Internal Combustion Engine Valve Train Device

Abstract

An internal combustion engine valve train device of a motor vehicle, includes at least one exhaust valve actuating unit and at least one intake valve actuating unit, and an operating mode switching unit that is provided for switching the exhaust valve actuating unit into an exhaust gas recirculation mode in order to adjust an internal exhaust gas recirculation. The operating mode switching unit is provided for also switching the intake valve actuating unit into an exhaust gas recirculation mode in order to adjust an internal exhaust gas recirculation.

1 - 11 . (canceled) 
     
     
         12 . An internal combustion engine valve train device of a motor vehicle, comprising:
 at least one exhaust valve actuating unit;   at least one intake valve actuating unit; and   an operating mode switching unit structurally configured to switch
 the exhaust valve actuating unit into an exhaust gas recirculation mode to adjust an internal exhaust gas recirculation, 
 the intake valve actuating unit into an exhaust gas recirculation mode in order to adjust an internal exhaust gas recirculation, 
   wherein the intake valve actuating unit has at least one intake cam which includes at least one first cam track for a normal mode and a second cam track for the exhaust gas recirculation mode.   
     
     
         13 . The internal combustion engine valve train device of  claim 12 , wherein the second cam track of the at least one intake cam differs from the at least one first cam track of the at least one intake cam by at least one valve actuation parameter. 
     
     
         14 . The internal combustion engine valve train device of  claim 12 , wherein the second cam track of the at least one intake cam is configured to set an intake valve opening phase at least essentially outside an exhaust valve opening phase. 
     
     
         15 . The internal combustion engine valve train device of  claim 12 , wherein the second cam track of the at least one intake cam provides a valve actuation parameter as a lift height that differs from a lift height of the first cam track of the at least one intake cam. 
     
     
         16 . The internal combustion engine valve train device of  claim 15 , wherein the lift height of the second cam track of the at least one intake cam is smaller than the lift height of the first cam track of the at least one intake cam. 
     
     
         17 . The internal combustion engine valve train device of  claim 12 , wherein the second cam track of the at least one intake cam provides a valve actuation parameter that is an opening duration and that differs from an opening duration of the first cam track of the at least one intake cam. 
     
     
         18 . The internal combustion engine valve train device of  claim 17 , wherein the opening duration of the second cam track of the at least one intake cam, is shorter than the opening duration of the first cam track of the at least one intake cam. 
     
     
         19 . The internal combustion engine valve train device of  claim 12 , wherein the exhaust valve actuating unit has at least one exhaust cam, with at least one cam track for the exhaust gas recirculation mode that provides at least two valve actuation parameters for a lift height that differ from a lift height of the second cam track of the at least one intake cam. 
     
     
         20 . The internal combustion engine valve train device of  claim 19 , wherein the lift height of the second cam track of the at least one intake cam is smaller than at least one of the two valve actuation parameters of the cam track of the at least one exhaust cam. 
     
     
         21 . The internal combustion engine valve train device of  claim 12 , wherein the operating mode switching unit has at least one switch gate configured to convert a rotary movement into an axial movement, at least for switching the exhaust gas recirculation mode.