CS276476B6 - Rocker mechanism - Google Patents

Rocker mechanism Download PDF

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Publication number
CS276476B6
CS276476B6 CS891610A CS161089A CS276476B6 CS 276476 B6 CS276476 B6 CS 276476B6 CS 891610 A CS891610 A CS 891610A CS 161089 A CS161089 A CS 161089A CS 276476 B6 CS276476 B6 CS 276476B6
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Czechoslovakia
Prior art keywords
rocker
cradle
axis
cylindrical surface
valve
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CS891610A
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Czech (cs)
Slovak (sk)
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CS161089A3 (en
Inventor
Miroslav Ing Manduch
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Zts Turcianske Strojarne
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Priority to CS891610A priority Critical patent/CS276476B6/en
Publication of CS161089A3 publication Critical patent/CS161089A3/en
Publication of CS276476B6 publication Critical patent/CS276476B6/en

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Abstract

Vahadlový mechanizmus tvoři vaTiadlo (1) opierajúce sa o opierku (5) ležiacu v koliske (8). Posuvné uloženie opierky {5} a otočné uloženie kolisky (8) umažnujú změnu časovania a zdvihu ventilu. Vahadlo (1) má prodnú část tvorenú častou valca s válcovou plochou (3) s osou •kolmou na os ventilu (12) a plochou ložiska (2) so stredom křivosti ležiacim na osiwvalca válcovéj plochy (3). Vrchnú část vahadla (1) tvoři odvalovacia plocha (4) spojená s válcovou plochou (3) a spolu tvoria válcová plochu s tvo- , riacou křivkou 3pojitou aspoň do 2. rádu. Vahadlo (1) sa dotýká opierky (5) ležiacej v koliske (8) uloženej v hlavě valcov (18).The rocker mechanism consists of a rocker arm (1) resting on a support (5) lying in a roller (8). The sliding support {5} and the rotating support of the roller (8) enable the valve timing and lift to be changed. The rocker arm (1) has a front part formed by a part of a cylinder with a cylindrical surface (3) with an axis perpendicular to the valve axis (12) and a bearing surface (2) with a center of curvature lying on the axis of the cylindrical surface (3). The upper part of the rocker arm (1) is formed by a rolling surface (4) connected to the cylindrical surface (3) and together they form a cylindrical surface with a continuous curve of at least the 2nd order. The rocker arm (1) touches the support (5) lying in a roller (8) located in the cylinder head (18).

Description

CS 275 4 TG. BSCS 275 4 TG. BS

Vynáloz sa týks vahadlového mechanizmu vo ventilových razvodoch plastových strojov.The invention relates to a rocker mechanism in valve valves of plastic machines.

Napriek známým výhodám sa ovládania ča3ovania a zdvihu ventilového rozvodu u sério-vo vyrábaných motorov nepoužívá, lebo takéto zariadonia sá zložité a neuspokojivé vyrie-šené. U drahých výkonných motorov sa stálo častejšie objavujo měnitelné časovanie ven-tilového rozvodu, Najjednoduchši sposob jo využivajúci mechanizmus, ktorý natáča celývačkový hriadel, čím mění časovanie presúvaním zdvihu. čalším sposobom je využitie pries-torovej vačky, která sa axiálně posúva. Vačka je výrobně náročná a nio je doriešoný pro-blém opotrebovania dotykových ploch. Tvarom vačky je daná závislost časovania a zdvihuventilu. Obdobné výsledky docielime sposobom podobným rozvodu OHC s vloženým vahadlemmodzi ventil a vačku, ktorá kmitá, Oviádanie sa docieluje přestavením vahadla. Oo snahavyriošit nezávislé oviádanie časovania a zdvihu ventilu s vhodnějším sposobom regulácie.Oedno z riesení je hydraulické oviádanie ventilov. Riešenie naráža na problém docieleniapresno daného priebohu otvórania a zatvárania ventilu, k čomu pristupujú problémy pro-'vádzkové, odvzudšnenio, neteshosT a stuhnutio oleja pri nízkých teplotách. Perspektivnýmriešením sa javí, vzhladom na velký pokrok elektrotechniky, elektromagnetické otváranieventilov. Pokusné vyhotovonie je zložité a rozmerovo nepřijatelné.In spite of the known advantages, the control of the timing and stroke of the valve manifold is not used in series-produced engines, since such equipment is complex and unsatisfactory to be solved. In expensive high-performance motors, variable timing of the exhaust pipe has become more frequent, the simplest way utilizing a mechanism that swivels the full-length shaft, thereby changing the stroke timing. another way is to use a space cam that moves axially. The cam is demanding in production and the nio is solved by the problem of wear on the contact surfaces. Depending on the cam, the timing and stroke dependence of the valve is given. Similar results can be achieved by a similar way to OHC with an interposed valve, the valve and cam that oscillate. Control is achieved by adjusting the rocker arm. It is desirable to provide independent control of the timing and stroke of the valve with a more appropriate control method. One of the solutions is hydraulic valve control. The problem encounters the problem of achieving a precise opening and closing of the valve, which is solved by problems of operating, dehumidifying, and non-solidifying the oil at low temperatures. In view of the great advances in electrical engineering, the electromagnetic opening of the valves appears to be a prospective solution. Experimental work is complex and unacceptable.

