EP2937533B1 - Ventilation module for a combustion engine - Google Patents
Ventilation module for a combustion engine Download PDFInfo
- Publication number
- EP2937533B1 EP2937533B1 EP14187950.2A EP14187950A EP2937533B1 EP 2937533 B1 EP2937533 B1 EP 2937533B1 EP 14187950 A EP14187950 A EP 14187950A EP 2937533 B1 EP2937533 B1 EP 2937533B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- oil
- ventilation module
- valve body
- valve housing
- 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.)
- Active
Links
- 238000009423 ventilation Methods 0.000 title claims description 37
- 238000002485 combustion reaction Methods 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 claims description 38
- 230000005484 gravity Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- 239000011796 hollow space material Substances 0.000 claims 1
- 230000036316 preload Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 9
- 238000013022 venting Methods 0.000 description 9
- 125000006850 spacer group Chemical group 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 210000002105 tongue Anatomy 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000012815 thermoplastic material Substances 0.000 description 2
- 208000031872 Body Remains Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
- F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase
- F01M2013/0494—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase using check valves
-
- 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
- F02F7/006—Camshaft or pushrod housings
Definitions
- the invention relates to a ventilation module for an internal combustion engine, comprising an oil separator with an oil return and a non-return valve inserted in the oil return.
- a non-return valve as a safety valve for an oil return below the oil level should prevent the oil from being sucked out of the oil sump into the clean room, for example, when suddenly very high pressure differences occur.
- check valve should ensure an unhindered drainage of the oil, for example in the oil pan in normal operation.
- non-return valves with a screen or plate-shaped elastomer body which is in the closed position in the rest position of the engine and automatically opens at a negative pressure in the crankcase and / or at a certain level in an oil reservoir, are common US 4 602 595 ; WO 12 32955 A1 ; DE 10 2004 002 310 A1 ; DE 20 2004 004 803 U1 , Fig. 14; WO 2004 090292 A2 , In this design, there is a risk of freezing at rest of the engine, since the oil can not drain.
- the spring diaphragm according to DE 296 05 425 U1 Although it is in the unloaded state by its own weight in an open position. However, the spring diaphragm hangs down freely in the open position, so that the open position is not well defined. For example, as a result of aging or heavy use, a decrease in the spring tongue can not be prevented, whereby the functioning of the check valve may be at risk.
- U1 discloses an oil return valve having a float body disposed in a housing and having a drain opening in the housing when a defined one is exceeded Oil level releases by buoyancy and closes when falling below a defined oil level due to gravity.
- EP 1 090 210 B1 discloses a cyclone separator with a valve ball arranged in the oil return, which closes the oil return in the idle state of the engine due to gravity.
- Another type provides a controlled check valve, which is opened externally by means of external energy, such as compressed air or magnetic force, see DE 195 15 482 A1 ; DE 202 17 601 U1 ; DE 203 02 911 U1 ; DE 10 2004 018 567 B3 ,
- external energy such as compressed air or magnetic force
- An oil separation system with an oil return check valve is from the DE 196 28 812 B4 known.
- the check valve comprises a housing and a valve body mounted movably as a whole within the housing, the valve body releasing a maximum opening cross section when the engine is at rest and being actuated in a pressure-actuated manner with an overpressure in the crankcase relative to the oil separator, thereby closing an upper passage opening.
- the housing has at its outer periphery at least one sealing lip for sealing insertion into a leading from the oil separation filter to the crankcase return line for separated Oil on.
- the oil separation filter and the check valve are separate units and do not form a unitary vent module.
- the problem here is also, as with other conventional ball and diaphragm valves that the valve already closes at low pressure differences, which may occur regularly in normal engine operation due to pressure oscillations.
- An oil film between the upper valve seat or the valve housing and the valve body prevents pressure equalization of the space above and below the valve body, thus closing the valve and possibly remaining in the closed position during further engine operation thus preventing drainage of the separated oil.
- two wall thicknesses are present in the region of the valve, namely the valve housing and the walls forming the oil return, as a result of which the valve as a whole builds up correspondingly large.
- DE 10 2006 018 783 A1 discloses a valve in a crankcase ventilation system with an oil collection chamber, the drain opening of which is closable by a valve plate.
- a valve basket is arranged, which prevents the valve plate from slipping out.
- a float is arranged, which is guided axially displaceable by means of four webs formed by a carrier housing. The valve and the float are arranged in the carrier housing.
- valve Once the valve is closed, the pressure in the oil collection chamber can no longer continue in the oil line, but rebuilds itself within the oil collection room. Thus, the oil can flow out again after opening the valve and the pressure conditions stabilize again.
- the valve comprises a large number of separate parts (valve plate, valve basket, float, carrier housing) and is very large.
- the separated oil flows back into the oil sump through channels that end above the oil level. Therefore, the valve may undesirably close in case of overpressure in the crankcase, whereby the flow of the oil is prevented.
- DE 42 14 324 A1 discloses a cyclone separator for crankcase ventilation with a float valve disposed in the oil outlet. If there are such large pressure differences between the pressure in the cyclone and the pressure in the crankcase that oil rises from the oil sump in the downpipe to the cyclone, it is prevented from entering the funnel of the cyclone by the closing float valve. Below the float valve, an outlet is provided for connecting a hose line. The outlet and the hose are additional components. The connections between the outlet and the cyclone on the one hand and between the outlet and the hose and the hose itself represent potential leaks for oil rising in the return line so that oil can get into the cylinder head and, in the worst case, into the open air ,
- the object of the invention is to provide a vent module with a simple, compact check valve, under all operating conditions a largely continuous oil return from the clean room is guaranteed in the dirt room and disadvantages are avoided by rising in the return line oil.
- the valve according to the invention is designed so that the valve body, regardless of the above the valve falling gas pressure, and in particular independent of the gas pressures in the crankcase and the clean room of the oil separator, remains in the open position, if and as long as a defined oil level is not exceeded in the valve housing ,
- continuous oil return is basically ensured under all operating conditions of the engine.
- the valve body is automatically displaced by buoyancy into the closed position when and as long as a defined oil level is exceeded in the valve housing.
- the kickback function is reliably achieved.
- the oil separator and the check valve are integrated in a ventilation module.
- the check valve is part of the vent module, which also contains the oil separator, and no separate component.
- the oil separator and the check valve in the vent module are connected to each other in an oil-tight manner, so that oil from the oil separator can only enter the check valve through the oil return.
- the ventilation module has a sealing element which seals the oil return and which, when the ventilation module is mounted, is arranged on pressure between the ventilation module and an engine component.
- An escape of rising in the return line oil from the oil return at the interface between the vent module and engine is therefore excluded according to the invention.
- the venting module and the engine component are directly and advantageously sealed by contact with each other by means of the sealing element.
- a leak-prone Hose line between the venting module and the engine and appropriate fasteners such as in the case of DE 42 14 324 A1 are dispensable according to the invention.
- the outlet side of the valve is provided for connection to an oil return line which opens under an oil level.
- the check valve thus closes only when oil rises the oil return line to prevent entry of oil into the clean room. An undesirable closing of the valve at overpressure in the crankcase does not take place.
- the return line under oil level takes over the closure of the return line and prevents a bypass of the separator.
- a separate diaphragm with a passage opening is arranged on the inlet side of the valve, which forms a valve seat for the valve body and preferably bears against the valve housing.
- the design of the valve seat as a separate diaphragm has the advantage that the material of the valve seat can be adapted to the material of the valve body. In particular, this can be a quasi-isotropic or compared to shrinkage isotropic material, preferably an unreinforced or ball-reinforced thermoplastic, are selected so that valve seat and valve body remain even after age- or production-related shrinkage around and seal each other.
- the use of a separate panel allows the choice of another suitable material for the hood, such as glass fiber reinforced plastic.
- the venting module 10 is a cylinder head cover 39 Fig. 1
- Exhaust venting module 10 shown in cross-section has a housing 11, which consists for example of a thermoplastic material.
- the housing 11 includes, for example, an upper housing part 67 and a lower housing part 68.
- at least one oil separator 13 is arranged, here for example a Federzonneabscheider with a spring tongue 62, the blown gas on a gas inlet side 22 supplied from the crankcase 61 of the engine become.
- the cleaned gas passes from the oil separator 13 into a clean room 21 in the ventilation module 10 and is passed from there via a gas outlet 47, for example in the intake tract of the internal combustion engine.
- the separated oil can be collected in a collecting space 14 and is returned via an oil return 17 in the oil sump 63 of the crankcase 61 and the oil pan 64.
- the draining oil passes through an oil return line 65 into the oil sump 63 in the crankcase 61 and the oil pan 64.
