EP0872631A1 - Camshaft-angular position identifier disk arrangement for internal combustion engine - Google Patents
Camshaft-angular position identifier disk arrangement for internal combustion engine Download PDFInfo
- Publication number
- EP0872631A1 EP0872631A1 EP98105315A EP98105315A EP0872631A1 EP 0872631 A1 EP0872631 A1 EP 0872631A1 EP 98105315 A EP98105315 A EP 98105315A EP 98105315 A EP98105315 A EP 98105315A EP 0872631 A1 EP0872631 A1 EP 0872631A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- camshaft
- segments
- long
- short
- sensor disk
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 11
- 238000005266 casting Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 8
- 238000012805 post-processing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- 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
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/04—Sensors
- F01L2820/041—Camshafts position or phase sensors
Definitions
- the invention relates to an arrangement of a camshaft sensor disk for camshaft position detection on a camshaft of an internal combustion engine according to the preamble of Claim 1.
- crankshaft rotates twice per cycle and sweeps an angle of 720 ° before a certain cylinder is the same again Occupies a working position.
- it is therefore not sufficient to close the angular position of the crankshaft within one revolution determine.
- It must also be detected whether the internal combustion engine is currently in the first or in the second half of the work cycle corresponding to the first or second Crankshaft revolution. Such a cylinder detection is in connection with a modern internal combustion engine control required.
- an encoder arrangement is known (EP 0 572 584 B1) with an encoder disk which is connected to the crankshaft is connected and on its periphery a variety of similar angle marks and has a reference mark.
- a second encoder disc with the Camshaft of the internal combustion engine connected to the circumference of different lengths Has segments with spaces. The number of segments corresponds to the number the cylinder. Half of the segments consist of successive short segments and successive long segments, being between the long segments there are short spaces and there are long spaces between the short segments. In addition, there may be a short or between the short and long segments long separation space.
- crankshaft encoder disk and the camshaft encoder disk are for example, inductive sensors or Hall sensors.
- the at The signals generated by the angular marks or the segments in the sensors pass by are fed to a control unit and there for precise cylinder recognition and Position detection evaluated.
- combinations of the electrical Signals considering short high or low phases, the short and long Are assigned to segments, evaluated for cylinder recognition.
- the camshaft sensor disk was previously manufactured as a separate disk and rotatably connected together with the camshaft.
- the production of the disc, if necessary, an adjustment to the cam position and the assembly are relative complex.
- tolerances are possible, which in unfavorable conditions Errors
- the object of the invention is to provide a generic arrangement of a camshaft sensor disk for camshaft position detection on a camshaft of an internal combustion engine so that the manufacturing and assembly costs work well be reduced.
- the camshaft sensor disk and the camshaft are in one piece and made of the same material as a unit.
- the camshaft sensor disk and the camshaft are particularly advantageously made in one piece with the formation of the segments and at least part of the spaces poured.
- a simple casting process with two mold boxes is possible, their Demoulding plane lies in a central longitudinal plane of the camshaft. If the location is suitable Camshaft encoder disks in the molding boxes have no or only a few flanks the segments that form undercuts. Thus, at least part of the Segments and their gaps can be cast directly and without post-processing.
- at least some of the segment lengths and space lengths as well as the assigned signal lengths are not critical, so that corresponding casting-related length tolerances are not critical for cylinder detection.
- Postprocesses are therefore only required where there are undercuts in the segments with respect to the demoulding plane in the finished state occur and this due to the simple casting process without Insert parts or sliders cannot be produced. Post-processing can also be done there be required where exact flank positions of the cylinder and position detection Segments are required.
- camshaft sensor disk has four segments, such that two are long Segments are followed by two short segments, with short segments following the long segments Gaps and long gaps following the short segments.
- the demolding plane is expedient in a radial plane of the camshaft encoder disk placed so that this one hand at the end of the first long space and on the other hand is opposite at the beginning of the second long segment. Thereby the corresponding segment flanks run in the demoulding plane.
- the flanks at the beginning and end of the first short segment and the Edge at the beginning and possibly at the end of the first long segment standing upright the demoulding plane can be selected so that demoulding also with respect to these flanks is possible without undercuts.
