EP3914812A1 - Cylinder head - Google Patents
Cylinder headInfo
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 29
- 239000000446 fuel Substances 0.000 claims abstract description 26
- 239000000443 aerosol Substances 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 10
- 239000007924 injection Substances 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 46
- 239000007789 gas Substances 0.000 description 28
- 238000009434 installation Methods 0.000 description 12
- 230000001914 calming effect Effects 0.000 description 11
- 238000009423 ventilation Methods 0.000 description 5
- 238000005054 agglomeration Methods 0.000 description 4
- 230000002776 aggregation Effects 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019000498.1A DE102019000498A1 (en) | 2019-01-23 | 2019-01-23 | Cylinder head |
PCT/EP2020/000004 WO2020151903A1 (en) | 2019-01-23 | 2020-01-08 | Cylinder head |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3914812A1 true EP3914812A1 (en) | 2021-12-01 |
EP3914812B1 EP3914812B1 (en) | 2023-12-06 |
Family
ID=69177129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20701133.9A Active EP3914812B1 (en) | 2019-01-23 | 2020-01-08 | Cylinder head |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220074328A1 (en) |
EP (1) | EP3914812B1 (en) |
CN (1) | CN113272531B (en) |
DE (1) | DE102019000498A1 (en) |
WO (1) | WO2020151903A1 (en) |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE423791C (en) | 1924-06-11 | 1926-01-11 | Bayerische Motoren Werke A G F | Device for venting the crankcase of internal combustion engines |
DE1476099A1 (en) * | 1964-04-24 | 1969-03-13 | Rockwell Gmbh | Internal combustion engine with valve drive arranged in the cylinder head |
FR2075754A5 (en) | 1970-01-30 | 1971-10-08 | Alfieri Maserati Officin | |
JPS5822404U (en) * | 1981-08-04 | 1983-02-12 | 株式会社クボタ | Engine blow-by gas combustion chamber reduction device |
US4593659A (en) * | 1985-06-28 | 1986-06-10 | Cummins Engine Company, Inc. | Engine valve cover |
DE4017074A1 (en) | 1990-05-26 | 1991-11-28 | Mann & Hummel Filter | PRESSURE CONTROL VALVE FOR THE CRANKCASE VENTILATION ON AN INTERNAL COMBUSTION ENGINE |
JP3166335B2 (en) * | 1992-10-08 | 2001-05-14 | 株式会社豊田自動織機製作所 | Compression liquefaction type oil mist condensation and separation equipment for internal combustion engines |
DE4239108A1 (en) | 1992-11-20 | 1994-05-26 | Opel Adam Ag | Device for venting the crankcase of an internal combustion engine with V-shaped cylinders |
DE4242265C1 (en) * | 1992-12-15 | 1994-08-18 | Goetze Ag | Valve cover |
JP3460468B2 (en) * | 1996-09-27 | 2003-10-27 | 日産自動車株式会社 | Fuel supply piping structure for direct injection diesel engine |
SE512108C2 (en) | 1997-04-29 | 2000-01-24 | Volvo Lastvagnar Ab | Combustion engine with a ventilation device to release combustion gases from the crankcase |
JP2000038915A (en) | 1998-07-23 | 2000-02-08 | Suzuki Motor Corp | Breather chamber structure of internal combustion engine |
JP4158263B2 (en) * | 1999-03-02 | 2008-10-01 | 日産自動車株式会社 | Blowby gas circulation device for internal combustion engine |
DE19914166A1 (en) | 1999-03-29 | 2000-10-05 | Deutz Ag | Oil separator for crankcase venting gases of internal combustion engine, driven by engine lubricating oil flow |
DE19951028A1 (en) * | 1999-10-22 | 2001-04-26 | Volkswagen Ag | Venting device with oil separator for a crankcase of an internal combustion engine |
DE10125404A1 (en) * | 2001-05-25 | 2002-11-28 | Mann & Hummel Filter | Inertial separator for cleaning gas stream has pattern of curved blades to bend gas stream and with sloping collecting surface for impurities |
