Abstract: There are provided: a first communication device; a second communication device that communicates wirelessly with the first communication device; and a state detector that outputs state data indicating a state of a predetermined installation place. The first communication device includes: a storage; and a data controller that selectively executes a transmitting operation to transmit the state data to the second communication device and a storing operation to store the state data in the storage. The second communication device includes a signal generator that generates a stop notification signal notifying that the second communication device in operation stops an operation, and stops the operation after transmitting the stop notification signal to the first communication device.

Abstract: There are provided: a first communication device; a second communication device that communicates wirelessly with the first communication device; and a state detector that outputs state data indicating a state of a predetermined installation place. The first communication device includes: a storage; and a data controller that selectively executes a transmitting operation to transmit the state data to the second communication device and a storing operation to store the state data in the storage. The second communication device includes a signal generator that generates a stop notification signal notifying that the second communication device in operation stops an operation, and stops the operation after transmitting the stop notification signal to the first communication device.

Abstract: There is provided a lubricating structure for an outboard motor, which can secure a sufficiently large cross-sectional area for a main oil gallery while preventing an increase in the width of an engine thereof. A water-cooled four-cycle six-cylinder V-type engine having a generally vertically disposed crankshaft is mounted on an engine holder. A cylinder block is disposed at the rear of a crankcase disposed in the foremost end (i.e. on the bow side) of the engine, and a main oil gallery extends vertically in the starboard-side side part of the cylinder block. Namely, the main oil gallery is disposed not in a central part of the cylinder block in the transverse direction thereof, but at a location outward of cylinder bores of the cylinder block.

Abstract: An exhaust structure for use in an outboard engine of a vertical-type four-cycle V-type having cylinder heads, a crankcase, cylinder blocks constituting left and right sides of an integral body disposed in a V shape as seen in a plan view and forming a V-bank therebetween, an intake system disposed in the V bank, exhaust systems disposed on the left and right sides outside the V-bank, and a crankshaft disposed substantially vertically to the surface formed where the crankcase and cylinder blocks join one another, wherein the engine is disposed above an engine support attached to the hull and an oil pan is disposed beneath the engine support. The exhaust systems join and become integral inside the engine support and then pass through the interior of the oil pan to discharge exhaust gases. The invention provides an outboard engine exhaust structure having a non-complex oil pan of sufficient capacity.

Abstract: A lubricating system for an outboard motor equipped with a vertical type engine. In one embodiment, the lubricating system has an oil pump positioned near the bottom of the engine, the oil pump driven by an oil pump rotor that is positioned at a connection between the crankshaft and an engine drive-shaft, the oil pump rotor being linked to the crankshaft. The system further includes a camshaft-driving mechanism for transmitting the rotation of the crankshaft to a propulsion device. The camshaft-driving mechanism is also positioned at the connection between the crankshaft and the drive-shaft and is also linked to the crankshaft. The lubrication system also has a main oil tank for storing lubricating oil circulated by the oil pump, and an engine-cooling water passageway positioned next to the main oil tank. Another element of this embodiment of the lubricating system is a filter-mounting base positioned on an outer wall of the cylinder blocks.

Abstract: There is provided a lubricating structure for an outboard motor, which can secure a sufficiently large cross-sectional area for a main oil gallery while preventing an increase in the width of an engine thereof. A water-cooled four-cycle six-cylinder V-type engine having a generally vertically disposed crankshaft is mounted on an engine holder. A cylinder block is disposed at the rear of a crankcase disposed in the foremost end (i.e. on the bow side) of the engine, and a main oil gallery extends vertically in the starboard-side side part of the cylinder block. Namely, the main oil gallery is disposed not in a central part of the cylinder block in the transverse direction thereof, but at a location outward of cylinder bores of the cylinder block.

Abstract: An intake system of an outboard motor including a vertically arranged V-type engine comprises, an intake manifold connected to the intake ports, a surge tank connected to the intake manifold and disposed at a rear side from a central portion of the engine, a throttle body provided with a throttle valve, a plurality of intake passages for high revolution operation of the engine. The intake passages for high revolution operation extend from the surge tank and are communicated with the intake manifold, and the intake passages for low/intermediate revolution operation extend from the surge tank and are joined with the intake passages for high revolution operation, respectively. Each of the intake passages for low/intermediate revolution operation has a length longer than that for high revolution operation. A valve open/close mechanism is also disposed for opening/closing all at once portions upstream side of the joined portions of both the intake passages of the engine.