- the space between the two long segments can also be so that the flank is not radial at the end of the first long segment runs rather perpendicular to the demoulding plane and is therefore a simple one Demolding without undercuts is possible.
- An assigned must be on this edge Sensor usually recognize exactly "Low”, so that post-processing to a precisely defined edge position is appropriate. Because such post-processing here this space between the two long ones may be necessary anyway Segments can also be fully or partially cast from the outset and then after be removed from the mold.
- FIG. 1 shows a unit 1 composed of a camshaft sensor disk 2 and a camshaft 3 shown, the camshaft sensor disk 2 and the camshaft 3 as a unit 1 in one piece and uniform in material with a simple casting process with two mold boxes is made.
- camshaft sensor disk 2 and the camshaft 3 rotate together by one central axis 4 clockwise according to arrow 5.
- Segments of different lengths are included on the circumference of the camshaft sensor disk 2 Interspaces arranged, the disk diameter according to the arrows 6 and 7 in the segment areas is significantly larger than the space areas.
- first and second short ones Segment 8, 9 a first and second long segment 10, 11.
- first and second long space 12, 13 and following the long segments 10, 11 each have a first and a second short space 14, 15.
- the demoulding level lies 16 in a radial plane on the one hand at the end of the first long space 12 or on the start flank of the second short segment 9 and on the other hand at the end of the first shorter space 14 or on the starting flank of the second long segment 11.
- the direction of removal is shown with arrows 17.
- flanks are at the beginning and on End of the first short segment 8 and the edges at the beginning and end of the first long segment 10 perpendicular to the demolding plane 16.
- flank 18 between the first and second long segments 10, 11 is by milling reworked exactly, so that here there are exact angular relationships (indicated by arrows 19, 20) for an accurate and reliable "low" detection by an assigned sensor surrender.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft eine Anordnung einer Nockenwellen-Geberscheibe zur Nockenwellenlageerkennung
an einer Nockenwelle einer Brennkraftmaschine nach dem Oberbegriff des
Anspruchs 1.The invention relates to an arrangement of a camshaft sensor disk for camshaft position detection
on a camshaft of an internal combustion engine according to the preamble of
Bei einer Viertakt-Brennkraftmaschine dreht die Kurbelwelle zweimal je Arbeitsspiel und überstreicht somit einen Winkel von 720°, bevor ein bestimmter Zylinder wieder die gleiche Arbeitsstellung einnimmt. Um die momentane Arbeitsstellung eines Zylinders zu erfassen, reicht es daher nicht aus, die Winkelposition der Kurbelwelle innerhalb einer Umdrehung zu bestimmen. Es muß zudem erfaßt werden, ob sich die Brennkraftmaschine gerade in der ersten oder in der zweiten Hälfte des Arbeitsspiels entsprechend der ersten oder zweiten Kurbelwellenumdrehung befindet. Eine solche Zylindererkennung ist in Verbindung mit einer modernen Brennkraftmaschinensteuerung erforderlich.In a four-stroke internal combustion engine, the crankshaft rotates twice per cycle and sweeps an angle of 720 ° before a certain cylinder is the same again Occupies a working position. To record the current working position of a cylinder, it is therefore not sufficient to close the angular position of the crankshaft within one revolution determine. It must also be detected whether the internal combustion engine is currently in the first or in the second half of the work cycle corresponding to the first or second Crankshaft revolution. Such a cylinder detection is in connection with a modern internal combustion engine control required.
