DE10236838A1 - Roller tappet for valve gear or injection device of internal combustion engine has hollow tappet piston acting as pump piston, constructed in shape of pot, and having crown surface upon which lies helical compression spring by one end - Google Patents
Roller tappet for valve gear or injection device of internal combustion engine has hollow tappet piston acting as pump piston, constructed in shape of pot, and having crown surface upon which lies helical compression spring by one end Download PDFInfo
- Publication number
- DE10236838A1 DE10236838A1 DE10236838A DE10236838A DE10236838A1 DE 10236838 A1 DE10236838 A1 DE 10236838A1 DE 10236838 A DE10236838 A DE 10236838A DE 10236838 A DE10236838 A DE 10236838A DE 10236838 A1 DE10236838 A1 DE 10236838A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- tappet
- roller
- compression spring
- helical compression
- 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- Withdrawn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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
- F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
- F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
-
- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
-
- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
-
- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
- F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Gebiet der ErfindungField of the Invention
Die Erfindung betrifft einen Rollenstößel für einen Ventiltrieb oder eine Einspritzvorrichtung einer Brennkraftmaschine, mit einer drehbar gelagerten Rolle, auf welche eine Nockenkontur einer Nockenwelle einwirkt, und mit einem hohlen Stößelkolben, in welchem eine Schraubendruckfeder angeordnet und koaxial abgestützt ist.The invention relates to a roller tappet for Valve train or an injection device of an internal combustion engine, with a rotatably mounted roller on which a cam contour acts on a camshaft, and with a hollow tappet piston, in which a helical compression spring is arranged and supported coaxially.
Ein solcher Rollenstößel findet Einsatz bei durch Nockenwellen betätigten hydraulischen Pumpeinheiten, z. B. hydraulischen Ventiltrieben oder GDI-Einspritzvorrichtungen (Gasoline Direct Injection).Such a roller tappet takes place Use in hydraulic pump units operated by camshafts, z. B. hydraulic valve trains or GDI injectors (Gasoline Direct Injection).
Eine bekannte Pumpeinheit, deren Stößel jedoch nicht mit einer Rolle versehen ist, weist einen von einer Pumpenfeder umgebenen Stößelkolben auf, der in einem Zylinder längsverschieblich angeordnet ist. Zur axialen Abstützung der Feder ist an dem Stößelkolben ein Federteller und an dem Zylinder eine Fe derabstützfläche ausgebildet. Der Federteller dient gleichzeitig als Gleitfläche, an welcher der Nocken entlanggleitet, der den Stößelkolben gegenüber dem Zylinderkörper verschiebt. Außer dem Nachteil, daß hier kein Rollenabgriff erfolgt, hat diese Ausführung auch einen großen Platzbedarf und verursacht eine teuere Fertigung. Außerdem kann bei einem solchen Pumpenstößel der Stößelkolben mit angesetztem Federteller nicht spitzenlos rundgeschliffen werden. Bei der vorliegenden Anwendung ist ein Rollenabgriff einem Gleitabgriff vorzuziehen. Es liegen sehr beengte Platzverhältnisse vor, die den Einsatz einer größeren Rolle verhindern. Mit abnehmender Rollengröße steigen die Pressungen im Kontaktbereich Rolle-Nocken sowie die Drehzahl der Rolle.A known pump unit, the Pestle however is not provided with a roller, has one of a pump spring surrounding plunger piston, which is longitudinally displaceable in a cylinder is arranged. For axial support the spring is on the plunger a spring plate and a Fe derabträgerfläche formed on the cylinder. The spring plate also serves as a sliding surface on which the cam that slides along the plunger across from the cylinder body shifts. Except the disadvantage that here no roll is picked up, this version also requires a lot of space and causes expensive manufacturing. In addition, such Pump plunger of the ram piston with a spring plate attached, do not sharpen to a round shape. In the present application, a roller tap is a sliding tap preferable. There is very limited space available for use a bigger role prevent. With decreasing roll size, the pressures increase in Contact area roller-cam and the speed of the roller.
Aus der Druckschrift
Der Erfindung liegt die Aufgabe zugrunde, einen Rollenstößel anzugeben, dessen bewegte Masse sehr gering ist.The invention is based on the object specify a roller tappet whose moving mass is very small.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Stößelkolben topfförmig ausgebildet ist und eine Bodenfläche aufweist, an welcher die Schraubendruckfeder unmittelbar mit einem Ende anliegt.This object is achieved according to the invention solved, that the ram piston cup-shaped is formed and a floor surface has, on which the helical compression spring directly with one end is applied.
Die Integration der Schraubendruckfeder in dem Innenraum des Stößelkolbens ermöglicht bei Verwendung einer Rolle als Abgriff eine kompakte Bauform des Stößels. Die Rolle kann in ihrer Größe dem zur Verfügung stehenden Querschnitt des Stößelkolbens entsprechend groß gestaltet werden.The integration of the helical compression spring in the interior of the tappet piston allows when using a roller as a tap, a compact design of the Ram. The Role can be used in size disposal standing cross section of the tappet piston designed accordingly large become.
