Mannesmann Rexroth Corporation

Hydraulik-ring Gmbh

Manfred Unger

Egon Eisenbacher

Johann Schneider

Franz Pawellek

Frank Pawellek

Burkhard Willig

A radial-piston pump has at least one delivery unit with a delivery element. A pump casing is provided which has a first accommodation space for a medium to be delivered and a second accommodation space for a lubricant, the pump casing further has an eccentric side and a casing side. A separating device separates the first accommodation space and the second accommodation space from one another. The separating device has a first sealing element disposed fluid-tightly on the casing side of the pump casing and a second sealing element disposed on the eccentric side and connected fluid-tightly with the first sealing element. A shaft bearing configuration is disposed in the pump casing and supports an input shaft having an end portion. An eccentric element is disposed on the end portion of the input shaft. The second sealing element is disposed so as to be capable of sliding in a circumferential direction of the eccentric element. In this manner, a rotary motion of the input shaft is converted by the eccentric element into a radial motion of the delivery element of the delivery unit.

Radial piston pump

An injection system for an internal combustion engine having a plurality of cylinders is known which has a hydraulic pump with a delivery outlet to which a delivery line common to the cylinders is connected, and a plurality of injection units each of which is associated with a different cylinder and, in normal drive operation, can be controlled pulsewise by connection with the delivery line. There is also known an exhaust-brake system having a plurality of decompression valves each of which is associated with a different cylinder and, in brake operation, can be controlled pulsewise outside the exhaust stroke, in particular at the end of the compression stroke, by alternate pressure action on and pressure relief of the hydraulic actuating element. The purpose is to create a system with which, at little expense and at favorable cost, the 'injection' and 'exhaust-brake' functions can be satisfied. This is achieved by a plurality of valve arrangements, each of which is associated with a different cylinder and in normal drive operation connects the injection unit and the in brake operation the hydraulic actuating element on the corresponding cylinder, with proper timing, to the delivery line.

Injection and exhaust-brake system for an internal combustion engine

Engine brake for a multi-cylinder internal combustion engine

Hydraulic system, in particular an engine brake for an internal

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Kleinostheim, Germany

Manfred Unger