Hydraulic apparatus used for operating vehicles

Patent · Tue Jul 15 04:00:00 EDT 1986

OSTI ID:5503784

Araki, H; Matsunaga, C

A hydraulic apparatus is described used for a vehicle having a propulsion engine of the type comprising a control valve having a valve body provided with a fluid inlet and containing a plunger, the plunger being provided with a pair of orifices only of which opens on one side exclusively at a time or vice versa in accordance with a shifting direction of the plunger and the degrees of the opening being variable in accordance with a shift amount of the plunger, valve means provided with a pressure compensation spool biased by a spring and operatively connected to the control valve to maintain a constant pressure drop across the variable orifices, at least two pumps driven by the engine for delivering fluid, a steering circuit operatively connected to the first spool to receive returned excess oil therefrom.

• Assignee: Toshiba Kikai Kabushiki Kaisha, Tokyo
• Patent Number(s): US 4599856
• OSTI ID: 5503784
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
CONTROL
CONTROL EQUIPMENT
ENGINES
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
HYDRAULIC EQUIPMENT
LUBRICANTS
LUBRICATING OILS
MACHINE PARTS
MECHANICAL TRANSMISSIONS
OILS
OPENINGS
ORGANIC COMPOUNDS
ORIFICES
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PRESSURE CONTROL
PRESSURE DROP
PUMPS
VALVES
VEHICLES