Hybrid hydraulic system, and work machine that uses the hybrid hydraulic system

摘要

Work machine hydraulic system (12) and (10) is provided, the hydraulic system (12), the second port of a first port connected by (30) the first fluid passageway (26) and (28) including (22, 24) one hydraulic cylinder having at least. Which is disposed the first fluid passageway (30), the second and is placed in parallel with (14) pumps the first pump and the second (16) first pump is a two-way hydraulic pump (14) is disposed fluid passage (40). (18) is fluidly connected second fluid passageway (40) accumulator.