Abstract: An air intake cooling system for an outboard motor equipped with a V-type engine. In one embodiment, the air intake cooling system has an air intake manifold and a water-cooling passageway positioned in the air intake manifold for cooling air in the air intake manifold. The system further has a water sleeve for cooling a main oil reservoir located inside the V-type engine, the water sleeve positioned next to the main oil reservoir and connected to the water-cooling passageway. The system uses water in the water-cooling passageway for cooling the air intake manifold and in the water sleeve for cooling a lubricating oil in the main oil reservoir, the water used to cool the intake manifold being the same as the water in the water sleeve.

Abstract: A four-stroke-cycle engine of an outboard motor, comprises an engine body, a crankshaft, at least one camshaft, at least one camshaft driving mechanism, an oil pump, at least one valve timing adjusting mechanism and at least one valve timing controlling mechanism. The crankshaft and the camshaft are disposed in an upright state in the engine body. The camshaft driving mechanism transmits a rotational motion of the crankshaft to the camshaft. The camshaft driving mechanism is disposed on a lower side of an engine body. The oil pump for lubrication is disposed on the lower side of the engine body. Oil is supplied from the oil pump to the valve timing controlling mechanism to control the valve timing adjusting mechanism. The valve timing controlling mechanism is disposed on a lower side of an outer wall of a valve train chamber in which the camshaft is received.

Abstract: An air intake cooling system for an outboard motor equipped with a V-type engine. In one embodiment, the air intake cooling system has an air intake manifold and a water-cooling passageway positioned in the air intake manifold for cooling air in the air intake manifold. The system further has a water sleeve for cooling a main oil reservoir located inside the V-type engine, the water sleeve positioned next to the main oil reservoir and connected to the water-cooling passageway. The system uses water in the water-cooling passageway for cooling the air intake manifold and in the water sleeve for cooling a lubricating oil in the main oil reservoir, the water used to cool the intake manifold being the same as the water in the water sleeve.

Abstract: A lubricating system for an outboard motor equipped with a vertical type engine. In one embodiment, the lubricating system has an oil pump positioned near the bottom of the engine, the oil pump driven by an oil pump rotor that is positioned at a connection between the crankshaft and an engine drive-shaft, the oil pump rotor being linked to the crankshaft. The system further includes a camshaft-driving mechanism for transmitting the rotation of the crankshaft to a propulsion device. The camshaft-driving mechanism is also positioned at the connection between the crankshaft and the drive-shaft and is also linked to the crankshaft. The lubrication system also has a main oil tank for storing lubricating oil circulated by the oil pump, and an engine-cooling water passageway positioned next to the main oil tank. Another element of this embodiment of the lubricating system is a filter-mounting base positioned on an outer wall of the cylinder blocks.

Abstract: An exhaust structure for use in an outboard engine of a vertical-type four-cycle V-type having cylinder heads, a crankcase, cylinder blocks constituting left and right sides of an integral body disposed in a V shape as seen in a plan view and forming a V-bank therebetween, an intake system disposed in the V bank, exhaust systems disposed on the left and right sides outside the V-bank, and a crankshaft disposed substantially vertically to the surface formed where the crankcase and cylinder blocks join one another, wherein the engine is disposed above an engine support attached to the hull and an oil pan is disposed beneath the engine support. The exhaust systems join and become integral inside the engine support and then pass through the interior of the oil pan to discharge exhaust gases. The invention provides an outboard engine exhaust structure having a non-complex oil pan of sufficient capacity.

Abstract: A four-stroke-cycle engine of an outboard motor, comprises an engine body, a crankshaft, at least one camshaft, at least one camshaft driving mechanism, an oil pump, at least one valve timing adjusting mechanism and at least one valve timing controlling mechanism. The crankshaft and the camshaft are disposed in an upright state in the engine body. The camshaft driving mechanism transmits a rotational motion of the crankshaft to the camshaft. The camshaft driving mechanism is disposed on a lower side of an engine body. The oil pump for lubrication is disposed on the lower side of the engine body. Oil is supplied from the oil pump to the valve timing controlling mechanism to control the valve timing adjusting mechanism. The valve timing controlling mechanism is disposed on a lower side of an outer wall of a valve train chamber in which the camshaft is received.

