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    Water jet propulsion
    1.
    发明授权
    Water jet propulsion 失效
    喷水推进

    公开(公告)号：US4813898A

    公开(公告)日：1989-03-21

    申请号：US22750

    申请日：1987-03-06

    申请人： Ryoichi Nakase ,  Masayoshi Nanami ,  Seiji Inoue

    发明人： Ryoichi Nakase ,  Masayoshi Nanami ,  Seiji Inoue

    IPC分类号： B63H11/08 ,  B63B35/73 ,  B63H11/02 ,  B63H23/34

    CPC分类号： B63H23/34 ,  B63B35/731 ,  B63H11/02

    摘要： Two embodiments of improved jet drive units for watercraft wherein the jet drive impeller shaft is coupled to the engine drive shaft by a slip spline connection for facilitating removal of the jet drive unit for servicing without removal of the engine. In addition, an improved connection is provided between the impeller shaft and the impeller that dispenses for the need for splines and thus permits a smaller impeller hub and a greater efficiency jet drive unit.

    摘要翻译： 用于船舶的改进的喷射驱动单元的两个实施例，其中喷射驱动叶轮轴通过滑动花键连接联接到发动机驱动轴，以便于移除喷气驱动单元以维修而不拆卸发动机。 此外，在叶轮轴和叶轮之间提供了改进的连接，其不需要花键，因此允许较小的叶轮毂和更高效率的喷射驱动单元。

    Four cycle engine for watercraft
    2.
    发明授权
    Four cycle engine for watercraft 失效
    船用四轮发动机

    公开(公告)号：US5558549A

    公开(公告)日：1996-09-24

    申请号：US394457

    申请日：1995-02-27

    申请人： Ryoichi Nakase ,  Masayoshi Nanami

    发明人： Ryoichi Nakase ,  Masayoshi Nanami

    IPC分类号： B63B1/18 ,  B63B35/73 ,  B63H11/08 ,  B63H21/14 ,  F01M1/12 ,  F02B61/04 ,  F02B75/02 ,  F02B75/18 ,  F02M35/022 ,  F02M35/16 ,  B63H21/32

    CPC分类号： F02M35/168 ,  B63B35/731 ,  F01M1/12 ,  F02B61/045 ,  F02M35/022 ,  F02M35/10262 ,  F01M2001/126 ,  F02B2075/027 ,  F02B2075/1808 ,  F02B2275/18 ,  F02M35/10196 ,  Y02T10/146

    摘要： A small, personal watercraft powered by a four cycle internal combustion engine. The engine is provided with a dry sump lubrication system for permitting the engine to be mounted low in the hull and this dry sump lubrication system includes a lubricant tank mounted within the hull separately from, but spaced closely to, the engine. Induction and exhaust systems are provided for the engine which include position responsive valves that close when the watercraft is inverted to preclude water from entering the combustion chamber through either the intake or the exhaust system. The induction system also includes an air inlet device that has its own position responsive check valve and which provides a centrifugal separator for separating water from the air inducted into the engine.

    摘要翻译： 一个由四循环内燃机供电的小型个人船只。 发动机设置有干式油底壳润滑系统，用于允许发动机安装在船体的低端，而这种干式油底壳润滑系统包括与发动机分开但与发动机分开紧密地安装在船体内的润滑油箱。 为发动机提供感应和排气系统，其包括在船体倒置时关闭的位置响应阀，以防止水通过进气或排气系统进入燃烧室。 感应系统还包括具有其自己的位置响应止回阀的空气入口装置，并且提供用于将空气与从引入发动机的空气分离的离心分离器。

    Water propulsion unit of water jet propulsion craft
    3.
    发明授权
    Water propulsion unit of water jet propulsion craft 失效
    水上推进艇推水机组

    公开(公告)号：US4765075A

    公开(公告)日：1988-08-23

    申请号：US894281

    申请日：1986-08-07

    申请人： Ryoichi Nakase ,  Masayoshi Nanami

    发明人： Ryoichi Nakase ,  Masayoshi Nanami

    IPC分类号： F04D13/02 ,  B63B35/73 ,  B63H11/08 ,  B63H23/32 ,  B63H11/02

    CPC分类号： B63B35/731 ,  B63H23/321 ,  B63H2023/327

    摘要： Several embodiments of water propulsion units for water jet propulsion crafts wherein an improved bearing support is provided for supporting an elongated drive shaft to permit the engine to be positioned well forwardly in the hull. In accordance with each embodiment, the bearing support member is elongated and is affixed rigidly to the jet propulsion unit in a radial direction for facilitating alignment.

