Impressed current cathodic protection system for marine engine
AssigneeYamaha Marine Kabushiki Kaisha
InventorsMasahiro Mizuno, Yuji Tateishi, Toshiyuki Mizushima
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Abstract
A cathodic protection system has electrodes disposed in a coolant passage of an engine filled with a conductive coolant. The electrodes are electrically insulated from the engine. A power supply device provides for a protective electric current to form from the electrodes to the engine through the coolant. The cathodic protection system reduces engine manufacturing and maintenance costs and provides an anticorrosive effect without increasing the size of the engine.
Claims20
An impressed current cathodic protection system for a marine engine having a coolant passage, the coolant passage being configured to receive a conductive coolant, the system comprising:
- a plurality of electrodes disposed in the coolant passage, each electrode being electrically insulated from the engine;
- and
- a power supply configured to provide a protective current between the plurality of electrodes and the engine via the conductive coolant.
A marine engine comprising:
- a coolant passage configured to receive a conductive coolant;
- a plurality of electrodes disposed in the coolant passage and electrically insulated from the engine;
- and
- a power supply configured to supply an electric potential between the plurality of electrodes and the engine.
Dependencies are inferred from the claim text.