EP3887655A1 - Ventildrehvorrichtung - Google Patents
VentildrehvorrichtungInfo
- Publication number
- EP3887655A1 EP3887655A1 EP19809051.6A EP19809051A EP3887655A1 EP 3887655 A1 EP3887655 A1 EP 3887655A1 EP 19809051 A EP19809051 A EP 19809051A EP 3887655 A1 EP3887655 A1 EP 3887655A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- plate spring
- rotating device
- collar section
- annular element
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/32—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for rotating lift valves, e.g. to diminish wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
- F01L1/462—Valve return spring arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2303/00—Manufacturing of components used in valve arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2810/00—Arrangements solving specific problems in relation with valve gears
- F01L2810/02—Lubrication
Definitions
- the invention relates to a valve rotating device for a valve, preferably inlet or outlet valve, of an internal combustion engine.
- US 2,827,885 A discloses a valve rotating device with a washer and a plate spring. Since the washer and the plate spring are located under a valve coil spring on the cylinder head, their surfaces are normally supplied with oil from the valve stem and tilt lubrication system. This means that the cylinder head is always supplied with plenty of lubricating oil from the engine lubrication system, so there is always enough oil available to lubricate the surfaces. This oil is pressed out of the space between the surfaces when the spring is compressed. A sufficient delay in this oil leakage between these surfaces occurs, however, so that during part of the valve lift, an oil film is trapped between these surfaces to increase the smooth bearing relationship while in an adapted or parallel relationship with each other.
- US 2,613,656 A also discloses a valve rotating device with a plate spring.
- the plate spring has a normally tapered configuration and the pressure that the valve coil spring exerts on it when the valve is closed is not sufficient to press the plate spring against the contact surface of the cylinder head. Therefore, the outer lower edge of the plate spring in the closed position causes a substantially linear contact with the surface with sufficient pressure to limit the rotation of the plate spring about the valve axis.
- the plate spring collapses, ie. H. it turns into a flattened configuration parallel to the surface.
- the invention has for its object to provide an alternative and / or improved valve rotation device.
- the object is achieved by the features of independent claim 1.
- Advantageous further developments are given in the dependent claims and the description.
- the invention provides a valve rotation device for a valve (e.g. poppet valve), preferably an intake or exhaust valve, of an internal combustion engine.
- the valve rotating device has a valve return spring (e.g. in the form of a coil spring) for biasing the valve in a direction towards a closed position of the valve.
- the valve rotating device has a plate spring which is arranged in operative connection between the valve return spring and a support surface lubricated with a lubricating fluid (e.g. stationary) (e.g. the valve turning device or a cylinder head).
- the plate spring is designed such that it is compressed (e.g.
- valve return spring when the valve is opened under the force of the valve return spring into a flat shape, preferably parallel to the support surface, and in the flattened form from the lubricating fluid between the plate spring and the support surface is supported in a sliding manner to enable valve rotation (e.g. by means of displacement gens).
- An at least partially, preferably completely, circumferential collar section is arranged on a circumference, preferably the inner circumference, of the plate spring.
- the collar section can expediently reduce wear on the valve rotating device.
- the collar section can prevent, for example, that the disc spring, which rotates in operation, on the inner circumference side not in a further valve element of the valve, e.g. B. cuts a valve guide.
- the collar section can provide a flat, wear-reducing system.
- the collar section is designed so that it holds several separate elements of the valve rotating device captively together, for. B. also the plate spring and the valve return spring.
- assembly of the valve rotating device can be simplified.
- the Kra gene section can appropriately center the plate spring and / or the valve rotating device.
- Belleville spring can refer to an elastically deformable, annular, flattenable element.
- the plate spring has an elastically deformable main body section, preferably having a conical and annular disc shape.
- the collar portion can be angled to the main body portion, for example at an angle of 90 ° ⁇ 50%, preferably 90 ° ⁇ 25%.
- the collar section can extend from the elastic main body. So that can For example, a particularly effective wear reduction can be achieved through the Kragenab cut.
- the collar section delimits the plate spring on its inner circumference.
- the collar section is designed to extend essentially parallel and / or coaxially to a valve axis of the valve and / or a longitudinal axis of a valve body of the valve.
