EP0849465B1 - Screw-type sleeve for pre-centering - Google Patents
Screw-type sleeve for pre-centering Download PDFInfo
- Publication number
- EP0849465B1 EP0849465B1 EP97115780A EP97115780A EP0849465B1 EP 0849465 B1 EP0849465 B1 EP 0849465B1 EP 97115780 A EP97115780 A EP 97115780A EP 97115780 A EP97115780 A EP 97115780A EP 0849465 B1 EP0849465 B1 EP 0849465B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- screw sleeve
- induction system
- cylinder head
- threaded sleeve
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
- F02M35/10078—Connections of intake systems to the engine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/006—Camshaft or pushrod housings
- F02F2007/0063—Head bolts; Arrangements of cylinder head bolts
-
- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10321—Plastics; Composites; Rubbers
Definitions
- the present invention relates to an intake system with at least one device for attachment to a cylinder head for cylinders of an internal combustion engine according to the preamble of the main claim.
- suction systems to cylinder heads, in particular motor vehicle engines
- the attachment is usually effected by means of conventional sleeve screw systems. It turns out to be disadvantageous during assembly that the intake system must be held on the cylinder head until it has been screwed on.
- the utility model DE 94 16 059 U shows a device for fastening a carburetor housing to an engine block.
- a sleeve is screwed together with a nut into an internal thread provided on the carburetor housing.
- the nut held by the sleeve on the carburetor housing is screwed to the thread provided on the engine block.
- the present invention relates to an intake system, in particular for cylinders of an internal combustion engine with at least one device for attachment to a cylinder head, according to claim 1.
- a suction system has the advantage that it can be simply plugged onto, for example, stud bolts of the cylinder head and pre-centering is carried out by means of the pre-centering section.
- the suction system therefore does not have to be held firmly when screwing on, but is already fixed by plugging the pre-centering section onto the bolt.
- the suction system can then be screwed on quickly, and automated assembly is advantageously possible.
- the invention accordingly enables a particularly safe and simple assembly of suction systems on the cylinder head, in particular of motor vehicle engines.
- the invention relates to a suction system with a bore for receiving the screw sleeve, the bore having an annular step or constriction or individual constrictions, such as knobs, arranged in a ring, on which a shoulder advantageously arranged on the outside of the screw sleeve can be supported that the screw sleeve can be pushed back when plugged onto a bolt of the cylinder head, but the screw sleeve is secured against being pushed out.
- the inner diameter of the precentering section is larger than the inner diameter of the threaded section of the Threaded.
- the threaded section of the screw sleeve is the area of the screw sleeve which is arranged between the precentering section and the screw sleeve middle section and has an internal thread which serves to receive a bolt or the like connecting the suction system to the cylinder head.
- the invention also includes embodiments whose screw sleeves do not have a screw sleeve middle section, but essentially only comprise the pre-centering section, the threaded section and a screw sleeve head.
- FIG. 1 a shows part of a suction system 5 comprising an upper part 1 and a lower part 3.
- the suction system 5 is fastened on a cylinder head 9 having a stud bolt 7.
- the suction system 5 has for its attachment to the cylinder head 9 inner bores 11, in each of which a screw sleeve 13 is inserted captively.
- the screw sleeve 13 has a precentering section 17 on.
- the pre-centering section 17 has no thread.
- a threaded section 19 having a shaped thread is arranged between the screw sleeve middle section 21 and the pre-centering section 17.
- the screw sleeve 13 has at its end 23 facing away from the cylinder head 9 a screw sleeve head 25 which can be designed as an external hexagon.
- the screw sleeve head 25 has an annular shoulder 27, which is used to support a wall 28 of a bore 26 in the upper part 1 of the suction system 5.
- the screw sleeve head 25 also serves to receive a plastic stopper 29 which closes the screw sleeve 13 in a water-tight manner.
- the screw sleeves 13 are first inserted captively into the bore 11 of the plastic suction system 5 due to the shoulder 27 and a further device 31 to be explained.
