DE10357552A1 - Valve drive for an internal combustion engine comprises a housing surrounding a gas-exchange valve shaft and having a radially inward-protruding shoulder at an opening, and a centering element fixed on a valve shaft guide and the shoulder - Google Patents
Valve drive for an internal combustion engine comprises a housing surrounding a gas-exchange valve shaft and having a radially inward-protruding shoulder at an opening, and a centering element fixed on a valve shaft guide and the shoulder Download PDFInfo
- Publication number
- DE10357552A1 DE10357552A1 DE10357552A DE10357552A DE10357552A1 DE 10357552 A1 DE10357552 A1 DE 10357552A1 DE 10357552 A DE10357552 A DE 10357552A DE 10357552 A DE10357552 A DE 10357552A DE 10357552 A1 DE10357552 A1 DE 10357552A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- opening
- housing
- centering element
- gear according
- 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.)
- Withdrawn
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
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
- F01L1/462—Valve return spring arrangements
- F01L1/465—Pneumatic 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/143—Tappets; Push rods for use with overhead camshafts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
Die Erfindung betrifft einen Ventiltrieb für eine Brennkraftmaschine mit den Merkmalen aus dem Oberbegriff des patentanspruchs 1.The The invention relates to a valve train for an internal combustion engine with the features of the preamble of patent claim 1.
Sie
geht von der deutschen Offenlegungsschrift
Nachteilig bei der beschriebenen Ausgestaltung ist ein hoher mechanischer Fertigungsaufwand, um alle Bauteile, insbesondere das Gehäuse mit allen darin angeordneten Bauteilen präzise koaxial zu positionieren.adversely in the described embodiment is a high mechanical manufacturing effort to all components, in particular the housing with all arranged therein Components precisely coaxial to position.
Aufgabe der vorliegenden Erfindung ist es, die Zentrierung einer gattungsgemäßen hydraulischen Rückstellfeder für einen Einbau in einem Zylinderkopf zu vereinfachen.task The present invention is the centering of a generic hydraulic Return spring for one To simplify installation in a cylinder head.
Diese Aufgabe wird durch die Merkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst.These The object is achieved by the features in the characterizing part of the claim 1 solved.
Durch die vorgeschlagene Ausgestaltung ist es möglich, die Ventilschaftführung in üblicher Art und Weise in einem Zylinderkopf zu verbauen, anschließend das Gehäuse der pneumatischen Rückstellfeder in eine Bohrung in dem Zylinderkopf einzusetzen und anschließend durch die Montage des Zentrierelementes auf die Ventilschaftführung alle aneinander grenzenden Bauteile gleichzeitig zu zentrieren und gegen das Gehäuse abzudichten. Ferner wird gleichzeitig eine präzise Führung des Ventilfedertellers in dem Gehäuse erzielt.By the proposed embodiment, it is possible, the valve stem guide in the usual Way to build in a cylinder head, then the casing the pneumatic return spring Insert into a hole in the cylinder head and then by the assembly of the centering on the valve stem guide all together Center adjacent components simultaneously and seal against the housing. Furthermore, at the same time becomes a precise guide achieved the valve spring in the housing.
Gemäß Patentanspruch 2 können unterschiedliche Fertigungsverfahren für die vorgeschlagene pneumatische Ventilfeder eingesetzt werden. So können neben beispielsweise Presspassungen oder Bayonettverschlüssen gemäß Patentanspruch 3 auch Gewinde zur Montage vorgesehen werden.According to claim 2 can different manufacturing processes for the proposed pneumatic Valve spring can be used. So can beside for example press fits or Bayonettverschlüssen according to claim 3 Also threads are to be provided for mounting.
Die Anordnung gemäß Patentanspruch 4 ermöglicht eine einfache Druckluftversorgung der pneumatischen Ventilfeder durch den Zylinderkopf. Ferner kann bei entsprechender mechanischer Dimensionierung der Gaszuführöffnung, diese in vorteilhafter Weise als weiteres Zentrierelement verwendet werden.The Arrangement according to claim 4 allows a simple compressed air supply to the pneumatic valve spring through the cylinder head. Furthermore, with appropriate mechanical Dimensioning of the gas supply opening, this used in an advantageous manner as another centering become.
Die Anordnung gemäß Patentanspruch 5 sichert auch bei Drucklosigkeit im Gehäuse der pneumatischen Ventilfeder den ständigen Kontakt von dem Gaswechselventil mit der Nocke einer Nockenwelle. Darüber hinaus erfüllt dieses Federelement eine Notlauffunktion, falls beim Betrieb der Brennkraftmaschine die Druckversorgung ausfallen sollte bzw. beim Neustart der Brennkraftmaschine, wenn eventuell kein Gasdruck zur Verfügung steht.The Arrangement according to claim 5 secures even in the absence of pressure in the housing of the pneumatic valve spring the permanent one Contact of the gas exchange valve with the cam of a camshaft. About that fulfilled this spring element an emergency function, if in operation of the Internal combustion engine, the pressure supply should fail or at Restart of the internal combustion engine, if possibly no gas pressure to disposal stands.