Der Stößelkolben kann in einer Zylinderbohrung eines Gehäuses als Pumpenkolben wirkend linear verschiebbar gelagert sein, welche mit einem in dem Gehäuse angeordneten Kanal für ein zu förderndes flüssiges oder gasförmiges Medium verbunden ist. In der Zylinderbohrung des Gehäuses kann ein zylinderförmiger Stützkörper angeordnet sein, welcher von dem Stößelkolben teilweise umgeben ist. Dabei kann in dem Stützkörper eine als Leitung für das zu fördernde Medium wirkende Bohrung angeordnet sein, durch welche der die Schraubendruckfeder enthaltende, im übrigen geschlossene und als Druckraum wirkende Innenraum des Stößelkolbens mit dem Kanal des Gehäuses verbunden ist. Es ist auch möglich, daß ein an dem Stößelkolben sich anschließender Ringraum, der von dem Gehäuse und dem Stützkörper innerhalb der Zylinderbohrung gebildet ist, über als Leitungen für das zu fördernde Medium wirkende Bohrungen mit dem Kanal des Gehäuses verbunden ist.The plunger piston can be in a cylinder bore of a housing acting as a pump piston, linearly displaceable, which with one in the case arranged channel for one to be funded liquid or gaseous Medium is connected. Can in the cylinder bore of the housing a cylindrical one Support body arranged be which of the plunger is partially surrounded. It can be in the support body as a line for the promotional Medium acting bore can be arranged through which the helical compression spring containing, otherwise closed and acting as a pressure chamber interior of the ram piston the channel of the housing connected is. It is also possible, the existence on the plunger subsequent Annulus by the housing and the support body inside the cylinder bore is formed over as lines for that too promotional Medium-acting holes are connected to the channel of the housing.
Bei der erfindungsgemäßen Ausführung werden am Stößel kein Federteller und keine Federabstützfläche an der Außenseite des Stößels benötigt, so daß die Anzahl der erforderlichen Teile reduziert ist. Der Stößelkolben kann spitzenlos rundgeschliffen werden, dadurch verringern sich die Fertigungskosten. Zur Verdrehsicherung kann der Stößel an einer Seite oder an zwei Seiten abgeflacht werden, oder es kann ein Verdrehsicherungsstift angebracht werden.In the embodiment according to the invention on the pestle no Spring plate and no spring support surface on the outside the plunger needed, so that the Number of parts required is reduced. The plunger can be sharpened roundly, thereby reducing the manufacturing cost. To prevent rotation, the plunger can be attached to a Side or flattened on two sides, or it can be an anti-rotation pin be attached.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden im Vergleich mit dem vorbekannten Stand der Technik näher beschrieben. Es zeigen:Embodiments of the invention are shown in the drawing and are compared below described in more detail with the prior art. Show it:
Ausführliche Beschreibung der ZeichnungFull Description of the drawing
Eine in
Ein in
Ein in
- 11
- Nockenwelle camshaft
- 22
- Rolle role
- 33
- UmlenkhebelUmlenkhebel
- 44
- Achseaxis
- 55
- Nockenkonturcam contour
- 66
- Rollerole
- 77
- Rollenstößelroller plunger
- 88th
- HaupteinspritzkolbenMain injection plunger
- 99
- Zylindercylinder
- 1010
- Zylindercylinder
- 1111
- SchraubendruckfederHelical compression spring
- 1212
- Einsatzcommitment
- 1313
- Stößeltappet
- 1414
- Zylindercylinder
- 1515
- Stößelkolbenram piston
- 1616
- Pumpenfederpump spring
- 1717
- FederabstützflächeFederabstützfläche
- 1818
- Federtellerspring plate
- 1919
- Rollenstößelroller plunger
- 2020
- Stößelkolbenram piston
- 2121
- Innenrauminner space
- 2222
- SchraubendruckfederHelical compression spring
- 2323
- Bodenflächefloor area
- 2424
- Stützkörpersupport body
- 2525
- Zylinderbohrungbore
- 2626
- Gehäusecasing
- 2727
- Rollerole
- 2828
- Leitungmanagement
- 2929
- Kanalchannel
- 3030
- Rollenstößelroller plunger
- 3131
- Zylinderbohrungbore
- 3232
- Gehäusecasing
- 3333
- Stützkörpersupport body
- 3434
- Ringraumannulus
- 3535
- Stößelkolbenram piston
- 3636
- Leitungmanagement
- 3737
- Bohrungdrilling
Claims (6)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10236838A DE10236838A1 (en) | 2002-08-10 | 2002-08-10 | Roller tappet for valve gear or injection device of internal combustion engine has hollow tappet piston acting as pump piston, constructed in shape of pot, and having crown surface upon which lies helical compression spring by one end |