Abstract: An intake system of an outboard motor including a vertically arranged V-type engine comprises, an intake manifold connected to the intake ports, a surge tank connected to the intake manifold and disposed at a rear side from a central portion of the engine, a throttle body provided with a throttle valve, a plurality of intake passages for high revolution operation of the engine. The intake passages for high revolution operation extend from the surge tank and are communicated with the intake manifold, and the intake passages for low/intermediate revolution operation extend from the surge tank and are joined with the intake passages for high revolution operation, respectively. Each of the intake passages for low/intermediate revolution operation has a length longer than that for high revolution operation. A valve open/close mechanism is also disposed for opening/closing all at once portions upstream side of the joined portions of both the intake passages of the engine.

Abstract: An exhaust system for an outboard motor with a four-stroke engine having a cylinder block including a plurality of cylinders. The cylinders are arranged vertically so that a crankshaft is vertically oriented. The cylinders have different respective exhaust timings. The exhaust system further includes a plurality of separate exhaust passages that extend vertically and are formed integrally with the cylinder block. Each exhaust port from each cylinder communicates with at least one of the plurality of exhaust passages. Also, the exhaust port from the cylinder disposed at the lowest position among the plurality of cylinders communicates with the most distantly disposed exhaust passage out of the plurality of the exhaust passages. Further, the exhaust passages are joined at a point which is further downstream than the exhaust port from the lowest cylinder.

Abstract: An intermittent oil supply system is provided that discharges intermittently some of the oil supplied to the cam bearing 53 from the oil supply path 71 formed on the axial center of the camshaft 4 and via the journal path 73 toward the side of the cam 68 and the tappet 48 in line with the rotation of the camshaft 4. The intermittent oil supply system is structured so that an oil groove 77 along the axial direction of the camshaft 4 is formed, for example, on the bearing surface 59a of said cam bearing 53, and at least one end of this oil groove 77 opens on the end face 59b of the cam bearing 53 (bearing housing 59).

Abstract: An outboard motor includes an engine holder, an engine installed above the engine holder, an intake apparatus disposed on one side of the engine, and an electric equipment box and an exhaust apparatus both disposed on another side of the engine. The intake apparatus comprises a throttle body installed in a front portion of the engine, a silencer operatively connected to an upstream side of the throttle body, a surge tank disposed on one side of the engine, and an intake manifold operatively connected to the surge tank. The silencer extends around a front side of the engine towards the exhaust apparatus. The silencer is provided with an upstream end portion to which an intake port is formed to open rearward. The upstream end portion may be fixed to a wall portion of the electric equipment box and the upstream end portion of the silencer has a lower surface to which an intake port is formed so that it opens downward.

Abstract: In an outboard motor, an exhaust passage is formed to a member constituting an engine such as cylinder block and a water jacket for cooling the exhaust passage is formed adjacent to the exhaust passage between the exhaust passage and an outer wall of the engine constituting member. The outboard motor is further provided with an anode device which comprises an anode mounting port formed to the cylinder block as the engine constituting member so as to penetrate the outer wall thereof and opened to the water jacket, an anode holder detachably mounted to the anode mounting port so as to close the anode mounting port, and an anode mounted to a portion of the anode holder on the side of the anode mounting port.

Abstract: An outboard motor includes an engine holder, an engine disposed above the engine holder and the engine includes a cylinder block provided with a plurality of cylinders, a cylinder head disposed behind the cylinder block and a crankcase, a cam chain case through which said engine is mounted on the engine holder, and an exhaust apparatus operatively connected to the cylinder head. The exhaust apparatus includes an exhaust passage formed to the cam chain case, an exhaust manifold connected to the cylinder head, a water jacket formed to the exhaust manifold and another water jacket formed to the exhaust passage. The exhaust passage is formed at a portion near a central portion of the engine having most wide width in association with a lower end portion of the exhaust manifold.

Abstract: An outboard motor is equipped with an engine, an engine holder, an oil pan disposed below the engine in a state of the outboard motor being mounted to a hull, a water pump disposed below the oil pan, and a cooling water passage structure. The cooling water passage structure includes a vertical cooling water passage vertically passing through inside the oil pan and communicated with the side of the engine, a lateral cooling water passage extending in a lateral direction along a bottom surface of the oil pan, a cooling water supply pipe extending upward from the water pump and connected to a side of the engine, and a water pressure relief valve provided for the lateral cooling water passage for controlling a pressure increasing of the cooling water. The lateral cooling water passage has one end communicated with a lower end of the vertical cooling water passage and has another one end to which an upper end of the cooling water supply pipe is connected.