公开(公告)号：DE102015211122A1

公开(公告)日：2016-12-22

申请号：DE102015211122

申请日：2015-06-17

Applicant: SCHAEFFLER TECHNOLOGIES AG

Inventor： JUNKER MARCO ,  GEYER NORBERT

IPC: F01L1/18 ,  F01L1/255

Abstract: Vorgeschlagen ist ein Übertragungselement in Form eines Kipp- (1) oder Schwenkhebels für Hubkolbenbrennkraftmaschinen, das einerseits von einem Nocken einer Nockenwelle betätigbar ist und andererseits direkt oder unter Zwischenschaltung einer Ventilbrücke mit zumindest einem Gaswechselventil in Wirkverbindung steht, wobei das Übertragungselement ein hydraulisches Ventilspiel-Ausgleichselement, im Folgenden auch „HVA“ genannt, aufweist und wobei das hydraulische Ventilspiel-Ausgleichselement dem Übertragungselement vorgelagert und an diesem befestigt ist.

公开(公告)号：DE112015000607T5

公开(公告)日：2016-11-10

申请号：DE112015000607

申请日：2015-03-04

Applicant: CATERPILLAR INC

Inventor： CYBORSKI DAVID ANDREW

IPC: F01L1/255

Abstract: Ein Hydrostößel (30) für einen Ventiltrieb (10) einer Verbrennungskraftmaschine nutzt die Eigenschaft einer Teilrückführung, um eine Vorrichtungskühlung bereitstellen, während ferner viele der Vorteile, die mit einer Leck-Rückführung verbunden sind, bewahrt werden. Der Hydrostößel (30) weist einen Hohlkolben (40) auf, der in einer axialen Bohrung (33) eines körperhaften Bauteils (31) aufgenommen wird. Der Ringspaltbereich (71) zwischen dem Hohlkolben (40) und dem Körper (31) definiert mehrere Leck-Abflusspfade (72) und mehrere Leck-Rückführungspfade (71). Der Teil des ausgetretenen Öls, der rückgeführt wird, ist von gleicher Größenordnung wie der restliche Teil des ausgetretenen Öls, dem ermöglicht wird, zur Ölwanne zurückzufließen.

公开(公告)号：FI121245B

公开(公告)日：2010-08-31

申请号：FI20086021

申请日：2008-10-29

Applicant: WAERTSILAE FINLAND OY

Inventor： SUNDSTEN MAGNUS

IPC: F01L1/255 ,  F01L9/02

Abstract: A control arrangement for, and a method for controlling the closing movement of, a valve operating assembly in a piston engine adapted between a cam device (5) of a camshaft (4) of the engine (1 ) and an inlet valve mechanism (6) arranged to open and close the inlet valve (3) in association with a cylinder of the engine. The control arrangement (7) comprises a body part (8), in which a piston de¬ vice (9) is movably arranged to be in force transmission connection with the camshaft (4) and the valve mechanism (6), the body part (8) and the piston device (9) together defining a first chamber (13), into which hydraulic medium can be selectively fed for providing a delay in the closing of the inlet valve (3). The body part (8) is provided with a first duct (16) for releasing of pressure in the first chamber (13) under control of a gu ide member (10) movably arranged in the body part (8) between the cam device (5) and the piston device (9). The guide member (10) includes a third chamber (18), which is arranged to be in communication with the first duct (16) and a control piston (20) located in said third chamber (18) and movably arranged with regard to the guide member (10) for controlling pressure medium flow through said third chamber (18).

公开(公告)号：DE102007011834A1

公开(公告)日：2008-04-17

申请号：DE102007011834

申请日：2007-03-12

Applicant: HYUNDAI MOTOR CO LTD

Inventor： OH CHUNG HAN

IPC: F01L1/18 ,  F01L1/255

Abstract: A variable valve lift follower for a vehicle includes an outer body receiving a rotational force from a high lift cam; an inner body with a first end portion hinge-connected with the outer body, receiving a rotational force from a low lift cam; a hydraulic lash adjuster (HLA) contact portion for supplying oil to the first end portion of the inner body; a valve contact portion on a second end of the inner body; and a knock pin on the top of the valve contact portion, connecting the outer body to the inner body during high lift.

公开(公告)号：DE102004035588A1

公开(公告)日：2006-02-16

申请号：DE102004035588

申请日：2004-07-22

Applicant: INA SCHAEFFLER KG

Inventor： SAILER PETER ,  SCHNELL OLIVER

IPC: F01L1/24 ,  F01L1/245 ,  F01L1/25 ,  F01L1/255

Abstract: A hydraulic reverse spring valve clearance compensation element (RSHVA) for a valve train of an internal combustion engine comprising: a housing ( 2 ), which has a blind bore ( 3 ), in which a piston ( 4 ) is guided with a tight, sealing clearance; the piston ( 4 ) comprises a lower piston part ( 4 a) with a lower piston head ( 5 ), which together with the blind bore ( 3 ) defines a high-pressure chamber ( 7 ), whilst a low-pressure chamber ( 8 ) is situated above the lower piston head ( 5 ); the pressure chambers ( 7, 8 ) being connected by a central axial bore ( 10 ) in the lower piston head ( 5 ), which is controlled by a control valve ( 11 ) arranged on the underside ( 23 ) of the lower piston head ( 5 ); the control valve ( 11 ) comprises a control valve ball ( 19 ), upon which a control valve spring ( 20 ) acts in the opening direction and the lift of which is limited by a lift-limiting stop ( 24 ) of a valve ball cap ( 21 ), whereby an RSHVA, the idle lift of which is as independent as possible of the viscosity and hence of the temperature of the lubricating oil is to be created and is achieved in that temperature-sensitive means influencing the closing time of the control valve ( 11 ) are provided, which lead to a closing time of the control valve ( 11 ) that is largely independent of the lubricating oil temperature of the internal combustion engine.

