Mounting Of A Flap Valve Shaft
AssigneeTenneco Inc.
InventorsMarek RYBARZ, Rico WEINERT
Life of this patent
Estimating the term…
Abstract
The invention relates to a bearing system 1 of a flap valve 6 consisting of a valve shaft 1.1 with a valve shaft pivot 1.2, and consisting of a separate bearing body 2 which is fastened on the end side to the valve shaft 1.1, and of a valve housing wall 3 which has a shaft bearing 3.1 in the form of a depression, the bearing body 2 being guided rotatably in the depression 3.1. Here, the bearing body 2 has a recess 2.1, into which a separate bearing piece 4 is inserted, the valve shaft 1.1 bearing indirectly via the bearing body 2 and the bearing piece 4 against the housing-side shaft bearing 3.1, the bearing body 2 and the bearing piece 4 being formed from different metals or different materials.
Claims10
Bearing system (1) of a flap valve (6) consisting of a valve shaft (1.1) with a valve shaft pivot (1.2) for a valve flap and a bearing body, and consisting of a valve housing wall (3) which has a shaft bearing (3.1) in the form of a depression, the bearing body (2) being guided at least indirectly in the depression (3.1) such that it can be rotated about the valve shaft pivot (1.2), and it being possible for said bearing body (2) to bear at least indirectly against the shaft bearing (3.1) in the axial direction A with respect to the valve shaft pivot (1.2), the bearing body (2) having a recess (2.1), into which a bearing piece (4) is inserted, the bearing piece (4) bearing against the shaft bearing (3.1), with the result that the bearing body (2) is guided such that it can bear indirectly via the bearing piece (4) against the shaft bearing (3.1) and can be rotated about the valve shaft pivot (1.2), characterized in that the bearing body (2) is fastened on the end side to the valve shaft (1.1), and in that the bearing body (2) and the bearing piece (4) are formed from different metals or different materials, or in that the bearing body (2) is formed from metal and the bearing piece (4) is formed from a ceramic material.
Bearing system (1) according to one of the preceding claims, characterized in that the bearing piece (4) and the bearing body (2) have a positively locking connection which acts in the axial direction A with respect to the valve shaft pivot (1.2), the positively locking connection a) being configured as a one-sided stop, against which the bearing piece (4) can bear, or
- b) fixing the bearing piece (4) in the axial direction A with respect to the valve shaft pivot (1.2) in both directions.
Bearing system (1) according to one of the preceding claims, characterized in that, at least at operating temperature, the bearing piece (4) can be moved in the circumferential direction U with respect to the valve shaft pivot (1.2) relative to the bearing body (2) or has a slight play in the radial direction.
Bearing system (1) according to one of the preceding claims, characterized in that a cavity (2.3) is provided within the recess, between the bearing piece (4) and the bearing body (2), in which cavity (2.3) lubricant can be stored.
Bearing system (1) according to one of the preceding claims, characterized in that the recess (2.1) has a beaded edge (2.4) which forms the undercut (2.2) and the positively locking connection with the bearing piece (4) in the axial direction A, the bearing piece (4) having a region B1 with a diameter d1 and a region B2 with a diameter d2, where d1>d2, the region B1 bearing against the beaded edge (2.4) within the recess (2.1) for the purpose of the formation of the positively locking connection.
Flap valve having a valve housing (6.4) for connecting to an exhaust gas system (8) and a valve flap (6.1) with a bearing system (1) according to one of the preceding claims.
Dependencies are inferred from the claim text.