| Title of Invention | MANIFOLD FLANGES FOR MOUNTING ON THE CYLINDER HEAD OF INTERNAL COMBUSTION ENGINE |
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| Abstract | The subject matter of the invention is manifold flanges for mounting on the cylinder head of internal combustion engines. The manifold flange includes a manifold housing (6), a pipe connecting flange (7), and, for each cylinder, an individual flange (2) with fastening means (3). To make handling easier, adjacent individual flanges (2) are joined by an expansion arch (4). |
| Full Text | Heinrich Gillet GmbH, 67480 Edenkoben, Federal Republic of Germany Manifold Flange Description: The invention concerns manifold flanges for mounting on the cylinder head of internal combustion engines, comprising a manifold housing, a pipe connecting flange, and, for each cylinder, an individual flange with fastening means. Manifold flanges for attaching to the cylinder head of internal combustion engines include a manifold housing, which directs the hot exhaust gases emerging from the cylinders to a pipe connecting flange where additional exhaust gas treatment elements are fastened. The fastening of the manifold flange to the cylinder head takes place with the aid of flanges, which are installed with the aid of stud bolts and nuts, or with the aid of screws. A seal is located between the cylinder head and the flange. The manifold housing is heated to temperatures up to approximately 900" C by the hot exhaust gases, causing it to expand accordingly. In contrast, the cylinder attachment flanges reach maximum temperatures of approximately 120° C, since over large areas they are in contact with the cylinder head, which is water cooled. The extreme temperature differences result in corresponding differences in expansion which must be compensated. The manifold housing accommodates some of the difference in expansion. The other part of the difference in expansion is compensated by sliding of the cylinder head attachment flange on the seal. It is a matter of course that the compensation of expansion is optimal when the cylinder head attachment flanges are designed as individual flanges. However, manufacture and installation of manifold flanges with individual flanges is very cumbersome. Each individual flange must be handled individually. Each individual flange must be placed in 2 an installation fixture for installation on the manifold pipes, in which process it is necessary to ensure by suitable means that no interchanging occurs during placement of the three, four, five, etc. individual flanges, which would make the manifold flange defective. This is unsatisfactory. The object of the present invention is to design manifold flanges for mounting on the cylinder head of internal combustion engines such that they can be handled and installed easily, quickly and reliably, without losing the desired properties for compensating differences in thermal expansion. This object is attained in that adjacent individual flanges are joined by expansion arches. The present invention is based on the principle of connecting the individual flanges by expansion arches, which yield elastically to the motions of thermal expansion while still allowing handling comparable to a conventional sheet-metal flange. Measures for preventing interchange of the individual flanges are totally eliminated. According to an advantageous embodiment of the invention, the arches are a single piece with the individual flanges. This permits production with a single stamping operation, which is to say in the shortest possible time. The invention is described in detail in the form of example embodiments, with reference to the drawings. Shown are: Fig. 1 two sets of individual flanges, connected by expansion arches, that have been stamped from a sheet of metal, Fig. 2 part of a set of individual flanges with alternative expansion arches, and Fig. 3 a top view of the underside of a complete manifold flange. 