Dazu ist eine Geberanordnung bekannt (EP 0 572 584 B1) mit einer Geberscheibe, die mit der Kurbelwelle verbunden ist und an ihrem Umfang eine Vielzahl gleichartiger Winkelmarken sowie eine Bezugsmarke aufweist. Zudem ist eine zweite Geberscheibe mit der Nockenwelle der Brennkraftmaschine verbunden, die am Umfang unterschiedlich lange Segmente mit Zwischenräumen aufweist. Die Anzahl der Segmente entspricht der Anzahl der Zylinder. Die Hälfte der Segmente besteht aus aufeinanderfolgenden kurzen Segmenten und aufeinanderfolgenden langen Segmenten, wobei zwischen den langen Segmenten kurze Zwischenräume und zwischen den kurzen Segmenten lange Zwischenräume liegen. Zudem liegt gegebenenfalls zwischen den kurzen und langen Segmenten ein kurzer oder langer Trennraum. For this purpose, an encoder arrangement is known (EP 0 572 584 B1) with an encoder disk which is connected to the crankshaft is connected and on its periphery a variety of similar angle marks and has a reference mark. In addition, a second encoder disc with the Camshaft of the internal combustion engine connected to the circumference of different lengths Has segments with spaces. The number of segments corresponds to the number the cylinder. Half of the segments consist of successive short segments and successive long segments, being between the long segments there are short spaces and there are long spaces between the short segments. In addition, there may be a short or between the short and long segments long separation space.
Die Kurbelwellen-Geberscheibe und die Nockenwellen-Geberscheibe werden von Aufnehmern, beispielsweise induktiven Aufnehmern oder Hall-Sensoren abgetastet. Die beim Vorbeilaufen der Winkelmarken bzw. der Segmente in den Aufnehmern erzeugten Signale werden einem Steuergerät zugeführt und dort für eine genaue Zylindererkennung und Lageerkennung ausgewertet. Insbesondere werden Kombinationen aus den elektrischen Signalen unter Berücksichtigung kurzer High- oder Low-Phasen, die den kurzen und langen Segmenten zugeordnet sind, für die Zylindererkennung ausgewertet.The crankshaft encoder disk and the camshaft encoder disk are for example, inductive sensors or Hall sensors. The at The signals generated by the angular marks or the segments in the sensors pass by are fed to a control unit and there for precise cylinder recognition and Position detection evaluated. In particular, combinations of the electrical Signals considering short high or low phases, the short and long Are assigned to segments, evaluated for cylinder recognition.
Die Nockenwellen-Geberscheibe wurde bisher als separate Scheibe hergestellt und zusammen mit der Nockenwelle drehangetrieben verbunden. Die Herstellung der Scheibe, ggf. eine Justierung gegenüber der Nockenstellung und die Montage sind dabei relativ aufwendig. Zudem sind Toleranzen möglich, die bei ungünstigen Verhältnissen zu Fehlerkennungen führen könnenThe camshaft sensor disk was previously manufactured as a separate disk and rotatably connected together with the camshaft. The production of the disc, if necessary, an adjustment to the cam position and the assembly are relative complex. In addition, tolerances are possible, which in unfavorable conditions Errors
Aufgabe der Erfindung ist es, eine gattungsgemäße Anordnung einer Nockenwellen-Geberscheibe zur Nockenwellenlageerkennung an einer Nockenwelle einer Brennkraftmaschine so weiterzubilden, daß bei guter Funktion die Herstellungs- und Montagekosten reduziert werden.The object of the invention is to provide a generic arrangement of a camshaft sensor disk for camshaft position detection on a camshaft of an internal combustion engine so that the manufacturing and assembly costs work well be reduced.
Diese Aufgabe wird mit dem Merkmal des Anspruchs 1 gelöst.This object is achieved with the feature of
Gemäß Anspruch 1 sind die Nockenwellen-Geberscheibe und die Nockenwelle einstückig
und materialeinheitlich als Einheit ausgebildet.According to
Durch die einstückige Ausbildung ist vorteilhaft eine durch die Herstellung bedingte genaue Zuordnung der Geberscheibensegmente zu der Nockenstellung der Nockenwelle gegeben. Zudem ist eine stabile Drehverbindung zwischen der Nockenwellen-Geberscheibe und der Nockenwelle hergestellt. Montagearbeiten zur Anbringung und Verbindung der Geberscheibe an der Nockenwelle entfallen.Due to the one-piece design, an accurate due to the manufacture is advantageous Assignment of the encoder disc segments to the cam position of the camshaft is given. In addition, there is a stable rotary connection between the camshaft sensor disk and the Camshaft manufactured. Assembly work for attaching and connecting the encoder disc on the camshaft are eliminated.