Die Ausgestaltung gemäß Patentanspruch 6 verbessert die Führung der bewegten Bauelemente im Ventiltrieb.The Embodiment according to claim 6 improves the leadership the moving components in the valve train.
Durch die Anordnung gem. Patentanspruch 7 wird der Ventiltrieb in vorteilhafter Weise spielfrei, wodurch vorzeitiger Verschleiß von Ventiltriebsbauteilen vermieden wird.By the arrangement acc. Claim 7, the valve train is in an advantageous Free play, eliminating premature wear of valve train components is avoided.
Eine bevorzugte Ausführungsform ist gemäß Patentanspruch 8 ein hydraulisches Spielausgleichselement, welches von der brennkraftmaschineneigenen Schmierölversorgung mit Druck beaufschlagt wird.A preferred embodiment is in accordance with claim 8 shows a hydraulic lash adjuster element, which is of the internal combustion engine Oil supply is pressurized.
Die Ausgestaltung gemäß Patentanspruch 9 gewährleistet, dass beim Öffnen des Gaswechselventils das Hemd des Tassenstößels koaxial um das Gehäuse der pneumatischen Rückstellfeder angeordnet wird. Durch diese kompakte Ausgestaltung wird Bauraum eingespart und die beschleunigten Massen im Ventiltrieb werden wesentlich reduziert. Vorteilhafterweise sind somit höhere Drehzahlen möglich.The Embodiment according to claim 9 ensures that when opening the gas exchange valve the shirt of the tappet coaxially around the housing of the pneumatic return spring is arranged. Due to this compact design space is saved and the accelerated masses in the valve train are essential reduced. Advantageously, thus higher speeds are possible.
Die Ausgestaltung gemäß Patentanspruch 10 gewährleistet, dass die pneumatische Rückstellfeder in einfachster Weise beim Einbau in einen Zylinderkopf durch die Bohrung des Tassenstößels hindurch verbaut werden kann. Somit ist es möglich, zuerst die pneumatische Rückstellfeder samt Gaswechselventil im Zylinderkopf zu verbauen und in einem weiteren Arbeitsschritt den Tassenstößel und das Spielausgleichselement in den Zylinderkopf einzusetzen. Eine einfache und kostengünstige Fertigung ist somit möglich.The Embodiment according to claim 10 guaranteed that the pneumatic return spring in the simplest way when installed in a cylinder head through the Drill through the tappet can be installed. Thus it is possible, first the pneumatic Return spring complete with gas exchange valve in the cylinder head and in another Work the bucket tappet and that Insert clearance compensation element in the cylinder head. A simple one and cost-effective Production is thus possible.
Im Folgenden ist ein bevorzugtes Ausführungsbeispiel in einer einzigen Figur näher erläutert.in the Below is a preferred embodiment in a single Figure closer explained.
Eine
vorgeschlagene pneumatische Rückstellfeder
Im
vorliegenden Ausführungsbeispiel
ist das Zentrierelement
Die
wesentlichen Vorteile des vorgeschlagenen Systems werden beim Einbau
der pneumatischen Rückstellfeder
Bei der vorgeschlagenen Ausgestaltung des Ventiltriebs sind bei der Umstellung von konventionellen Ventiltrieben auf den erfindungsgemäßen Ventiltrieb nur geringe Änderungen am Zylinderkopf notwendig. Ferner werden äußerst kompakte Abmessungen erzielt, sowie geringste Ventiltriebsmassen erreicht. Darüber hinaus ist die Montage wesentlich vereinfacht.at the proposed embodiment of the valve train are in the Changeover from conventional valve drives to the valve drive according to the invention only minor changes necessary on the cylinder head. Furthermore, extremely compact dimensions achieved, and achieved lowest valve train masses. Furthermore the assembly is much easier.