- the oil return line 65 opens below an oil level , This may be the oil level 66 in the oil sump 63 in the crankcase 61 and the oil pan 64, respectively. However, it may also be an oil level between the oil drain opening 90 and the oil sump 63, for example a siphon in the cylinder head 60.
- a check valve 20 is arranged in the oil return 17, a check valve 20 is arranged.
- the check valve 20 is part of the vent module 10, here the cylinder head cover 39, and arranged in its interior.
- the check valve 20 comprises a tubular valve housing 27, which forms a chamber 50 for an elongated, preferably downwardly open valve body 37.
- the valve housing 27 is advantageously integrally formed by the housing 11, in particular by the lower housing part 68, of the venting module 10. A separate valve housing is then dispensable, whereby the number of parts can be reduced and the assembly process can be shortened, since a corresponding connection step is eliminated.
- the valve 20 builds over the prior art with a separate valve housing by a wall thickness smaller.
- the valve housing 27 may also be integrally formed by the upper housing part 67 of the housing 11 of the vent module 10.
- the valve housing 27 is preferably open both upwards and downwards.
- the valve body 37 is inserted from above into the valve housing 27.
- the upper opening 69 in the valve housing 27 thus forms the mounting opening 93 of the valve 20.
- the valve body 37 is inserted from below into the valve housing 27.
- the lower opening 70 of the valve housing 27 forms the mounting opening 93 of the valve 20.
- the diameter of the mounting opening 93 of the valve housing 27 advantageously corresponds to the diameter d2 of the chamber 50, so that the valve body 37 from above or from below through the mounting hole 93 is used.
- the diameter d2 of the chamber 50 is preferably in the range between 6 mm and 16 mm.
- the ratio of the length L of the valve body 37 to the diameter d2 of the chamber 50 is preferably at least two.
- the oil drain opening 90 of the vent module 10 here the cylinder head cover 39.
- the passage opening 91 of the cap 92 which will be described below, forms the oil drain opening 90 of the ventilation module 10.
- the diameter d1 of the oil drain opening 90 is advantageously at least partially smaller than the diameter d2 of the chamber 50. This can be achieved by an example annular, inwardly projecting collar 71 at the lower end of the valve housing 27 and the cap 92.
- the diameter d1 of the oil drain opening 90 is preferably in the range between 5 mm and 11 mm.
- the ratio of the length L of the valve body 37 to the diameter d1 of the oil drain opening 90 is preferably at least two, more preferably at least 2.5, for example about three.
- the stated values or value ranges are optimally adapted to the requirements of oil return in crankcase ventilation.
- the valve body 37 has a cylindrical main body 72 whose outer diameter is smaller than the inner diameter d2 of the chamber 50, so that in the annular gap 74 formed between the main body 72 and the chamber 50, which is preferably at least 0.75 mm, more preferably at least 1 mm , oil can drain down at any time.
- a plurality of, for example, three axial vanes 73 is provided (in FIG. 8 can not be seen due to the cut), which are advantageously distributed equidistantly over the circumference of the base body 72.
- the radial dimensions of the vanes 73 are selected such that the outer diameter of the valve body 37 defined in particular by the vanes 73 is smaller than the inner diameter d2 of the chamber 50 or of the valve housing 27 and with play the inner diameter d2 of the chamber 50 or of the valve housing 27 equivalent.
- the radial projection of the vanes 73, in particular over the cylindrical base body 72 thus substantially corresponds to the width of the annular gap 74.
- the wings 73 hold the valve body 37 defined, in particular centrally in the chamber 50 and generate the annular gap 74 between the valve housing 27 and the valve body 37th ,
- At least one spacer 75 is advantageously provided at the lower end of the valve body 37 in order to keep the main body 72 at a distance from the oil drain opening 90.
- a plurality of spacers 75 are provided, which are expediently designed as an extension of the vanes 73.
- the spacers 75 rest, for example, on the collar 71 of the valve housing 27 or the cap 92.
- the spacer or spacers 75 may also be formed as upwardly projecting elements in the collar 71.
- annular aperture 77 is provided, which forms an upper stop and a valve seat for the valve body 37.
- the aperture 77 is preferably a separate component, in particular the valve housing 27 and the aperture 77 are separate components.
- the aperture 77 has an in particular concentric inner passage opening 82.
- the valve body 37 is closed at its upper end by a cap 83 which closes the opening 82 of the orifice 77 against oil passage when the valve body 37 is in the upper stop position.
- the diameter of the cap 83 is therefore advantageously larger than the inner diameter of the opening 82 of the aperture 77.
- the cap 83 of the valve body 37 may advantageously be rounded and, for example, hemispherical.
- the inner wall 84 of the aperture 77 forming the opening 82 may advantageously also be rounded, in particular in order to achieve optimum cooperation with the rounded cap 83.
- a recess 78 is provided into which the aperture 77 can be inserted from above.
- the inner diameter of the recess 78 is advantageously greater than the inner diameter d2 of the chamber 50, so that the valve housing 27 forms a projection 79 on which the aperture 77 rests.
- the inner diameter of the recess 78 preferably corresponds to the outer diameter of the aperture 77th
- the aperture 77 is preferably cylindrically shaped.
- at the outer periphery of the aperture 77 advantageously at least one circumferential sealing ridge 80 is provided, whose outer diameter is slightly larger than the inner diameter of the recess 78.
- the aperture 77 is pressed into the recess 78, so that the sealing ridge 80 sealingly cooperates with the recess 78 by deformation.
- the aperture 77 can for safety's sake by a hold-down 81, which may be formed on the housing 11, for example on the upper housing shell 67, in the in the Fig. 1 .
- Fig. 2 and Fig. 4 shown operating position are kept.
- the hold-down 81 has at its lower end webs 85 which act on the aperture 77, and free spaces 86 formed between the webs, through which oil can flow from the outside in through the hold-down 81 and through the opening 82 of the aperture 77 explained below ,
- the aperture 77 is inserted from below into the valve chamber 50.
- the upper opening 69 of the valve chamber 50 preferably has a smaller diameter than the aperture 77, so that the aperture 77 rests against the upper opening 69 forming annular projection 94 of the valve housing 27 from below, see FIGS. 6 to 8 .
- the aperture 77 is advantageously sealingly connected, for example welded, to the valve housing 27 at the upper end of the chamber 50.
- the combination aperture 77 / valve body 37 closes the valve housing 27 upwardly upon buoyancy of the valve body 37.
- the aperture 77 can also be pressed sealingly into the valve chamber 50 from below or fastened by means of screw or adhesive, for example.
- a securing element 92 is provided which prevents the valve body 37 from falling out of the valve chamber 50 downwards.
- the securing element 92 is preferably in the form of a cap with a cylindrical portion 97, with which the cap 92 can be pushed or pushed over the valve housing 27 from the outside, and a central opening 91, wherein the annular collar 71 forming the opening 91 a bearing surface or a lower stop for the valve body 37, for example, for the spacers 75 forms.
- a latching means 95 is preferably provided which cooperates with a corresponding latching means 96 on the valve housing 27 latching.
- the latching means 95 is preferably an annular groove on the inner periphery of the cylindrical portion 97 of the cap 92.
- the latching means 96 is preferably an annular bead or ridge on the outer circumference of the valve housing 27.
- the web 96 on the cap 92 and the locking groove 95 on the Valve housing 27 may be provided. Differently shaped locking means are possible.
- other connection means between the securing element 92 and the valve housing 27 are possible, for example, screw means or adhesive.
- the securing means 92 is preferably releasably connectable to the valve housing 27.
- the valve 20 and the oil return 17 is by means of a sealing element 12 against an adjacent engine component 38, in the FIGS. 1 to 7 against the cylinder head 60, in FIG. 8 against a so-called Closed Cam Carrier 48, sealed.
- a sealing element 12 is advantageously a sealing ring, which is arranged around the valve housing 27 around and preferably rests against this (radial seal).
- the sealing ring 12 here seals the valve 20 against a bore 57 in the engine component 38 (see FIG. 8 ), in which the valve 20 and the valve housing 27 is sealingly insertable.
- a radial recess 98 is advantageously provided (see FIG. 6 ), so that in the assembled state, axially between the recess 98 and the securing means 92, a groove 87, in particular a circumferential groove, for receiving the sealing ring 12 is formed.
- the advantage of the groove 87 forming the cap 92 is that the counterpart with the bead in the axial direction of the valve 20 is forcibly deformed and no burr due to a tool separation the radial sealing profile of the sealing ring 12 on the valve 20 interrupts or bothers.
- the detent groove 95 in the cap 92 may also be positively deformed.
- axial slots 99 are preferably provided, which facilitate the assembly of the cap 92.
- the groove 87 may also be provided in the valve housing 27.
