1. A method for operating a multi-unit vehicle (20) comprising at least one traction vehicle (1)
and at least one supplementary vehicle (10) coupled to the traction vehicle (1), in particular a
railcar, the supplementary vehicle (10) having at least one supplementary braking device (11)
for generating a supplementary braking force (Z), the method comprising:
actuating a first friction braking device (5) and applying a first holding braking force
(H1);
monitoring a kinematic state of at least one of the traction vehicle (1) and the
supplementary vehicle (10); and
if a first undesired kinematic state (103) is detected, actuating a traction device (3) such
that a counteracting traction force (T) is provided for braking and holding the multi-unit vehicle
(20) at a standstill.
2. The method as claimed in claim 1, wherein the multiunit vehicle (20) for holding the
multiunit vehicle (20) at a standstill is operated in a holding operation mode, and wherein
exclusively the first friction braking device (5) and the traction device (3) of the traction vehicle
(1) and/or no actuation of the supplementary braking device (11) of the supplementary vehicle
(10) for holding the multi-unit vehicle (20) at a standstill is affected.
3. The method as claimed in claims 1-2, wherein the kinematic state of the traction vehicle (1)
and/or the multi-unit vehicle (20) is determined at least by means of a first measured value
(M1), and wherein the first undesired kinematic state is present and the traction device (3) is
actuated if the first measured value (M1) exceeds a first threshold (G1).
4. The method as claimed in claims 1-3, wherein the kinematic state of the traction vehicle (1)
and/or the multi-unit vehicle (20) is determined at least by means of a second measured value
(M2), and wherein the second undesired kinematic state (105) is present when the second
measured value (M2) exceeds a second threshold (G2) and/or when the actuation of the traction
device (3) for braking and holding the multiunit vehicle (20) to a standstill is unsuccessful.
5. The method as claimed in claim 3 or 4, wherein the supplementary braking device (11) is
actuated, in particular automatically, in the presence of a third undesirable kinematic state
(106), if a third measured value (M3) exceeds a third threshold (G3), in particular for a specific
time period.
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6. A method for operating a traction vehicle (1) and/or a multi-unit vehicle (20), the method
comprising:
braking the traction vehicle (1) and/or the multi-unit vehicle (20) to a standstill,
activating a holding operation mode of the traction vehicle (1) and/or the multi-unit
vehicle (20), while specifying the holding operation mode is performed on an ascending or
descending underground, and
executing the method as claimed in one of the claims 1-5.
7. A multi-unit vehicle (20) with at least one traction vehicle (1) and at least one supplementary
vehicle (10), in particular a railcar, coupled to the traction vehicle (1), wherein the traction
vehicle (1) comprises a control unit (2), wherein the supplementary vehicle (10) has at least
one supplementary braking device (11) for generating a supplementary braking force (Z), and
wherein the control device (2), the traction vehicle (1) and/or the multiunit vehicle (20) is/are
configured for executing the method as claimed in one of the preceding claims 1-6.
8. The multiunit vehicle (20) as claimed in claim 7 with at least two traction vehicles (1) and
at least two auxiliary vehicles (10) coupled together with the traction vehicles (1), in particular
wherein the auxiliary vehicles (10) do not have a traction device (3).