- the collar section is arranged for radially supporting the plate spring, preferably radially with respect to a valve axis of the valve.
- a particularly effective wear reduction can be achieved through the collar section.
- the collar section is arranged for flat contact with a valve element of the valve, preferably a valve guide of the valve.
- the collar section can thus prevent or at least reduce wear of the plate spring on the valve element.
- the plate spring has the collar section.
- the collar section can thus be designed in a simple manner as a section of the plate spring, which is, for example, a sheet metal part.
- a cylinder head has the support surface. This can enable a particularly simple construction of the valve rotating device.
- the valve rotating device has an annular element, preferably a further plate spring or an annular washer.
- the annular element may have the support surface.
- the support surface can thus be provided in a simple manner by the annular element.
- a further, hard and low-wear contact surface or counter surface can be provided by the annular element.
- the annular element can be elastically deformable.
- the ring-shaped element can expediently be supported in a cylinder head, preferably on a bottom surface of a recess in the cylinder head.
- the annular element is arranged in an operative connection between the plate spring and a cylinder head.
- the annular element or the plate spring has the collar section.
- the collar section can thus be either a section of the annular element or the plate spring.
- the annular element has the collar section. Before preferably the collar section can partially encompass the plate spring, preferably on the inside on the circumference. Thus, the annular element can keep the plate spring captive by means of the Kragenab section. This can simplify assembly.
- the plate spring has the collar section. Before preferably the collar section can partially encompass the annular element, preferably as the inner circumferential side. The plate spring can thus hold the annular element captively by means of the collar section. This can simplify assembly.
- the plate spring and the ring-shaped element are held captively together by the collar section. In this way they can preferably form a common assembly unit. This can simplify assembly.
- the assembly unit is designed such that it is in an orientation in which the plate spring is arranged on a side of the assembly unit facing the valve return spring, as well as in an opposite orientation in which the annular element faces that of the valve return spring Side of the mounting unit is arranged, is mountable.
- the mounting unit can thus be mountable on both sides. In this way, incorrect assembly can be prevented in a simple manner.
- the plate spring is arranged in a recess of a cylinder head which can be filled or filled with lubricating fluid.
- a further recess of the cylinder head for the collar section can preferably be arranged in the recess.
- the collar section can expediently be collar-shaped or sleeve-shaped.
- the collar section has a height of between 1 mm and 20 mm, for example.
- the valve rotating device and / or the plate spring can be arranged coaxially with a displaceable valve body of the valve and / or coaxially with a valve guide of the valve.
- the plate spring can contact the valve return spring and / or the support surface.
- annular element may contact the plate spring and / or a cylinder head, preferably a bottom surface of a recess in the cylinder head.
- the disclosure also relates to a cylinder head of an internal combustion engine, the cylinder head having a valve (e.g. intake or exhaust valve), a recess, and a valve rotating device as disclosed herein, which is partially disposed in the recess.
- a valve e.g. intake or exhaust valve
- a recess e.g., a valve rotating device
- the invention also relates to a motor vehicle, preferably a commercial vehicle (for example a truck or bus) with a valve turning device as disclosed herein.
- valve rotation device as disclosed herein for passenger cars, large engines, off-road vehicles, stationary engines, marine engines, etc.
- the preferred embodiments and features of the invention described above can be combined with one another as desired. Further details and advantages of the invention are described below with reference to the accompanying drawings. Show it:
- Figure 1 is a half sectional view of a closed valve with an exemplary Ven tildusvoroplasty according to the present disclosure
- Figure 2 is a half sectional view of an opened valve with the exemplary valve rotation device according to the present disclosure
- Figure 3 is a half sectional view of a closed valve with another exemplary valve rotating device in accordance with the present disclosure
- Figure 4 is a half sectional view of a closed valve with another other exemplary valve rotating device in accordance with the present disclosure.
- the valve 10 can suitably be a valve of an internal combustion engine, e.g. B. reciprocating internal combustion engine.
- the internal combustion engine can be, for example, a diesel, gasoline and / or gas fuel internal combustion engine.
- the valve 10 can preferably connect a fluid channel 12 in a cylinder head 14 of the internal combustion engine and a combustion chamber 16 of the internal combustion engine to one another in the open state or separate them from one another in the closed state.