- the sealing element 12 is arranged on pressure between the ventilation module 10, in particular the valve 20 or the valve housing 27, and the engine component 38.
- the distance between the venting module 10 and the engine component 38 in the region of the sealing element 12 in the assembled state is less than its extent, so that the sealing effect of the sealing element is achieved by its deformation.
- the sealing element 12 is used for local sealing of the oil return 17 at the interface between the venting module 10 and the adjacent engine component 38, in particular against the return direction. Local sealing means that the sealing element 12 advantageously seals no other passage opening between the ventilation module 10 and the adjacent engine component 38 and, in particular, does not surround the gas inlet for the entry of the blow-by gases into the ventilation module 10, for which a separate sealing element is advantageously provided.
- the circumference of the sealing element 12 is advantageously at most 1/2, more advantageously at most 1/3, even more advantageously at most 1/4 of the circumference of the venting module 10 in the plane of the sealing element 12.
- the circumference of the sealing element 12 is advantageously at most four times, further advantageously at most three times, even more advantageously at most twice, even more advantageously at most one and a half times the circumference of the oil return opening 74 in the plane of the sealing element 12.
- the valve body 37 is advantageously made in one piece from a quasi-isotropic material or a material which is isotropic with respect to shrinkage, in particular an unreinforced thermoplastic material or a glass ball-reinforced plastic.
- the diaphragm 77 is advantageously made in one piece from the same material as the valve body 37.
- the valve housing 27 is made of a suitable material, in particular a material other than the diaphragm 77, for example a fiber-reinforced thermoplastic.
- the engine part 38 is formed by a hood 48 called a closed cam carrier which can be placed on the cylinder head 60 and advantageously consists of metal, in particular aluminum, because of high temperatures of use, and which also contains the camshafts.
- a separate ventilation module 10 is connected to the hood 48, attachment points and passages for the gas inlet and the oil return as interface to the ventilation module 10 being provided on the hood.
- the gas inlet is locally sealed by means of a sealing element, not shown, and the oil return 17 is locally sealed as described by means of the sealing element 12.
- the gas supply to the venting module 10 may alternatively also be effected by means of a hose, as well as the discharge of the clean gas from the tubular clean gas outlet 47.
- the separator 13 which is in FIG. 8 is shown only schematically, arranged in the interior of the vent module 10 formed between the housing parts 67, 68.
- the housing 11 forms here a separator housing and may for example consist of plastic. How out FIG. 8 the separator housing 11 and the oil separator 13 are located on top of the closed cam carrier 48.
- the valve housing 27 is integrally formed by the housing 11 or a housing part 67 of the ventilation module 10 with the described advantages.
- the valve housing 27 is inserted into a tubular receptacle 89 in the motor part 38, which forms the bore 57, ie the closed cam carrier 48, from above and sealed by the sealing ring 12 against the tubular receptacle 89.
- the aperture 77 and the valve housing 27 and the housing part 68 are advantageously separate components.
- the engine component 38, against which the check valve 20 is sealed by means of the sealing element 12, is not limited to a cylinder head 60 or a closed cam carrier 48.
- a vent module 10 is provided for attachment to a so-called.
- Front cover i. a cover on one side, here the front, of the engine.
- valve body 37 is inserted from above through the mounting hole 90 in the valve housing 27. Subsequently, the aperture 77 is inserted freely into the recess 78 of the lower housing shell 68 of the cylinder head cover 39. Finally, the upper housing shell 67 is placed on the lower housing shell 68 and connected thereto, wherein due to the blank holder 81, the aperture 77 is held in the operating position.
- valve 20 For mounting the valve 20 is in the case of the embodiment according to FIGS. 5 to 8 the aperture 77 freely from below into the valve housing 27 to the stop at the upper end, that is, on the collar-shaped annular projection 94, inserted and there connected to the valve housing 27, for example by welding. Thereafter, the valve body 37 is inserted freely from below through the mounting hole 70 in the valve housing 27. The sealing ring 12 is mounted and then the fuse element 92 pushed from below over the valve housing 27 until the latching means 95, 96 engage locking into one another.
- the disassembly of the valve 20 according to FIGS. 5 to 8 takes place in the reverse order as the assembly: removing the securing means 92 of the valve housing 27, free removal of the Valve body 37 from the valve housing 27 down, optionally releasing and removing the aperture 77 down from the valve housing 27, disassembly of the sealing ring 12th
- the valve body 37 At rest of the engine and in the in the FIGS. 1 . 2 . 4 . 7 and 8th shown normal operating position, the valve body 37 is due to gravity in the lower position in which the spacers 75 rest on the collar 71. In this open position of the valve 20, oil separated from the oil separator 13 can flow back through the opening 82 of the orifice 77, the gap 74, the clearances 76 and the oil discharge opening 90 via the oil return line into the oil sump 63 in the crankcase 61 and the oil sump 64, respectively. As long as no fluid-induced buoyancy forces acting on the valve body 37, the valve body 37 remains in this operating position regardless of the prevailing gas pressures, especially even at the maximum occurring during operation of the internal combustion engine pressure difference between the crankcase 61 and the clean room 21st
- valve body 37 as a whole is displaced upward as oil in the oil return line 65 rises and the liquid level in the valve chamber 50 rises above a critical level and exerts a buoyant force on the valve body 37.
- the valve body 37 is moved upwards only by liquid buoyancy; the valve 20 is thus fluid actuated and not gas pressure actuated.
- the check valve 20 is a float valve, since the position of the valve body 37 is controlled solely by the liquid level in the valve chamber 50.
- the valve body 37 can therefore Also referred to as a buoyant body. Since the valve body 37 also forms the float body, in the valve 20 there is only one part which is movable during operation, namely the valve body 37.
- valve 20 differs from the valve of great construction DE 10 2006 018 783 A1 , where the valve body (valve plate) and the float are separate, each independently movable components, between which, moreover, a valve cage is arranged.
- the buoyancy of the valve body 37 is terminated by striking the valve body 37 on the aperture 77. In this closed position of the valve 20, the valve cap 83 is sealingly against the aperture 77 and a further increase in oil and penetration into the clean room 21 is prevented.
- the void volume of the valve body 37 is advantageously selected so that the valve body 37 at 15 percent filling, preferably at 20 percent filling, more preferably at 25 percent filling with oil still generates enough lift to close the valve 20.
- the inner diameter of the aperture 82 is chosen sufficiently small, so that the valve body 37 starting from the closed position even at maximum occurring during operation of the internal combustion engine pressure difference between the crankcase 61 and the clean room 21, and in addition against the holding force of an oil film between the valve body 37 and the Aperture 77, again gravitationally falls down into the open position as soon as the oil level drops and no fluid-related buoyancy forces act more on the valve body 37. In this way, it is ensured that the valve 20 is closed only when oil rises through the oil return line 65 into the valve chamber 50, and only remains closed as long as a certain oil level in the valve chamber 50 is exceeded.
- the clear cross-sectional area of the upper opening 82 is preferably significantly smaller than the cross-sectional area of the drain opening 90 and is advantageously less than 30 mm 2 , more preferably less than 20 mm 2 , even more preferably less than 10 mm 2 and is particularly advantageously in the range between 3 mm 2 and 7 mm 2 .
- the diameter of the upper opening 82 is preferably significantly smaller than the diameter of the drain opening 90 and is advantageously less than 10 mm, more preferably less than 7 mm, even more preferably not more than 5 mm, and is particularly advantageously in the range between 2 mm and 3 mm.
- the oil drain valve 20 is operated solely by gravity and liquid buoyancy, but without electrical or magnetic external energy.
- the valve 20 is thus advantageously uncontrolled, non-magnetic and non-electrical.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Description
Die Erfindung betrifft ein Entlüftungsmodul für einen Verbrennungsmotor, umfassend einen Ölabscheider mit einem Ölrücklauf und ein in dem Ölrücklauf eingesetztes Rückschlagventil.The invention relates to a ventilation module for an internal combustion engine, comprising an oil separator with an oil return and a non-return valve inserted in the oil return.
Ein Rückschlagventil als Sicherheitsventil für einen Ölrücklauf unter Ölniveau soll verhindern, dass bei gegebenenfalls plötzlich auftretenden, sehr hohen Druckdifferenzen das Öl beispielsweise aus der Ölwanne in den Reinraum gesaugt wird.A non-return valve as a safety valve for an oil return below the oil level should prevent the oil from being sucked out of the oil sump into the clean room, for example, when suddenly very high pressure differences occur.