JP2003172202A (en) * | 2001-12-06 | 2003-06-20 | Aichi Mach Ind Co Ltd | Engine structure |
WO2005084780A1 (en) * | 2004-03-08 | 2005-09-15 | Reinz-Dichtungs-Gmbh | A fluid separation device |
DE102005022415A1 (en) * | 2005-05-14 | 2006-11-23 | Bayerische Motoren Werke Ag | Cylinder head for an internal combustion engine |
DE102005048331A1 (en) * | 2005-10-08 | 2007-04-19 | Daimlerchrysler Ag | Cylinder head for internal combustion engine has inner hood forming one-piece unit with upper bearing parts and upper oil chamber containing gas exchange valves and associated actuating elements |
DE102006012611A1 (en) * | 2006-03-20 | 2007-09-27 | Mahle International Gmbh | Cylinder head of an internal combustion engine |
WO2009116063A2 (en) * | 2008-01-08 | 2009-09-24 | Tata Motors Limited | Cylinder head for two cylinder ic engine |
US8011338B2 (en) * | 2008-09-11 | 2011-09-06 | Ford Global Technologies, Llc | Camcover oil separator |
US8091533B2 (en) * | 2009-03-19 | 2012-01-10 | GM Global Technology Operations LLC | Engine assembly including centrally located fuel rail |
WO2010109483A2 (en) * | 2009-03-23 | 2010-09-30 | Tata Motors Limited | An oil separator for internal combustion engine |
DE102010004805A1 (en) * | 2010-01-16 | 2011-07-21 | GM Global Technology Operations LLC, ( n. d. Ges. d. Staates Delaware ), Mich. | Cylindrical head cover for recharged internal combustion engine of motor vehicle, has cylindrical head cover housing, cylindrical head cover internal space, oil-separating device, two return valves and anti-vacuum valve |
US8347865B2 (en) * | 2011-05-09 | 2013-01-08 | Ford Global Technologies, Llc | System and method for returning oil separated from engine crankcase gases |
JP2014095314A (en) * | 2012-11-08 | 2014-05-22 | Honda Motor Co Ltd | Cover structure of internal combustion engine |
US9080478B2 (en) * | 2013-01-21 | 2015-07-14 | Ford Global Technologies, Llc | Oil separator |
DE102013016722A1 (en) * | 2013-10-09 | 2015-04-09 | Daimler Ag | Integration of a fuel rail in the cylinder head cover of an internal combustion engine |
US10119508B2 (en) * | 2013-12-13 | 2018-11-06 | Volvo Truck Corporation | Cover of an internal combustion engine assembly having a common rail, engine assembly and automotive vehicle including such a cover |
JP6347186B2 (en) * | 2014-09-08 | 2018-06-27 | いすゞ自動車株式会社 | Diesel engine and fuel leak detection method for diesel engine |
JP2016113999A (en) * | 2014-12-17 | 2016-06-23 | アイシン精機株式会社 | Oil mist separator |
JP6468687B2 (en) * | 2015-02-02 | 2019-02-13 | 本田技研工業株式会社 | Sound insulation structure of internal combustion engine |
DE102016205678B4 (en) * | 2015-04-08 | 2021-09-09 | Suzuki Motor Corporation | OIL SEPARATION MECHANISM OF A COMBUSTION ENGINE |
JP6547797B2 (en) * | 2017-07-12 | 2019-07-24 | マツダ株式会社 | Engine cylinder head cover structure |
DE102018124654B4 (en) * | 2018-10-05 | 2021-07-15 | Woco Industrietechnik Gmbh | Device for separating particles from a gas flow, particle separator and crankcase ventilation system |
-
2019
- 2019-01-23 DE DE102019000498.1A patent/DE102019000498A1/en active Pending
-
2020
- 2020-01-08 WO PCT/EP2020/000004 patent/WO2020151903A1/en unknown
- 2020-01-08 CN CN202080008221.7A patent/CN113272531B/en active Active
- 2020-01-08 US US17/423,486 patent/US20220074328A1/en active Pending
- 2020-01-08 EP EP20701133.9A patent/EP3914812B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN113272531B (en) | 2023-09-01 |
DE102019000498A1 (en) | 2020-07-23 |
CN113272531A (en) | 2021-08-17 |
EP3914812B1 (en) | 2023-12-06 |
US20220074328A1 (en) | 2022-03-10 |
WO2020151903A1 (en) | 2020-07-30 |
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