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AssigneeZF Friedrichshafen AG
InventorsJohannes Kaltenbach, Matthias Reisch, Ulrich Kehr, Michael Preuβ, Kai Bornträger
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A drive-train for a vehicle with at least one electric drive, which can be coupled via a driveshaft (2) to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2). At least one shifting mechanism is provided for engaging the transmission ratio stages (i1, i2). To carry out powershifts, the shifting mechanism includes at least one interlocking shifting element (5) and at least one frictional shifting element (6, 6A). Each of the transmission ratio stages (i1, i2) can be engaged by the interlocking shifting element (5) and at least one of the transmission ratio stages (i2) can be engaged both by the interlocking shifting element (5) and by the frictional shifting element (6). Methods for carrying out a powershift, between a frictional shifting element (6, 6A) and an interlocking shifting element (5) in the drive-train, are also disclosed.
A drive-train for a vehicle, with at least one electric drive (EM), which is couplable, via a driveshaft, to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2),
A method of carrying out a powershift between a frictional shifting element (6, 6A) and an interlocking shifting element (5) in a drive-train with at least one electric drive (EM), which is couplable, via a driveshaft, to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2), at least one shifting mechanism for engaging the first and the second transmission ratio stages (i1, i2), the shifting mechanism comprises at least one of the interlocking shifting element (5) and at least one of the frictional shifting element (6, 6A), each of the first and the second transmission ratio stages (i1, i2) is engagable by the interlocking shifting element (5) and at least one of the first and the second transmission ratio stages (i2) is engagable by both of the interlocking shifting element (5) and the frictional shifting element (6), the first and the second transmission ratio stages (i1, i2) are realized by a planetary gearset, a sun gear (12) of the planetary gearset (11) is connected to the driveshaft (2), a planetary carrier (13) is connectable, by the frictional shifting element (6), to the driveshaft (2), and a ring gear (15) of the planetary gearset (11) is connectable, by the interlocking shifting element (5), to either the driveshaft (2) or a housing (16), the method comprising:
A method of carrying out a powershift between a frictional shifting element (6, 6A) and an interlocking shifting element (5) in a drive-train for a vehicle, with at least one electric drive (EM), which is couplable, via a driveshaft, to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2), at least one shifting mechanism for engaging the first and the second transmission ratio stages (i1, i2), the at least one shifting mechanism comprises the interlocking shifting element (5) and the frictional shifting element (6, 6A) for carrying out powershifts, each of the first and the second transmission ratio stages (i1, i2) is engagable by the interlocking shifting element (5) and at least one of the first and the second transmission ratio stages (i2) is engagable by both of the interlocking shifting element (5) and the frictional shifting element (6), the first and the second transmission ratio stages (i1, i2) are realized by a planetary gearset, a sun gear (12) of the planetary gearset (11) is connected to the driveshaft (2), a planetary carrier (13) is connectable, by the frictional shifting element (6), to the driveshaft (2), and a ring gear (15) of the planetary gearset (11) is connectable, by the interlocking shifting element (5), to either the driveshaft (2) or a housing (16), the method comprising:
A method of carrying out a powershift between a frictional shifting element (6, 6A) and an interlocking shifting element (5) in a drive-train for a vehicle, with at least one electric drive (EM), which is couplable via a driveshaft to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2), at least one shifting mechanism for engaging the first and the second transmission ratio stages (i1, i2), the at least one shifting mechanism comprises the interlocking shifting element (5) and the frictional shifting element (6, 6A) for carrying out powershifts, each of the first and the second transmission ratio stages (i1, i2) is engagable by the interlocking shifting element (5) and at least one of the first and the second transmission ratio stages (i2) is engagable by both of the interlocking shifting element (5) and the frictional shifting element (6), the first and the second transmission ratio stages (i1, i2) are realized by a planetary gearset, a sun ear (12) of the planetary gearset (11) is connected to the driveshaft (2), a planetary carrier (13) is connectable, by the frictional shifting element (6), the driveshaft (2), and a ring gear (15) of the planetary gearset (11) is connectable, by the interlocking shifting element (5), to either the driveshaft (2) or a housing (16) the method comprising:
Dependencies are inferred from the claim text.