    摘要翻译： 用于水喷射推进工艺的水推进装置的几个实施例，其中提供改进的轴承支撑件用于支撑细长的驱动轴，以允许发动机在船体中向前定位。 根据每个实施例，轴承支撑构件是细长的并且在径向方向上刚性地固定到喷射推进单元以便于对准。

    Exhaust system for marine propulsion
    5.
    发明授权
    Exhaust system for marine propulsion 失效
    船舶推进排气系统

    公开(公告)号：US4811560A

    公开(公告)日：1989-03-14

    申请号：US96593

    申请日：1987-09-11

    申请人： Ryoichi Nakase ,  Masayoshi Nanami

    发明人： Ryoichi Nakase ,  Masayoshi Nanami

    IPC分类号： B63B35/73 ,  F01N13/00 ,  F01N13/12 ,  F01N3/04

    CPC分类号： F01N13/12 ,  B63B35/731 ,  F01N13/004 ,  F01N2590/022

    摘要： Several embodiment of small boats having improved exhaust systems for precluding the entry of water into the engine combustion chambers from the body of water in which the watercraft is operating. In each embodiment, the exhaust system includes a horizontally extending expansion chamber with an exhaust gas outlet whichis defined by a vertically extending tube in the expansion chamber so as to prevent the likelihood of water reentering the engines through the exhaust system. Several arrangements are disclosed for draining the water from the expansion chamber and the exhaust gases are discharged from the engine into the tunnel around the jet drive unit.

    摘要翻译： 具有改进的排气系统的小型船的几个实施例，用于排除水从船体运行的水体进入发动机燃烧室。 在每个实施例中，排气系统包括具有排气出口的水平延伸的膨胀室，排气出口由膨胀室中的垂直延伸的管限定，以便防止水通过排气系统重新进入发动机的可能性。 公开了用于从膨胀室排出水并且废气从发动机排出到喷射驱动单元周围的隧道中的几种布置。

    Small watercraft
    6.
    发明授权
    Small watercraft 有权
    小船只

    公开(公告)号：US06200178B1

    公开(公告)日：2001-03-13

    申请号：US09305899

    申请日：1999-05-05

    申请人： Ryoichi Nakase ,  Naoki Katoh ,  Shigeyuki Ozawa ,  Masayoshi Nanami

    发明人： Ryoichi Nakase ,  Naoki Katoh ,  Shigeyuki Ozawa ,  Masayoshi Nanami

    IPC分类号： B63H2110

    CPC分类号： F02M37/007 ,  B63B35/731 ,  B63H21/38 ,  F02B33/04 ,  F02B61/045 ,  F02B75/20 ,  F02B2075/025 ,  F02B2075/1808 ,  F02M31/20 ,  F02M37/0052 ,  F02M37/0076 ,  F02M37/10 ,  F02M37/20 ,  F02M69/465 ,  Y02T10/126

    摘要： An improved fuel delivery and injection system for a small watercraft engine reduces the heat effects within an enclosed engine compartment upon various components of the engine and upon the fuel within the fuel system. The fuel system integrates a fuel pump within a fuel tank at a location which minimizes the effects of watercraft leaning. The inlet of the fuel pump desirably corresponds, in the lateral direction, with a position of an inlet to the jet pump unit. In this position, the pump is less likely to draw air as the watercraft maneuvers. The fuel lines also are arranged within the engine to minimize the effect of engine heat produced by the exhaust system on the fuel delivery lines. The arrangement of the fuel pump and fuel delivery lines consequently improves the consistency of the fuel/air ratio within the fuel charge produced by the engine as less air and vapor delivered to the fuel injectors.

    摘要翻译： 用于小型船舶发动机的改进的燃料输送和喷射系统减少了在发动机的各种部件和燃料系统内的燃料的封闭的发动机舱内的热效应。 燃料系统将燃料泵集成在燃料箱内的最小化船舶倾斜效果的位置。 燃料泵的入口理想地在横向方向上对应于喷射泵单元的入口的位置。 在这个位置上，当船只操纵时，泵不太可能吸入空气。 燃料管线也布置在发动机内，以最小化排气系统对燃料输送管线产生的发动机热量的影响。 因此，燃料泵和燃料输送管线的布置改善了由发动机产生的燃料燃料中的燃料/空气比的一致性，因为较少的空气和蒸气被输送到燃料喷射器。

    Motor for watercrafts
    7.
    发明授权
    Motor for watercrafts 失效
    汽油机

    公开(公告)号：US4773883A

    公开(公告)日：1988-09-27

    申请号：US885862

    申请日：1986-07-15

    申请人： Ryoichi Nakase ,  Masayoshi Nanami

    发明人： Ryoichi Nakase ,  Masayoshi Nanami

    IPC分类号： B63B35/73 ,  B63H21/00 ,  F01N13/00 ,  F01N13/12 ,  F01N13/18 ,  F01N99/00 ,  F02B61/04 ,  F02B75/02 ,  F02B75/18 ,  F02F7/00 ,  B63H21/32 ,  B63H21/38

    CPC分类号： B63B35/731 ,  F02B61/045 ,  B63B2770/00 ,  F02B2075/025 ,  F02B2075/1808

    摘要： Two embodiments of small watercraft incorporating an improved exhaust system for handling the exhaust gases from the engine. In each embodiment, at least one expansion chamber is provided for silencing and cooling the exhaust gases and exhaust gases are delivered from the engine exhaust port to the expansion chamber through a horizontally extending exhaust conduit that has its outlet opening communicating with the expansion chamber at a position spaced substantial distances from the vertically extending side and end walls of the expansion chamber for precluding the likelihood of entry of water into the engine cylinders through the exhaust system. In one embodiment, two such expansion chambers are employed.