- the suction system is then placed on studs 7, in particular the upper regions 8 thereof, so that it is not necessary to hold the suction system during the subsequent screwing on.
- the inner bore 11 has an annular constriction 31 or individual constrictions, such as knobs, arranged in a ring, which allows the screw sleeve 13 to be pushed back when it is plugged onto the stud bolt 7 due to a circumferential expansion of the threaded section 19, but prevents the screw sleeve from being pushed out, in particular due to shoulder 22 arranged in the transition region of the pre-centering section 17 to the threaded section 19 (FIG. 1b).
- the suction system 5 can be screwed on very quickly, with the particularly long screw sleeves 13 ensuring good accessibility when screwing.
- FIG. 2a shows a screw sleeve 13 with a pre-centering section 17, a threaded section 19, a screw sleeve middle section 21 and a screw sleeve head 25 having a shoulder 27 20 having threaded portion 19 corresponds.
- the outside diameter of the pre-centering section 17 is slightly larger than the outside diameter of the threaded section 19, which in turn has a larger outside diameter than the screw sleeve middle section 21.
- annular step or shoulder 22 In the transition area from the threaded section 19 to the pre-centering section 17 there is an annular step or shoulder 22.
- the screw sleeve head 25 has an enlarged inside and outside diameter compared to the screw sleeve middle section 21.
- Another annular step 24 (FIG. 2 b) is located in the transition area between the threaded middle section 21 and the screw sleeve head 25.
- the outer diameter in the pre-centering section 17 and between the annular step 24 and shoulder 27 serves to guide the screw sleeve 13 in the plastic part. In these areas, large lateral forces can be safely transmitted via the outer ring surfaces.
- the shoulder 22 is arranged so that the screw sleeve 13 can slide back into the bore 11.
- the screw sleeve 13 is inserted into the inner bore 11 or 26 of the suction system 5, slipping in the direction of the cylinder head 9 being prevented by the formation of the shoulder 27. Slipping of the screw sleeve 13 when plugged onto the stud 7 is prevented by the formation of the annular step or shoulder 22, which comes into positive engagement with the annular constriction 31 of the inner bore 11 and fixes the screw sleeve 13 in its position.
- FIG. 2 also clearly shows that when the suction system 5 is plugged onto the cylinder head 9, the upper region 8 of the stud bolt 7 can initially penetrate into the pre-centering section 17 without any further manipulation and thus holds the suction system 5 on the cylinder head 9. The screw sleeve 13 is then screwed tight, the threaded section 19 of the screw sleeve 13 being screwed onto the stud bolt 7.
Description
Die vorliegende Erfindung betrifft eine Sauganlage mit mindestens einer Vorrichtung zur Befestigung an einem Zylinderkopf für Zylinder eines Brennkraftmotors gemäß dem Oberbegriff des Hauptanspruchs.The present invention relates to an intake system with at least one device for attachment to a cylinder head for cylinders of an internal combustion engine according to the preamble of the main claim.
Die Befestigung von Sauganlagen an Zylinderköpfen, insbesondere von Kraftfahrzeugmotoren, ist bekannt. Üblicherweise wird die Befestigung mittels herkömmlicher Hülsen-Schraubsysteme bewirkt. Als nachteilig erweist sich bei der Montage, dass die Sauganlage so lange am Zylinderkopf festgehalten werden muss, bis das Anschrauben erfolgt ist.The attachment of suction systems to cylinder heads, in particular motor vehicle engines, is known. The attachment is usually effected by means of conventional sleeve screw systems. It turns out to be disadvantageous during assembly that the intake system must be held on the cylinder head until it has been screwed on.
