EP1002945B1 - Stirnrad-Nockenwellenantrieb für eine Brennkraftmaschine - Google Patents
Stirnrad-Nockenwellenantrieb für eine Brennkraftmaschine Download PDFInfo
- Publication number
- EP1002945B1 EP1002945B1 EP99120961A EP99120961A EP1002945B1 EP 1002945 B1 EP1002945 B1 EP 1002945B1 EP 99120961 A EP99120961 A EP 99120961A EP 99120961 A EP99120961 A EP 99120961A EP 1002945 B1 EP1002945 B1 EP 1002945B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- wheel
- gear
- rotation
- crankshaft
- 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.)
- Expired - Lifetime
Links
Images
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
- F01L1/02—Valve drive
-
- 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
- F01L1/02—Valve drive
- F01L1/026—Gear drive
Definitions
- the invention relates to a spur gear camshaft drive for an internal combustion engine with a crankcase, a crankshaft wheel and a camshaft gear according to Preamble of claim 1.
- crankshaft gear meshing gear of the camshaft drive results with increasing number of gears between crankshaft and camshaft, as is Add tolerances and center distance inaccuracies accordingly.
- a camshaft drive by spur gears comes, for example, only at a small distance between the crankshaft and Camshaft, ie at the bottom of the camshaft, for use. It is to Reducing the game already provided to provide helical gears, so that the quietest possible run is achieved. Nevertheless achieve such spur or.
- the present invention is based on the object, an improved spur gear camshaft drive of the abovementioned type, the above-mentioned disadvantages are overcome and its uses without unwanted side effects in various motor vehicles, especially in Passenger cars to be extended.
- crankshaft and Camshaft gear at least one compensating intermediate is arranged, whose axis of rotation is freely movable with respect to the crankcase.
- the axis of rotation of the compensating intermediate wheel of at least two brackets are pivotally supported, which is located on the axis of rotation of the compensating intermediate wheel opposite ends respectively at fixed axes of rotation of the Balancing intermediate wheel adjacent wheels pivotally supported.
- a clearance compensation directly on the camshaft is achieved in that the Balancing intermediate between the camshaft and a last intermediate the Spur gear camshaft drive is arranged. Since at this point the entire game of the Cumulated spur camshaft drive, thus resulting in a maximum clearance compensation.
- crankshaft to Camshaft of 2: 1 in that a ratio of the number of teeth between the balance idler and an adjacent idler is selected accordingly.
- adjacent idler for example, a crankshaft side idler.
- FIG. 1 to 4 preferred embodiment of an inventive Spur gear camshaft drive to a crankcase 10 of an otherwise not closer illustrated internal combustion engine comprises a crankshaft 12, a first intermediate 14, a second idler 16, a balance idler 18, and a camshaft sprocket 20.
- the second intermediate gear 16 meshes with a drive gear 22 for a not shown Water pump.
- the crankshaft gear 12 further meshes with a drive gear 24 for a not shown oil pump and a third intermediate 26.
- the third intermediate 26 meshes again with a fourth intermediate 28, which in turn a Drive gear 30 of a generator, not shown, and a drive gear 32 a not shown hydropump drives combing.
- the second intermediate 16 is with a further sprocket 34 rotatably connected, wherein the second intermediate gear 16 itself with the first idler 14 and the other sprocket 34 with the balance idler 18th combs.
- a number of teeth of the other sprocket 34 and a number of teeth of the intermediate balance gear 18 is chosen such that the crankshaft 12 for Camshaft 20 gives a translation of 2: 1.
- An axis of rotation 36 of the compensating intermediate wheel 18 is relative to the crankcase 10 and a cylinder head freely movable and is only with respect to the axes of rotation 42, 44th from second idler gear 16 and camshaft gear 20 through two pair of brackets 38 and 40 predetermined.
- the bracket 38 hold with one side of the axis of rotation 36 of the intermediate balance gear 18 rotatable while an opposite side of the bracket 38 at the Rotary axis 42 of the second intermediate gear 16 is supported.
- the bracket 40 also hold with a Side the axis of rotation 36 of the balance intermediate wheel 18 rotatable while a opposite side of the bracket 38 in the cylinder head housing via the axis of rotation 44 of the Camshaft wheel 20 is supported.
- the bracket 38 and 40 in changing Distance between the axes of rotation 42 and 44 at a varying angle to each other include so that the balance idler 18 always tight and substantially free of play meshes with both the ring gear 34 and the camshaft wheel 20.
- the bracket 38 and 40 thus form a hinge with the hinge axis on the axis of rotation 36 of the intermediate balance gear 18, which correspondingly changing distances between the Rotary axes 42 and 44 spreads more or less widely due to thermal expansion.
- Fig. 4 shows a hidden in Fig. 1 region of the spur gear camshaft drive in the area
- the cam pair 40 is supported in the cylinder head housing over the Rotary axis 44 of the camshaft wheel 20 from, whereas respective the camshaft 20th opposite ends 49 of the bracket 40, the rotation axis 36 of the not shown in Fig. 4 Keep balancing idler 18.
