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JP3366623B2 |
To provide a surface traveling ship to prevent lowering of pump efficiency due to cavitation phenomenon and improve the speed of the boat without the occurrence of a problem, such as complication of structure, the increase of a boat weig...
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JP2003003919A |
To provide a small-sized planing boat provided with an engine in which a splash of water, if applied to the engine, will not be applied to a spark plug, and in which heat generated from the engine or an exhaust pipe will not affect a rid...
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JP3363068B2 |
To ensure sealing ability by a method wherein a duct for water intake is structured such that the shape of the inner surface thereof is prevented from changing. A water jet propulsion ship is formed such that a water intake port, opened ...
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JP2002371902A |
To protect an engine and warn an user by gradually lowering an engine speed when lowering of oil pressure of an lubricating oil is detected. When an oil pressure sensor 72 detects lowering of the oil pressure in a condition that the engi...
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JP2002371821A |
To provide a lubricating system of an engine for a small vessel capable of realizing stable circulation of oil by suppressing unbalanced distribution of oil at a bottom part within a crank case. In this lubricating system for the engine ...
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JP2002371875A |
To improve the feeling even when the overspeed is frequently repeated by reducing any fluctuation is rotation when the engine speed is dropped in order to prevent the overspeed. When the engine speed of an engine 6 is in the overspeed st...
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JP2002370692A |
To reduce the size and weight of an air cushion ship, and increase efficiency in propulsion and buoyancy by forming a structure for driving both a propelling part with the retreat function and a floating part by one driving part. One dri...
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JP3358718B2 |
To improve the backing efficiency of a planing boat by means of a reverse mechanism serving also as a side thruster, while holding its gliding performance intact. A reverse device 1 for a planing boat has a deflector 1A movably installed...
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JP2002364323A |
To provide a four-cycle engine for a small-sized ship sufficiently supplying oil into a valve regardless of a layout position of the valve in an intake passage, in other words, regardless of a layout position of an oil supply port into t...
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JP2002364328A |
To provide a ventilation system for a small-sized ship engine, capable of certainly preventing oil from flowing in an intake system even if a small-sized ship is capsized. In this ventilation system for a small-sized ship engine 3 wherei...
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JP2002362486A |
To allow the components of a propelling device for a small-sized ship, including an internal combustion engine and a supporting bracket for supporting the internal combustion engine on the bottom of a hull to be ar ranged in a compact fo...
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JP2002357125A |
To provide a small-sized planing boat provided with an engine cooling system capable of preventing the infiltration of sand, etc., into cooling water and discharging cooling water from an engine simply after use and having excellent dail...
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JP2002356197A |
To provide an exhaust structure of a small jet-propelled planing boat, having a large silencing effect and capable of inhibiting water from entering an exhaust system even in the case of overturning. In this exhaust structure of a small ...
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JP3351669B2 |
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JP3349712B2 |
An impeller with semiaxial blading and a vertical axis of rotation is rotatably arranged in a well-shaped thrust housing. The drive for the impeller is inserted into the thrust housing from above through a cover plate, and the thrust hou...
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JP3349799B2 |
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JP3349022B2 |
To provide a water jet propulsion device to change a tilt angle in a desired relation with a steering angle and simplify a link mechanism between an operation handle and a steering nozzle. A steering nozzle 6 is horizontally and vertical...
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JP3348816B2 |
To make the shape change for a water suction port lip part into a shape change free and easy without a relation with a grate, and let the grate have straightening action on a water flow in a suction duct, by eliminating a difference in l...
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JP3349021B2 |
To shorten an overall length, to reduce a loss of thrust during tilting and during steering, and to reduce the number of components. A spherical seat 4 is arranged at the rear end part of a pump case 3 to contain a rotating impeller 2. A...
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JP3345611B2 |
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JP3342961B2 |
PURPOSE:To certainly prevent immersion of water into an inboard section even when leakage takes place on an inspection door of a water jet propulsion machinery. CONSTITUTION:A water jet propulsion machinery 4 is set on a stern ship's bot...
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JP2002316695A |
To reduce the size and cost of a propulsion system by reducing lengths in front and rear directions between an engine and a jet pump.A duct intake 12 and the jet pump 3 are fixed on a rear part of the engine 2 in series to form a rigid s...
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JP2002316690A |
To remove the sticking of a fuel injection valve (needle valve).With a starter switch 81 turned on, a fuel pump 47 is controlled so as to be driven after the magnetic solenoid 34f of the fuel injection valve 34 is energized for a prescri...
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JP2002303170A |
To provide a jet propelled planing boat offering simple construction with no increase in weight for keeping steering even when a throttle is turned off.The jet propelled gliding boat to be propelled by utilizing reaction upon jetting a w...
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JP3334034B2 |
To provide a water jet propelling device for a ship which can be always started and produce suction performance without cavitation and high propelling performance. A pump base 7 is fixed to the bottom 1b of a ship such that the flow-in p...
