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11. 发明专利

JPH04342692A IMPELLER STRUCTURE OF WATER JET TYPE PROPULSIVE SHIP 失效
公开(公告)号：JPH04342692A
公开(公告)日：1992-11-30
申请号：JP14403091
申请日：1991-05-20
申请人： SANSHIN KOGYO KK
发明人： TAZAKI HIROSHI , HENMI YASUHIKO
IPC分类号： B63H11/08 , B63H11/117
摘要： PURPOSE:To make a helical blade part compact and improve its performance by forming an impeller for sucking and jetting water by fixing the helical blade part to a boss part, and forming the outer edge and longitudinal double edges of the helical blade part into specified forms to the boss part, respectively. CONSTITUTION:In a water jet type propulsive ship, an impeller casing 41 is connected to the lower stream end of a water intake duct (water passage) 51 in a hull 1, and an impeller 42 is received therein. A static blade casing 43 is connected to the lower stream end of the impeller casing 41, a static blade 431 is received therein, and a nozzle (water blowing hole) 45 is connected to this lower stream end. A helical blade part 422 radially extending is fixed to a boss part 421 fixed to an output shaft 3 within the impeller casing 41. The outer edge of the helical blade part 422 is disposed in parallel to the shaft center of the boss part 421, and both the longitudinal edges are inclined down on the lower stream side to the shaft center of the boss part 421.

12. 发明专利

JPH11334695A INTAKE AIR SILENCER OF INTERNAL COMBUSTION ENGINE FOR SHIP 失效
公开(公告)号：JPH11334695A
公开(公告)日：1999-12-07
申请号：JP21467398
申请日：1998-07-29
申请人： YAMAHA MOTOR CO LTD
发明人： ITO KAZUMASA , SUZUKI AKITAKA , HENMI YASUHIKO
IPC分类号： B63H21/14 , B63B35/73 , B63H21/30 , B63H21/32
摘要： PROBLEM TO BE SOLVED: To improve riding comfort of a ship by silencing noises of the internal combustion engine efficiently as well as improve engine performance by efficiently preventing a large amount of atomized water from flowing into the internal combustion engine at once. SOLUTION: A propelling internal combustion engine 16 is housed within a ship body 3. An intake air member 18 extended out from the internal combustion engine 16 is disposed. An atmospheric side is communicated with the inside of the internal combustion engine 16 through an intake passage 42 within the intake air member 18. A seat 32 of striding type is disposed at the upper portion of the ship body 3 over the internal combustion chamber 16. A pair of right and left foot steps 35 are disposed at both sides of the seat. Placed is a box-like body 61 having the inner space communicated with the intake passage 42 through a communication passage that branches from the intermediate position of the intake passage 42.

13. 发明专利

JP2000170612A INTAKE DEVICE OF SMALL-SIZED MARINE ENGINE 失效
公开(公告)号：JP2000170612A
公开(公告)日：2000-06-20
申请号：JP35185198
申请日：1998-12-10
申请人： YAMAHA MOTOR CO LTD
发明人： HENMI YASUHIKO
IPC分类号： B63H21/14 , B63B35/73 , B63H21/00 , F02B61/04 , F02B75/02 , F02B75/18 , F02M23/00 , F02M35/10 , F02M35/108 , F02M35/16
摘要： PROBLEM TO BE SOLVED: To improve accelerating performance by improving responsiveness of intake air in acceleration even if an intake box and an intake pipe are apart from each other. SOLUTION: An engine 7 having a plurality of cylinders 7d to 7f is loaded in a ship, intake pipes 21a are respectively connected to one surfaces of respective cylinders 7d to 7f of this engine 7, the upstream ends of respective intake pipes 21a and the downstream end of a connecting pipe 22 are connected to each other, an intake box 23 having an intake port is arranged ahead of the engine 7, the downstream of the intake box 23 and the upstream of the connecting pipe 22 are connected to each other by a connecting hose 24, and an auxiliary intake hole for performing intake in acceleration is formed on the connecting pipe 22.

