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JP2009107375A |
To provide a small boat capable of making a turn in a turning course intended by a boat maneuvering person regardless of any water conditions.A small boat includes engines 3, 4 mounted on a hull 2, a plurality of water jet propulsion uni...
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JP2009103604A |
To accurately and easily measure a thrust.A lower part of a stern part installed with a water jet pump 4 is manufactured separately from a main hull model 2 as a stern portion model 3, in a hull model 1 of a water jet propelled ship. The...
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JP4258006B2 |
A personal watercraft has a jet pump propulsion device. An engine powers the propulsion device and a control device controls engine speed. A steering mechanism steers a thrust direction of the propulsion device. An engine load sensor or ...
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JP2009090961A |
To provide a pod type propeller not requiring a speed reduction device, easily performing miniaturization and capable of making it to low cost.An impeller 14 is mounted to a rotation shaft 12 retained rotatably around a rotation center X...
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JP4256209B2 |
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JP4253208B2 |
A water-jet propulsion personal watercraft comprises a body including a hull and a deck covering the deck from above, a water jet pump disposed on a rear portion of the body and configured to propel the watercraft, an engine mounted forw...
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JP4252472B2 |
To provide a self-propulsion test method of a water jet propelled ship capable of obtaining two self-propulsion factors of the wake ratio and the thrust reduction ratio in an experimental and analytical manner in a tank test to obtain th...
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JP4252200B2 |
To provide a jet propulsion type planing boat capable of maintaining the steering function of the boat only when it is needed in adaptation to a situation, in the jet propulsion type planing boat capable of maintaining maneuvering of the...
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JP4249823B2 |
To provide an electrically powered nozzle driving unit for a small ship which has a small actuator with excellent responsiveness. This nozzle driving unit 6 for controlling a trim angle of a jet propulsion nozzle for a small ship is prov...
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JP4229249B2 |
A high output 2-cycle engine and a watercraft powered by the 2-cycle engine. The 2-cycle engine includes a crank case having a water jacket, and a cylinder block with a water jacket for cooling the cylinder block. Cooling water is suppli...
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JP4226254B2 |
To effectively use a rear deck. Grip like rear rails 44 are attached to right and left side parts of the rear deck 3b formed in a rear part of a hull 4, and a person in water can grab the rear rails 44 and easily board the rear deck 3b. ...
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JP4216171B2 |
A thrust control apparatus for a jet propulsion watercraft is provided. The thrust control apparatus includes a throttle sensor for detecting a fully-closed operation of a throttle of the engine, a steering sensor for detecting steering ...
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JP4215939B2 |
To provide a jet propulsion planing boat capable of maintaining steering of the boat without increasing weight. Water pressurized and accelerated by a water jet pump is injected through a rear injection nozzle and propulsion is effected ...
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JP4204415B2 |
The present invention relates to saddle-riding type watercraft and other small watercraft. In an embodiment, the invention is a small watercraft capable of reducing noise by utilizing the sponson. For example, a small watercraft is provi...
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JP4205543B2 |
A small boat has left and right sponsons extending in a longitudinal direction and respectively attached to left and right side walls forming a boat body. The sponsons are provided with an attachment section contacting a left side wall, ...
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JP2008546591A |
A marine vessel control system includes a primary marine propulsory mechanism attached to the vessel and an intelligent vessel control system. Also included is an attitude sensor linked with the intelligent vessel control system. An actu...
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JP4202471B2 |
To attach a large-capacity volume chamber having a large exhaust noise reducing effect to an exhaust pipe by reasonably using a dead space in a boat. Parts of exhaust pipes 19 and 24 are raised in the vicinity of the pump room 8 of a jet...
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JP2008302912A |
To superposedly install a pressure reduction band chamber for accelerating/increasing induction water by a water stream flowing into the pressure reduction band of generation of the jet water stream although floating/sinking of a hull af...
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JP4198515B2 |
To provide a jet propulsion boat that enables preventing the occurrence of cavitation. In a jet propulsion boat that jets water pressurized and accelerated by a water jet pump from a rear jet nozzle and is propelled by its reaction, a tu...
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JP4197416B2 |
To provide a jet propeller for a water-vehicle improved in the propelling force thereof by reducing a resistance loss in a jet water passage to restrict a deterioration in output of a driving source. This jet propeller for water-vehicle ...
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JP2008296653A |
To provide buoyancy, with reduced loss of horizontal flight ability, with simple mechanism, and with reduced damage of a runway, in a thrust deflector used in vertical and short-distance taking-off and landing.The thrust deflector has a ...
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JP2008543623A |
A highly efficient watercraft propulsion system that operates continually submerged and relies on a non-circular variable area pump discharge opening which is configured, positioned and oriented so as to maximize the hydraulic reaction b...
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JP4189529B2 |
Exhaust outlet equipment provided at a downstream end portion of an exhaust passage of a propulsion engine in a flow of an exhaust gas, wherein the engine is mounted in a small watercraft propelled by a water jet pump. The exhaust outlet...
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JP4188432B2 |
A mounting arrangement for a throttle position sensor associated with a throttle valve is disclosed. The throttle valve is positioned within an intake pipe of an intake system of an engine which is positioned in an engine compartment def...