Hohe Druckdifferenzen treten beispielsweise bei verstopftem oder eingefrorenem Abscheider sowie bei plötzlichem Verdampfen von Ethanol (Kraftstoffbestandteil) auf. Durch Kurzstreckenfahrt kann sich Ethanol im Öl anreichern, bei Überschreiten der Verdampfungstemperatur (etwa 78°C) verdampft es nahezu schlagartig. Das gasförmig gewordene Ethanol sorgt für einen kurzfristigen, aber sehr starken Anstieg der Blow-By-Menge, die dann im Abscheider einen sehr hohen Druckverlust erzeugen kann.High pressure differences occur, for example, in clogged or frozen separator and in sudden evaporation of ethanol (fuel component). Through short-distance travel, ethanol can accumulate in the oil, when the evaporation temperature is exceeded (about 78 ° C) it evaporates almost abruptly. The gaseous ethanol provides for a short-term, but very strong increase in the blow-by amount, which can then produce a very high pressure drop in the separator.
Weiterhin soll das Rückschlagventil im Normalbetrieb einen ungehinderten Ablauf des Öls beispielsweise in die Ölwanne gewährleisten.Furthermore, the check valve should ensure an unhindered drainage of the oil, for example in the oil pan in normal operation.
Bei einem offenen Ölrücklauf besteht die Gefahr, dass ungereinigtes Gas über den Rücklauf in den Reinraum des Ölabscheiders gelangt. Erschwerend kommt hinzu, dass das durch den Rücklauf einströmende Gas bereits abgeschiedenes Öl mitreißt.With an open oil return, there is a risk that unpurified gas will enter the clean room of the oil separator via the return line. To make matters worse, the gas flowing in through the return gas entrains already separated oil.
Zur Vermeidung dieser Problematik sind Rückschlagventile unterschiedlicher Bauart bekannt.To avoid this problem check valves of different types are known.
Gängig sind beispielsweise Rückschlagventile mit einem schirm- oder tellerförmigen Elastomerkörper, der in der Ruhestellung des Motors in der Schließstellung ist und bei einem Unterdruck im Kurbelgehäuse und/oder bei einem bestimmten Füllstand in einem Ölreservoir selbsttätig öffnet, siehe
Ähnliches gilt für herkömmliche Federzungenventile, die in der Ruhestellung des Motors in der Schließstellung sind und sich bei einem Unterdruck im Kurbelgehäuse und/oder bei einem bestimmten Füllstand in einem Ölreservoir selbsttätig öffnen, siehe
Die Federmembran gemäß
Sämtlichen der vorgenannten Rückschlagventile ist gemeinsam, dass sie im Ruhezustand des Motors nicht den maximalen Öffnungsquerschnitt bereitstellen, was sich negativ auf das Einfrierverhalten auswirkt und zu einem langsameren Ablaufen des Öls führt.All of the aforementioned non-return valves have in common that they do not provide the maximum opening cross-section at rest of the engine, which has a negative effect on the freezing behavior and leads to a slower drainage of the oil.
Eine andere Bauart sieht ein gesteuertes Rückschlagventil vor, das mittels Fremdenergie, beispielsweise Druckluft oder Magnetkraft, fremdgesteuert geöffnet wird, siehe
Ein Ölabscheidesystem mit einem Ölrücklauf-Rückschlagventil ist aus der
Problematisch ist hierbei auch, wie bei anderen herkömmlichen Kugel- und Membranventilen, dass das Ventil bereits bei geringen Druckunterschieden schließt, die auch im normalen Motorbetrieb aufgrund von Druckschwingungen regelmäßig auftreten können. Ein Ölfilm zwischen dem oberen Ventilsitz oder dem Ventilgehäuse und dem Ventilkörper verhindert einen Druckausgleich des Raumes oberhalb und unterhalb des Ventilkörpers, weshalb das Ventil schließt und möglicherweise während des weiteren Motorbetriebs in geschlossener Stellung bleibt und somit ein Ablaufen des abgeschiedenen Öls verhindert. Des Weiteren sind im Bereich des Ventils zwei Wandstärken vorhanden, nämlich des Ventilgehäuses und der den Ölrücklauf bildenden Wandungen, wodurch das Ventil insgesamt entsprechend groß baut.The problem here is also, as with other conventional ball and diaphragm valves that the valve already closes at low pressure differences, which may occur regularly in normal engine operation due to pressure oscillations. An oil film between the upper valve seat or the valve housing and the valve body prevents pressure equalization of the space above and below the valve body, thus closing the valve and possibly remaining in the closed position during further engine operation thus preventing drainage of the separated oil. Furthermore, two wall thicknesses are present in the region of the valve, namely the valve housing and the walls forming the oil return, as a result of which the valve as a whole builds up correspondingly large.
Die Aufgabe der Erfindung besteht darin, ein Entlüftungsmodul mit einem einfachen, kompakt bauenden Rückschlagventil bereitzustellen, wobei unter sämtlichen Betriebsbedingungen eine weitestgehend kontinuierliche Ölrückführung vom Reinraum in den Schmutzraum garantiert ist und Nachteile durch in der Rücklaufleitung aufsteigendes Öl vermieden werden.The object of the invention is to provide a vent module with a simple, compact check valve, under all operating conditions a largely continuous oil return from the clean room is guaranteed in the dirt room and disadvantages are avoided by rising in the return line oil.
Die Erfindung löst diese Aufgabe mit den Merkmalen der unabhängigen Ansprüche. Das Ventil ist erfindungsgemäß so ausgebildet, dass der Ventilkörper unabhängig von dem über dem Ventil abfallenden Gasdruck, und insbesondere unabhängig von den Gasdrücken im Kurbelgehäuse und im Reinraum des Ölabscheiders, in der Offenstellung bleibt, wenn und solange ein definierter Ölpegel in dem Ventilgehäuse nicht überschritten ist. Durch dieses Merkmal der Erfindung ist eine kontinuierliche Ölrückführung grundsätzlich unter sämtlichen Betriebsbedingungen des Motors sichergestellt. Des Weiteren wird der Ventilkörper durch Auftrieb selbsttätig in die Schließstellung verschoben, wenn und solange ein definierter Ölpegel in dem Ventilgehäuse überschritten ist. Durch dieses Merkmal der Erfindung wird die Rückschlagfunktion zuverlässig erreicht.The invention solves this problem with the features of the independent claims. The valve according to the invention is designed so that the valve body, regardless of the above the valve falling gas pressure, and in particular independent of the gas pressures in the crankcase and the clean room of the oil separator, remains in the open position, if and as long as a defined oil level is not exceeded in the valve housing , By this feature of the invention, continuous oil return is basically ensured under all operating conditions of the engine. Furthermore, the valve body is automatically displaced by buoyancy into the closed position when and as long as a defined oil level is exceeded in the valve housing. By this feature of the invention, the kickback function is reliably achieved.
Erfindungsgemäß sind der Ölabscheider und das Rückschlagventil in einem Entlüftungsmodul integriert. Mit anderen Worten ist das Rückschlagventil Teil des Entlüftungsmoduls, das auch den Ölabscheider enthält, und kein separates Bauteil. Insbesondere sind der Ölabscheider und das Rückschlagventil in dem Entlüftungsmodul öldicht miteinander verbunden, so dass Öl von dem Ölabscheider ausschließlich durch den Ölrücklauf in das Rückschlagventil gelangen kann.According to the invention, the oil separator and the check valve are integrated in a ventilation module. In other words, the check valve is part of the vent module, which also contains the oil separator, and no separate component. In particular, the oil separator and the check valve in the vent module are connected to each other in an oil-tight manner, so that oil from the oil separator can only enter the check valve through the oil return.
Erfindungsgemäß weist das Entlüftungsmodul ein den Ölrücklauf abdichtendes Dichtelement auf, das bei montiertem Entlüftungsmodul auf Pressung zwischen dem Entlüftungsmodul und einem Motorbauteil angeordnet ist. Ein Austreten von in der Rücklaufleitung aufsteigendem Öl aus dem Ölrücklauf an der Schnittstelle zwischen Entlüftungsmodul und Motor ist daher erfindungsgemäß ausgeschlossen. Das Entlüftungsmodul und das Motorbauteil sind mittels des Dichtelements direkt und vorteilhaft auf Kontakt miteinander abgedichtet. Eine leckanfällige Schlauchleitung zwischen dem Entlüftungsmodul und dem Motor und entsprechende Befestigungsmittel wie beispielsweise im Falle der
Erfindungsgemäß ist die Ablaufseite des Ventils zur Verbindung mit einer unter einem Ölniveau mündenden Ölrücklaufleitung vorgesehen. Das Rückschlagventil schließt somit nur, wenn Öl die Ölrücklaufleitung aufsteigt, um einen Eintritt von Öl in den Reinraum zu verhindern. Ein unerwünschtes Schließen des Ventils bei Überdruck im Kurbelgehäuse findet nicht statt. Die Rückführleitung unter Ölniveau übernimmt hierbei den Verschluss der Rückführleitung und verhindert einen Bypass des Abscheiders.According to the invention, the outlet side of the valve is provided for connection to an oil return line which opens under an oil level. The check valve thus closes only when oil rises the oil return line to prevent entry of oil into the clean room. An undesirable closing of the valve at overpressure in the crankcase does not take place. The return line under oil level takes over the closure of the return line and prevents a bypass of the separator.
