In the case of the accumulator supplies the size of the hydraulic accumulator is determined using the pressure oil requirements of all consumers dependent on the accumulator during a working cycle and is determined by the size of the flow rate of the pump (= usable volume V N).
To assess the flow requirements per working cycle, it is practical to create an accumulator consumption diagram (Figure S 69). The pump must be selected with a certain size in order to replace the removed usable volume before the end of the working cycle:
![19feed1346b91c47fa7e3e71b1ae1d8d6fd497f6 speicherverbrauchsdiagramm_01.gif](/fileadmin/smc/files/19feed1346b91c47fa7e3e71b1ae1d8d6fd497f6.gif)
The factor k (approx. 1.25) serves to relieve the burden on the pump during part of the working cycle.
![4db7e5275f9d1bece31786f8f7d1ea9e832977be 0001_speicherverbrauchsdiagramm](/fileadmin/smc/files/4db7e5275f9d1bece31786f8f7d1ea9e832977be.gif)
Figure S 69: Accumulator consumption diagram