predetermined rate and/or preset intervals. Check valves and mechanical thermostats could be used to prevent engine-interrupting issues. Such a simpler incorporation might be desirable if the engine 10 is to be retrofitted with the drain system 80, as it will not require replacement and/or reprogramming of the existing engine control system 90.
  • the draining of fuel-filter-removed water can be controlled by the hydrocarbon-dosing logic of the system 90. For example, if hydrocarbon dosing is needed (e.g., a high pressure drop is sensed across the exhaust filter 68), the drain valve 84 can be opened. As the fuel-filter-removed water is draining through the line 71/82, regeneration may not occur. But the process can be repeated until the drain water is gone (e.g., as measured by sensor 82). The dosing valve 72 can remain closed until water draining is complete (or the fuel injections 47 can delay injecting fuel into the exhaust gas), and thereafter the dosing fuel supplied to cause regeneration of the exhaust filter 68.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un moteur (10) qui comprend un système de vidange (80) pour extraire l'eau séparée par le filtre à carburant et l'introduire dans la conduite d'échappement (61) du moteur. L'eau séparée par le filtre à carburant peut être introduite directement dans la conduite d'échappement (61), et/ou peut être introduite directement dans une conduite de dosage d'hydrocarbure (71) rejoignant ultérieurement la conduite d'échappement (61). Un système de commande (90) permet de régler l'introduction de l'eau éliminée par le filtre à carburant, par exemple par le réglage d'une soupape (84) dans la conduite de vidange (83), ledit système (90) pouvant synchroniser cette introduction de manière à éviter de perturber (et/ou à améliorer) le fonctionnement du moteur.
PCT/US2008/081950 2007-11-01 2008-10-31 Moteur diesel WO2009059102A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98464507P 2007-11-01 2007-11-01
US60/984,645 2007-11-01

Publications (2)

Publication Number Publication Date
WO2009059102A2 true WO2009059102A2 (fr) 2009-05-07
WO2009059102A3 WO2009059102A3 (fr) 2009-07-23

Family

ID=40276024

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/081950 WO2009059102A2 (fr) 2007-11-01 2008-10-31 Moteur diesel

Country Status (2)

Country Link
US (1) US20090113880A1 (fr)
WO (1) WO2009059102A2 (fr)

Cited By (5)

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WO2010099866A1 (fr) * 2009-03-05 2010-09-10 Daimler Ag Dispositif d'alimentation en carburant, et procédé de mise en oeuvre de dispositif d'alimentation en carburant
WO2011113464A1 (fr) * 2010-03-18 2011-09-22 Daimler Ag Système d'amenée de carburant
DE102010019398A1 (de) 2010-05-04 2011-11-10 Daimler Ag Kraftstoffsystem
DE102011121613A1 (de) 2011-12-20 2013-06-20 Daimler Ag Kraftstoffzufuhreinrichtung für eineVerbrennungskraftmaschine
WO2018091297A3 (fr) * 2016-11-18 2018-07-12 Siemens Aktiengesellschaft Procédé de déshumidification d'un consommable, dispositif de déshumidification ainsi que dispositif d'alimentation en consommable

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DE102011078495A1 (de) * 2010-08-09 2012-03-22 Robert Bosch Gmbh System und Verfahren zur Abgasnachbehandlung einer Brennkraftmaschine
CN111779604B (zh) 2015-08-17 2022-07-08 康明斯过滤Ip公司 用于真空侧和压力侧油水分离器的自动排放系统
CN111094736A (zh) 2017-09-26 2020-05-01 康明斯滤清系统知识产权公司 燃料系统的燃料过滤器组件的回流管
CN111212973B (zh) 2017-10-20 2022-08-16 康明斯滤清系统知识产权公司 气体/液体聚结过滤器的自动排放
WO2020060897A1 (fr) * 2018-09-20 2020-03-26 Cummins Filtration Ip, Inc. Soupape de purge automatique côté aspiration auto-suffisante

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