Besonders vorteilhaft werden die Nockenwellen-Geberscheibe und die Nockenwelle einstückig unter Ausbildung der Segmente und zumindest eines Teils der Zwischenräume gegossen. Dabei ist ein einfaches Gießverfahren mit zwei Formkästen möglich, wobei deren Entformebene in einer Mittenlängsebene der Nockenwelle liegt. Bei geeigneter Lage der Nockenwellen-Geberscheibe in den Formkästen treten keine oder nur wenige Flanken an den Segmenten auf, die Hinterschneidungen bilden. Somit können zumindest ein Teil der Segmente und deren Zwischenräume direkt und ohne Nachbearbeitung gegossen werden. Zudem sind wenigstens ein Teil der Segmentlängen und Zwischenraumlängen sowie die zugeordneten Signallängen unkritisch, so daß entsprechende gußbedingte Längentoleranzen für die Zylindererkennung unkritisch sind. Nachbearbeitungen sind somit lediglich dort erforderlich, wo an den Segmenten Hinterschneidungen bezüglich der Entformebene im fertigen Zustand auftreten und diese aufgrund des einfachen Gießverfahrens ohne Einlageteile oder Schieber nicht herstellbar sind. Nachbearbeitungen können auch dort erforderlich werden, wo für eine Zylinder- und Lageerkennung genaue Flankenlagen der Segmente erforderlich sind.The camshaft sensor disk and the camshaft are particularly advantageously made in one piece with the formation of the segments and at least part of the spaces poured. A simple casting process with two mold boxes is possible, their Demoulding plane lies in a central longitudinal plane of the camshaft. If the location is suitable Camshaft encoder disks in the molding boxes have no or only a few flanks the segments that form undercuts. Thus, at least part of the Segments and their gaps can be cast directly and without post-processing. In addition, at least some of the segment lengths and space lengths as well as the assigned signal lengths are not critical, so that corresponding casting-related length tolerances are not critical for cylinder detection. Postprocesses are therefore only required where there are undercuts in the segments with respect to the demoulding plane in the finished state occur and this due to the simple casting process without Insert parts or sliders cannot be produced. Post-processing can also be done there be required where exact flank positions of the cylinder and position detection Segments are required.
Das vorbeschriebene, einfache Gießverfahren mit zwei Formkästen ohne zusätzliche Einlagen ist besonders geeignet für eine Einheit aus einer Nockenwellen-Geberscheibe und einer Nockenwelle, die für eine Brennkraftmaschine mit Vier Zylindern bestimmt ist. Dabei weist die Nockenwellen-Geberscheibe vier Segmente auf, dergestalt, daß auf zwei lange Segmente zwei kurze Segmente folgen, wobei im Anschluß an die langen Segmente kurze Zwischenräume und im Anschluß an die kurzen Segmente lange Zwischenräume liegen.The above-described, simple casting process with two mold boxes without additional inserts is particularly suitable for a unit consisting of a camshaft sensor disc and a camshaft, which is intended for an internal combustion engine with four cylinders. Here the camshaft sensor disk has four segments, such that two are long Segments are followed by two short segments, with short segments following the long segments Gaps and long gaps following the short segments.
Durch eine geeignete Wahl der Entformebene zwischen den zwei Formkästen bezüglich der Drehstellung der Nockenwellen-Geberscheibe können Hinterschneidungen vollständig oder zumindest weitgehend vermieden werden, so daß ein solche Einheit mit Segmenten und Zwischenräumen durch Gießen ohne Nacharbeiten oder nur mit geringen Nachbearbeitungen herstellbar ist.By a suitable choice of the demolding plane between the two mold boxes with respect to the Rotary position of the camshaft sender disc can undercuts completely or at least largely avoided, so that such a unit with segments and Gaps between castings without reworking or only with minor reworking can be produced.
Zweckmäßig wird dabei die Entformebene in eine Radialebene der Nockenwellen-Geberscheibe gelegt, so daß diese einerseits am Ende des ersten langen Zwischenraums und andererseits gegenüberliegend zu Beginn des zweiten langen Segments liegt. Dadurch verlaufen die entsprechenden Segmentflanken in der Entformebene.The demolding plane is expedient in a radial plane of the camshaft encoder disk placed so that this one hand at the end of the first long space and on the other hand is opposite at the beginning of the second long segment. Thereby the corresponding segment flanks run in the demoulding plane.