- valve 10 may be an inlet valve and fluid channel 12 may be an air or air-fuel mixture inlet channel.
- the valve 10 is an outlet valve and the fluid channel 12 is an exhaust gas channel.
- the internal combustion engine can expediently be included in a motor vehicle, preferably a commercial vehicle.
- the valve 10 can be designed, for example, as a poppet valve, as shown.
- the valve 10 has a valve body 18, a valve guide 20, a valve return spring 22 and a valve rotating device 24.
- the function of the valve return spring 22 can also be considered as part of the valve rotating device 24.
- the valve body 18 has a valve stem 26 and a closure part 28 on the combustion chamber side, for example in the form of a plate or disk.
- the valve stem 26 and the closure part 28 are connected to one another, preferably in one piece.
- the valve body 18 can be moved back and forth in the, for example, sleeve-shaped valve guide 20 for opening and closing the valve 10.
- the valve guide 20 can be arranged coaxially to the valve body 18 in the cylinder head 14.
- valve 10 in the closed state of the valve 10, the closure part 28 lies sealingly against a valve seat 30 in the cylinder head 14.
- the valve 10 seals between the fluid channel 12 and the combustion chamber 16.
- the valve 10 is open (see FIG. 2), there is an annular gap between the closure part 28 and the valve seat 30 so that the fluid channel 12 and the combustion chamber 16 are in fluid communication with one another.
- valve 10 can be actuated, for example, by an appropriately mechanical valve train (not shown).
- the valve train can press a free end 32 of the valve stem 26 to open the valve 10 in order to cause the closure part 28 to be lifted off the valve seat 30.
- the valve train can have a force transmission element, for example a rocker arm, rocker arm or tappet, for actuating the valve 10 and a camshaft for actuating the force transmission element.
- actuating devices are used to actuate the valve 10, e.g. B. electromagnetic or electromo toric.
- the valve return spring 22 is operatively connected between the valve body 18 and the cylinder head 14.
- the valve return spring 22 causes the valve 10 to be biased towards the closed state.
- the valve return spring 22 causes the valve 10 to close when it is no longer held open by the valve train.
- the valve return spring 22 can be designed as a coil spring.
- the valve return spring 22 can be arranged coaxially with the valve body 18 and the valve guide 20.
- the valve return spring 22 can be supported on a valve plate 34 of the valve 10.
- the valve plate 34 can be attached to the valve stem 26 at its free end 32, for example by means of a clamping part 36.
- the clamping part 36 can engage, for example, in one or more circumferential grooves on the free end 32 of the valve stem 26. It is also possible for the valve return spring 22 and / or the valve plate 34 to be connected to the valve stem 26 in a different way.
- the valve return spring 22 is supported on the cylinder head 14 by means of the valve rotating device 24.
- the valve rotating device 24 is designed such that it enables the valve return spring 22 or the valve 10 to rotate when the valve 10 is opened and closed.
- the angular momentum for turning can be caused by the helical shape of the valve return spring 22.
- the valve rotating device 24 is at least partially arranged in a recess 38 in the cylinder head 14.
- 38 lubricating fluid for example oil, collects in the recess.
- the lubricating fluid drips into the recess 38 from a valve train arranged above it.
- the valve rotating device 24 has a plate spring 40 and an annular element 42.
- the annular element 42 is designed, for example, as a further plate spring or as an annular washer.
- the plate spring 40 and / or the annular element 42 can each be formed, for example, as a sheet metal part, preferably a sheet metal part.
- the plate spring 40 is arranged between the valve return spring 22 and the annular element 42.
- An upper side of the plate spring 40 contacts the valve return spring 22 on an outer circumferential area of the plate spring 40.
- An underside of the plate spring 40 contacts the annular element 42 on an inner circumferential area of the plate spring 40.
- the annular element 42 is arranged between the plate spring 40 and a bottom surface of the recess 38.
- An upper side of the annular element 42 contacts the plate spring 40 on an inner circumferential area of the annular element 42.
- An underside of the annular element 42 contacts the bottom surface of the recess 38, preferably on an outer circumferential area of the annular element 42.
- the top of the annular element 42 forms a support surface 44 for the plate spring 40.
- the support surface 44 is lubricated with the lubricating fluid in the recess 38.