    摘要翻译： 结合了用于处理来自发动机的废气的改进的排气系统的小型船只的两个实施例。 在每个实施例中，提供至少一个膨胀室用于使废气沉降和冷却，并且废气通过水平延伸的排气管道从发动机排气口输送到膨胀室，该排水管的出口与膨胀室连通， 位置与膨胀室的垂直延伸的侧壁和端壁间隔相当的距离，以排除通过排气系统进入发动机气缸的可能性。 在一个实施例中，采用两个这样的膨胀室。

    Exhaust timing control for a planing-type boat
    8.
    再颁专利
    Exhaust timing control for a planing-type boat 失效
    刨船型排气时序控制

    公开(公告)号：USRE37631E1

    公开(公告)日：2002-04-09

    申请号：US09621102

    申请日：2000-07-20

    申请人： Masayoshi Nanami ,  Ryoichi Nakase

    发明人： Masayoshi Nanami ,  Ryoichi Nakase

    IPC分类号： B63H2126

    CPC分类号： F02B61/045 ,  F02B2075/025 ,  F02D13/0284 ,  Y02T10/18

    摘要： A two-cycle internal combustion engine for a watercraft that includes a cylinder block having a cylinder bore, a piston reciprocating in the cylinder bore and an exhaust port formed in the cylinder block. An exhaust path extends from the cylinder bore for exhausting combustion products from the cylinder bore. An exhaust control valve cooperates with the exhaust port and is movable between at least a first position for advancing the closing of the exhaust port so as to increase the compression ratio in the engine and a second position for delaying the closing of the exhaust port so as to decrease the compression ratio in the engine. Means for controlling the exhaust control valve between the first and second position are provided and are controlled in response to a watercraft condition.

    摘要翻译： 一种用于船舶的双周期内燃机，其包括具有气缸孔的气缸体，在气缸孔中往复运动的活塞和形成在气缸体中的排气口。 排气路径从气缸孔延伸，用于从气缸孔排出燃烧产物。 排气控制阀与排气口协同工作，并可在至少第一位置之间移动，用于使排气口的关闭前进，以增加发动机的压缩比，以及延迟排气口关闭的第二位置，以便 以降低发动机中的压缩比。 提供用于控制排气控制阀在第一位置和第二位置之间的装置，并且响应于船只状态而被控制。

    Watercraft fuel supply system
    9.
    发明授权
    Watercraft fuel supply system 失效
    船舶燃料供应系统

    公开(公告)号：US06279546B1

    公开(公告)日：2001-08-28

    申请号：US08777486

    申请日：1996-12-30

    申请人： Ryoichi Nakase ,  Naoki Katoh ,  Shigeyuki Ozawa ,  Masayoshi Nanami

    发明人： Ryoichi Nakase ,  Naoki Katoh ,  Shigeyuki Ozawa ,  Masayoshi Nanami

    IPC分类号： F02M3704

    CPC分类号： F02M37/20 ,  B63B35/731 ,  B63H21/14 ,  B63H21/38 ,  F02M31/20 ,  Y02T10/126

    摘要： An improved fuel delivery and injection system for a small watercraft engine reduces the heat effects within an enclosed engine compartment upon a fuel pump of and the fuel within a fuel injection system. The fuel delivery system includes a vapor separator and a high-pressure fuel pump. The fuel pump is at least partially located within the vapor separator. The fuel within the vapor separator cools the fuel pump. The vapor separator also is positioned between a pair of air ducts such that an air stream between the ducts cools the fuel within the vapor separator. This arrangement consequently improves the consistency of the air/fuel ratio in the fuel charges delivered to the engine cylinders, provides a compact structure between the fuel pump, and the vapor separator and improves the durability of the fuel pump.

    摘要翻译： 用于小型船只发动机的改进的燃料输送和喷射系统减少了在燃料喷射系统内的燃料泵和燃料的封闭发动机舱内的热效应。 燃料输送系统包括蒸汽分离器和高压燃料泵。 燃料泵至少部分地位于蒸气分离器内。 蒸气分离器内的燃料冷却燃油泵。 蒸气分离器也位于一对空气管道之间，使得管道之间的空气流冷却蒸汽分离器内的燃料。 由此，能够提高输送到发动机气缸的燃料的空燃比的一致性，在燃料泵与蒸汽分离器之间提供紧凑的结构，提高燃料泵的耐久性。