Podstata vynálezu spočívá v zaradeni upraveného vahadla 3 opierkou a kolískou do rozvo-dového mechanizmu. Priamočiary vratný pohyb vyvodený vačkou je přenesený na vahadle dotý-kajúce sa opierky. Zdvih ventilu začina v miesto přechodu čelnaj plochy vahadla do jehoodvalovacej plochy, pokračuje maximálnym zdvihom a uzavrie ventil v bode začatia zdvihu.Velkost zdvihu sa ovládá priamočiarym posúvaním opierky po dosadacich plochách kolisky.časovanie sa ovládá natočením kolisky s opierkou okolo osi vazbového prvku kolisky a zdvihsa musí kompenzoval posúvaním opierky. Ocdnoduchšie riešenia sú vytvořené nepohyblivýmspojením kolisky s hlavou valcov, nepohyblivým spojením opierky s koliskou, alebo ichkombináciou. Oednoduchsio riešenie má zničený účinok. Riešenie so všeobecnou vazbou medzívahadlom a rozvodovou tyčkou představuje 3alšiu možnost ovládania. Podlá zložitosti rieše-nia dociolime závislú, alebo nezávislá změnu časovania a zdvihu ventilu. Použltie klukové-ho mechanizmu miesto vačkového hriadela zjednoduší riešenie. Trvalé otvorenie ventilu mož-no dociolit otočením kolisky do polohy trvalého uzavretia ventilu a jeho nasledovným ot-voroním samostatným mechanizmom.SUMMARY OF THE INVENTION The present invention is based on the provision of a modified rocker arm 3 by means of a support and a cradle in the distribution mechanism. The rectilinear reciprocating motion exerted by the cam is transferred to the rocker arm abutting the support. The stroke of the valve begins at the point of transition of the rocker head face to its rolling surface, continues with the maximum stroke and closes the valve at the stroke start point. The stroke is controlled by a linear displacement of the support on the contact surfaces. must compensate by sliding the head restraint. The simpler solutions are formed by the stationary connection of the collector with the cylinder head, the immovable connection of the support to the collector, or a combination thereof. A simple solution has a devastated effect. The general link-to-splitter linkage solution is a 3-way control option. Depending on the complexity of the solution, the dociolime dependent or independent change in the timing and stroke of the valve. The use of a crank mechanism instead of a camshaft will simplify the solution. Permanent opening of the valve can be achieved by rotating the collector to the position of permanent closing of the valve and its subsequent open mechanism.

Použitis vahadlového mechanizmu vo ventilových rozvodoch umožňuje nezávislé oviáda-nie časovania a Zdvihu, 3 trvalým uzavretim, alebo otvorením ventilu. Využitím nesymetric-ké j vačky možme dociolit nesymetrická změnu časovania otvárenia a zatvárania ventilu. Oed-noduchšími riešeniami docielujeme závislú změnu časovania a zdvihu. Použitím klukovéhomechanizmu miesto vačkového hriadelu sa docieli výrobně a konštručné zjednodušenio. Oviá-danie ventilov optimalizuje prácu piestového stroja, pracujúceho s premenlivým zataženímv roznych otáčkách. Oocieli zvýšenie krútiaceho momentu, výkonu, zlepšenie pružnosti mo-tora a zniženie spotřeby paliva. Umožni zniženíe škodlivin vo výfukových plynoch, regulá-ciu recirkulácie spalin, vyplnanie valcov, lepšie rozvlrenie náplně v nízkých otáčkách.The use of the rocker mechanism in the valve manifold allows independent timing and stroke control, 3 by permanent closing, or valve opening. By using unsymmetrical cams, we can change the unsymmetrical change in the timing of the opening and closing of the valve. Simpler solutions provide a dependent change in timing and stroke. By using a crank mechanism instead of a camshaft, simplified production and construction are achieved. Valve control optimizes the operation of the piston machine operating with variable loading at different speeds. Increased torque, power, improved engine flexibility and reduced fuel consumption. It will allow the reduction of pollutants in the exhaust gases, the regulation of the exhaust gas recirculation, the filling of the cylinders, the better the spinning of the filling at low speed.