Das Gebrauchsmuster DE 94 16 059 U zeigt eine Vorrichtung zur Befestigung eines Vergasergehäuses an einem Motorblock. Bei dieser Vorrichtung wird in einem ersten Schraubvorgang eine Hülse zusammen mit einer Mutter in ein an dem Vergasergehäuse vorgesehenes Innengewinde hineingeschraubt. In einem zweiten Schraubvorgang wird dann die von der Hülse am Vergasergehäuse gehaltene Mutter mit dem am Motorblock vorgesehenen Gewinde verschraubt.The utility model DE 94 16 059 U shows a device for fastening a carburetor housing to an engine block. In this device, in a first screwing operation, a sleeve is screwed together with a nut into an internal thread provided on the carburetor housing. In a second screwing process, the nut held by the sleeve on the carburetor housing is screwed to the thread provided on the engine block.
Bei dieser Vorrichtung sind eine Vielzahl von Bauteilen sowie mehrere Schraubvorgänge und mehrere aufwendige Gewinde erforderlich, was einen erheblichen Herstellungsaufwand bedeutet.With this device, a large number of components as well as several screwing operations and several complex threads are required, which means a considerable manufacturing outlay.
Die vorliegende Erfindung betrifft eine Sauganlage, insbesondere für Zylinder eines Brennkraftmotors mit mindestens einer Vorrichtung zur Befestigung an einem Zylinderkopf, nach Anspruch 1. Eine derartige Sauganlage weist den Vorteil auf, daß sie auf beispielsweise Stehbolzen des Zylinderkopfs einfach aufgesteckt werden kann und dabei mittels des Vorzentrierabschnitts eine Vorzentrierung vorgenommen wird. Die Sauganlage muß also beim Anschrauben nicht extra festgehalten werden, sondern ist bereits durch das Aufstecken des Vorzentrierabschnittes auf den Bolzen fixiert. Anschließend kann die Sauganlage schnell angeschraubt werden, wobei in vorteilhafter Weise eine automatisierte Montage möglich ist. Die Erfindung ermöglicht demgemäß eine besonders sichere und einfache Montage von Sauganlagen an den Zylinderkopf, insbesondere von Kraftfahrzeugmotoren.The present invention relates to an intake system, in particular for cylinders of an internal combustion engine with at least one device for attachment to a cylinder head, according to claim 1. Such a suction system has the advantage that it can be simply plugged onto, for example, stud bolts of the cylinder head and pre-centering is carried out by means of the pre-centering section. The suction system therefore does not have to be held firmly when screwing on, but is already fixed by plugging the pre-centering section onto the bolt. The suction system can then be screwed on quickly, and automated assembly is advantageously possible. The invention accordingly enables a particularly safe and simple assembly of suction systems on the cylinder head, in particular of motor vehicle engines.
Die Erfindung betrifft in einer besonders bevorzugten Ausführungsform eine Sauganlage mit einer Bohrung zur Aufnahme der Schraubhülse, wobei die Bohrung eine ringförmige Stufe oder Verengung oder ringförmig angeordnete einzelne Verengungen, wie Noppen, aufweist, an der sich eine vorteilhafterweise an der Schraubhülsenaußenseite angeordnete Schulter so abstützen kann, daß ein Zurückschieben der Schraubhülse beim Aufstecken auf einen Bolzen des Zylinderkopfes erfolgen kann, die Schraubhülse aber gegen Ausschieben gesichert ist.In a particularly preferred embodiment, the invention relates to a suction system with a bore for receiving the screw sleeve, the bore having an annular step or constriction or individual constrictions, such as knobs, arranged in a ring, on which a shoulder advantageously arranged on the outside of the screw sleeve can be supported that the screw sleeve can be pushed back when plugged onto a bolt of the cylinder head, but the screw sleeve is secured against being pushed out.