Weiter können die Flanken zu Beginn und am Ende des ersten kurzen Segments sowie die Flanke am Beginn und ggf. am Ende des ersten langen Segments senkrecht stehend auf der Entformebene gewählt werden, so daß auch bezüglich dieser Flanken eine Entformung ohne Hinterschneidungen möglich ist. The flanks at the beginning and end of the first short segment and the Edge at the beginning and possibly at the end of the first long segment standing upright the demoulding plane can be selected so that demoulding also with respect to these flanks is possible without undercuts.
Insbesondere kann auch der Zwischenraum zwischen den beiden langen Segmenten so ausgeführt werden, daß die Flanke am Ende des ersten langen Segments nicht radial verläuft sondern etwa senkrecht auf der Entformebene steht und somit eine einfache Entformung ohne Hinterschneidungen möglich ist. An dieser Flanke muß ein zugeordneter Sensor in der Regel genau "Low" erkennen, so daß hier eine Nachbearbeitung zu einer genau definierten Flankenstellung zweckmäßig ist. Da eine solche Nachbearbeitung hier ohnehin ggf. erforderlich ist, kann dieser Zwischenraum zwischen den beiden langen Segmenten auch von vorneherein ganz oder teilweise voll gegossen sein und dann nach dem Entformen ausgefräst werden.In particular, the space between the two long segments can also be so that the flank is not radial at the end of the first long segment runs rather perpendicular to the demoulding plane and is therefore a simple one Demolding without undercuts is possible. An assigned must be on this edge Sensor usually recognize exactly "Low", so that post-processing to a precisely defined edge position is appropriate. Because such post-processing here this space between the two long ones may be necessary anyway Segments can also be fully or partially cast from the outset and then after be removed from the mold.
Anhand einer Zeichnung wird ein Ausführungsbeispiel der Erfindung näher erläutert.An exemplary embodiment of the invention is explained in more detail with reference to a drawing.
In Fig. 1 ist eine Einheit 1 aus einer Nockenwellen-Geberscheibe 2 und einer Nockenwelle 3
dargestellt, wobei die Nockenwellen-Geberscheibe 2 und die Nockenwelle 3 als Einheit 1
einstückig und materialeinheitlich mit einem einfachen Gießverfahren mit zwei Formkästen
hergestellt ist.1 shows a
Die Nockenwellen-Geberscheibe 2 und die Nockenwelle 3 rotieren gemeinsam um eine
zentrale Achse 4 im Uhrzeigersinn entsprechend dem Pfeil 5.The
Am Umfang der Nockenwellen-Geberscheibe 2 sind unterschiedlich lange Segmente mit
Zwischenräumen angeordnet, wobei der Scheibendurchmesser entsprechend der Pfeile 6
und 7 in den Segmentbereichen deutlich größer gegenüber den Zwischenraumbereichen ist.Segments of different lengths are included on the circumference of the
Unter Berücksichtigung der Drehrichtung (Pfeil 5) folgen auf ein erstes und zweites kurzes
Segment 8, 9 ein erstes und zweites langes Segment 10, 11. Im Anschluß an die kurzen
Segmente 8, 9 liegt ein erster und zweiter langer Zwischenraum 12, 13 und im Anschluß an
die langen Segmente 10, 11 jeweils ein erster und zweiter kurzer Zwischenraum 14, 15.Taking the direction of rotation (arrow 5) into account, follow first and second
Bei einem Gießverfahren mit zwei Formkästen ohne zusätzliche Einlagen liegt die Entformebene
16 in einer Radialebene einerseits am Ende des ersten langen Zwischenraums 12
bzw. an der Startflanke des zweiten kurzen Segments 9 und andererseits am Ende des
ersten kürzeren Zwischenraums 14 bzw. an der Startflanke des zweiten langen Segments
