Valve drive device with switchover device
AssigneeMahle International GmbH
InventorsPatrick Altherr, Thorsten Ihne, Markus Lindgren
Life of this patent
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Abstract
A valve drive device for actuating valves of an internal combustion engine a rocker arm device and a switchover device that includes at least two actuators for the at least one rocker arm device. The two actuators respectively include a switching element adjustable between a first position and a second position; a resetting device for resetting the switching element with a resetting force into the second position; a holding coil for offsetting the resetting force of the resetting device; a switching coil that counteracts the resetting force during operation. The switching coil and the holding coil adjust the switching element into the first position.
Claims20
A valve drive device for actuating valves of an internal combustion engine, comprising:
- at least one rocker arm device that interacts with a camshaft, and during operation actuates at least one valve,
- a switchover device for switching over the at least one rocker arm device between a first position and a second position, the switchover device including at least two actuators for the at least one rocker arm device,
- wherein the at least two actuators each include:
- a switching element for switching over the at least one rocker arm device between the first position and the second position, the switching element being adjustable between a first position and a second position,
- a resetting device for resetting the switching element with a resetting force into the second position,
- a holding coil for offsetting the resetting force of the resetting device,
- a switching coil that counteracts the resetting force during operation, wherein the switching coil and the holding coil during operation adjust the switching element into the first position,
- wherein the switchover device further includes a control unit for controlling the at least two actuators, the control unit for the respective switching coil of the at least two actuators comprises an associated switching coil output for individually activating the respective switching coils, and
- wherein the control unit comprises a common main coil output for at least two of the respective holding coils for the joint activation of the respective holding coils.
A switchover device of a valve drive device, comprising:
- at least two actuators for at least one rocker arm device that is switchable between a first position and a second position,
- the at least two actuators respectively including:
- a switching element for switching over the at least one rocker arm device between the first position and the second position, the switching element being adjustable between a first position and a second position,
- a resetting device for resetting the switching element with a resetting force into the second position,
- a holding coil for offsetting the resetting force of the resetting device,
- a switching coil that counteracts the resetting force during operation, wherein the switching coil and the holding coil during operation adjust the switching element into the first position,
- a control unit for controlling the at least two actuators, the control unit including a switching coil output for the respective switching coils of the at least two actuators for individually activating the respective switching coils,
- wherein the control unit comprises a common holding coil output for the respective holding coils of the at least two actuators for the joint activation of the respective holding coils.
Dependencies are inferred from the claim text.