Patent ID: 6263839
Filing Date: 2001-07-24
Classification: F01P,F02B

Abstract:
An outboard motor comprising a propulsion unit, an internal combustion engine arranged to power said propulsion unit, a water cooling system arranged to introduce cooling water into said engine from the body of water surrounding said propulsion unit and to discharge the cooling water to the body of water, said cooling system being further arranged to drain the cooling water outside of said outboard motor when said engine does not operate, said cooling system including at least one water passage extending through, at least in part, said engine, said water passage having an outlet port from which the cooling water is discharged, a sensor arranged to sense a temperature associated with said water passage to output a temperature signal when a sensed temperature exceeds a predetermined temperature, said sensor being positioned generally close to said outlet port, and a controller configured to determine an overheat condition of said engine based upon the temperature signal from said sensor.