Hydraulic Propulsion

Driving the properller shaft by means of a hydraulic motor in stead of using the conventional set up of an engine and gearbox, is preferable in many cases (see illustraion at the bottom of this page).

The VETUS system uses a hydraulic pump and motor with fixed swept volumes.The transmission ratios (reduction) in the propulsion system are achieved by the difference in volume between the vane
pump and the hydraulic motor.

HPH465

HPH465

Hydraulic propulsion
48 kW (65 hp)
HPM435

HPM435

Engine M4.35 hydraulic
24.3 kW (33 hp)
HPM445

HPM445

Engine M4.45 hydraulic
30.9 kW (42 hp)
HPM456

HPM456

Hydraulic propulsion
38 kW (52 hp)

All versions include

  • Hydraulic vane pump
  • Adapter flange and coupling to fit the pump to the relevant engine
  • Hydraulic vane motor
  • 35 litre hydraulic oil tank
  • Oil cooler
  • Control valve
  • Flexible engine mounts
  • Engine instrument panel and loom
VETUS propulsion system

How Hydraulic Propulsion Works

A hydraulic vane pump is fitted to the engine in place of the gearbox. This pump draws hydraulic fluid from a storage tank and delivers it under pressure to the speed and direction control valve. The control valve determines the direction and volume of hydraulic flow to the hydraulic vane motor, which can then rotate clockwise or counter clockwise as selected. This hydraulic motor drives the propeller shaft via a flexible coupling.

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United Kingdom.
SO45 6HE
TEL: 02380 846222