Robert Boschgmbh

Milan Djurovic

Gerhard Keuper

Heinrich Loedige

Peter Stachnik

Heinrich LÖDIGE

A hydraulic control system for controlling at least two consumers () includes a pump () with an adjustable delivery quantity. The consumers are each associated with an adjustable metering orifice (), having a power beyond connection () to which at least one power beyond consumer () is connectable. An inlet pressure governor unit () is connected downstream of the pump () and opens a connection to a tank (T). Its setting occurs as a function of a load pressure of the consumers () or of the at least one power beyond consumer (). The inlet pressure governor () is provided in the pressure fluid flow path between the pump () and one of the two consumers (), while the power beyond connection () branches off from the pressure fluid path between the pump () and the inlet pressure governor ().

Hydraulic control system

A hydraulic control system for controlling preferably at least two consumers, has a pump supplying the consumers with a pressure medium and having an adjustable pump capacity, an adjustable metering orifice assigned to each of the consumers, a power-beyond connection to which at least one power-beyond consumer is attachable, an inlet pressure scale connected downstream of the pump and provided in a pressure medium flow path between the pump and at least one of the two consumers, wherein the power-beyond connection branches off in the pressure medium flow path between the pump and the inlet pressure scale, a spring with a force acting upon the inlet pressure scale in a closing direction, an inlet having a pressure acting upon the inlet pressure scale in an opening direction, wherein the inlet pressure scale is configured so that it is actable upon in the closing direction selectively by either a highest load pressure or by a pressure that is greater than the highest load pressure.

A hydraulic control system for controlling preferably at least two consumers, has a pump with an adjustable delivery quantity supplying pressure fluid, an adjustable metering orifice with which the consumers are each associatable, a power beyond connection to which at least one power beyond consumer is connectable, an inlet pressure governor unit situated downstream of the pump and acted on in a closing direction by a load pressure of the consumers or of the at least one power beyond consumer, the inlet pressure governor unit being provided in a pressure fluid flow path between the pump and at least one of the two consumers, while the power beyond connection branching off from a pressure fluid flow path between the pump and the inlet pressure governor unit, a tank, the inlet pressure governor unit in a spring-prestressed position closing a connection to the at least one of the two consumers and the tank, and in another position a pressure fluid connection to the tank is opened, the inlet pressure governor unit being movable into an additional position in which a throttled connection to the tank is opened.

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Stuttgart, Germany

Milan Djurovic