公开(公告)号：CA2400897A1

公开(公告)日：2003-02-28

申请号：CA2400897

申请日：2002-08-29

Applicant: INA SCHAEFFLER KG

Inventor： FARIA CHRISTOF ,  SCHNELL OLIVER

IPC: F01L1/14 ,  F01L1/24 ,  F01L1/245 ,  F01L1/255 ,  F01L1/46 ,  F01L1/12

Abstract: In a valve train of an internal combustion engine, which valve train compris es an elongate anti-rotation bridge (6) comprising receptions spaced behind one another for receiving valve tappets configured as roller tappets (4), one of which tappets is arranged in each reception and is directed with a tappet roller (3) toward a cam (2) of a camshaft (1), the roller tappet (4) of the invention comprises on an outer peripheral surface, raised tappet contours (10, 11) that engage into retenti on grooves of the bridge (6) within the reception.

公开(公告)号：DE19750806A1

公开(公告)日：1999-05-27

申请号：DE19750806

申请日：1997-11-17

Applicant: SCHAEFFLER WAELZLAGER OHG

Inventor： BARTH WERNER DIPL ING

IPC: F01L1/24 ,  F01L1/255

Abstract: The equalizing device has a spring element (19) in a cavity (18) bounded by a setting piston, sliding shoe (7) and holding element (11). The spring-loads the sliding shoe along the longitudinal axis (16) of the setting piston towards the valve stem, so that in the overall position of the play equalizing element (3) in the non-built-in state, the sliding shoe has its flat surface (9) perpendicular to the longitudinal axis of the setting piston, preventing it from swinging out of position.

公开(公告)号：FR2578907B1

公开(公告)日：1989-06-16

申请号：FR8503709

申请日：1985-03-13

Applicant: PEUGEOT

Inventor： GALLOT JEAN-CLAUDE ,  LAUVIN PIERRE ,  LOMBARD ROGER

IPC: F01L1/255 ,  F01L1/26 ,  F02B1/04 ,  F02F1/24 ,  F02F1/42 ,  F01L1/46 ,  F01L1/24 ,  F01L1/44

Abstract: A device for actuating valves in an internal combustion engine comprise four valves (9, 10, 11, 12) inclined in a V configuration and a central spark plug (3) per cylinder (6), each cylinder (6) being associated with two pairs of valves (9, 10; 11, 12) inclined on each side of an axial plane (PP) of the cylinder (6), while a spark plug pit (4) is provided between the two valves (9, 10) of one of the pairs, roughly parallel to the latter, this device comprising a central camshaft (13) located in the vicinity of the axial plane (PP) and, for each cylinder (6), at least two rockers (14, 15). There is interposed between each rocker (14, 15) and the camshaft (13) a pushrod (21) parallel to the cylinder (6), and, for each cylinder, the pin (18) of the rocker(s) disposed on the same side as the pit (4) is carried, as the other pin (19), by two bearings (26) located on each side of the rockers (14, 15) and is disposed between the pit (4) and the axial plane (PP). This device is of small overall size and particularly reliable.

公开(公告)号：DE3660315D1

公开(公告)日：1988-07-21

申请号：DE3660315

申请日：1986-03-04

Applicant: PEUGEOT ,  CITROEN SA

Inventor： GALLOT JEAN-CLAUDE ,  LAUVIN PIERRE ,  LOMBARD ROGER

IPC: F01L1/255 ,  F01L1/26 ,  F02B1/04 ,  F02F1/24 ,  F02F1/42 ,  F01L1/12

Abstract: A device for actuating valves in an internal combustion engine comprise four valves (9, 10, 11, 12) inclined in a V configuration and a central spark plug (3) per cylinder (6), each cylinder (6) being associated with two pairs of valves (9, 10; 11, 12) inclined on each side of an axial plane (PP) of the cylinder (6), while a spark plug pit (4) is provided between the two valves (9, 10) of one of the pairs, roughly parallel to the latter, this device comprising a central camshaft (13) located in the vicinity of the axial plane (PP) and, for each cylinder (6), at least two rockers (14, 15). There is interposed between each rocker (14, 15) and the camshaft (13) a pushrod (21) parallel to the cylinder (6), and, for each cylinder, the pin (18) of the rocker(s) disposed on the same side as the pit (4) is carried, as the other pin (19), by two bearings (26) located on each side of the rockers (14, 15) and is disposed between the pit (4) and the axial plane (PP). This device is of small overall size and particularly reliable.

公开(公告)号：DE3269477D1

公开(公告)日：1986-04-03

申请号：DE3269477

申请日：1982-11-15

Applicant: NISSAN MOTOR

Inventor： HAYASHI YOSHIMASA

IPC: F01L1/18 ,  F01L1/16 ,  F01L1/24 ,  F01L1/255

Abstract: A valve train of an overhead camshaft engine is provided with a mechanism for taking up slack in the valve train. The slack take up mechanism is constituted by a tappet, an oil pressure chamber, a coil spring, etc. and constructed such that leakage of the oil pressure chamber takes place for take up adjustment during each cycle of valve operation.