Na oripojenom výkrese je znázorněný rez bokorysu rozvodového mechanizmu 3 novým va-hadlovým mechanizmom, kde vačka 15 poháňa vahadlo _1 prostrednictvom zdvihátka 14 a roz-vodovoj tyčky 13, pričom pružina 15 zabezpečuje stály kontakt tejto časti mechanizmu 3vačkou 15. Vahadlo 1 sa opiora o opierku 5 ležiacu svojou vrchnou klznou plochou 7 naklznýcb plochách 9 kolisky £ uloženej prostrednictvom vazbového prvku 10 v hlavě valcov15. Vahadlo j. prenáša priamočiary pohyb na ventil 12 prostrednictvom ložiska 11. ulože-ného v ploché ložiska 2. Pružina 17 uzatvára ventil 12. V čase ke3 je ventil uzavretý savahadlo j. kíže Čelnou plochou 3 po odvalovacej ploché 6 opierky £. Zdvih ventilu 12 na-o.téva v miesto přechodu čelnoj plochy 3 vahadla ,1 do jeho odvalovacej plochy 4. Vahadlo2 sa počas zdvihu odvaluje po opierke 5. VelkosT zdvihu ventilu 12 ovládáme priamočia-rýra posuvem opierky 5 v 3inere šipky 20, čo umožni tvar klznej plochy 7 opierky 5. časů-vanie ovládáme otáčanim opiorky s kolískou 8 okolo osi vazbového prvku 10, tvořenéhočapom, v smere šipok 21, čim sa meni aj zdvih, ktorý eliminuje posuvům opierky 5, Ovládá-In the attached drawing, there is shown a sectional side view of the timing mechanism 3 with a new hose mechanism, where the cam 15 drives the rocker 1 by means of a plunger 14 and a spreader bar 13, the spring 15 providing a permanent contact of this part of the mechanism with a roller 15. 5 lying with its upper sliding surface 7 of the tumbling surfaces 9 of the collector 9 supported by the coupling element 10 in the cylinder head 15. The rocker 10 transmits a linear movement to the valve 12 through a bearing 11 housed in a flat bearing 2. The spring 17 closes the valve 12. At the time k e3, the valve is closed by the handle 1 by the front face 3 to the rolling flat 6 of the support. Lifting the valve 12 on the valve at the junction point of the rocker face 3 into its rolling surface 4. The rocker 2 rolls during the stroke on the armrest 5. The stroke size of the valve 12 is controlled by a straight line by moving the armrest 5 in the arrow 20 to allow the shape of the sliding surface 7 of the armrest 5 is controlled by turning the abutment with the cradle 8 around the axis of the coupling element 10 formed by the pin in the direction of the arrows 21, thereby changing the stroke which eliminates the displacements of the armrest 5

Claims (7)