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JP3331590B2 |
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JP3331586B2 |
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JP3331587B2 |
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JP3331588B2 |
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JP3331585B2 |
To prevent resistance of waves and oscillation of the left and right directions and to guarantee a stable high speed navigation by mounting a floating body on internal surface of a hull, providing a conical wave projecting body projectin...
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JP2002284093A |
To prevent an oil filter from sustaining heat damage of catalyst and to perform an exchange operation easily by contriving an layout of the catalyst and the oil filter.Oil filters 27 (F, B, B', L, R) are arranged above a water intake 8c ...
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JP2002276417A |
To provide a small planing boat having a fuel injection type two-cycle multi-cylinder engine capable of improving exhaust gas and fuel consumption.This jet propulsion type planing boat comprises the fuel injection type two-cycle multi-cy...
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JP2002256836A |
To uniformly and effectively cool a whole oil tank with a compact structure.In an oil tank cooling structure of a small craft provided with a propeller 11 driven by an engine 3 and cooled by introducing the water supplied from a propelle...
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JP2002255094A |
To journal a crankshaft of an engine without lengthening the width of the crankshaft direction and to smoothly and surely lubricate a bearing.In a power transmission device A for the engine 3 for transmitting a driving force of the crank...
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JP2002250227A |
To increase power generation capacity by cooling a flywheel magneto and to prevent vaporization of oil by cooling an oil pump by cooling a flywheel cover of the engine in a simple structure.A water jacket 80 is formed on an oil pump moun...
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JP3321421B2 |
A mixed-flow type water jet pump having configured so that a tip clearance between an inner wall of a pump casing and an outer peripheral edge of an impeller can easily be adjusted, and which can easily be mounted on a watercraft. A pump...
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JP2002242745A |
To detect atmospheric pressure exactly with a intake pressure sensor and store a more accurate atmospheric pressure value even if a battery voltage drops during cranking or the like.A detected value of the intake pressure sensor 61 is st...
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JP2002240792A |
To provide a boat including a propulsion system for generating a pressurized water flow passing through a hull having a port side and a starboard and through a nozzle.A steering device is operationally connected to the nozzle 18. When th...
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JP2002242676A |
To provide oil cooler installing structure of a marine engine preventing drop in filling efficiency caused by rising of intake air temperature.This oil cooler installing structure of the marine engine mounts the engine 8 on the inside of...
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JP2002242673A |
To raise the temperature of cooling water around a cylinder bore to a appropriate value.This engine cooling structure of small ship 1 has a propeller 30 driven with an engine 20, and cooling water supplied from the propeller 30 is suppli...
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JP2002240775A |
To facilitate the maintenance of an engine and parts and to enlarge exhaust system components and intake system components without widening the width of an engine room.A cover body 47 swelling outward is detachably mounted on side openin...
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JP2002242690A |
To improve the layout of an exhaust system constitutional component and an intake system constitutional component in addition to the consideration to prevention of noise and enhance of engine output.A cylinder shaft C2 of an engine 6 is ...
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JP2002240793A |
To solve the problem wherein the startability of an engine is bad because a fuel pressure is low when starting the engine because a fuel pump is energized after a start switch is turned on and the engine starts cranking, in a water jet p...
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JP3317618B2 |
A personal watercraft includes a component arrangement which reduces heat exposure to many critical, heat-sensitive components of the watercraft. The personal watercraft includes a calalyzer within an exhaust system to treat engine exhau...
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JP3318901B2 |
PURPOSE: To make the trim adjusting operability of a water jet propulsion boat satisfactory so as to enable easy trim adjustment. CONSTITUTION: A water jet propulsion device has an engine installed at a boat body 11, a water jet duct dis...
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JP3315797B2 |
PURPOSE:To enable the sternway of a hull to be made quickly even if a load to the hull or the situation of waves change, and also, enable any work on a nozzle for water jet to be achieved easily. CONSTITUTION:A hull is advanced by jettin...
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JP2002225786A |
To provide an electrical equipment box having a simple takeoff of a wiring and a simple sealing structure, and facilitating the replacing or maintenance of electrical equipment articles.A small ship 1 is equipped with a propelling machin...
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JP2002225796A |
To provide a water jet propelling machine reducing the weight of a hull by shortening the whole length of the propelling machine while improving the propelling efficiency of the water jet propelling machine for a ship requiring a large p...
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JP2002227696A |
To provide an engine control device of a small ship, it is possible to prevent the rapid thrust occurrence at the time of start up.A crankshaft 12 of engine 3 and an impeller shaft 57 of a propeller 11 are always connected, in a small sh...
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JP2002227732A |
To provide a device with a simple structure preventing an air cleaner of an engine from being filled with water and impeding its function when an on-water bike overturns.A filter paper type element mounted on an intake passage of the eng...
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