Erfindungsgemäß ist an der Einlaufseite des Ventils eine separate Blende mit einer Durchgangsöffnung angeordnet, die einen Ventilsitz für den Ventilkörper ausbildet und vorzugsweise an dem Ventilgehäuse anliegt. Die Ausbildung des Ventilsitzes als separate Blende hat den Vorteil, dass das Material des Ventilsitzes an das Material des Ventilkörpers angepasst sein kann. Insbesondere kann hierfür ein quasiisotroper bzw. gegenüber Schwindung isotroper Werkstoff, vorzugsweise ein unverstärkter oder kugelverstärkter thermoplastischer Kunststoff, gewählt werden, so dass Ventilsitz und Ventilkörper auch nach alters- oder fertigungsbedingter Schwindung rund bleiben und zueinander abdichten können. Die Verwendung einer separaten Blende lässt die Wahl eines anderen geeigneten Materials für die Haube, beispielsweise glasfaserverstärktem Kunststoff, zu.According to the invention, a separate diaphragm with a passage opening is arranged on the inlet side of the valve, which forms a valve seat for the valve body and preferably bears against the valve housing. The design of the valve seat as a separate diaphragm has the advantage that the material of the valve seat can be adapted to the material of the valve body. In particular, this can be a quasi-isotropic or compared to shrinkage isotropic material, preferably an unreinforced or ball-reinforced thermoplastic, are selected so that valve seat and valve body remain even after age- or production-related shrinkage around and seal each other. The use of a separate panel allows the choice of another suitable material for the hood, such as glass fiber reinforced plastic.
Die Erfindung wird im Folgenden anhand bevorzugter Ausführungsformen unter Bezugnahme auf die beigefügten Figuren erläutert. Dabei zeigt:
- Fig. 1
- eine schematische Ansicht eines Systems zur Kurbelgehäuseentlüftung eines Verbrennungsmotors;
- Fig. 2
- einen Querschnitt durch ein erfindungsgemäßes Rückschlagventil;
- Fig. 3
- eine perspektivische Explosionsdarstellung eines Ventilkörpers und einer Blende;
- Fig. 4
- eine weitere Querschnittsansicht eines erfindungsgemäßes Rückschlagventils;
- Fig. 5
- eine perspektivische Explosionsdarstellung eines Rückschlagventils in einer weiteren Ausführungsform;
- Fig. 6, 7
- Querschnittsansichten des Rückschlagventils in der Ausführungsform gemäß
Figur 5 ; und - Fig. 8
- eine Querschnittsansicht eines Rückschlagventils in einer dritten Ausführungsform.
- Fig. 1
- a schematic view of a system for crankcase ventilation of an internal combustion engine;
- Fig. 2
- a cross section through a check valve according to the invention;
- Fig. 3
- an exploded perspective view of a valve body and a diaphragm;
- Fig. 4
- a further cross-sectional view of an inventive check valve;
- Fig. 5
- an exploded perspective view of a check valve in another embodiment;
- Fig. 6, 7
- Cross-sectional views of the check valve in the embodiment according to
FIG. 5 ; and - Fig. 8
- a cross-sectional view of a check valve in a third embodiment.
In den Ausführungsbeispielen gemäß
In dem Ölrücklauf 17 ist ein Rückschlagventil 20 angeordnet. Das Rückschlagventil 20 ist Teil des Entlüftungsmoduls 10, hier der Zylinderkopfhaube 39, und in dessen Innerem angeordnet. Das Rückschlagventil 20 umfasst ein rohrförmiges Ventilgehäuse 27, das eine Kammer 50 für einen länglichen, vorzugsweise nach unten offenen Ventilkörper 37 bildet.In the
Das Ventilgehäuse 27 wird vorteilhaft von dem Gehäuse 11, insbesondere von dem unteren Gehäuseteil 68, des Entlüftungsmoduls 10 integral ausgebildet. Ein separates Ventilgehäuse ist dann entbehrlich, wodurch die Anzahl der Teile verringert und der Montageprozess verkürzt werden kann, da ein entsprechender Verbindungsschritt entfällt. Zudem baut das Ventil 20 gegenüber dem Stand der Technik mit separatem Ventilgehäuse um eine Wandstärke kleiner. Das Ventilgehäuse 27 kann auch von dem oberen Gehäuseteil 67 des Gehäuses 11 des Entlüftungsmoduls 10 integral ausgebildet sein.The
Das Ventilgehäuse 27 ist vorzugsweise sowohl nach oben als auch nach unten offen. In der Ausführungsform der
In der Ausführungsform der
Der Durchmesser d1 der Ölablauföffnung 90 ist vorteilhaft zumindest partiell kleiner als der Durchmesser d2 der Kammer 50. Dies kann durch einen beispielsweise ringförmigen, nach innen vorspringenden Kragen 71 am unteren Ende des Ventilgehäuses 27 bzw. der Kappe 92 erreicht werden. Der Durchmesser d1 der Ölablauföffnung 90 liegt vorzugsweise im Bereich zwischen 5 mm und 11 mm. Das Verhältnis von Länge L des Ventilkörpers 37 zu dem Durchmesser d1 der Ölablauföffnung 90 beträgt vorzugsweise mindestens zwei, weiter vorzugsweise mindestens 2,5, beispielsweise etwa drei. Die genannten Werte bzw. Wertebereiche sind optimal an die Anforderungen der Ölrückförderung in der Kurbelgehäuseentlüftung angepasst.The diameter d1 of the oil drain opening 90 is advantageously at least partially smaller than the diameter d2 of the
Der Ventilkörper 37 weist einen zylindrischen Grundkörper 72 auf, dessen Außendurchmesser kleiner ist als der Innendurchmesser d2 der Kammer 50, so dass in dem zwischen dem Grundkörper 72 und der Kammer 50 gebildeten Ringspalt 74, der vorzugsweise mindestens 0.75 mm, weiter vorzugsweise mindestens 1 mm beträgt, jederzeit Öl nach unten ablaufen kann. Am Außenumfang des Grundkörpers 72 ist eine Mehrzahl von beispielsweise drei axialen Flügeln 73 vorgesehen (in
Am unteren Ende des Ventilkörpers 37 ist vorteilhaft mindestens ein Abstandshalter 75 vorgesehen, um den Grundkörper 72 von der Ölablauföffnung 90 beabstandet zu halten. In den vorliegenden Ausführungsformen ist eine Mehrzahl von Abstandshaltern 75 vorgesehen, die zweckmäßig als Fortsatz der Flügel 73 ausgebildet sind. Die Abstandshalter 75 liegen beispielsweise auf dem Kragen 71 des Ventilgehäuses 27 bzw. der Kappe 92 auf.At least one
Zwischen den Abstandshaltern 75 sind entsprechende Freiräume 76 gebildet, so dass Öl ungehindert durch den Spalt 74, die Freiräume 76 und die Ablauföffnung 90 abfließen kann, wenn sich der Ventilkörper 37 in der unteren Stellung befindet. Der oder die Abstandshalter 75 können auch als nach oben überstehende Elemente in dem Kragen 71 ausgebildet sein.Between the
Am oberen Ende des Ventilgehäuses 27 ist eine ringförmige Blende 77 vorgesehen, die einen oberen Anschlag und einen Ventilsitz für den Ventilkörper 37 bildet. Die Blende 77 ist vorzugsweise ein separates Bauteil, insbesondere sind das Ventilgehäuse 27 und die Blende 77 separate Bauteile. Die Blende 77 weist eine insbesondere konzentrische innere Durchgangsöffnung 82 auf. Der Ventilkörper 37 ist an seinem oberen Ende durch eine Kappe 83 verschlossen, die die Öffnung 82 der Blende 77 gegen Öldurchtritt verschließt, wenn sich der Ventilkörper 37 in der oberen Anschlagstellung befindet. Der Durchmesser der Kappe 83 ist daher zweckmäßigerweise größer als der Innendurchmesser der Öffnung 82 der Blende 77. Die Kappe 83 des Ventilkörpers 37 kann vorteilhaft abgerundet und beispielsweise halbkugelförmig sein. Die die Öffnung 82 bildende Innenwand 84 der Blende 77 kann vorteilhaft ebenfalls abgerundet sein, insbesondere um ein optimales Zusammenwirken mit der abgerundeten Kappe 83 zu erreichen.At the upper end of the
In der Ausführungsform gemäß
An ihrem Außenumfang ist die Blende 77 vorzugsweise zylindrisch geformt. In der Ausführungsform gemäß
In den Ausführungsformen gemäß den
In den Ausführungsformen gemäß den
An dem Sicherungselement 92 ist vorzugsweise ein Rastmittel 95 vorgesehen, das mit einem entsprechenden Rastmittel 96 an dem Ventilgehäuse 27 rastend zusammenwirkt. Das Rastmittel 95 ist vorzugsweise eine ringförmige Nut am Innenumfang des zylindrischen Teils 97 der Kappe 92. Das Rastmittel 96 ist vorzugsweise ein ringförmiger Wulst oder Steg am Außenumfang des Ventilgehäuses 27. Selbstverständlich kann der Steg 96 auch an der Kappe 92 und die Rastnut 95 an dem Ventilgehäuse 27 vorgesehen sein. Anders geformte Rastmittel sind möglich. Anstelle der Rastmittel 95, 96 sind auch andere Verbindungsmittel zwischen dem Sicherungselement 92 und dem Ventilgehäuse 27 möglich, beispielsweise Schraubmittel oder Klebemittel. Nach dem zuvor Gesagten ist das Sicherungsmittel 92 vorzugsweise lösbar mit dem Ventilgehäuse 27 verbindbar bzw. verbunden.On the securing
