Abstract:
Die Erfindung betrifft eine Schaltbare Abstützvorrichtung für einen Ventiltrieb einer Brennkraftmaschine, umfassend: ein Außenteil (10) mit einem Führungskanal (12); ein Innenteil (14), welches zumindest über einen Längenbereich innerhalb des Führungskanals (12) angeordnet und entlang einer Hauptachse (H) des Führungskanals (12) bewegbar ist; und ein Verriegelungselement (18), welches relativ zum Außenteil (10) zwischen einer die Bewegung des Innenteils (14) zumindest in einer Bewegungsrichtung verunmöglichenden Sperrstellung und einer die Bewegung des Innenteils (14) freigebenden Freigabestellung bewegbar ist, wobei das Verriegelungselement (18) eine Bauteilachse (B) aufweist, welche in der Sperrstellung außerkoaxial und in der Freigabestellung zumindest annähernd koaxial zur Hauptachse (H) des Führungskanals (12) verläuft.
Abstract:
In an internal combustion engine valve drive arrangement having cam elements which are supported on a camshaft so as to be axially displaceable and having switch gates which are coupled to the cam elements and have gate tracks with track segments and switching segments for displaceing the cam elements, the track segments and the switching segments are formed, at least in part, in partial areas of the switch gates.
Abstract:
The invention relates to a valve train device, particularly of an internal combustion engine of a motor vehicle, having a phase adjustment device (10a; 10b; 10c; 10d) for adjusting phasing between at least one primary cam (11a-18a; 11b-18b; 11c, 13c-18c; 11d-18d) and at least one secondary cam (19a-26a; 19b-26b; 19c-27c; 19d-26d) belonging to the same category and/or disposed coaxially to each other, and of which at least one is associated with a pair of cams (28a-35a; 28b-35b; 28c-35c; 28d-35d) providing a valve lift changeover.
Abstract:
The invention relates to a motor vehicle valve train adjustment device comprising at least one camshaft (10a; 10b) which comprises at least four axially displaceable cam elements (11, 12a, 13a, 14a; 11b, 12b, 13b, 14b, 15b, 16b). Each set of two cam elements (11a, 12a, 13a, 14a; 11b, 12b, 13b, 14b, 15b, 16b) that are adjacent to each other is designed as a cam element group to be jointly actuated (17a, 18a; 17b, 18b, 19b).
Abstract:
The invention relates to a motor vehicle valve train adjustment device comprising at least one camshaft (10, 11) which comprises at least two axially displaceably arranged cam elements (12, 13, 14, 15, 16, 17, 18, 19), at least one cam element (13, 14, 17, 18) of the at least two cam elements (12, 13, 14, 15, 16, 17, 18, 19) having a cam track (20, 21, 22, 23, 24, 25, 26, 27) with valve lift and having a cam track (28, 29, 30, 31, 32, 33, 34, 35) with zero lift for cylinder deactivation. The at least one other cam element (12, 15, 16, 19) of the at least two cam elements (12, 13, 14, 15, 16, 17, 18, 19) has a cam track (36, 37, 38, 39, 40, 41, 42, 43) with a first valve lift and has a cam track (44, 45, 46, 47, 48, 49, 50, 51) with a second valve lift.
Abstract:
The invention is based on a cam element for a valve-gear device of an internal combustion engine, with at least one cam (10) which has at least two partial cams (11, 12) which are arranged next to one another, have a common base circle phase in at least one angular range (13) of the cam shaft and are provided for switching over a valve lift by displacing a cam follower from one of the partial cams (11, 12) to another of the partial cams (11, 12). It is proposed that the partial cams (11, 12) have an overlapping arrangement.
Abstract:
The invention relates to an internal combustion engine valve device for a motor vehicle, having at least one switching slotted guide (10a; 10b) which is provided for converting a rotational movement (11a; 11b) of at least one cam element (12a, 13a; 12b, 13b) into an axial movement (14a; 14b) of the at least one cam element (12a, 13a; 12b, 13b) for the purpose of lift switching, having at least one first actuator (15a; 15b) which is provided for axially displacing a first cam element (12a; 12b) in a switching direction (16a; 16b) by means of an operative connection to the switching slotted guide (10a; 10b), having a second actuator (17a; 17b) which is provided for axially displacing a second cam element (13a; 13b) in the same switching direction (16a; 16b) by means of an operative connection to the switching slotted guide (10a; 10b), and having a control and/or regulating unit (18a; 18b). It is proposed that the control and/or regulating unit (18a; 18b) is provided for activating and/or monitoring the at least two actuators (15a, 17a; 15b, 17b) simultaneously for the purpose of axially displacing the at least two cam elements (12a, 13a; 12b, 13b) in the same switching direction (16a; 16b).