Abstract: A theft deterrent apparatus in a marine vessel including a propulsion device having an engine coupled to a starter and a power generator, includes an authentication unit arranged to operate by receiving power from a battery that is arranged to supply power to the starter and accumulate power generated by the power generator, an operation control unit arranged to allow operation of the propulsion device if authentication by the authentication unit does succeed and prohibit operation of the propulsion device if authentication by the authentication unit does not succeed, a fault detection unit arranged to detect a fault of the authentication unit, and a fault detection control unit arranged to make a provisional fault judgment when the fault detection unit detects the fault of the authentication unit before completion of engine starting by the starter, and then make the fault detection unit perform the fault detection again after the completion of engine starting by the starter.

Abstract: A theft deterrent apparatus is used in a marine vessel which includes a propulsion device. The theft deterrent apparatus includes an authentication unit, a fault detection unit arranged to detect a fault of the authentication unit, and an operation control unit arranged to control operation of the propulsion device. When the authentication unit is normal, the operation control unit controls the operation of the propulsion device in accordance with an authentication result of the authentication unit. When a fault has occurred in the authentication unit, the operation control unit controls the operation of the propulsion device without referring to the authentication result of the authentication unit.

Abstract: A marine vessel power supply system supplies power to a plurality of propulsion devices each provided with an engine. The system includes a plurality of switching units arranged to turn on and off power supplies to the propulsion devices individually, an operation judgment unit arranged to judge whether the engine of each propulsion device is in an operating state or in a stopped state, and a power supply control unit arranged to turn off a switching unit of the plurality of switching units, when a switching unit is in the ON state and if the engine of the propulsion device corresponding to the switching unit is in a stopped state for not less than a predetermined time.

Abstract: In a fuel supply amount control system, during a period of engine startup from the time when a crankshaft starts to rotate by a starter motor to the time when the crankshaft stably rotates by fuel combustion, a fuel supply amount is controlled independently before and after a cylinder stroke determination. This enables determination of the fuel supply amount independently before and after the cylinder stroke determination. Accordingly, the required fuel amounts are provided respectively before and after the cylinder stroke determination. As a result, even if the required fuel amounts are different before and after the cylinder stroke determination, engine startup can be achieved in a short time.

Abstract: In engine temperature display device for a watercraft, an engine temperature data value is calculated based on a detection signal of a temperature of an engine of an outboard motor. The engine temperature data value is sent to an engine state display device installed in a watercraft by a LAN. A control portion of the engine state display device computes the engine temperature data value based on a plurality of threshold temperatures of a standard engine model stored in a nonvolatile memory, and converts the data value into a display data for indicating a temperature level among a plurality of temperature levels. The display data is displayed on a display device on the watercraft. An engine temperature data value calculating and sending device computes using a plurality of threshold values on an engine block wall temperature specific to an engine, and sends the appropriately converted engine temperature data value.

Abstract: In a fuel supply amount control system, during a period of engine startup from the time when a crankshaft starts to rotate by a starter motor to the time when the crankshaft stably rotates by fuel combustion, a fuel supply amount is controlled independently before and after a cylinder stroke determination. This enables determination of the fuel supply amount independently before and after the cylinder stroke determination. Accordingly, the required fuel amounts are provided respectively before and after the cylinder stroke determination. As a result, even if the required fuel amounts are different before and after the cylinder stroke determination, engine startup can be achieved in a short time.

Abstract: The present invention is an emulsified composition comprising (a) 0.01-5 wt % polysiloxane-polyoxyalkylene copolymer, (b) 0.05-1 wt % nonionic surfactant, (c) 10-30 wt % humectant, and (d) 1-50 wt % urea. The present invention provides an emulsified formulation of a urea-containing emulsified composition that has a superior emulsifying ability even with a lowered blend ratio of the surfactant, suppresses tingling due to urea, and is good feeling of use without stickiness even with a high blend ratio of the humectant.

Abstract: The present invention is an emulsified composition comprising (a) 0.01-5 wt % polysiloxane-polyoxyalkylene copolymer, (b) 0.05-1 wt % nonionic surfactant, (c) 10-30 wt % humectant, and (d) 1-50 wt % urea. The present invention provides an emulsified formulation of a urea-containing emulsified composition that has a superior emulsifying ability even with a lowered blend ratio of the surfactant, suppresses tingling due to urea, and is good feeling of use without stickiness even with a high blend ratio of the humectant.