14. 发明专利

JPH10252562A ARRANGING STRUCTURE FOR PROPULSION GEAR CONSTITUTIONAL PART IN SHIP 失效
公开(公告)号：JPH10252562A
公开(公告)日：1998-09-22
申请号：JP7069797
申请日：1997-03-07
申请人： YAMAHA MOTOR CO LTD
发明人： HENMI YASUHIKO
IPC分类号： B63B35/73 , F02B61/04 , F02B67/00 , F02B75/02 , F02B75/18 , F02B75/20 , F02M7/08 , F02M17/34 , F02M35/16
摘要： PROBLEM TO BE SOLVED: To juxtapose a cylinder and a suction guide member, and when a throttle valve provided in this suction guide member is quickly open operated, in the case of providing a supply fuel increase means capable of supplying fuel to an intake passage of the suction guide member, to prevent fuel in the inside of this supply fuel increase means from being heated by heat of the cylinder. SOLUTION: A cylinder 40 protruded toward upward from a crankcase 37 and a suction guide member 51 are juxtaposed. A supply fuel increase means 125 is provided, which, when a throttle valve 70 is quickly open operated, can supply fuel to an intake passage 55 of the suction guide member 51. An increase operating means 140 of the supply fuel increase means 125, positioned in the vicinity of the suction guide member 51 also in its outside, is positioned in an opposite side to the cylinder 40 with the suction guide member 51 serving as a reference.

15. 发明专利

JPH10152098A INTAKE AIR SYSTEM STRUCTURE FOR SHIP PROPULSION DEVICE 失效
公开(公告)号：JPH10152098A
公开(公告)日：1998-06-09
申请号：JP8221097
申请日：1997-03-13
申请人： YAMAHA MOTOR CO LTD
发明人： HENMI YASUHIKO
IPC分类号： B63H21/14 , B63B35/73 , B63H21/30 , F02B61/04 , F02M35/10 , F02M35/16
摘要： PROBLEM TO BE SOLVED: To improve engine performance by conducting suction smoothly, and preventing moisture sucked in an intake air box from being sucked in an internal combustion engine when air is sucked in the internal combustion engine passing through the intake air box and an intake air guiding member. SOLUTION: An intake air guiding member 51 is formed equipped with an intake air passage 58. An intake air box 56 is formed, which is fitted at the upper end of the intake air guiding member 51 to cover an opening at an the upper end of the intake air passage 58. An intake air inlet 72 for communication between its inside and outside is formed at the intake air box 56, and a communication hole 67c is also formed for communicating the inside of the intake air passage 56 with the intake air passage 58 of the intake air guiding member 51. The intake air box 56 is formed so that the internal width dimension W1 in its horizontal direction may be increased at the upper part and decreased at the lower part when viewed from its cross-section. The intake air inlet 72 is formed at the upper part of the intake air box 56, and a drain hole 85 is formed at its lower part.

16. 发明专利

JPH10119883A ENGINE COOLING DEVICE FOR PLANING BOAT 失效
公开(公告)号：JPH10119883A
公开(公告)日：1998-05-12
申请号：JP27065596
申请日：1996-10-14
申请人： YAMAHA MOTOR CO LTD
发明人： HENMI YASUHIKO , GOHARA YOSHIHIRO
IPC分类号： B63H11/00 , B01D35/02 , B63B13/00 , B63B35/73 , B63H11/08 , F01P3/02 , F01P3/20
摘要： PROBLEM TO BE SOLVED: To provide the engine cooling device for a planing boat, which prevents a water intake port from being clogged with foreign matter, and can feed the sufficient amount of cooling water stably to an engine. SOLUTION: In the engine cooling device for a surface planing boat where an intake port 20 is opened in the downstream of an impeller 15 for the surface planing boat which can acquire intended propulsion force by drivingly rotating the impeller with an engine operated, and water taken in out of the intake port 20 is fed to the engine for cooling the engine, a porous filter 21 is provided to the intake port 20. The provision of the porous filter 21 for the intake port 20 thereby surely prevents foreign matter such as small stones and the like with are sucked in the inside of a housing 12 by the impeller 15, by the filter 21 from being clogged, and the sufficient amount of cooling water required can thereby be fed to the engine stably.

17. 发明专利

JPH10103157A FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH10103157A
公开(公告)日：1998-04-21
申请号：JP27723196
申请日：1996-09-27
申请人： YAMAHA MOTOR CO LTD
发明人： HENMI YASUHIKO
IPC分类号： F02M3/08
摘要： PROBLEM TO BE SOLVED: To easily perform operation relating to each operation part of a main adjusting screw and an idle adjusting screw in a carburetor, even in the case of arranging an exhaust pipe in the vicinity of the carburetor. SOLUTION: A main fuel passage 98 is provided, which communicates with a main nozzle 97 from the outside of a carburetor case 67 of a carburetor 53. An idle fuel passage 100 is provided, which communicates with an idle port 99 from the outside of the carburetor case 67. A main adjusting screw 101 capable of adjusting an opening of the main fuel passage 98 and an idle adjusting screw 102 capable of adjusting an opening of the idle fuel passage 100 are provided. In the vicinity of the outward in one side surface of the carburetor case 67, a first exhaust pipe extended from an internal combustion engine is arranged. Each operation part 101a, 102a of the main/idle adjusting screw 101, 102 is arranged in the other side surface of the carburetor case 67.