In einer besonders bevorzugten Ausführungsform ist der Innendurchmesser des Vorzentrierabschnittes, das heißt des Abschnittes der Schraubhülse, der an dem dem zu befestigenden Zylinderkopf zugewandten Ende der Schraubhülse angeordnet ist, größer als der Innendurchmesser des Gewindeabschnittes der Schraubhülse. Der Gewindeabschnitt der Schraubhülse ist der Bereich der Schraubhülse, der zwischen dem Vorzentrierabschnitt und dem Schraubhülsenmittelabschnitt angeordnet ist und ein Innengewinde aufweist, welches der Aufnahme eines die Sauganlage mit dem Zylinderkopf verbindenden Bolzens oder dergleichen dient. Die Erfindung umfaßt auch Ausführungsformen, deren Schraubhülsen keinen Schraubhülsenmittelabschnitt aufweisen, sondern im wesentlichen nur den Vorzentrierabschnitt, den Gewindeabschnitt und einen Schraubhülsenkopf umfassen.In a particularly preferred embodiment, the inner diameter of the precentering section, that is to say the section of the screw sleeve which is arranged on the end of the screw sleeve facing the cylinder head to be fastened, is larger than the inner diameter of the threaded section of the Threaded. The threaded section of the screw sleeve is the area of the screw sleeve which is arranged between the precentering section and the screw sleeve middle section and has an internal thread which serves to receive a bolt or the like connecting the suction system to the cylinder head. The invention also includes embodiments whose screw sleeves do not have a screw sleeve middle section, but essentially only comprise the pre-centering section, the threaded section and a screw sleeve head.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen zu entnehmen.Further advantageous embodiments of the invention can be found in the subclaims.
Die Erfindung wird im folgenden anhand von Zeichnungen und einem Ausführungsbeispiel näher erläutert. Es zeigen:
- Figur 1a/b
- einen Längsschnitt durch einen Teil einer Sauganlage und eines Zylinderkopfes und
- Figur 2a/b
- einen Längsschnitt durch eine Schraubenhülse.
- Figure 1a / b
- a longitudinal section through part of an intake system and a cylinder head and
- Figure 2a / b
- a longitudinal section through a screw sleeve.
Die Figur 1a zeigt einen Teil einer ein Oberteil 1 und ein Unterteil 3 umfassenden Sauganlage 5. Die Sauganlage 5 ist auf einem Stehbolzen 7 aufweisenden Zylinderkopf 9 befestigt. Die Sauganlage 5 weist zu ihrer Befestigung an dem Zylinderkopf 9 innere Bohrungen 11 auf, in die jeweils eine Schraubhülse 13 verliersicher vorgesteckt ist. Die Schraubhülse 13 weist an ihrem dem Zylinderkopf 9 zugewandten Ende 15 einen Vorzentrierabschnitt 17 auf. Der Vorzentrierabschnitt 17 weist kein Gewinde auf. Zwischen dem Schraubhülsenmittelabschnitt 21 und dem Vorzentrierabschnitt 17 ist ein ein geformtes Gewinde aufweisender Gewindeabschnitt 19 angeordnet. Die Schraubhülse 13 weist an ihrem dem Zylinderkopf 9 abgewandten Ende 23 einen Schraubhülsenkopf 25 auf, der als Außen-Sechskant ausgeführt sein kann. Der Schraubhülsenkopf 25 weist eine ringförmige Schulter 27 auf, die dem Abstützen an einer Wand 28 einer Bohrung 26 des Oberteils 1 der Sauganlage 5 dient. Der Schraubhülsenkopf 25 dient ferner der Aufnahme eines Kunststoffstopfens 29, der die Schraubhülse 13 spritzwasserdicht verschließt.FIG. 1 a shows part of a suction system 5 comprising an upper part 1 and a lower part 3. The suction system 5 is fastened on a cylinder head 9 having a stud bolt 7. The suction system 5 has for its attachment to the cylinder head 9 inner bores 11, in each of which a screw sleeve 13 is inserted captively. At its end 15 facing the cylinder head 9, the screw sleeve 13 has a precentering section 17 on. The pre-centering section 17 has no thread. A threaded section 19 having a shaped thread is arranged between the screw sleeve middle section 21 and the pre-centering section 17. The screw sleeve 13 has at its end 23 facing away from the cylinder head 9 a screw sleeve head 25 which can be designed as an external hexagon. The screw sleeve head 25 has an annular shoulder 27, which is used to support a wall 28 of a bore 26 in the upper part 1 of the suction system 5. The screw sleeve head 25 also serves to receive a plastic stopper 29 which closes the screw sleeve 13 in a water-tight manner.