- a screw 48 and a sleeve 50 is the Camshaft assembly bolted, which further u.a. a donor wheel 52 and a hub 54 includes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
- Valve Device For Special Equipments (AREA)
- Gear Transmission (AREA)
Description
- Fig. 1
- eine bevorzugte Ausführungsform eines erfindungsgemäßen Stirnrad-Nockenwellenantriebs in Aufsicht,
- Fig. 2
- eine Schnittansicht entlang Linie l-l von Fig. 1 und
- Fig. 3 und 4
- Explosionsdarstellungen.
Claims (4)
- Stirnrad-Nockenwellenantrieb für eine Brennkraftmaschine mit einem Kurbelgehäuse (10), einem Kurbelwellenrad (12) und einem Nockenwellenrad (20),
dadurch gekennzeichnet, daß zwischen Kurbelwellenrad (10) und Nockenwellenrad (20) wenigstens ein Ausgleich-Zwischenrad (18) angeordnet ist, dessen Drehachse (36) bezüglich des Kurbelgehäuses (10) frei beweglich ist. - Stirnrad-Nockenwellenantrieb nach Anspruch 1,
dadurch gekennzeichnet, daß die Drehachse (36) des Ausgleich-Zwischenrades (18) von wenigstens zwei Bügeln (38,40) schwenkbar gehaltert ist, welche sich an der Drehachse (36) des Ausgleich-Zwischenrades (18) gegenüberliegenden Enden jeweils an festen Drehachsen (42,44) von zum Ausgleich-Zwischenrad (18) benachbarten Zahnrädern (20,34) schwenkbar abstützen. - Stirnrad-Nockenwellenantrieb nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß das Ausgleich-Zwischenrad (18) zwischen dem Nockenwellenrad (20) und einem letzten Zwischenrad (16) des Stirnrad-Nockenwellenantriebes angeordnet ist. - Stirnrad-Nockenwellenantrieb nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß ein Verhältnis der Zähnezahl zwischen dem Ausgleich-Zwischenrad (18) und einem benachbarten Zwischenrad (34) derart gewählt ist, daß sich ein Übersetzungsverhältnis von Kurbelwelle zu Nockenwelle von 2:1 ergibt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853635A DE19853635A1 (de) | 1998-11-20 | 1998-11-20 | Stirnrad-Nockenwellenantrieb für eine Brennkraftmaschine |
DE19853635 | 1998-11-20 |
Publications (4)
Publication Number | Publication Date |
---|---|
EP1002945A2 EP1002945A2 (de) | 2000-05-24 |
EP1002945A4 EP1002945A4 (de) | 2001-03-01 |
EP1002945A3 EP1002945A3 (de) | 2001-04-18 |
EP1002945B1 true EP1002945B1 (de) | 2005-02-09 |
Family
ID=7888490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99120961A Expired - Lifetime EP1002945B1 (de) | 1998-11-20 | 1999-11-03 | Stirnrad-Nockenwellenantrieb für eine Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1002945B1 (de) |
AT (1) | ATE289006T1 (de) |
DE (2) | DE19853635A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004018263A1 (de) * | 2004-04-15 | 2005-11-24 | Bayerische Motoren Werke Ag | Einrichtung zur Flankenspieleinstellung, insbesondere für einen Zahnräder umfassenden Nockenwellenantrieb |
DE102009027509A1 (de) | 2009-07-07 | 2011-01-20 | Zf Friedrichshafen Ag | Anordnung von mindestens zwei Zahnradstufen in einem Getriebe |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1148478A (en) * | 1913-08-21 | 1915-07-27 | J B M Electric Company | Engine-gearing. |
CS169211B1 (de) * | 1974-01-24 | 1976-07-29 | ||
DE3309376C1 (de) * | 1983-03-16 | 1984-11-08 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Nockenwellenantrieb einer Brennkraftmaschine |
JPH02146209A (ja) * | 1988-11-28 | 1990-06-05 | Yamaha Motor Co Ltd | 4サイクルエンジンのカム軸駆動装置 |
JPH04153506A (ja) * | 1990-10-17 | 1992-05-27 | Mazda Motor Corp | エンジンのカムシャフト駆動装置 |
-
1998
- 1998-11-20 DE DE19853635A patent/DE19853635A1/de not_active Withdrawn
-
1999
- 1999-11-03 DE DE59911589T patent/DE59911589D1/de not_active Expired - Lifetime
- 1999-11-03 EP EP99120961A patent/EP1002945B1/de not_active Expired - Lifetime
- 1999-11-03 AT AT99120961T patent/ATE289006T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE59911589D1 (de) | 2005-03-17 |
EP1002945A3 (de) | 2001-04-18 |
DE19853635A1 (de) | 2000-05-25 |
ATE289006T1 (de) | 2005-02-15 |
EP1002945A4 (de) | 2001-03-01 |
EP1002945A2 (de) | 2000-05-24 |
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