3 Fig. 1 shows a metal sheet 1, for example drawn from a coil, out of which are stamped two sets of individual flanges 2 with fastening openings 3. The individual flanges 2 are offset relative to one another for optimization of cuttings. Adjacent individual flanges 2 of each set are joined together as one piece by an expansion arch 4. These expansion arches 4 are dimensioned such that they are stable enough to allow convenient and reliable handling of the complete set of individual flanges 2 and arches 4, but are also thin and elastic enough to permit movements of thermal expansion during operation of the internal combustion engine. Fig. 2 shows an alternative embodiment. In this example, the expansion arches 5 are considerably longer in design in order to improve the elastic characteristics. In any event, however, this embodiment also ensures that the complete set of individual flanges 2 and expansion arches 5 can be handled without problem in the manufacturing plant until the flanges 2 are firmly attached to the manifold housing of the manifold flange. Fig. 3 shows a top view of the underside of a complete manifold flange. The individual flanges 2, which are joined by their expansion arches 4, are attached, for example welded, to a manifold housing 6. The manifold housing 6 collects the hot exhaust gases emerging from the cylinders of the internal combustion engine (not shown), and conducts them to a manifold connection with pipe flange 7, which is the mechanism for connecting to the other elements of an exhaust system (not shown). 4 Claims: 1. Manifold flange for mounting on the cylinder head of internal combustion engines, comprising - a manifold housing (6), - a pipe connecting flange (7), - and, for each cylinder, an individual flange (2) with fastening means (3), characterized by the feature: - adjacent individual flanges (2) are joined by expansion arches (4, 5). 2. Manifold flange according to claim 1, characterized by the feature: - the expansion arches (4, 5) and the individual flanges (2) are a single piece. Dated this 5th day of DECEMBER 2007 The subject matter of the invention is manifold flanges for mounting on the cylinder head of internal combustion engines. The manifold flange includes a manifold housing (6), a pipe connecting flange (7), and, for each cylinder, an individual flange (2) with fastening means (3). To make handling easier, adjacent individual flanges (2) are joined by an expansion arch (4). |
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01639-kol-2007-correspondence others.pdf
01639-kol-2007-description complete.pdf
01639-kol-2007-priority document.pdf
1639-KOL-2007-(06-11-2013)-CORRESPONDENCE.pdf
1639-KOL-2007-(06-11-2013)-FORM-13.pdf
1639-KOL-2007-(06-11-2013)-OTHERS.pdf
1639-KOL-2007-(06-11-2013)-PA.pdf
1639-KOL-2007-(12-06-2014)-ANNEXURE TO FORM 3.pdf
1639-KOL-2007-(12-06-2014)-CORRESPONDENCE.pdf
1639-KOL-2007-(12-06-2014)-DRAWINGS.pdf
1639-KOL-2007-(12-06-2014)-FORM-1.pdf
1639-KOL-2007-(12-06-2014)-FORM-2.pdf
1639-KOL-2007-(12-06-2014)-OTHERS.pdf
1639-KOL-2007-(12-06-2014)-PA.pdf
1639-KOL-2007-(12-06-2014)-PETITION UNDER RULE 137.pdf
1639-KOL-2007-(27-09-2013)-ABSTRACT.pdf
1639-KOL-2007-(27-09-2013)-ANNEXURE TO FORM 3.pdf
1639-KOL-2007-(27-09-2013)-CLAIMS.pdf
1639-KOL-2007-(27-09-2013)-CORRESPONDENCE.pdf
1639-KOL-2007-(27-09-2013)-DESCRIPTION (COMPLETE).pdf
1639-KOL-2007-(27-09-2013)-DRAWINGS.pdf
1639-KOL-2007-(27-09-2013)-FORM-1.pdf
1639-KOL-2007-(27-09-2013)-FORM-2.pdf
1639-KOL-2007-(27-09-2013)-OTHERS.pdf
1639-KOL-2007-CORRESPONDENCE 1.1.pdf
1639-KOL-2007-CORRESPONDENCE OTHERS 1.1.pdf
1639-KOL-2007-CORRESPONDENCE-1.1.pdf
1639-KOL-2007-PRIORITY DOCUMENT 1.1.pdf
| Patent Number | 263211 | ||||||||
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| Indian Patent Application Number | 1639/KOL/2007 | ||||||||
| PG Journal Number | 42/2014 | ||||||||
| Publication Date | 17-Oct-2014 | ||||||||
| Grant Date | 14-Oct-2014 | ||||||||
| Date of Filing | 05-Dec-2007 | ||||||||
| Name of Patentee | TENNECO GMBH | ||||||||
| Applicant Address | AN DER BUNDESSTRASSE 38, 67480 EDENKOBEN | ||||||||
Inventors:
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| PCT International Classification Number | F16L23/032; F16L23/00 | ||||||||
| PCT International Application Number | N/A | ||||||||
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