11. Die Entformungsrichtung ist mit Pfeilen 17 eingezeichnet.In a casting process with two mold boxes without additional inlays, the demoulding level lies
16 in a radial plane on the one hand at the end of the first long space 12
or on the start flank of the second
Damit keine Hinterschneidungen auftreten, stehen zudem die Flanken zu Beginn und am
Ende des ersten kurzen Segments 8 sowie die Flanken am Beginn und Ende des ersten
langen Segments 10 senkrecht auf der Entformebene 16.To ensure that there are no undercuts, the flanks are at the beginning and on
End of the first
Die Flanke 18 zwischen dem ersten und zweiten langen Segment 10, 11 ist durch Fräsen
genau nachgearbeitet, so daß sich hier genaue Winkelverhältnisse (angedeutet durch Pfeile
19, 20) für eine genaue und zuverlässige "Low"-Erkennung durch einen zugeordneten Sensor
ergeben.The
Claims (7)
dadurch gekennzeichnet,
characterized,
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19715856 | 1997-04-16 | ||
| DE19715856A DE19715856B4 (en) | 1997-04-16 | 1997-04-16 | camshaft arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0872631A1 true EP0872631A1 (en) | 1998-10-21 |
| EP0872631B1 EP0872631B1 (en) | 2002-11-13 |
Family
ID=7826671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98105315A Expired - Lifetime EP0872631B1 (en) | 1997-04-16 | 1998-03-24 | Camshaft-angular position identifier disk arrangement for internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0872631B1 (en) |
| DE (2) | DE19715856B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10349844A1 (en) | 2003-10-25 | 2005-05-25 | Dr.Ing.H.C. F. Porsche Ag | Multi-stage manual transmission for an internal combustion engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3930157A1 (en) * | 1989-09-09 | 1991-03-21 | Bosch Gmbh Robert | DEVICE FOR ADJUSTING THE TURNING ANGLE ASSIGNMENT OF A CAMSHAFT TO YOUR DRIVE ELEMENT |
| WO1993012333A1 (en) * | 1991-12-18 | 1993-06-24 | Robert Bosch Gmbh | TRANSMITTER ARRANGEMENT FOR CYLINDER RECOGNITION IN AN INTERNAL COMBUSTION ENGINE WITH n CYLINDERS |
| EP0839990A1 (en) * | 1996-11-01 | 1998-05-06 | Roland Klaar | Assembled camshaft |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5799225A (en) * | 1980-12-11 | 1982-06-19 | V I V Eng Kk | Cam shaft |
| DE3926430C2 (en) * | 1989-08-10 | 1995-09-21 | Audi Ag | Method and device for in-phase adjustment of camshafts |
| DE4141714C2 (en) * | 1991-12-18 | 2002-11-14 | Bosch Gmbh Robert | Control system for an internal combustion engine |
-
1997
- 1997-04-16 DE DE19715856A patent/DE19715856B4/en not_active Expired - Fee Related
-
1998
- 1998-03-24 EP EP98105315A patent/EP0872631B1/en not_active Expired - Lifetime
- 1998-03-24 DE DE59806232T patent/DE59806232D1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3930157A1 (en) * | 1989-09-09 | 1991-03-21 | Bosch Gmbh Robert | DEVICE FOR ADJUSTING THE TURNING ANGLE ASSIGNMENT OF A CAMSHAFT TO YOUR DRIVE ELEMENT |
| WO1993012333A1 (en) * | 1991-12-18 | 1993-06-24 | Robert Bosch Gmbh | TRANSMITTER ARRANGEMENT FOR CYLINDER RECOGNITION IN AN INTERNAL COMBUSTION ENGINE WITH n CYLINDERS |
| EP0572584A1 (en) | 1991-12-18 | 1993-12-08 | Bosch Gmbh Robert | TRANSMITTER ARRANGEMENT FOR CYLINDER RECOGNITION IN AN INTERNAL COMBUSTION ENGINE WITH n CYLINDERS. |
| EP0839990A1 (en) * | 1996-11-01 | 1998-05-06 | Roland Klaar | Assembled camshaft |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59806232D1 (en) | 2002-12-19 |
| DE19715856A1 (en) | 1998-10-29 |
| EP0872631B1 (en) | 2002-11-13 |
| DE19715856B4 (en) | 2005-01-27 |
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