Zur Herstellung der in Figur 1 dargestellten festen Verbindung zwischen Sauganlage 5 und Zylinderkopf 9 werden zunächst die Schraubhülsen 13 verliersicher aufgrund der Schulter 27 und einer noch zu erläuternden weiteren Vorrichtung 31 in die Bohrung 11 der Kunststoffsauganlage 5 vorgesteckt. Die Sauganlage wird sodann auf Stehbolzen 7, insbesondere deren obere Bereiche 8 aufgesteckt, so daß ein Halten der Sauganlage während des sich an das Aufstecken anschließenden Anschraubens nicht notwendig ist. Die innere Bohrung 11 weist eine ringförmige Verengung 31 oder ringförmig angeordnete einzelne Verengungen, wie Noppen, auf, die ein Zurückschieben der Schraubhülse 13 beim Aufstecken auf den Stehbolzen 7 aufgrund einer Umfangserweiterung des Gewindeabschnittes 19 ermöglicht, das Ausschieben der Schraubhülse aber verhindert, insbesondere aufgrund einer im Übergangsbereich des Vorzentrierabschnitts 17 zum Gewindeabschnitt 19 angeordneten Schulter 22 (Figur 1b).To produce the fixed connection shown in FIG. 1 between the suction system 5 and the cylinder head 9, the screw sleeves 13 are first inserted captively into the bore 11 of the plastic suction system 5 due to the shoulder 27 and a further device 31 to be explained. The suction system is then placed on studs 7, in particular the upper regions 8 thereof, so that it is not necessary to hold the suction system during the subsequent screwing on. The inner bore 11 has an annular constriction 31 or individual constrictions, such as knobs, arranged in a ring, which allows the screw sleeve 13 to be pushed back when it is plugged onto the stud bolt 7 due to a circumferential expansion of the threaded section 19, but prevents the screw sleeve from being pushed out, in particular due to shoulder 22 arranged in the transition region of the pre-centering section 17 to the threaded section 19 (FIG. 1b).
Die Sauganlage 5 läßt sich so sehr schnell anschrauben, wobei durch die besonders langen Schraubenhülsen 13 eine gute Zugänglichkeit beim Schrauben gewährleistet ist.The suction system 5 can be screwed on very quickly, with the particularly long screw sleeves 13 ensuring good accessibility when screwing.
Die Figur 2a zeigt eine Schraubhülse 13 mit einem Vorzentrierabschnitt 17, einem Gewindeabschnitt 19 einem Schraubhülsenmittelabschnitt 21 und einem eine Schulter 27 aufweisenden Schraubhülsenkopf 25. Der Figur 2 ist zu entnehmen, daß die Länge des kein Innengewinde aufweisenden Vorzentrierabschnitt 17 in etwa der Länge des ein Innengewinde 20 aufweisenden Gewindeabschnitts 19 entspricht. Der Außendurchmesser des Vorzentrierabschnittes 17 ist geringfügig größer als der Außendurchmesser des Gewindeabschnitts 19, der wiederum einen größeren Außendurchmesser als der Schraubhülsenmittelabschnitt 21 aufweist. Im Übergangsbereich von Gewindeabschnitt 19 zum Vorzentrierabschnitt 17 befindet sich eine ringförmige Stufe oder Schulter 22. Der Schraubhülsenkopf 25 weist einen gegenüber dem Schraubhülsenmittelabschnitt 21 vergrößerten Innen- und Außendurchmesser auf. Im Übergangsbereich zwischen Gewindemittelabschnitt 21 und Schraubhülsenkopf 25 befindet sich eine weitere ringförmige Stufe 24 (Figur 2b).FIG. 2a shows a screw sleeve 13 with a pre-centering section 17, a threaded section 19, a screw sleeve middle section 21 and a screw sleeve head 25 having a shoulder 27 20 having threaded portion 19 corresponds. The outside diameter of the pre-centering section 17 is slightly larger than the outside diameter of the threaded section 19, which in turn has a larger outside diameter than the screw sleeve middle section 21. In the transition area from the threaded section 19 to the pre-centering section 17 there is an annular step or shoulder 22. The screw sleeve head 25 has an enlarged inside and outside diameter compared to the screw sleeve middle section 21. Another annular step 24 (FIG. 2 b) is located in the transition area between the threaded middle section 21 and the screw sleeve head 25.