PCT/EP2003/007219 WO2004022930A1 (en) | 2002-08-10 | 2003-07-05 | Roller tappet for an internal combustion engine |
DE50310746T DE50310746D1 (en) | 2002-08-10 | 2003-07-05 | ROLLING PISTON FOR A COMBUSTION ENGINE |
EP03793614A EP1527259B1 (en) | 2002-08-10 | 2003-07-05 | Roller tappet for an internal combustion engine |
AU2003263171A AU2003263171A1 (en) | 2002-08-10 | 2003-07-05 | Roller tappet for an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10236838A DE10236838A1 (en) | 2002-08-10 | 2002-08-10 | Roller tappet for valve gear or injection device of internal combustion engine has hollow tappet piston acting as pump piston, constructed in shape of pot, and having crown surface upon which lies helical compression spring by one end |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10236838A1 true DE10236838A1 (en) | 2004-02-26 |
Family
ID=30775158
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10236838A Withdrawn DE10236838A1 (en) | 2002-08-10 | 2002-08-10 | Roller tappet for valve gear or injection device of internal combustion engine has hollow tappet piston acting as pump piston, constructed in shape of pot, and having crown surface upon which lies helical compression spring by one end |
DE50310746T Expired - Lifetime DE50310746D1 (en) | 2002-08-10 | 2003-07-05 | ROLLING PISTON FOR A COMBUSTION ENGINE |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE50310746T Expired - Lifetime DE50310746D1 (en) | 2002-08-10 | 2003-07-05 | ROLLING PISTON FOR A COMBUSTION ENGINE |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1527259B1 (en) |
AU (1) | AU2003263171A1 (en) |
DE (2) | DE10236838A1 (en) |
WO (1) | WO2004022930A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016105209A1 (en) | 2016-02-02 | 2017-08-03 | Darius Loba | High-pressure fuel pump with a weight-reduced piston |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1123518B (en) * | 1959-03-19 | 1962-02-08 | Daimler Benz Ag | Device for adjusting the injection timing in internal combustion engines |
DE3231853C2 (en) * | 1981-09-05 | 1992-12-10 | Lucas Industries P.L.C., Birmingham, West Midlands, Gb | |
DE3731240C2 (en) * | 1987-09-17 | 1995-04-06 | Volkswagen Ag | Injector |
DE19956092A1 (en) * | 1999-11-22 | 2000-10-26 | Siemens Ag | Piston pump, especially high-pressure radial piston pump |
DE69708757T2 (en) * | 1996-06-11 | 2002-07-18 | Ricardo Consulting Eng | Hydraulic valve lifter |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB172686A (en) * | 1920-08-10 | 1921-12-12 | Ernest Arthur Franks | Improvements in means for operating the valves of engines |
US1690032A (en) * | 1927-04-25 | 1928-10-30 | Noble | Hydraulic valve gear |
US2277418A (en) * | 1940-08-29 | 1942-03-24 | Simson Godfrey | Hydraulic valve operating system |
US6439204B1 (en) * | 1999-08-19 | 2002-08-27 | Stanadyne Corporation | Timing advance piston for unit pump or unit injector and method thereof |
-
2002
- 2002-08-10 DE DE10236838A patent/DE10236838A1/en not_active Withdrawn
-
2003
- 2003-07-05 WO PCT/EP2003/007219 patent/WO2004022930A1/en not_active Application Discontinuation
- 2003-07-05 AU AU2003263171A patent/AU2003263171A1/en not_active Abandoned
- 2003-07-05 DE DE50310746T patent/DE50310746D1/en not_active Expired - Lifetime
- 2003-07-05 EP EP03793614A patent/EP1527259B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1123518B (en) * | 1959-03-19 | 1962-02-08 | Daimler Benz Ag | Device for adjusting the injection timing in internal combustion engines |
DE3231853C2 (en) * | 1981-09-05 | 1992-12-10 | Lucas Industries P.L.C., Birmingham, West Midlands, Gb | |
DE3731240C2 (en) * | 1987-09-17 | 1995-04-06 | Volkswagen Ag | Injector |
DE69708757T2 (en) * | 1996-06-11 | 2002-07-18 | Ricardo Consulting Eng | Hydraulic valve lifter |
DE19956092A1 (en) * | 1999-11-22 | 2000-10-26 | Siemens Ag | Piston pump, especially high-pressure radial piston pump |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016105209A1 (en) | 2016-02-02 | 2017-08-03 | Darius Loba | High-pressure fuel pump with a weight-reduced piston |
Also Published As
Publication number | Publication date |
---|---|
EP1527259A1 (en) | 2005-05-04 |
DE50310746D1 (en) | 2008-12-18 |
WO2004022930A1 (en) | 2004-03-18 |
AU2003263171A1 (en) | 2004-03-29 |
EP1527259B1 (en) | 2008-11-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER KG, 91074 HERZOGENAURACH, DE |
|
8141 | Disposal/no request for examination |