18. 发明专利

JPH09132194A WATER JET PROPULSION DEVICE FOR SMALL-SIZED SURFACE RUNNING BOAT 失效
公开(公告)号：JPH09132194A
公开(公告)日：1997-05-20
申请号：JP31349595
申请日：1995-11-07
申请人： YAMAHA MOTOR CO LTD
发明人： KOYANO SATOSHI , MADACHI TAKAAKI , HENMI YASUHIKO
IPC分类号： B63B35/73 , B63H11/08
摘要： PROBLEM TO BE SOLVED: To smoothen water flows to respective impellers and prevent air from being sucked through a water suction port at turning while inclining a hull by rotating right and left a pair of impellers in the opposite direction to each other so as to improve balance of right and left turning performance at turning while inclining the hull, and preventing preturnings generated on this side of the respective impellers from interfering with each other, in a water jet propulsion device. SOLUTION: In a small-sized surface running boat with a pair of jet pumps 15 arranging impellers 17 on the way of water flow ducts 16 from a water suction port 16a to a water jet port 16b, arranged right and left symmetrically on both sides of the center line in the lengthwise direction of a hull, the front end edge 16c of a wall part partitioning the waterflow ducts 16 of right and left jet pumps 15 is formed into a forward tilted end edge under the condition in which at least the one part is extended forward from the rear end edge of the water suction port 16a, and the water suction port 16a of both water flow ducts 16 is opened as one water suction port on the center line in the lengthwise direction of the hull. In addition to this, rotating directions of the respective impellers 17 in both water flow ducts 16 are set to be in opposite to each other.

19. 发明专利

JPH0999897A JET PUMP FITTING STRUCTURE FOR SMALL SURFACE CRUISING BOAT 失效
公开(公告)号：JPH0999897A
公开(公告)日：1997-04-15
申请号：JP28651295
申请日：1995-10-06
申请人： YAMAHA MOTOR CO LTD
发明人： KOYANO SATOSHI , HENMI YASUHIKO
IPC分类号： B63H11/08
摘要： PROBLEM TO BE SOLVED: To prevent the vibrations of a jet pump from being transmitted to a hull via fitting bolts by fitting the jet pump to the recess of a hull bottom face from the rear, and inserting vibration absorbing members between the bolts and fitting holes. SOLUTION: A duct inlet component member 16 arranged while the front section of a circular portion 16a is coupled with the coupling section 13b of a recess 13 is screwed to the step section 13c of the recess 13 by bolts 41 through the bolt screwing holes 16d of a fitting insertion section 16c. A jet pump 17 is screwed to the bolt screwing holes 16d of the fitting insertion section 16c by bolts 45 inserted from the rear into the fitting holes 31b penetrated in the hull longitudinal direction in the fitting sections 31a provided at the rear end outer periphery section of a housing front member 31 via vibration absorbing members 44 constituted of a metal collar member 43 and a rubber elastic material.

20. 发明专利

JPH09100830A BEARING PART STRUCTURE OF JET PUMP FOR SMALL HYDROPLANING CRAFT 失效
公开(公告)号：JPH09100830A
公开(公告)日：1997-04-15
申请号：JP28651395
申请日：1995-10-06
申请人： YAMAHA MOTOR CO LTD
发明人： HENMI YASUHIKO
IPC分类号： B63H11/08 , F16C19/06 , F16C19/18 , F16C19/56 , F16C35/06
摘要： PROBLEM TO BE SOLVED: To improve the durability of a whole bearing part by reducing the diameter of a forward seal part so that a bearing part of a jet pump for a small hydroplaning craft can be fitted from the rear side to avoid that the diameter of a hub part of an impeller is larger than required, bearing the thrust of a rotary shaft by a rear bearing, and dispersing the load to each bearing. SOLUTION: In a bearing part structure of a jet pump 17 for a small hydroplaning craft in which a rotary shaft 12 of an impeller is supported on bearings 35, 36 arranged on each side before and behind a bearing housing 34 formed rearward of an impeller 18, the outer diameter of a seal part 37 of the bearing housing 34 is smaller than the outer diameter of a forward bearing 35, and the outer diameter of an impeller rotary shaft 12c of a part located between the bearings 35, 36 is not greater than the inner diameter of the forward bearing 35, and a separate collar member 38 is arranged. A member 43 to be abutted on a rear end part of an inner ring of the rear bearing 36 is fixed to an impeller rotary shaft 12e in an attachable/detachable manner to/from its rear end.

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