GAS INJECTION VALVE FOR INJECTING A COMBUSTIBLE GAS INTO AN INTERNAL COMBUSTION ENGINE, INTERNAL COMBUSTION ENGINE HAVING SUCH A GAS INJECTION VALVE, AND METHOD FOR OPERATING SUCH AN INTERNAL COMBUSTION ENGINE
A gas injection valve for injecting a combustible gas into an internal combustion engine, comprising a valve element, which can be moved between closed position and an open position, the open position being defined by a maximum stroke of the valve element. The maximum stroke of the valve element can be adjusted during operation of the gas injection valve.
1 - 10 . (canceled)
11 . A gas injection valve for injecting a combustion gas into an internal combustion engine, comprising:
a valve member displaceable between a closed position and an open position defined by a maximum stroke of the valve member,
wherein the maximum stroke of the valve member is adjustable during operation of the gas injection valve.
12 . The gas injection valve according to claim 11 , further comprising a housing and a first stop, against which the valve member, in the open position, butts, wherein the first stop defines the maximum stroke, and wherein the first stop is displaceable, viewed in a stroke direction of the valve member, relative to the housing.
13 . The gas injection valve according to claim 12 , further comprising a stop member, wherein the first stop is disposed on the stop member, wherein the stop member is displaceable between a second stop, arranged in a spatially fixed manner relative to the housing, and a third stop, arranged in a spatially fixed manner relative to the housing, wherein the second stop defines a minimum position for the first stop, and the third stop defines a maximum position for the first stop.
14 . The gas injection valve according to claim 13 , further comprising a first displacement mechanism for displacement of the valve member between the closed position and the open position, and a second displacement mechanism for displacement of the first stop.
15 . The gas injection valve according to claim 14 , wherein the second displacement mechanism includes an actuatable rotary drive that cooperates with a thread for adjustment of the first stop.
16 . The gas injection valve according to claim 15 , further comprising an adjusting element that is displaceable jointly with the stop member and has a first thread that meshes with a second thread arranged in a spatially fixed manner relative to the housing, wherein the rotary drive is configured and arranged to rotationally drive the adjusting element.
17 . An internal combustion engine, comprising a gas injection valve according to claim 11 .
18 . A method for operating an internal combustion engine having a gas injection valve according to claim 11 , comprising the steps of:
setting a combustion gas quantity to be injected on an operating-point-dependent basis by adjusting a maximum stroke of a valve member of the gas injection valve; and,
choosing actuation times for the gas injection valve on an operating-point-dependent basis for an optimized mixture formation in at least one combustion chamber of the Internal combustion engine.
19 . The method according to claim 18 , including setting a constant combustion gas pressure, upstream of the gas injection valve, in a combustion gas supply line of the internal combustion engine.
20 . The method according to claim 18 , including operating the internal combustion engine with a plurality of combustion chambers, and assigning a gas injection valve to each combustion chamber or to each combustion chamber assembly of a plurality of combustion chamber assemblies of the internal combustion engine, wherein
actuation times and/or
maximum stroke
is/are set separately for each gas injection valve.