PATENTOVÉ NÁROKYPATENT CLAIMS 1. Vahadlový mechanizmus ventilového rozvodu piestových strojov složený z vahadla odvalujéceho sa po opierkě klzne uloženej v kolíske, s kolískou výkyvné uloženou v hlavě valcov, kde zadná část vahadla je ovládaná priamočiarym vratným pohybom rozvodu a přetíná část je súvisiáca s ventilom,' vyznačený tým,’ že vahadlo (1) má prednú část tvořenu Častou valca s válcovou plochou (3) s osou kolmou na os ventilu (12) a plochou ložiska (2) so stredom křivosti ležiacim na osi valca valcovoj plochy (3), kde vrchné část vahadla (1) tvoří odvalovacia plocha (4), spojená s válcovou plochou (3) a spolu tvcria válcové plochu s tvoriacou křivkou spojitou aspoň do druhého rádu, ktorou sa vahadlo (1) dotýká čpierky (5) Isžiacej v kolíska (8) uloženej v hlavo valcov (18).A rocker mechanism for a valve train of a reciprocating machine, comprising a rocker rolling on a slide mounted in a cradle, with a rocker pivotally mounted in the cylinder head, the rear part of the rocker being actuated by a rectilinear reciprocating motion of the manifold and the intersecting part being associated with the valve. that the rocker arm (1) has a front part formed by a frequent cylinder with a cylindrical surface (3) with an axis perpendicular to the valve axis (12) and a bearing surface (2) with a center of curvature lying on the cylinder axis of the cylindrical surface (3), (1) forms a rolling surface (4) connected to a cylindrical surface (3) and together forms a cylindrical surface with a forming curve continuous at least to the second order, by which the rocker (1) touches the tip (5) cylinder head (18). 2. Vahadlový mechanizmus podlá bodu 1, vyznačený tým,' že opiorka (5) má tvar lopatky s jednou stranou tvořenou odvalovacou plochou (6) a protilehlou klznou plochou (7) s vazbovým prvkom (19).2. A rocker mechanism according to claim 1, characterized in that the support (5) has the shape of a blade with one side formed by a rolling surface (6) and an opposite sliding surface (7) with a connecting element (19). 3. Vahadlový mechanizmus podlá bodu 1 a 2, vyznačený tým, že kolíska (8) má tvar strmena s klznou plochou (9) umiestnenou medzi ramenami a na ramsnách umiestncným výkyvným vazbovým prvkom (10), kterého os kývania je totožná s osou valca valcovej plochy (3) vahadla (1), ko3 Sa válcová plocha (3) dotýká odvalovacej plochy (6) opisrky (5) a , opierka (5) je klzne uložená v kolíske (8).3. Rocking mechanism according to items 1 and 2, characterized in that the cradle (8) has the shape of a stirrup with a sliding surface (9) located between the arms and a swinging element (10) arranged on the arms, the pivot axis of which is identical with the cylinder axis. the surface (3) of the rocker arm (1), when the cylindrical surface (3) touches the rolling surface (6) of the rim (5) and the support (5) is slidably mounted in the cradle (8). 4. Vahadlový mechanizmus podlá bodu 1 a 2, vyznačený tým, že kolíska (8) má klznú plochu (8) a je nepohyblivo spojená s hlavou valcov £18).4. The rocker mechanism according to items 1 and 2, characterized in that the cradle (8) has a sliding surface (8) and is fixedly connected to the cylinder head (18). 5. Vahadlový mechanizmus podia bou 1, vyznačený tým, že kolíska (8) má tvar strmena s na ramenách umiostneným vazbovým prvkom (10), ktorého os kývania je totožná s osou valca valcovej plochy (3) vahadla (1), ke3 sa válcová plocha (3) dotýká odvalovacej plochy £6) opierky (5), umiestnenej msdzi ramenami, kde opierka (5) s vazbovým prvkom (19) je súčastou kolísky £8).Rocking mechanism according to claim 1, characterized in that the cradle (8) has the shape of a stirrup with a coupling element (10) arranged on the arms, the oscillation axis of which is identical with the axis of the cylinder of the cylindrical surface (3) of the rocker arm (1). the surface (3) touches the rolling surface £ 6) of the support (5) located between the arms, where the support (5) with the coupling element (19) is part of the cradle (8). 6. Vahadlový mechanizmus podlá bodu 1, vyznačený tým, že opierku (5) tvoří odvalovacia plocha (6), kde opierka £5) je súčastou kolísky (8) a kolíska £3) je nepohyblivo spojená s hlavou valcov £18).6. A rocker mechanism according to claim 1, characterized in that the abutment (5) is formed by a rolling surface (6), where the abutment (5) is part of the cradle (8) and the cradle (3) is fixedly connected to the cylinder head (18). 7. Vahadlový mechanizmus podlá bodu 1 až 6, vyznačený tým, že v zatínej časti vahadla (i) je umiestncný posuvný vazbový prvek s vazbovým prvkom £19) k ovládaniu, súvisiaci s rozvodovou tyčkou £13).7. Rocker mechanism according to items 1 to 6, characterized in that in the closing part of the rocker (i) there is a sliding coupling element with a coupling element (19) to be actuated, connected to a timing rod (13).
CS891610A 1989-12-08 1989-12-08 Rocker mechanism CS276476B6 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005010182A1 (en) * 2005-03-03 2006-09-21 Entec Consulting Gmbh Variable mechanical valve control for internal combustion engine has intermediate lever, which is connected to valve push rod by means of shaft, such that slide gate roller, is displaced by camshaft in slide gate
US7624711B2 (en) 2005-03-03 2009-12-01 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005010182A1 (en) * 2005-03-03 2006-09-21 Entec Consulting Gmbh Variable mechanical valve control for internal combustion engine has intermediate lever, which is connected to valve push rod by means of shaft, such that slide gate roller, is displaced by camshaft in slide gate
US7624711B2 (en) 2005-03-03 2009-12-01 Hydraulik-Ring Gmbh Variable mechanical valve control for an internal combustion engine

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CS161089A3 (en) 1992-01-15

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