Zahnradfabrik Friedrichshafen, Ag.

Zf Friedrichshafen Ag

Gerhard Maurer

Thomas Voss

Josef Schwarz

Raimund Auer

Manfred Braig

Christoph Goebel

Gunter Roth

Fritz Geiger

Siegfried Krauss

Christoph Gobel

Peter Brinck

Control system for operating the drive assembly of a ship

The invention concerns a control system for operating a ship's motive installation (1, 2). Via a gearing (4) having adjustable clutches (67, 69) for forward and astern movement, an engine (3) drives a propeller shaft (7). Control and sensor devices (53, 54) are provided. With them the engine speed and the degree of slip of the clutches can be altered. With a control lever (13, 14) of a control post (9) a propeller shaft speed can be adjusted. A control electronics (21) defines the momentary operational condition by freely selecting from three possible operation conditions. The respective operation condition is defined depending on operational parameters to be observed of the engine (3) and/or the gearing (4). The control system is particularly adequate for use within a ship's multi-engine motive installations.

Control system for operating a ship's motive installation

A transmission is disclosed for use in ship drive arrangements. The transmission comprises a gear train having three main axes inclined and in parallel with respect to each other. The gear wheels of the gear train are selectively coupled to the main axes to transfer motive power from the input side of the transmission to the output side. The system affords space saving arrangements depending on the type of motor that is employed for the drive assembly.

Ship transmission

A dual hydraulic clutch with two operating positions and an intermediate neutral position receives pressure fluid through a three-position selector valve communicating with a pair of piston cylinders which are alternately under high and low fluid pressure in operation and are both under low pressure in neutral. Shifting the control valve partly unloads one of the cylinders into a throttled discharge line with generation of a pressure drop therein to actuate a bypass valve for instantly lowering the pressure in a supply line; the disappearance of this pressure drop upon termination of shifting gradually recloses the bypass valve for progressively raising the supply pressure to its operating level.

Control system for hydraulic coupling

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Friedrichshafen, Germany

Gerhard Maurer