- the plate spring 40 is designed such that when the valve 10 is opened (see FIG. 2) it is elastically deformed and flattened as a result of the increasing spring force of the valve return spring 22 until it is essentially parallel to the support surface 44. It is possible that the annular element 42 also deforms elastically.
- the lubricating fluid is pressed out of a decreasing gap between the support surface 44 and the underside of the plate spring 40.
- the valve 10 is actuated so quickly that a lubricating fluid film remains between the support surface 44 and the underside of the telescopic spring 40.
- the lubricating fluid film enables the plate spring 40 to be supported on the support surface 44 in an almost friction-free sliding manner to enable rotation of the valve return spring 22 by a so-called displacement support.
- the lubricating fluid film between the underside of the plate spring 40 and the support surface 44 absorbs the valve spring force.
- the plate spring 40 and the annular element 42 are covered by the lubricating fluid film. separated from each other. The friction, especially in the circumferential direction, goes to zero.
- the rotary pulse by compressing the valve return spring 22 can rotate the valve 10. This rotation is, for example, independent of certain speeds and the valve train dynamics.
- the plate spring 40 has an elastically deformable main body portion 48 and a circumferential collar portion 46.
- the main body portion 48 has a tapered and annular disc shape.
- the Kra gene section 46 is arranged on the inner peripheral side of the main body portion 48.
- the Kra gene section 46 extends from the main body portion 48 angled to the main body portion 48th
- the collar portion 46 can allow a flat contact of the plate spring 40 on an outer surface of the valve guide 20. This can prevent the plate spring 40 from cutting successively, for example by machining, during its rotation into the valve guide 20 and thereby wearing both the valve guide 20 and the plate spring 40.
- the collar section 46 thus serves to support the plate spring 40 in a radial direction with respect to a longitudinal axis A of the valve 10.
- the collar section 46 can have a height in the one or two-digit millimeter range, for example.
- annular element it is also possible, for example, for the annular element to have the collar section instead of the plate spring, expediently in order to prevent the plate spring and / or the annular element from being cut into the valve guide.
- FIG. 3 shows a further exemplary embodiment of the valve rotating device 24.
- the collar section 46 of the plate spring 40 is arranged such that it encompasses the annular element 42 on the inner circumference side.
- the collar portion 46 of the plate spring 40 together with the main body portion 48 forms an annular recess in which the ring-shaped element 42 is partially accommodated. So that the annular element 42 of the plate spring 40 can be kept captive ge during the assembly of the valve rotating device 24 ge.
- the annular element 42 and the plate spring 40 can thus form an assembly-friendly, common assembly unit.
- the annular element has the collar section instead of the plate spring.
- the collar section can Partially grasp the plate spring so that the plate spring and the annular element are held captively.
- the assembly unit formed by the plate spring 40 and the annular element 42 can have the further advantage that it can be installed on both sides.
- the assembly unit comprising the plate spring 40 and the annular element 42 can thus be installed both in an orientation in which the plate spring 40 contacts the valve return spring 22 and in an orientation in which the annular element 42 contacts the valve return spring 22 will. This can be expediently further improved because a wrong assembly is excluded.
- a further recess 50 for the collar section 46 is formed in the recess 38, as shown in FIG. 3.
- the further recess 50 can partially accommodate the collar section 46 when the valve 10 is opened.
- FIG. 4 shows a further exemplary embodiment of the valve rotating device 24.
- the valve rotating device 24 only has the plate spring 40.
