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    Fuel injection control device and method for multi-fuel engine
    3.
    发明授权
    Fuel injection control device and method for multi-fuel engine 有权
    多燃料发动机燃油喷射控制装置及方法

    公开(公告)号：US07856307B2

    公开(公告)日：2010-12-21

    申请号：US12562135

    申请日：2009-09-18

    申请人： Atsushi Ito ,  Yoichi Takahashi ,  Hideya Horie

    发明人： Atsushi Ito ,  Yoichi Takahashi ,  Hideya Horie

    IPC分类号： F02D41/30

    CPC分类号： F02D19/12 ,  F02D41/0025 ,  F02D41/0235 ,  F02D41/06 ,  F02D41/1454 ,  F02D41/2451 ,  F02D2200/0612 ,  F02M25/14

    摘要： A fuel injection control device for a multi-fuel engine includes a corrector and a reviewer. An alcohol concentration learning unit is provided to learn an alcohol concentration in an injected fuel based on an oxygen concentration detected in an exhaust gas. A fuel injection amount controller is provided to control a fuel injection amount based on a learning value corresponding to the oxygen concentration. The corrector is configured to reduce the fuel injection amount corresponding to the learning value for a predetermined time period when the learning value is higher than a threshold value when an engine is started. The reviewer is configured to review the learning value to provide a revised learning value based on the oxygen concentration while the corrector reduces the fuel injection amount. The fuel injection amount is controlled based on the revised learning value after the corrector reduces the fuel injection amount.

    摘要翻译： 一种用于多燃料发动机的燃料喷射控制装置，包括校正器和检查器。 提供了一种酒精浓度学习单元，用于基于在废气中检测到的氧浓度来了解喷射的燃料中的酒精浓度。 提供燃料喷射量控制器，用于基于与氧气浓度对应的学习值来控制燃料喷射量。 校正器被配置为当发动机起动时学习值高于阈值时，将与学习值对应的燃料喷射量减小预定时间段。 审查者被配置为审查学习值以提供基于氧浓度的修正学习值，同时校正器减少燃料喷射量。 在校正器减少燃料喷射量之后，基于修正后的学习值来控制燃料喷射量。

    Fuel injection control apparatus and method for a multi-fuel engine, and engine incorporating same
    4.
    发明申请
    Fuel injection control apparatus and method for a multi-fuel engine, and engine incorporating same 有权
    用于多燃料发动机的燃料喷射控制装置和方法，以及包含其的发动机

    公开(公告)号：US20090248279A1

    公开(公告)日：2009-10-01

    申请号：US12378686

    申请日：2009-02-18

    申请人： Atsushi Ito ,  Yoichi Takahashi

    发明人： Atsushi Ito ,  Yoichi Takahashi

    IPC分类号： F02D41/30

    CPC分类号： F02D41/0025 ,  F02D19/061 ,  F02D19/084 ,  F02D19/088 ,  F02D41/1454 ,  F02D2200/023 ,  F02D2200/0404 ,  Y02T10/36

    摘要： A fuel injection control apparatus for a multi-fuel engine can optimize a fuel injection quantity, using only one basic injection map, irrespective of alcohol concentration of a fuel. An E-concentration determining apparatus determines alcohol concentration of a fuel, based on a measured oxygen amount in exhaust. Basic injection quantities are stored in a basic injection map. E-concentration coefficients are stored in an E-concentration coefficient table for a plurality of alcohol concentrations in the fuel. A basic injection quantity, corresponding to a current rotary engine speed and a throttle opening, is selected from the basic injection map. A concentration coefficient, corresponding to the alcohol concentration and the basic injection quantity, is selected from the E-concentration coefficient table. A fuel injection quantity calculator determines an applied fuel injection quantity by multiplying the basic injection quantity by the concentration coefficient. Further adjustments using a number of additional correction coefficients may be made, as needed.

    摘要翻译： 不管燃料的酒精浓度如何，用于多燃料发动机的燃料喷射控制装置可以仅使用一个基本喷射图来优化燃料喷射量。 电离浓度测定装置基于排气中测定的氧量来确定燃料的醇浓度。 基本注射量存储在基本注射图中。 E浓度系数存储在燃料中的多个醇浓度的E浓度系数表中。 从基本注入图中选择对应于当前旋转发动机转速和节气门开度的基本喷射量。 从E浓度系数表中选出与酒精浓度和碱性喷射量对应的浓度系数。 燃料喷射量计算器通过将基本喷射量乘以浓度系数来确定施加的燃料喷射量。 可以根据需要进行使用多个附加校正系数的进一步调整。

    Coupling structure for coupling two pipes
    6.
    发明授权
    Coupling structure for coupling two pipes 失效
    用于连接两根管道的联轴器结构

    公开(公告)号：US5909903A

    公开(公告)日：1999-06-08

    申请号：US821776

    申请日：1997-03-20

    申请人： Yoichi Takahashi ,  Eizo Suyama

    发明人： Yoichi Takahashi ,  Eizo Suyama

    IPC分类号： F16L23/04 ,  F16L13/14 ,  F16L21/00

    CPC分类号： F16L13/141 ,  F01N13/1805 ,  F01N13/1855 ,  F01N13/1872 ,  F16L23/04

    摘要： For coupling first and second metal pipes, a coupling structure is provided which comprises a first diametrically angled end portion of the first metal pipe and a second diametrically enlarged end portion of the second metal pipe. The second enlarged end portion is mated with the first enlarged end portion so that the first and second metal pipes are aligned. A collar member of metal is concentrically disposed within the mated first and second enlarged end portions. The collar member is formed, around an axially middle portion thereof, with an annular ridge which entirely and intimately contacts with inner surfaces of the mated first and second enlarged end portions. A fastening ring of metal is concentrically disposed about the mated first and second enlarged end portions. The fastening ring is so shaped as to have a concave inner surface which intimately and entirely contacts with rounded outer surfaces of the mated first and second enlarged end portions.

    摘要翻译： 为了联接第一和第二金属管，提供了一种联接结构，其包括第一金属管的第一直径成角度的端部部分和第二金属管道的第二直径扩大的端部。 第二扩大端部与第一扩大端部配合，使得第一和第二金属管对齐。 金属的轴环构件同心地设置在配合的第一和第二扩大端部内。 环形构件围绕其轴向中间部分形成有与配合的第一和第二扩大端部的内表面完全紧密接触的环形脊。 金属的紧固环围绕配合的第一和第二扩大端部同心地设置。 紧固环的形状为具有与配合的第一和第二扩大端部的圆形外表面紧密且完全接触的凹形内表面。