Patent application number | Description | Published |
20100101517 | VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - A valve drive of an internal combustion engine, which has a reciprocating poppet valve and a spring element which impinges the closed reciprocating poppet valve with force against the action of a valve seat. The force characteristics are substantially independent of the lift characteristics of the reciprocating poppet valve. The spring element is part of a snap-in locking device, which is stationarily mounted in the engine and surrounds the valve stem of the reciprocating poppet valve. The snap-in locking device has snap-in elements arranged in the power flux between the spring element and reciprocating poppet valve. The snap-in elements are supported in the direction of closure of the reciprocating poppet valve on a snap-in surface of the valve stem when the reciprocating poppet valve is closed and on a snap-in surface of the snap-in locking device when the reciprocating poppet valve is open. | 04-29-2010 |
20100224154 | VALVE-TRAIN ASSEMBLY OF AN INTERNAL COMBUSTION ENGINE - A valve-train assembly of an internal combustion engine is provided with a camshaft ( | 09-09-2010 |
20100251982 | VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - A valve drive ( | 10-07-2010 |
20110247577 | VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - A valve drive of an internal combustion engine is provided, having a camshaft ( | 10-13-2011 |
20120006292 | VALVE DRIVE OF AN INTERNAL COMBUSTION ENGINE - A valve drive of an internal combustion engine with variable-lift gas exchange valve actuation. The valve drive has a camshaft with a support shaft and a cam piece arranged on the support shaft for conjoint rotation therewith and to be movable between axial positions. The cam piece has two cam groups of directly adjacent cams with different elevations and, on the end side, the cam piece has an axial slotted guide into which can be coupled an actuating element. The cam piece has a bearing journal which runs between the cam groups and rotatably mounted in a camshaft bearing point arranged in a positionally fixed manner in the engine. Here, the diameter of the bearing journal is larger than the envelope circle diameter of a cam closest to the bearing journal with the cam and camshaft bearing point overlapping axially in an axial position of the cam piece. | 01-12-2012 |
20120235777 | ELECTROMAGNETIC ACTUATING DEVICE - An electromagnetic actuating device ( | 09-20-2012 |
20130118427 | ACTUATOR DEVICE FOR THE ADJUSTMENT OF A SLIDING CAM SYSTEM WITH SWITCHING DISK - Actuator device of a sliding cam system with at least one sliding cam and with at least one actuator pin ( | 05-16-2013 |
20130293035 | ACTUATOR UNIT OF A SLIDING CAM SYSTEM HAVING A LATCHING DEVICE - An actuator unit of a sliding cam system includes an actuator pin for moving sliding cam units into different axial positions using at least one sliding groove on the circumference of the sliding cam units, which interacts with the actuator pin and which has at least one ejection ramp, the sliding cam system including an electromagnet unit, the actuator pins being loaded in the direction of the sliding cam unit by actuating springs, slidingly guided in a housing, the actuator pins being operatively connected to latching elements are guided in a shifting gate, spring-loaded and actuatable by the electromagnet unit, a return-stroke spring of the shifting gate being supported on the housing and loading the shifting gate in the insertion direction of the actuator pins, and the force of the return stroke spring is greater than the force of the actuating spring or springs. | 11-07-2013 |