Das Ventil 20 bzw. der Ölrücklauf 17 ist mittels eines Dichtelements 12 gegen ein angrenzendes Motorbauteil 38, in den
An dem Ventilgehäuse 27 ist vorteilhaft ein radialer Rücksprung 98 vorgesehen (siehe
Im montierten Zustand ist das Dichtelement 12 auf Pressung zwischen dem Entlüftungsmodul 10, insbesondere dem Ventil 20 bzw. dem Ventilgehäuse 27, und dem Motorbauteil 38 angeordnet. Mit anderen Worten ist der Abstand zwischen dem Entlüftungsmodul 10 und dem Motorbauteil 38 im Bereich des Dichtelements 12 im montierten Zustand geringer als dessen Ausdehnung, so dass die Dichtwirkung des Dichtelements durch dessen Verformung erzielt wird.In the mounted state, the sealing
Das Dichtelement 12 dient zur lokalen Abdichtung des Ölrücklaufs 17 an der Schnittstelle zwischen dem Entlüftungsmodul 10 und dem angrenzenden Motorbauteil 38, insbesondere entgegen der Rückführrichtung. Lokale Abdichtung bedeutet, dass das Dichtelement 12 vorteilhaft keine andere Durchtrittsöffnung zwischen dem Entlüftungsmodul 10 und dem angrenzenden Motorbauteil 38 abdichtet und insbesondere nicht den Gaseinlass für den Eintritt der Blowbygase in das Entlüftungsmodul 10 umgibt, für den vorteilhaft ein separates Dichtelement vorgesehen ist. Der Umfang des Dichtelements 12 beträgt vorteilhaft höchstens 1/2, weiter vorteilhaft höchstens 1/3, noch weiter vorteilhaft höchstens 1/4 des Umfangs des Entlüftungsmoduls 10 in der Ebene des Dichtelements 12. Der Umfang des Dichtelements 12 beträgt vorteilhaft höchstens das Vierfache, weiter vorteilhaft höchstens das Dreifache, noch weiter vorteilhaft höchstens das Zweifache, noch weiter vorteilhaft höchstens das Anderthalbfache des Umfangs der Ölrücklauföffnung 74 in der Ebene des Dichtelements 12.The sealing
Der Ventilkörper 37 ist vorteilhaft einstückig aus einem quasiisotropen Material bzw. einem gegenüber Schwindung isotropen Material, insbesondere einem unverstärkten thermoplastischen Kunststoff oder einem glaskugelverstärkten Kunststoff gefertigt. Die Blende 77 ist vorteilhaft einstückig aus dem gleichen Material gefertigt wie der Ventilkörper 37. Das Ventilgehäuse 27 ist aus einem geeigneten Material gefertigt, insbesondere einem anderen Material als die Blende 77, beispielsweise einem faserverstärkten thermoplastischen Kunststoff.The
Bei der Ausführungsform gemäß
In der Ausführungsform gemäß
Das Motorbauteil 38, gegen welches das Rückschlagventil 20 mittels des Dichtelements 12 abgedichtet ist, ist nicht auf einen Zylinderkopf 60 oder einen Closed Cam Carrier 48 beschränkt. In einer nicht gezeigten Ausführungsform ist beispielsweise ein Entlüftungsmodul 10 zur Befestigung an einem sog. Front Cover vorgesehen, d.h. einer Abdeckung an einer Seite, hier der Vorderseite, des Motors.The
Zur Montage des Ventils 20 wird im Falle der Ausführungsform gemäß
Zur Montage des Ventils 20 wird im Falle der Ausführungsform gemäß
Die Demontage des Ventils 20 gemäß
Im Folgenden wird die Funktion des Rückschlagventils 20 beschrieben.The function of the
Im Ruhezustand des Verbrennungsmotors und in der in den
Der Ventilkörper 37 wird als Ganzes nach oben verschoben, wenn Öl in der Ölrücklaufleitung 65 aufsteigt und der Flüssigkeitspegel in der Ventilkammer 50 über ein kritisches Niveau ansteigt und eine Auftriebskraft auf den Ventilkörper 37 ausübt. Der Ventilkörper 37 wird nur durch Flüssigkeitsauftrieb nach oben verschoben; das Ventil 20 ist somit flüssigkeitsbetätigt und nicht gasdruckbetätigt. Anders ausgedrückt ist das Rückschlagventil 20 ein Schwimmerventil, da die Position des Ventilkörpers 37 ausschließlich vom Flüssigkeitsstand in der Ventilkammer 50 gesteuert wird. Der Ventilkörper 37 kann daher auch als Auftriebskörper bezeichnet werden. Da der Ventilkörper 37 auch den Schwimmerkörper bildet, ist in dem Ventil 20 nur ein im Betrieb bewegliches Teil vorhanden, nämlich der Ventilkörper 37. Dies unterscheidet das erfindungsgemäße Ventil 20 von dem groß bauenden Ventil gemäß
Der Auftrieb des Ventilkörpers 37 wird durch Anschlagen des Ventilkörpers 37 an der Blende 77 beendet. In dieser Geschlossenstellung des Ventils 20 liegt die Ventilkappe 83 dichtend an der Blende 77 an und ein weiteres Ansteigen von Öl und Eindringen in den Reinraum 21 wird verhindert. Das Hohlraumvolumen des Ventilkörpers 37 ist dabei vorteilhaft so gewählt, dass der Ventilkörper 37 bei 15-prozentiger Füllung, vorzugsweise bei 20-prozentiger Füllung, weiter vorzugsweise bei 25-prozentiger Füllung mit Öl noch ausreichend Auftrieb erzeugt, um das Ventil 20 zu schließen.The buoyancy of the
Der Innendurchmesser der Blendenöffnung 82 ist ausreichend klein gewählt, so dass der Ventilkörper 37 ausgehend von der Geschlossenstellung auch bei maximaler im Betrieb der Brennkraftmaschine auftretender Druckdifferenz zwischen dem Kurbelgehäuse 61 und dem Reinraum 21, und zusätzlich gegen die Haltekraft eines Ölfilms zwischen dem Ventilkörper 37 und der Blende 77, wieder schwerkraftbedingt nach unten in die Offenstellung fällt, sobald der Ölpegel absinkt und keine flüssigkeitsbedingten Auftriebskräfte mehr auf den Ventilkörper 37 wirken. Auf diese Weise wird sichergestellt, dass das Ventil 20 ausschließlich dann geschlossen ist, wenn Öl durch die Ölrücklaufleitung 65 bis in die Ventilkammer 50 ansteigt, und nur solange geschlossen bleibt, wie ein bestimmter Ölpegel in der Ventilkammer 50 überschritten wird. In allen anderen Betriebszuständen des Verbrennungsmotors, insbesondere auch im Falle von Druckschwingungen oder eines Unterdrucks im Reinraum 21 relativ zum Kurbelgehäuse 61, bleibt das Ventil 20 in der Offenstellung und das abgeschiedene Öl kann ablaufen. Die lichte Querschnittsfläche der oberen Öffnung 82 ist vorzugsweise signifikant kleiner als die Querschnittsfläche der Ablauföffnung 90 und ist vorteilhaft kleiner als 30 mm2, weiter vorzugsweise kleiner als 20 mm2, noch weiter vorzugsweise kleiner als 10 mm2 und liegt besonders vorteilhaft im Bereich zwischen 3 mm2 und 7 mm2. Der Durchmesser der oberen Öffnung 82 ist vorzugsweise signifikant kleiner als der Durchmesser der Ablauföffnung 90 und ist vorteilhaft kleiner als 10 mm, weiter vorzugsweise kleiner als 7 mm, noch weiter vorzugsweise höchstens 5 mm und liegt besonders vorteilhaft im Bereich zwischen 2 mm und 3 mm.The inner diameter of the
Durch die vorteilhafte Mündung der Ölrücklaufleitung 65 unter einem Ölniveau, insbesondere unter dem Ölniveau 66 des Ölsumpfes 63 wird dabei erreicht, dass im Falle eines Überdrucks im Kurbelgehäuse 61 dieser nicht an der Ablauföffnung 90 des Rückschlagventils 20 anliegt, so dass der Ventilkörper 37 auch bei maximal auftretendem Überdruck in dem Kurbelgehäuse 61 in der Offenstellung verbleibt. Ein höherer Druck im Kurbelgehäuse 61 gegenüber dem Reinraum 21 wird über den hydrostatischen Druck der Ölsäule in der Rücklaufleitung 65 abgebaut.Due to the advantageous mouth of the
Nach dem zuvor Gesagten wird das Ölablassventil 20 ausschließlich durch Schwerkraft und Flüssigkeitsauftrieb, jedoch ohne elektrische oder magnetische Fremdenergie, betätigt. Das Ventil 20 ist somit vorteilhaft ungesteuert, nicht-magnetisch und nicht-elektrisch.After the foregoing, the
Claims (14)
- Ventilation module (10) for an internal combustion engine, including an oil separator (13) comprising an oil return (17) and a non-return valve (20) located in the oil return (17), wherein the non-return valve (20) includes:- a valve housing (27);- a valve body (37) which is mounted in the valve housing (27) so as to be movable as a whole between an open position and a closed position;- wherein the valve body (37) in the non-operated state of the internal combustion engine is maintained in the open position due to gravity and free from preloads;- wherein the valve body (37) during operation of the internal combustion engine is in the open position irrespective of the applied gas pressure in case a defined liquid level in the valve housing (27) is not exceeded, and- the valve body (37) is configured to automatically move to the closed position due to buoyant lift in case a defined liquid level in the valve housing (27) is exceeded,- wherein the discharge side of the valve (20) is designed to be connected to an oil return line (65) ending below an oil level (66),wherein a separate orifice (77) comprising a through opening (82) is located at the inlet side of the valve, which orifice forms a valve seat for the valve body (37), characterized in that the ventilation module (10) includes a sealing element (12) sealing the oil return (17), which sealing element is press-fitted between the ventilation module (10) and an engine component (38) when the ventilation module (10) is mounted,
