Hydraulic drive system

Abstract

A hydraulic drive system 24, in particular for a self-propelled construction machine, comprises at least one hydraulic pump (28) drivable by a drive unit (26) for conveying hydraulic fluid, a hydraulic circuit (30) receiving hydraulic fluid conveyed by the at least one hydraulic pump (28) and returning hydraulic fluid to the at least one hydraulic pump, at least one hydraulic motor (32, 34) supplied via the hydraulic circuit (30) with hydraulic fluid conveyed by the at least one hydraulic pump (28), a discharge line arrangement (52) for discharging hydraulic fluid from the hydraulic circuit (30) to a hydraulic fluid reservoir (42), at least one flushing line (64) supplied from the hydraulic circuit (30) for flushing at least one hydraulic component of the hydraulic drive system (40) with hydraulic fluid, wherein at least one flushing line (64) branches off from the discharge line arrangement (52) and/or forms a line region of the discharge line arrangement (52).

Dependencies are inferred from the claim text.