Der Außendurchmesser im Vorzentrierabschnitt 17 und zwischen ringförmiger Stufe 24 und Schulter 27 dient zur Führung der Schraubhülse 13 im Kunstoffteil. In diesen Bereichen können über die Außenringflächen große Querkräfte sicher übertragen werden. Die Schulter 22 ist so angeordnet, daß die Schraubhülse 13 in der Bohrung 11 zurückrutschen kann.The outer diameter in the pre-centering section 17 and between the annular step 24 and shoulder 27 serves to guide the screw sleeve 13 in the plastic part. In these areas, large lateral forces can be safely transmitted via the outer ring surfaces. The shoulder 22 is arranged so that the screw sleeve 13 can slide back into the bore 11.
Die Schraubhülse 13 wird in die innere Bohrung 11 beziehungsweise 26 der Sauganlage 5 vorgesteckt, wobei ein Verrutschen in Richtung des Zylinderkopfes 9 durch die Ausbildung der Schulter 27 verhindert wird. Ein Verrutschen der Schraubhülse 13 beim Aufstecken auf den Stehbolzen 7 wird durch die Ausbildung der ringförmigen Stufe oder Schulter 22 verhindert, die in Formschluß mit der ringförmigen Verengung 31 der inneren Bohrung 11 tritt und die Schraubhülse 13 in ihrer Position fixiert.The screw sleeve 13 is inserted into the inner bore 11 or 26 of the suction system 5, slipping in the direction of the cylinder head 9 being prevented by the formation of the shoulder 27. Slipping of the screw sleeve 13 when plugged onto the stud 7 is prevented by the formation of the annular step or shoulder 22, which comes into positive engagement with the annular constriction 31 of the inner bore 11 and fixes the screw sleeve 13 in its position.
Der Figur 2 ist auch deutlich zu entnehmen, daß beim Aufstecken der Sauganlage 5 auf den Zylinderkopf 9 der obere Bereich 8 des Stehbolzen 7 zunächst ohne jegliche weitere Manipulation in den Vorzentrierabschnitt 17 eindringen kann und so die Sauganlage 5 auf dem Zylinderkopf 9 festhält. Anschließend wird die Schraubhülse 13 festgeschraubt, wobei der Gewindeabschnitt 19 der Schraubhülse 13 auf den Stehbolzen 7 geschraubt wird.FIG. 2 also clearly shows that when the suction system 5 is plugged onto the cylinder head 9, the upper region 8 of the stud bolt 7 can initially penetrate into the pre-centering section 17 without any further manipulation and thus holds the suction system 5 on the cylinder head 9. The screw sleeve 13 is then screwed tight, the threaded section 19 of the screw sleeve 13 being screwed onto the stud bolt 7.
Claims (6)
- Induction system, in particular for an internal combustion engine, having at least one device for fastening to a cylinder head (9) of the engine, the device comprising a threaded sleeve (13) arranged in a bore (11) of the induction system and the threaded sleeve (13) having an internal thread (19) and a precentring section (17) at its end (15) facing the cylinder head (9).
- Induction system according to Claim 1, characterized in that the precentring section (17) serves to accommodate a pin (7).