and the valve housing (27) forms a projection (79) bearing the orifice (77), or the orifice (77) bears against the bottom of an annular projection (94) at the upper end of the valve chamber (50) where it is connected to the valve housing (27). - Ventilation module according to claim 1, characterized in that the orifice bears against the valve housing (27).
- Ventilation module according to claim 1 or 2, characterized in that the diameter of the orifice (77) is chosen to be small enough so that the gravity acting on the valve body (37) is greater than the sum of maximum suction force and maximum retaining force by an oil film.
- Ventilation module according to one of the claims 1 to 3, characterized in that the orifice (77) on its outer circumference comprises at least one sealing edge (80) which sealingly interacts with the valve housing (27) through deformation.
- Ventilation module according to one of the claims 1 to 4, characterized in that a downholder (81) is provided for retaining the orifice (77) in an operational position.
- Ventilation module according to one of the claims 1 to 5, characterized in that the orifice (77) and/or the valve body (37) are made from a non-reinforced or ball-reinforced thermoplastic.
- Ventilation module according to any one of the preceding claims, characterized in that the valve body (37) can be inserted freely into and removed freely from the valve housing (27) at the discharge side.
- Ventilation module according to any one of the preceding claims, characterized in that a securing means (92) is attached to the discharge side end of the valve housing (27) .
- Ventilation module according to claim 8, characterized in that the securing means (92) is a lid which can be pulled over the discharge side end of the valve housing (27).
- Ventilation module according to one of the claims 8 or 9, characterized in that a radial offset (98) is provided on the valve housing (27), wherein a groove (87) is formed axially between the offset (98) and the securing means (92) for mounting the sealing element (12).
- Ventilation module according to any one of the preceding claims, characterized in that the valve housing (27) is formed integrally from the housing (11) of the ventilation module (10).
- Ventilation module according to any one of the preceding claims, characterized in that axial wings (73) are provided on the valve body (37) and/or on the valve housing (27) to hold the valve body (37) in a defined position in the valve housing (27).
- Ventilation module according to any one of the preceding claims, wherein the valve body (37) is open towards the discharge side, characterized in that the hollow space volume of the valve body (37) is chosen in such a way that the valve body at a 15 % oil charge still provokes sufficient buoyant lift to close the valve (20).
- Ventilation module according to any one of the preceding claims, characterized in that the engine component (38) is a cylinder head (60), a closed cam carrier (48) or a cover on one side of the engine.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14187950.2A EP2937533B1 (en) | 2014-04-24 | 2014-10-07 | Ventilation module for a combustion engine |
CN201580054419.8A CN106795789B (en) | 2014-10-07 | 2015-10-02 | Vent Module for internal combustion engine |
US15/517,736 US20170306816A1 (en) | 2014-10-07 | 2015-10-02 | Ventilation module for an internal combustion engine |
PCT/EP2015/072811 WO2016055373A1 (en) | 2014-10-07 | 2015-10-02 | Venting module for an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14165802 | 2014-04-24 | ||
EP14187950.2A EP2937533B1 (en) | 2014-04-24 | 2014-10-07 | Ventilation module for a combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2937533A1 EP2937533A1 (en) | 2015-10-28 |
EP2937533B1 true EP2937533B1 (en) | 2017-12-20 |
Family
ID=54207539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14187950.2A Active EP2937533B1 (en) | 2014-04-24 | 2014-10-07 | Ventilation module for a combustion engine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20170306816A1 (en) |
EP (1) | EP2937533B1 (en) |
CN (1) | CN106795789B (en) |
WO (1) | WO2016055373A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170204905A1 (en) | 2016-01-19 | 2017-07-20 | Paranetics, Inc. | Methods and apparatus for generating magnetic fields |
JP6939464B2 (en) * | 2017-11-21 | 2021-09-22 | いすゞ自動車株式会社 | Blow-by gas reduction system |
CN109404577A (en) * | 2018-12-24 | 2019-03-01 | 绵阳富临精工机械股份有限公司 | A kind of one-way valve structures |
US11293315B1 (en) * | 2020-12-31 | 2022-04-05 | Sogefi Air & Cooling Usa, Inc. | Air-oil separator drain valve and related method of use |
DE102021118747B3 (en) | 2021-07-20 | 2022-10-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Oil pipe for a cylinder head of an internal combustion engine, and a cylinder head for an internal combustion engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2818653A1 (en) * | 2013-06-25 | 2014-12-31 | Dichtungstechnik G. Bruss GmbH & Co. KG | Check valve for oil return in the crankcase ventilation system of an internal combustion engine |
Family Cites Families (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB561033A (en) * | 1942-12-03 | 1944-05-02 | George Stanley Campbell | A device for removing and utilising unvapourized fuel in the lubricating oil, in the sumps of internal combustion engines |
US3765386A (en) * | 1971-06-16 | 1973-10-16 | F Ottofy | Anti-pollution device for and method of removing oil from air vented from the crankcase of an internal combustion engine and returning the oil to the crankcase |
US3941145A (en) * | 1974-08-05 | 1976-03-02 | Continental Industries, Inc. | Safety valve |
US4602595A (en) | 1984-03-01 | 1986-07-29 | Aisin Seiki Kabushiki Kaisha | Oil separator for internal combustion engine |
US4637426A (en) * | 1985-11-12 | 1987-01-20 | Lyon Ronald J | Fill control valve |
US4735226A (en) * | 1986-03-07 | 1988-04-05 | Stant Inc. | Anti-lift roll-over valve |
DE4214324C2 (en) | 1992-04-30 | 1998-04-30 | Knecht Filterwerke Gmbh | Device for separating oily aerosols |
DE19515482C2 (en) | 1995-04-27 | 1997-07-10 | Hengst Walter Gmbh & Co Kg | Device for returning oil from an oil separator |
DE29605425U1 (en) | 1996-03-23 | 1996-06-13 | Ing. Walter Hengst GmbH & Co KG, 48147 Münster | Drain valve for oil separators |
DE19628812B4 (en) | 1996-07-17 | 2009-01-15 | Robert Bosch Gmbh | Oil separation system of an internal combustion engine |
DE19918311A1 (en) | 1999-04-22 | 2000-11-02 | Hengst Walter Gmbh & Co Kg | Process for de-oiling crankcase ventilation gases and devices for carrying out the process |
US6478019B2 (en) * | 1999-09-01 | 2002-11-12 | Nelson Industries, Inc. | Flat low profile diesel engine crankcase ventilation filter |
DE20217601U1 (en) | 2002-11-14 | 2004-04-01 | Hengst Gmbh & Co.Kg | Filter for an internal combustion engine has a drain valve and two passage openings fitted one after the other in the flow direction of a substance to be drained off |
DE20302911U1 (en) | 2003-02-22 | 2004-07-01 | Hengst Gmbh & Co.Kg | Valve for motor vehicle internal combustion engine has oil collecting chamber with actuator for valve contained in casing |
ITRE20030035A1 (en) | 2003-04-09 | 2004-10-10 | Ufi Filters Spa | "SEPARATOR OF DIFFERENT DENSITY FLUIDS" |
DE10362162B4 (en) | 2003-05-05 | 2008-04-17 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Oil separation device for an internal combustion engine |
DE102004002310A1 (en) | 2004-01-16 | 2005-08-04 | Robert Bosch Gmbh | Device for separating liquid from a gas stream |
DE202004004802U1 (en) | 2004-03-26 | 2004-06-17 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Oil return apparatus for recirculating oil disposed of in blow by gases during operation of a combustion engine |
