| 摘要 |
The invention relates to a variably adjustable mechanical valve gear for at least one gas-reversing valve ( 1 ) provided with a closing spring ( 2 ) on a piston-type internal combustion engine having a drive mechanism ( 13 ) for generating a lifting movement that is effective counter to the force of the closing spring ( 2 ) on the gas-reversing valve ( 1 ) and with a stroke transfer means ( 4 ) in the form of a pivoting element ( 8 ), arranged between the driving mechanism ( 13 ) and the gas-reversing valve ( 1 ), which acts upon the gas-reversing valve ( 1 ) in the direction of its movement axis ( 14 ) and for which the lifting distance in the direction of the movement axis ( 14 ) can be changed via an adjustable guide element ( 11 ), wherein the pivoting element is connected to the gas-reversing valve with its end that is effective in the direction of the movement axis ( 14 ) and to the driving mechanism ( 13 ) with its end opposite the gas-reversing valve ( 1 ) and is guided to pivot back and forth on the guide element ( 11 ) designed as control curve ( 11.1 ).
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