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JP4184463B2 |
To suppress the part cost to reduce the whole cost by using a rheostat for the detection of angle change of a propulsion nozzle, and using, for the angle display of the propulsion nozzle, a trim meter for performing an angle display by c...
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JP4180999B2 |
An engine intake structure for a small boat arranged in a comparatively small space. The structure includes an intake box having an upper intake section facing one or more intake ports, and a lower intake section extending downwards from...
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JP4170071B2 |
An engine for a personal watercraft uses an open-looped cooling system and comprises a cylinder block having a water jacket within which cooling water flows, and a piston that reciprocates within the cylinder block, and a dimension of th...
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JP4166998B2 |
A power source system for a small boat is equipped with a main switch with a lanyard switch capable of turning OFF power source in case of an emergency by connecting to an occupant by wire. The power system controls the power source to a...
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JP4151858B2 |
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JP2008207756A |
To provide a canoe capable of being paddled by even children, aged persons, persons under rehabilitation without a danger of overturning and having an easy propulsion mechanism.This canoe is provided with (a) a frame body provided in a b...
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JP2008201414A |
To reduce operating load to a nozzle deflector and a reverse bucket.The reverse bucket 50 is supported on a bracket 51 fixed to a propulsion duct 12 so as to be vertically oscillated, and the attachment section of the bracket 51 to the p...
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JP4133145B2 |
A trim operating lever device is disclosed which can downwardly or vertically swing a nozzle capable of adjusting the jet direction of jet water. When the trim operating lever is gripped with a finger of the hand which is gripping the st...
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JP4133148B2 |
In a personal watercraft 10 , an access port structure is provided in which a main service opening 93 and a secondary service opening 98 for maintenance are provided in a deck 20 of the personal watercraft 10 , the main service opening 9...
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JP4101483B2 |
To provide a speed detecting device mounting structure for a vessel in which a paddle is prevented from being entangled with rubbish and seaweed in the sea, and the paddle is prevented from being damaged or picking-up mud or the like fro...
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JP4100102B2 |
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JP4097922B2 |
A jet propulsion boat is equipped with a liquid crystal display unit displaying operation information. An ordinary movement of the jet propulsion boat is regarded as an ordinary state. When the need arises for abruptly reducing the speed...
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JP4097921B2 |
A jet propulsion watercraft is provided with a multifunctional display portion that displays operating information and various types of warning conditions. Operation switches operate a content displayed in the multifunctional display por...
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JP4100342B2 |
Rotary vanes (16) having inducer-joined axial-flow vane portions (16a), mixed-flow vane portions (16b) collisionlessly connected to the axial-flow vane portions, and centrifugal vane portions (16c) collisionlessly connected to the mixed-...
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JP4091384B2 |
A personal watercraft has a structure in which a steering nozzle is mounted onto a jet nozzle so as to be swingable vertically and in the left-right directions, upper and lower support shafts for mounting the steering nozzle include uppe...
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JP4091307B2 |
A controller that executes engine output control that a throttle is closed when a boat is navigated at a predetermined speed or higher and the output of an engine is gradually increased up to predetermined output when a steering system i...
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JP4091385B2 |
A personal watercraft with a steering nozzle for determining the jet direction of jet water is movably disposed on the rear side of a water jet propeller, a connection portion is provided at an upper portion of the steering nozzle, and a...
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JP4091387B2 |
A personal watercraft having an engine, a water jet propeller on the rear side of the engine, a jet nozzle for ejecting jet water, and a steering nozzle swingable in the left-right direction. The axis of the water jet propeller is set wi...
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JP2008100628A |
To provide a fluid thrust generating device capable of generating the propulsion force, the fluid conveying force or the like without depending on the lift obtained by the rotation of blades.The fluid thrust generating device (1) compris...
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JP2008094256A |
To provide a water vehicle capable of keeping the force required for operation of a steering handle constant and allowing effective use of the space inside an engine room.A water vehicle A having a steering nozzle 16 which rotates respon...
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JP4076617B2 |
A four cycle power personal watercraft having an improved crankcase ventilating and induction system. The crankcase ventilating system ensures that the crankcase gases will be passed to the combustion chambers to eliminate unburned hydro...
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JP2008074234A |
To suddenly accelerate a water jet propulsive ship in a resting state or in a cruising state at very low speed.A ship hull 1 is equipped with a water jet propulsion device 2 having a water jet conduit line 5 running from a water intake 3...
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JP4070862B2 |
To provide a small marine vessel which prevents its hull from being excessively inclined even if only an operator gets on the vessel when the vessel is provided with seats at both the sides of the vessel, and can restrain sailing perform...
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JP4066285B2 |
To suppress the noise generated by an internal combustion engine by providing resonance chambers communicated with branch passages branched from the middle sections of air guide passages. Branch pipes 49 are protruded from the middle sec...
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JP4064109B2 |
A personal watercraft in which a battery is easily placed and charging and maintenance of the battery are easily performed, comprising: a body constituted by a deck and a hull; an engine room formed inside the body, for containing an eng...
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JP4062398B2 |
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