摘要:
A torque limiter control sets the limit of power which may be absorbed by a pump. A feedback system adjusts the displacement of the pump in responses to changes in the pressure of working fluid at the pump outlet to maintain a set power.
摘要:
A variable-displacement, axial piston-type hydraulic fluid pump having a pump housing (12) is provided with co-operating pump rotational speed, thrust plate position, and working pressure operating-condition sensor assemblies (100) that are partially contained within the pump housing (12), that are partially contained within a separate position sensor housing (110) which is removably secured to the pump housing (12), and that are sealed against high-pressure fluid leakage using only static resilient fluid pressure seals (114).
摘要:
A variable-displacement, axial piston-type hydraulic fluid pump having a pump housing (12) is provided with co-operating pump rotational speed, thrust plate position, and working pressure operating-condition sensor assemblies (100) that are partially contained within the pump housing (12), that are partially contained within a separate position sensor housing (110) which is removably secured to the pump housing (12), and that are sealed against high-pressure fluid leakage using only static resilient fluid pressure seals (114).
摘要:
A rocker cam type, variable displacement, axial piston pump (10) where working pressure fluid supplied to a pump housing (12) is fed to a pair of counterbalance pockets (72, 74) formed in the rocker cam (38) through fluid passage (86, 88, 92, 96) located within the rocker cam (38).
摘要:
The hydraulic pump system is provided with a leakage fluid reclamation sub-system having connected eductor and fluid line elements (30, 40, 42, 46) that function to return hydraulic fluid leaked from around the system drive shaft (12) to the reservoir of the hydraulic fluid pump.
摘要:
The variable displacement axial piston pump (10) has a plurality of piston bores (32) each connected to an inwardly angled fill port (120). The fill ports (120) extend from the piston bores (32) inwardly to the working face of the barrel (22) to reduce the diameter of the fill circle of a pump. This decreases the velocity that must be attained by incoming fluid to thereby increase the operating speed at which the pump may be driven where the pump is filled at atmospheric pressure.