EP3325796A1 - Moteur à combustion interne et procédé d'identification d'une fuite provenant d'un système de mise à l'air libre d'un carter de vilebrequin et/ou d'un réservoir - Google Patents

Moteur à combustion interne et procédé d'identification d'une fuite provenant d'un système de mise à l'air libre d'un carter de vilebrequin et/ou d'un réservoir

Info

Publication number
EP3325796A1
EP3325796A1 EP16730333.8A EP16730333A EP3325796A1 EP 3325796 A1 EP3325796 A1 EP 3325796A1 EP 16730333 A EP16730333 A EP 16730333A EP 3325796 A1 EP3325796 A1 EP 3325796A1
Authority
EP
European Patent Office
Prior art keywords
pressure
line
sensor
check valve
internal combustion
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.)
Granted
Application number
EP16730333.8A
Other languages
German (de)
English (en)
Other versions
EP3325796B1 (fr
Inventor
Robert Biebl
Jessica Golladay
Markus Haslbeck
Stephan RENNER
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3325796A1 publication Critical patent/EP3325796A1/fr
Application granted granted Critical
Publication of EP3325796B1 publication Critical patent/EP3325796B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10373—Sensors for intake systems
    • F02M35/1038—Sensors for intake systems for temperature or pressure
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • F01M13/023—Control valves in suction conduit
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/028—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of positive pressure
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0809—Judging failure of purge control system
    • F02M25/0827—Judging failure of purge control system by monitoring engine running conditions
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/089—Layout of the fuel vapour installation
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M2013/0038—Layout of crankcase breathing systems
    • F01M2013/0044—Layout of crankcase breathing systems with one or more valves
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M2013/026—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with pumps sucking air or blow-by gases from the crankcase
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M2013/027—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with a turbo charger or compressor
    • 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
    • F01M2250/00—Measuring
    • F01M2250/60—Operating parameters
    • 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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold

Definitions

  • the invention relates to an internal combustion engine with the features of the preamble of patent claim 1 and a method for detecting a leakage of a crankcase and / or a tank-venting system with the features of claim 6.
  • one or a common check valve is arranged directly at the connection points in each case.
  • Intake air line to be initiated. This is to prevent that it comes as a result of the release of the compounds at the connection points or leakage to an undesirable pollutant emission of unburned hydrocarbons in the environment. While monitoring the connection points of the tank and / or crankcase ventilation line and the lines that open behind the throttle in the intake air line and in the suction mode for supplying the venting gases in the
  • the present invention has the object to show an internal combustion engine, with a simple and inexpensive leakage of a crankcase and / or a tank ventilation system can be detected.
  • a diagnostic device is provided for the detection of a leakage according to claim 3.
  • This may also be an electronic control unit.
  • Figure 1 shows a schematic representation of an inventive
  • FIG. 2 shows a schematic representation of the invention
  • FIG. 3 shows a schematic representation of the invention
  • FIG. 4 shows a logic of a leakage diagnosis in a table.
  • FIG. 1 shows a schematic representation of an internal combustion engine 1 according to the invention with, for example, four drawn cylinders 1 ' shown by circles, with a combustion air intake system 2, in which a compressor 3, for example an exhaust gas turbocharger or a mechanical compressor, in the flow direction of a combustion air ( represented by an arrow in the compressor) behind a throttle element 4, such. B. a throttle valve are arranged.
  • the physical separation of the tank ventilation system 5 and the crankcase ventilation system 6 is shown schematically by arrows.
  • the tank ventilation system 5 can be connected via a first check valve 7 with a first line 8 to the intake system 2 in the flow direction of the intake air downstream of the throttle element 4.
  • the tank venting system 5 via a second and a third check valve 9, 10 in a second line 11 with the intake 2 before the compressor 3 can be connected.
  • the crankcase ventilation system 6 is connectable via a fourth check valve 12 in a third line 13 to the intake system 2 after the throttle element 4 and via a fourth line 14 and the third check valve 10 with the intake system 2 in front of the compressor 3.
  • the second line 11 and the fourth line 14 share the common third check valve 10.
  • this can also be provided for two separate lines, each with a check valve.
  • the intake system 2 is connectable to the throttle element 4 via a fifth check valve 15 in a fifth line 16 to the second line 11 at a line transition between the second line 1 1 and the second part line 11 ', wherein at the line transition of the fifth line 16 in the second line 1 1 and the second part line 11 ', a nozzle 17, preferably a Laval nozzle, is formed, in which the second line 11 to the second check valve 9 opens, wherein between the second check valve 9 and the nozzle 17 in the second Line 11, a first pressure sensor 18 for measuring the pressure in the second line 1 1 is provided.
  • a leakage in the tank ventilation system 5 or in the crankcase ventilation system 6 can be detected in a simple manner with a single pressure sensor, the model pressure always representing a fault-free system.
  • a second pressure sensor 19 for measuring the pressure in the second part line 11 'or the fourth line 14 is provided after the nozzle 17 in the second line 11 or the fourth line 14.
  • the pressure evaluation of the pressure sensors 18, 19 is again preferably carried out by the diagnostic apparatus 20.
  • Diagnostic device 20 Leakage in the tank ventilation system 5.
  • an oil separator 23 is provided to safely prevent the influx of oil mist into the combustion air intake system 2.
  • Tank vent valve 22 is provided in the first conduit 8 between the tank 21 and the first and second check valves 7, 9 to control the tank venting as needed.
  • Throttle element which may be a volume flow or pressure control valve, a desired crankcase pressure is set.
  • FIG. 2 again shows the internal combustion engine 1 according to the invention from FIG. 1, with the pressure ratios and flow conditions in FIG. 1, with the pressure ratios and flow conditions in FIG. 1
  • crankcase vent gases first pass through the oil separator 23 and then into the third conduit 13 via the fourth check valve 12
  • Combustion air intake system 2 out. These flow conditions are adjusted by the fact that there is a negative pressure in the combustion air intake system 2 after the compressor 3, since the pistons, not shown, in the cylinders V act like a vacuum pump.
  • FIG. 3 shows the internal combustion engine 1 according to the invention for turbo operation, ie when the compressor 3 compresses the combustion air upstream of the cylinders 1 ' .
  • the compressor 3 compresses the combustion air upstream of the cylinders 1 ' .
  • the Crankcase ventilation gases via the oil separator 23 and the fourth line 14 also via the third check valve 10 in the
  • Combustion air intake system 2 introduced in front of the compressor 3 and from there, together with the tank ventilation gases further transported in the direction of the cylinder V.
  • FIG. 4 shows the logic of the interference signal output by the diagnostic device 20 in a table. If a sensor pressure equals the model pressure, the logic value is 1. If a sensor pressure is not equal to the model pressure, the logic value is 0.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

L'invention concerne un moteur à combustion interne comportant un système d'aspiration d'air de combustion dans lequel sont agencés un compresseur et un élément d'étranglement en aval dans le sens de l'écoulement de l'air de combustion, et comportant un système de mise à l'air libre du réservoir et un système de mise à l'air libre du carter de vilebrequin. Le système de mise à l'air libre du réservoir peut être relié au système d'aspiration en aval de l'élément d'étranglement par l'intermédiaire d'une première valve antiretour dans une première conduite, et peut être relié au système d'aspiration en amont du compresseur par l'intermédiaire d'une deuxième valve antiretour dans une deuxième conduite et d'une troisième valve antiretour dans une deuxième conduite partielle. Le système de mise à l'air libre du carter de vilebrequin peut être relié au système d'aspiration en aval de l'élément d'étranglement par l'intermédiaire d'une quatrième valve antiretour dans une troisième conduite et relié au système d'aspiration en amont du compresseur par l'intermédiaire d'une quatrième conduite et de la troisième valve antiretour. Le système d'aspiration peut être relié en aval de l'élément d'étranglement à la deuxième conduite au niveau d'une jonction entre la deuxième conduite et la deuxième conduite partielle par l'intermédiaire d'une cinquième valve antiretour dans une cinquième conduite. Au niveau de la jonction de la cinquième conduite dans la deuxième conduite et la deuxième conduite partielle est réalisée une buse dans laquelle la deuxième conduite débouche en aval de la deuxième valve antiretour, un premier capteur de pression étant agencé entre la deuxième valve antiretour et la buse dans la deuxième conduite, pour mesurer la pression dans la deuxième conduite. La configuration selon l'invention du moteur à combustion interne muni d'un système de mise à l'air libre du carter de vilebrequin et du réservoir, et le procédé ci-dessus, permettent de n'utiliser qu'un seul capteur pour le diagnostic et l'identification d'une fuite. Un second capteur de pression permet de manière avantageuse la localisation d'une fuite.
EP16730333.8A 2015-07-24 2016-06-14 Moteur a combustion interne et procede de detection de fuite d'un systeme d'evacuation de gaz d'un carter et / ou reservoir Active EP3325796B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015213982.4A DE102015213982A1 (de) 2015-07-24 2015-07-24 Brennkraftmaschine und Verfahren zur Erkennung einer Leckage von einem Kurbelgehäuse- und/oder einem Tank-Entlüftungssystem
PCT/EP2016/063587 WO2017016737A1 (fr) 2015-07-24 2016-06-14 Moteur à combustion interne et procédé d'identification d'une fuite provenant d'un système de mise à l'air libre d'un carter de vilebrequin et/ou d'un réservoir

Publications (2)

Publication Number Publication Date
EP3325796A1 true EP3325796A1 (fr) 2018-05-30
EP3325796B1 EP3325796B1 (fr) 2018-11-07

Family

ID=56137309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16730333.8A Active EP3325796B1 (fr) 2015-07-24 2016-06-14 Moteur a combustion interne et procede de detection de fuite d'un systeme d'evacuation de gaz d'un carter et / ou reservoir

Country Status (5)

Country Link
US (1) US10907591B2 (fr)
EP (1) EP3325796B1 (fr)
CN (1) CN107532544B (fr)
DE (1) DE102015213982A1 (fr)
WO (1) WO2017016737A1 (fr)

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Also Published As

Publication number Publication date
US10907591B2 (en) 2021-02-02
CN107532544B (zh) 2019-09-20
WO2017016737A1 (fr) 2017-02-02
US20180030937A1 (en) 2018-02-01
DE102015213982A1 (de) 2017-01-26
CN107532544A (zh) 2018-01-02
EP3325796B1 (fr) 2018-11-07

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