(57) A piston accumulator (40) for damping two fluid systems is provided. The piston accumulator
(40) comprises a cylinder (42), a first port (44) for a fluid system to be damped,
which is disposed at one end of the cylinder (42), and a first piston (52), which
is contained in a sealed manner and slidably in the cylinder (42). Furthermore, the
piston accumulator (40) comprises a second port (46) for a second fluid system to
be damped, which is disposed at the other end of the cylinder (42), and a second piston
(54), which is contained in the cylinder (42) in a sealed manner and is slideable
between the first piston (52) and the second port (46). A first damping volume (60),
formed between the first (52) and the second piston (54), is or can be filled with
fluid, preferably gas. The accumulator further comprises a third piston (68), which
is contained in the cylinder (42) in a sealed manner and is slideable between the
second piston (54) and the second port (46), wherein a second damping volume (70),
formed between the second (54) and the third (68) piston, is or can be filled with
fluid.
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