- the support surface 44 for the plate springs 40 is formed by a bottom surface of the recess 38.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018130098.0A DE102018130098A1 (de) | 2018-11-28 | 2018-11-28 | Ventildrehvorrichtung |
| PCT/EP2019/082237 WO2020109164A1 (de) | 2018-11-28 | 2019-11-22 | Ventildrehvorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3887655A1 true EP3887655A1 (de) | 2021-10-06 |
| EP3887655B1 EP3887655B1 (de) | 2023-01-04 |
Family
ID=68655539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19809051.6A Active EP3887655B1 (de) | 2018-11-28 | 2019-11-22 | Ventildrehvorrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11486276B2 (de) |
| EP (1) | EP3887655B1 (de) |
| CN (1) | CN112771251B (de) |
| DE (1) | DE102018130098A1 (de) |
| WO (1) | WO2020109164A1 (de) |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2613656A (en) | 1950-02-23 | 1952-10-14 | Gen Motors Corp | Belleville rotator and spring surge damper |
| FR1048649A (fr) * | 1951-10-19 | 1953-12-23 | Thompson Prod Inc | Perfectionnements à un appareil destiné à faire tourner une soupape |
| US2775959A (en) * | 1953-12-28 | 1957-01-01 | Gen Motors Corp | Valve rotator |
| US2835236A (en) * | 1954-03-16 | 1958-05-20 | Gen Motors Corp | Valve rotator |
| US2758583A (en) * | 1954-08-04 | 1956-08-14 | Thompson Prod Inc | Valve rotating device |
| US2766746A (en) * | 1954-09-24 | 1956-10-16 | Gen Motors Corp | Valve rotating mechanism |
| US2827885A (en) | 1955-02-08 | 1958-03-25 | Gen Motors Corp | Valve rotation device |
| US2819706A (en) * | 1955-09-30 | 1958-01-14 | Thompson Prod Inc | Valve rotating device |
| US2827886A (en) * | 1956-01-19 | 1958-03-25 | Gen Motors Corp | Valve rotator |
| US3564579A (en) * | 1969-04-25 | 1971-02-16 | Eaton Yale & Towne | Valve rotating device |
| DE1955820B1 (de) * | 1969-11-06 | 1971-08-26 | Teves Thompson Gmbh | Vorrichtung zum Drehen eines Tellerventils fuer Brennkraftmaschinen |
| BE767197R (nl) | 1970-05-22 | 1971-10-01 | Graeve Liliane De | Handelswijze en middelen tot het vervaardigen van buizen in plastiekschuim met kompakte en gladde binnen- en |
| DE2053325A1 (de) * | 1970-10-30 | 1972-05-04 | Daimler Benz Ag, 7000 Stuttgart | Vorrichtung zum Erzeugen einer Dreh bewegung bei einem Ventil einer Brenn kraftmaschine |
| DE2152346A1 (de) * | 1971-10-21 | 1973-04-26 | Schaeffler Ohg Industriewerk | Vorrichtung zum drehen eines ventils |
| US4175505A (en) * | 1976-11-11 | 1979-11-27 | Honda Giken Kogyo Kabushiki Kaisha | Valve rotator assembly |
| GB2040399B (en) * | 1979-01-11 | 1983-01-26 | Fjr Eng Ltd | Valve rotator |
| JPH11324619A (ja) * | 1998-05-07 | 1999-11-26 | Fuji Oozx Inc | 内燃機関用バルブローテータ |
| EP1167699B1 (de) * | 2000-06-26 | 2005-09-28 | TRW Deutschland GmbH | Ventildrehvorrichtung |
| CN201372828Y (zh) * | 2009-03-13 | 2009-12-30 | 南车戚墅堰机车有限公司 | 气门旋转机构 |
| CN202493309U (zh) * | 2012-01-12 | 2012-10-17 | 北京特冶工贸有限责任公司 | 一种结构紧凑型内燃机气门旋转机构 |
| DE102012216893A1 (de) * | 2012-09-20 | 2014-04-03 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Klappenventil |
-
2018
- 2018-11-28 DE DE102018130098.0A patent/DE102018130098A1/de not_active Withdrawn
-
2019
- 2019-11-22 US US17/298,302 patent/US11486276B2/en active Active
- 2019-11-22 EP EP19809051.6A patent/EP3887655B1/de active Active
- 2019-11-22 WO PCT/EP2019/082237 patent/WO2020109164A1/de not_active Ceased
- 2019-11-22 CN CN201980062373.2A patent/CN112771251B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20210388742A1 (en) | 2021-12-16 |
| WO2020109164A1 (de) | 2020-06-04 |
| US11486276B2 (en) | 2022-11-01 |
| DE102018130098A1 (de) | 2020-05-28 |
| BR112021006304A2 (pt) | 2021-07-06 |
| EP3887655B1 (de) | 2023-01-04 |
| CN112771251B (zh) | 2024-05-14 |
| CN112771251A (zh) | 2021-05-07 |
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