Motor boat steering

motor boat steering
motor boat steering
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Application domain
for motor boats


The hydraulic steering system basically consists of one or more hydraulic pumps and cylinders interconnected through hoses which transfer the oil pressure from the pumps into the cylinder thereby turning the rudder blade in wanted direction. Depending on requirements, a by-pass valve, dual non-return valve (if not already built into a pump) and pressure relief valve can be installed into the system. By-pass valve is used for a quick change-over from hydraulic to manual steering in case of need and on vessels where regulations prescribe it (and it is very practical for sailing boats). By opening by-pass valve the free flow of hydraulic oil is enabled from one to the other cylinder side and thereby smooth tiller steering. Pressure relief valve can be fitted to release excessive oil pressure to non-pressurized part of installation in case of some malfunction to prevent damages from potentially high pressure. Dual non-return valve can be installed in a steering system with one steering place if needed, and it must be installed in systems with two or more steering places (if pumps are without built-in non-return valve). Its function is to allow the oil flow, when hydraulic pump is activated, and to block the return pressure that appears in the cylinder due to the rudder blades resistance. In multiple steering positions systems this type of valve prevents the steering wheel, which is not being used, from unnecessary turning, and allows the automatic transfer of controls from one steering position to another. Hoses can be flexible or rigid (steel or copper) depending on the size of the vessel and steering gear as well as design requirements.


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