DE102004018567B3 (en) | 2004-04-16 | 2005-12-15 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Reflux check valve (between an outlet and an inlet with magnetic material), useful in oil separator arrangement, comprises valve unit and reset mechanism, which magnetically cooperates with valve unit to externally control check valve |
DE202004010550U1 (en) | 2004-07-06 | 2005-11-17 | Hengst Gmbh & Co.Kg | Device for regulating the pressure in the crankcase of an internal combustion engine and for the oil mist separation from the crankcase ventilation gas |
DE102004061938B3 (en) | 2004-12-22 | 2006-06-29 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Oil separating system for internal combustion engine e.g. Otto engine, has oil separator for oil that is separated from blow-by-gases in crank case, and pressure control valve to control pressure in crank case |
DE102006018783A1 (en) | 2005-04-22 | 2007-02-08 | Mann + Hummel Gmbh | Valve in crankcase venting system, used to return intercepted oil to sump, is associated with float assuring reliable closure under unfavorable differential pressure conditions |
US20070065615A1 (en) * | 2005-09-16 | 2007-03-22 | Odle Roy R | Annular or tubular shaped articles of novel polymer blends |
US20070102458A1 (en) * | 2005-11-10 | 2007-05-10 | Spraying Systems Co. | Spray gun for dispensing precise small liquid volumes |
CN100383365C (en) * | 2006-03-08 | 2008-04-23 | 无锡开普动力有限公司 | Air-exchanging structure of crank case of four-stroke engine |
CN200999639Y (en) * | 2006-03-08 | 2008-01-02 | 无锡开普动力有限公司 | Crankshaft case air changing structure of four-stroke cycle engine |
JP2007282747A (en) | 2006-04-14 | 2007-11-01 | Juki Corp | Sewing machine |
DE102006038700B4 (en) | 2006-08-18 | 2021-11-11 | Polytec Plastics Germany Gmbh & Co. Kg | Device for separating liquids from gases |
DE102007058059B4 (en) | 2007-01-26 | 2015-06-11 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Oil separator arrangement and cylinder head cover for an internal combustion engine |
DE102007008672A1 (en) | 2007-02-20 | 2008-09-04 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Cylinder head cover for an internal combustion engine |
US7878181B2 (en) * | 2007-07-31 | 2011-02-01 | Illinois Tool Works Inc. | Fuel delivery module regulator valve |
DE202007011585U1 (en) | 2007-08-17 | 2007-10-18 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Oil return valve for crankcase ventilation |
JP2009203977A (en) * | 2008-02-01 | 2009-09-10 | Honda Motor Co Ltd | Breather device for internal combustion engine |
DE102008019293A1 (en) | 2008-04-16 | 2009-10-22 | Dichtungstechnik G. Bruss Gmbh & Co. Kg | Device for returning oil separated from blow-by gases and collected in a collecting space |
DE102008058962A1 (en) * | 2008-11-25 | 2010-05-27 | Hengst Gmbh & Co.Kg | Crankcase ventilation device of an internal combustion engine |
JP5893564B2 (en) | 2010-09-10 | 2016-03-23 | オリンパス株式会社 | Optical analysis method using optical measurement in multiple wavelength bands |
CN103591339B (en) * | 2012-08-15 | 2018-11-16 | 保利达塑料德国有限两合公司 | Check-valves |
US9140153B2 (en) * | 2013-06-05 | 2015-09-22 | Ford Global Technologies, Llc | Engine system having a backflow valve and method for operation thereof |
-
2014
- 2014-10-07 EP EP14187950.2A patent/EP2937533B1/en active Active
-
2015
- 2015-10-02 US US15/517,736 patent/US20170306816A1/en not_active Abandoned
- 2015-10-02 WO PCT/EP2015/072811 patent/WO2016055373A1/en active Application Filing
- 2015-10-02 CN CN201580054419.8A patent/CN106795789B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2818653A1 (en) * | 2013-06-25 | 2014-12-31 | Dichtungstechnik G. Bruss GmbH & Co. KG | Check valve for oil return in the crankcase ventilation system of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
CN106795789B (en) | 2019-06-11 |
EP2937533A1 (en) | 2015-10-28 |
US20170306816A1 (en) | 2017-10-26 |
CN106795789A (en) | 2017-05-31 |
WO2016055373A1 (en) | 2016-04-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2937533B1 (en) | Ventilation module for a combustion engine | |
DE602004006277T2 (en) | FILTER ARRANGEMENT WITH BLEED FILTER ELEMENT | |
DE102005021278B4 (en) | Device for cleaning gas when venting a crankcase | |
EP1174597B1 (en) | Assembly for a combustion engine with an oilfilter | |
DE112013005747B4 (en) | Filter, filter element, filter housing and discharge device of a filter | |
EP2133061B1 (en) | Ventilation device for a drink bottle | |
DE19961580A1 (en) | Liquid filter with drain for liquid residues | |
WO2002095211A1 (en) | Method for evacuating water that has been separated in a fuel filter and a device for carrying out said method | |
DE202005007872U1 (en) | Filter device, in particular for liquid filtration in internal combustion engines | |
EP1402156B1 (en) | Oil separating device for crankshaft gases of an internal combustion engine | |
EP2818653B1 (en) | Check valve for oil return in the crankcase ventilation system of an internal combustion engine | |
DE112016005275T5 (en) | FILTER SYSTEM WITH A SELF-VENTILATION PROCESS | |
DE102011109164A1 (en) | Air- and dirt separator useful for water technology and in sanitary and heating industry, comprises hollow cylindrical pot, which is downwardly conically tapered or collecting container, bottom cover and screw cap with brushes | |
DE102014013628A1 (en) | Water separator with water overflow protected by float valve | |
EP3207227B1 (en) | Drainage device | |
DE102013013487A1 (en) | Liquid filter, in particular fuel filter | |
DE102016203893A1 (en) | separating | |
DE202004017745U1 (en) | Coolant care unit with return valve | |
WO2016008605A1 (en) | Oil filter device and housing cover and housing pot of an oil filter device | |
DE102020119668B4 (en) | Internal combustion engine with at least two oil separators | |
EP3558485A1 (en) | Fluid outflow control by means of a sealing assembly | |
EP3727641B1 (en) | Filter system with non-return valve and filter element | |
DE102017205899B3 (en) | Condensate drain valve for a compressed air maintenance device and maintenance device for compressed air treatment | |
EP1600685B1 (en) | Combination of a heating apparatus and a closure for a condensate removal device | |
EP3250797B1 (en) | Internal combustion engine comprising an oil return line having an oil duct |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
17P | Request for examination filed |
Effective date: 20151203 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: BRUSS SEALING SYSTEMS GMBH |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20170718 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 956592 Country of ref document: AT Kind code of ref document: T Effective date: 20180115 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502014006637 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20171220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180320 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180321 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180320 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180420 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502014006637 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20180921 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20181007 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20181031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181007 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181031 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181031 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181031 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181007 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181007 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171220 Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20141007 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20171220 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 956592 Country of ref document: AT Kind code of ref document: T Effective date: 20191007 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191007 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20231018 Year of fee payment: 10 |