Hydraulic system for a marine outboard engine

Details Hydraulic system for a marine outboard engine Hydraulic system for a marine outboard engine

2011-03-08

2011-03-08

Avila, Stephen (Department: 3617)

Marine propulsion

Means to control the supply of energy responsive to a sensed...

C440S06100B, C440S06100B, C440S087000

Reexamination Certificate

active

07901258

ABSTRACT:
A marine outboard engine has upper and lower engine covers, a swivel bracket, a stern bracket, an engine, a driveshaft, a gear case, a propeller shaft, and a variable pitch propeller. A hydraulic system includes hydraulic steering, trim, and propeller pitch actuators, and at least one valve having at least one inlet, and first, second, and third outlets. The first, second, and third outlets fluidly communicate with the hydraulic steering, trim, and propeller pitch actuators respectively. A pump fluidly communicates with the at least one inlet of the at least one valve. A reservoir stores hydraulic fluid. A control unit controls the at least one valve to control a flow of hydraulic fluid through each of the first, second, and third outlets based at least in part on a signal received from a pressure sensor. Methods of controlling the hydraulic systems are also disclosed.

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