- 11
- Pneumatische Rückstellfederpneumatic Return spring
- 22
- GaswechselventilGas exchange valve
- 2'2 '
- Ventilschaftvalve stem
- 2''2 ''
- VentilschaftendeValve stem end
- 33
- VentilfedertellerValve spring retainer
- 44
- Gehäusecasing
- 4'4 '
- Erste ÖffnungFirst opening
- 4''4 ''
- Zweite ÖffnungSecond opening
- 4'''4 '' '
- BundFederation
- 55
- VentilschaftführungValve stem guide
- 66
- Zentrierelementcentering
- 77
- Gaszuführöffnunggas supply
- 88th
- Mechanisches Federelementmechanical spring element
- 99
- Tassenstößeltappets
- 9'9 '
- Hemdshirt
- 9''9 ''
- Ölbohrungoil well
- 1010
- SpielausgleichselementLash adjuster
- 1111
- Gewindethread
- 1212
- Hohlraumcavity
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10357552A DE10357552A1 (en) | 2003-12-10 | 2003-12-10 | Valve drive for an internal combustion engine comprises a housing surrounding a gas-exchange valve shaft and having a radially inward-protruding shoulder at an opening, and a centering element fixed on a valve shaft guide and the shoulder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10357552A DE10357552A1 (en) | 2003-12-10 | 2003-12-10 | Valve drive for an internal combustion engine comprises a housing surrounding a gas-exchange valve shaft and having a radially inward-protruding shoulder at an opening, and a centering element fixed on a valve shaft guide and the shoulder |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10357552A1 true DE10357552A1 (en) | 2005-07-14 |
Family
ID=34672524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10357552A Withdrawn DE10357552A1 (en) | 2003-12-10 | 2003-12-10 | Valve drive for an internal combustion engine comprises a housing surrounding a gas-exchange valve shaft and having a radially inward-protruding shoulder at an opening, and a centering element fixed on a valve shaft guide and the shoulder |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10357552A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2364328A1 (en) * | 1976-09-09 | 1978-04-07 | Chrysler France | Valve operation for four-stroke IC engine - has spring return aided by adiabatic expansion of air compressed during opening stroke |
FR2537207A1 (en) * | 1982-12-01 | 1984-06-08 | Peugeot | Pneumatic return device for inlet valve of engine with ignition by compression |
US4592313A (en) * | 1984-10-15 | 1986-06-03 | Speckhart Frank H | Pneumatic valve return |
US5058541A (en) * | 1989-04-26 | 1991-10-22 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system of internal combustion engine |
-
2003
- 2003-12-10 DE DE10357552A patent/DE10357552A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2364328A1 (en) * | 1976-09-09 | 1978-04-07 | Chrysler France | Valve operation for four-stroke IC engine - has spring return aided by adiabatic expansion of air compressed during opening stroke |
FR2537207A1 (en) * | 1982-12-01 | 1984-06-08 | Peugeot | Pneumatic return device for inlet valve of engine with ignition by compression |
US4592313A (en) * | 1984-10-15 | 1986-06-03 | Speckhart Frank H | Pneumatic valve return |
US5058541A (en) * | 1989-04-26 | 1991-10-22 | Honda Giken Kogyo Kabushiki Kaisha | Valve operating system of internal combustion engine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0866221A1 (en) | Fuel distributor for a diesel engine | |
DE102012213176B4 (en) | Hydraulic camshaft adjuster | |
WO2017190737A1 (en) | Hydraulic tensioning device for a chain drive | |
DE10211468A1 (en) | Camshaft adjuster for internal combustion engine has control piston in separate guide casing | |
DE102013205129A1 (en) | Bearing frame or cylinder head cover of an internal combustion engine | |
WO2011134740A1 (en) | Pressure accumulator arrangement for a camshaft adjusting system | |
DE102017121443A1 (en) | Check valve for a connecting rod of an internal combustion engine with variable compression and connecting rod with such a check valve | |
DE102015114440A1 (en) | Disc brake with synchronization unit | |
DE102018120265A1 (en) | Tappet for a fuel pump or for a valve train | |
DE102006005333A1 (en) | Valve drive for motor vehicle internal combustion engine has camshaft mounted in adjustable bearings in rocker cover | |
DE102005010234A1 (en) | Piston cooling for internal combustion engine has oil spraying nozzle which is connected to oil dispenser channel whereby connection between oil dispenser channel and lubricating oil channel is formed for receiving hole of on-off valve | |
EP2009255B1 (en) | Nozzle valve for a combustion engine with electrohydraulic valve control | |
DE102014201911B4 (en) | Actuator for an electrohydraulic gas exchange valve drive of an internal combustion engine | |
DE102016008767A1 (en) | expansion chucking | |
DE3023686A1 (en) | Tappet for OHC IC engine - has two thin wall sections welded together for light construction, with play equalising | |
EP3452739B1 (en) | Hydraulic tensioning device for a chain drive | |
DE10357552A1 (en) | Valve drive for an internal combustion engine comprises a housing surrounding a gas-exchange valve shaft and having a radially inward-protruding shoulder at an opening, and a centering element fixed on a valve shaft guide and the shoulder | |
DE102018107108A1 (en) | Switching valve for controlling a hydraulic fluid flow and connecting rod for a variable compression internal combustion engine with a switching valve | |
DE102017106987A1 (en) | Check valve for a connecting rod for a variable compression internal combustion engine | |
EP3267012B1 (en) | Check valve for a connecting rod for a combustion engine with variable compression | |
DE102019126606A1 (en) | Rocker or rocker arm for a valve drive of an internal combustion engine | |
DE102013209166A1 (en) | Central valve with a control piston to control the oil supply for a camshaft adjuster | |
DE102014116443B4 (en) | Camshaft for an internal combustion engine | |
EP3450720A2 (en) | Switching valve for controlling a hydraulic fluid stream and connecting rod for a combustion engine with variable compression with a switching valve | |
DE102013209862A1 (en) | Arrangement of an electromagnet for controlling a central valve |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
8125 | Change of the main classification |
Ipc: F01L 1/02 AFI20051017BHDE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |