EP3914812A1 - Culasse - Google Patents

Culasse

Info

Publication number
EP3914812A1
EP3914812A1 EP20701133.9A EP20701133A EP3914812A1 EP 3914812 A1 EP3914812 A1 EP 3914812A1 EP 20701133 A EP20701133 A EP 20701133A EP 3914812 A1 EP3914812 A1 EP 3914812A1
Authority
EP
European Patent Office
Prior art keywords
cylinder head
internal combustion
combustion engine
oil
fuel rail
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
EP20701133.9A
Other languages
German (de)
English (en)
Other versions
EP3914812B1 (fr
Inventor
Alfred Inden
Daniel Bertram
Gerald Leyh
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.)
Deutz AG
Original Assignee
Deutz 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 Deutz AG filed Critical Deutz AG
Publication of EP3914812A1 publication Critical patent/EP3914812A1/fr
Application granted granted Critical
Publication of EP3914812B1 publication Critical patent/EP3914812B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0002—Cylinder arrangements
    • F02F7/0004—Crankcases of one-cylinder engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0021—Construction
    • 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
    • F01M2013/0433—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a deflection device, e.g. screen
    • 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
    • F01M2013/0461—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a labyrinth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames

Definitions

  • the invention relates to an internal combustion engine with a pre-separation chamber for oil aerosol separation
  • crankcase ventilation In engine developments, the crankcase ventilation must be given adequate space.
  • crankcase ventilation system is used to separate oil-containing components (aerosols) from the leakage gas volume that is inevitable due to the system, which get into the crankcase via piston rings, ATL seals and valve stem seals, and from there must be drained off using appropriate oil separators.
  • Oil separators of internal combustion engines have the task of cleaning the oil-gas mixture located in the crankcase by separating the oil droplets from this mixture and returning them to the oil sump in the oil pan, while guiding gases into the suction area.
  • the oil separator is connected at its entrance to the crankcase and at its exit to the intake area.
  • An oil separator of the type mentioned above is known for example from DE 4239108 A1.
  • return lines are provided there, which are located below the oil level in the oil sump of the oil pan.
  • DE 4017074 A1 discloses a pressure control valve for crankcase ventilation on an internal combustion engine, this pressure control valve being arranged in combination with a filler opening for engine oil and an oil dipstick.
  • This combination is characterized by the fact that it saves space and centrally connects all components that affect the oil supply and monitoring of an internal combustion engine. This combination is further characterized by the fact that only a single connection to the engine block is required, through which the oil to be filled in or the oil flowing back from the pressure control valve is fed to the oil pan and also receives the oil dipstick.
  • DE 2103061 shows a device for returning gases from the engine housing of an internal combustion engine into its gas introduction system.
  • DE 19914166 shows a rotary oil separator for cleaning the gas contained in the crankcase of an internal combustion engine, in particular a self-igniting internal combustion engine.
  • crankcase gas Crankcase ventilation gas or blow-by gas, hereinafter referred to as crankcase gas, is gas which passes through the piston rings and into the crankcase during engine operation.
  • the absorbed oil must be removed from this crankcase gas and the cleaned crankcase gas is then fed in particular to the combustion air.
  • the oil separation from the crankcase gases takes place today mainly with the help of separators, which consist of a knitted fabric or with the help of jet deflections on baffle plates or a combination of both processes.
  • the separation efficiency achievable with the previous separators is not effective enough for future engines. Therefore, ultra-fine filters, possibly also as easy-change filter systems, will be used.
  • these have the disadvantage that, due to the principle, they work with a high differential pressure and thus lead to tightness problems on the engine.
  • the invention has for its object to provide an internal combustion engine which avoids the disadvantages mentioned above.
  • an internal combustion engine comprising at least one cylinder crankcase, at least one cylinder head with at least one valve cover, with gas exchange valves, valve train, injectors, injector wiring harness, and injection valve in the cylinder head. Pipes, fuel rail and a pre-separator for separating the oil aerosols contained in the blow-by volume flow are arranged.
  • An advantage according to the invention here is the compact design, the reduction of components, the combination of functions, the minimization of the number of components of the overall system, the reduction of leakage possibilities by reducing the interface, minimizing the installation effort by the assembly and the reduction of lines in the Engine periphery.
  • the cylinder head closes off the combustion chamber at the top.
  • intake and exhaust valves as well as injection nozzles or injectors, via which the fuel is injected into the combustion chamber.
  • the valve train and the control of the injectors are attached to the cylinder head and housed by the valve cover via a corresponding wiring harness.
  • FIG. 2 shows a longitudinal section through the cylinder head from FIG. 1,
  • FIGS. 1 and 2 without valve hood
  • Fig. 4 shows an alternative cross section through the cylinder head of the internal combustion engine.
  • the internal combustion engine has a cylinder head 2 and a valve cover 1.
  • gas exchange valves, valve train, injectors, injector wiring harness, injection lines 4, fuel rail 5 and a pre-separator for separating the oil aerosols contained in the blow-by volume flow are arranged.
  • the installation space provided for the fuel rail is simultaneously used as a pre-separator for the oil sol separation, as is shown in FIG. 1.
  • the installation space d surrounding the fuel rail 5 serves as a calming space for agglomeration or coagulation of the oil drops.
  • the installation space for mounting the rail is separated from the valve gear compartment a by a web b in the cast contour of the cylinder head and an impact wall c integrated in the valve cover.
  • the gas transfer from the valve drive chamber a into the fuel rail space or calming chamber d takes place via the passages h necessary for carrying out the high-pressure lines 4 of the injectors 3.
  • FIG. 2 shows a cylinder head 2 and a valve cover 1 of the internal combustion engine.
  • gas exchange valves, valve train, injectors, injector wiring harness, injection lines 4, fuel rail 5 and a pre-separator for separating the oil aerosols contained in the blow-by volume flow are arranged.
  • the installation space provided for the fuel rail 5 is simultaneously used as a pre-separation space for the oil sol separation, as is shown in FIG. 1.
  • the construction space d surrounding the fuel rail 5 serves as a calming space for agglomeration or coagulation of the oil drops.
  • the installation space for mounting the rail is separated from the valve drive compartment a by a web b in the cast contour of the cylinder head and an impact wall c integrated in the valve cover.
  • the gas transfer from the valve drive chamber a into the fuel rail space or calming chamber d takes place via the passages h necessary for carrying out the high-pressure lines 4 of the injectors 3.
  • FIG. 3 shows a top view of the cylinder head 2 from FIGS. 1 and 2 without a valve cover.
  • the cylinder head 2 there are gas exchange valves, valve train, injectors, injector wiring harness, injection lines 4, fuel rail 5 and a pre-separator for separating the blow-by volume flow Oil aerosols arranged.
  • the installation space provided for the fuel rail is simultaneously used as a pre-separator for the oil sol separation, as is shown in FIG. 1.
  • the construction space d enclosing the fuel rail 5 serves as a calming space for agglomeration or coagulation of the oil drops.
  • the installation space for mounting the rail is separated from the valve train compartment by a web b in the cast contour of the cylinder head and an impact wall c integrated into the valve cover.
  • the gas transfer from the valve drive chamber a into the fuel rail space or calming space d takes place via the passages h necessary for carrying out the high-pressure lines 4 of the injector 3.
  • the separated amount of oil is discharged through a drainage option i through the crankcase into the oil pan.
  • FIG. 4 shows an internal combustion engine which has a cylinder head 2 and a valve cover 1.
  • Gas exchange valves, valve train, injectors, injector wiring harness, injection lines 4, fuel rail 5 and a pre-separator for separating the oil aerosols contained in the blow-by volume flow are arranged in the cylinder head 2.
  • the installation space provided for the fuel rail is simultaneously used as a pre-separator for the oil sol separation, as is shown in FIG. 1.
  • the installation space d surrounding the fuel rail 5 serves as a calming space for agglomeration or coagulation of the oil drops.
  • the installation space for mounting the rail is separated from the valve train compartment by a web b in the cast contour of the cylinder head and an impact wall c integrated into the valve cover.

Landscapes

  • 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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un moteur à combustion interne qui comprend au moins un carter de moteur, au moins une culasse (2) pourvu d'au moins un chapeau de soupape (1). Des soupapes d'échange de gaz, une commande de soupape, des injecteurs (3), un faisceau de câbles d'injecteur, des conduites d'injection (4), une rampe de distribution de carburant (5) et un pré-séparateur destiné à séparer les aérosols d'huile contenus dans le flux volumique de fuite des gaz sont disposés dans la culasse (2).
EP20701133.9A 2019-01-23 2020-01-08 Culasse Active EP3914812B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019000498.1A DE102019000498A1 (de) 2019-01-23 2019-01-23 Zylinderkopf
PCT/EP2020/000004 WO2020151903A1 (fr) 2019-01-23 2020-01-08 Culasse

Publications (2)

Publication Number Publication Date
EP3914812A1 true EP3914812A1 (fr) 2021-12-01
EP3914812B1 EP3914812B1 (fr) 2023-12-06

Family

ID=69177129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20701133.9A Active EP3914812B1 (fr) 2019-01-23 2020-01-08 Culasse

Country Status (5)

Country Link
US (1) US20220074328A1 (fr)
EP (1) EP3914812B1 (fr)
CN (1) CN113272531B (fr)
DE (1) DE102019000498A1 (fr)
WO (1) WO2020151903A1 (fr)

Family Cites Families (37)

* Cited by examiner, † Cited by third party
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DE423791C (de) 1924-06-11 1926-01-11 Bayerische Motoren Werke A G F Vorrichtung zur Entlueftung des Kurbelgehaeuses von Verbrennungskraftmaschinen
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FR2075754A5 (fr) 1970-01-30 1971-10-08 Alfieri Maserati Officin
JPS5822404U (ja) * 1981-08-04 1983-02-12 株式会社クボタ エンジンのブロ−バイガス燃焼室還元装置
US4593659A (en) * 1985-06-28 1986-06-10 Cummins Engine Company, Inc. Engine valve cover
DE4017074A1 (de) 1990-05-26 1991-11-28 Mann & Hummel Filter Druckregelventil fuer die kurbelgehaeuseentlueftung an einer brennkraftmaschine
JP3166335B2 (ja) * 1992-10-08 2001-05-14 株式会社豊田自動織機製作所 内燃機関用の圧縮液化式オイルミスト凝結分離装置
DE4239108A1 (de) 1992-11-20 1994-05-26 Opel Adam Ag Vorrichtung zur Entlüftung des Kurbelgehäuses einer Brennkraftmaschine mit V-förmig angeordneten Zylindern
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SE512108C2 (sv) 1997-04-29 2000-01-24 Volvo Lastvagnar Ab Förbränningsmotor med en ventilationsanordning för att släppa ut förbränningsgaser från vevhuset
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Also Published As

Publication number Publication date
EP3914812B1 (fr) 2023-12-06
DE102019000498A1 (de) 2020-07-23
WO2020151903A1 (fr) 2020-07-30
CN113272531B (zh) 2023-09-01
US20220074328A1 (en) 2022-03-10
CN113272531A (zh) 2021-08-17

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