- Induction system according to one of the preceding claims, characterized in that the internal thread (19) is formed by a thread section (19) arranged between the precentring section (17) and a threaded-sleeve centre section (21).
- Induction system according to one of the preceding claims, characterized in that the length (G) of the internal thread (19) is greater than or equal to the length (Z) of the precentring section (17).
- Induction system according to one of the preceding claims, characterized in that the threaded sleeve (13) has an annular shoulder (22) in a transitional region between the precentring section (17) and internal thread (19).
- Induction system according to one of the preceding claims, characterized in that the bore (11) of the induction system (5) has an annular constriction or individual lugs (31), on which constriction or lugs the annular shoulder (22) of the threaded sleeve (13) is supported, such that the threaded sleeve (13) can be pushed back when it is being fitted onto the pin (7) but the threaded sleeve is protected against being pushed out.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19652748A DE19652748C1 (en) | 1996-12-18 | 1996-12-18 | Suction unit, particularly for internal combustion engine |
| DE19652748 | 1996-12-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0849465A2 EP0849465A2 (en) | 1998-06-24 |
| EP0849465A3 EP0849465A3 (en) | 1998-10-28 |
| EP0849465B1 true EP0849465B1 (en) | 2003-09-10 |
Family
ID=7815182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97115780A Expired - Lifetime EP0849465B1 (en) | 1996-12-18 | 1997-09-11 | Screw-type sleeve for pre-centering |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0849465B1 (en) |
| CZ (1) | CZ289160B6 (en) |
| DE (2) | DE19652748C1 (en) |
| HU (1) | HU221291B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11767805B2 (en) * | 2019-12-24 | 2023-09-26 | Fleetguard Filters Private Limited | Cylinder cover for internal combustion engine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4372120A (en) * | 1979-10-26 | 1983-02-08 | General Motors Corporation | V-Type engine intake with vibration isolated manifold connector |
| US4428331A (en) * | 1981-09-04 | 1984-01-31 | General Motors Corporation | V-Type engine intake with vibration isolated manifold |
| US4470378A (en) * | 1982-09-29 | 1984-09-11 | General Motors Corporation | Engine with side wall mounted vibration isolated manifold |
| DE4221913C1 (en) * | 1992-07-03 | 1994-01-27 | Freudenberg Carl Fa | Intake manifold for an internal combustion engine with a cylinder head |
| JPH0874677A (en) * | 1994-08-31 | 1996-03-19 | Nissan Motor Co Ltd | Mounted structure of egr valve in internal combustion engine |
| DE9416059U1 (en) * | 1994-10-05 | 1994-12-01 | Hahn Karlheinz | Carburettor housing |
| JPH08246951A (en) * | 1995-03-09 | 1996-09-24 | Nissan Motor Co Ltd | Internal combustion engine with intake manifold internal type locker cover |
-
1996
- 1996-12-18 DE DE19652748A patent/DE19652748C1/en not_active Expired - Fee Related
-
1997
- 1997-09-11 DE DE59710729T patent/DE59710729D1/en not_active Expired - Lifetime
- 1997-09-11 EP EP97115780A patent/EP0849465B1/en not_active Expired - Lifetime
- 1997-12-16 CZ CZ19974045A patent/CZ289160B6/en not_active IP Right Cessation
- 1997-12-17 HU HU9702483A patent/HU221291B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DE59710729D1 (en) | 2003-10-16 |
| HU9702483D0 (en) | 1998-03-02 |
| CZ289160B6 (en) | 2001-11-14 |
| HUP9702483A3 (en) | 2000-07-28 |
| EP0849465A3 (en) | 1998-10-28 |
| HU221291B1 (en) | 2002-09-28 |
| EP0849465A2 (en) | 1998-06-24 |
| CZ404597A3 (en) | 1998-09-16 |
| HUP9702483A2 (en) | 1999-11-29 |
| DE19652748C1 (en) | 1997-12-18 |
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