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    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine
    1.
    发明公开
    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine 有权
    用于使用气体浓度传感器精确地控制在内燃发动机的空气 - 燃料比的方法和装置

    公开(公告)号：EP1022451A2

    公开(公告)日：2000-07-26

    申请号：EP00300139.3

    申请日：2000-01-11

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Sato, Yoshikuni ,  Ishida, Noboru ,  Ishikawa, Hideki ,  Oshima, Takafumi ,  Sato, Yasushi

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1459 ,  F02D41/0042 ,  F02D41/0045 ,  F02D41/144 ,  F02D41/2441 ,  F02D41/2474 ,  F02D2200/0614 ,  G01N2291/02809

    摘要： The present invention provides a method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine, featuring in that before the fuel-vaporized gas purged from the canister enters into the intake manifold whereat the sensor detects the gas concentration of the purged gas, the sensor is adjusted so as to adjust a zero point (or zero output level) of the sensor output.
    In step 100, a judgment is made as to whether the flow rate of air reaches a predetermined level. In step 110, processing for zero-point correction of the gas concentration sensor is performed. Specifically, in a state in which the purge valve 17 is closed, concentration of purge gas is measured by use of the gas concentration sensor 4, and a sensor output S1 at that time is obtained. Subsequently, the sensor output S1 is compared with a correct sensor output S0 in order to obtain a difference ΔS therebetween. Accordingly, during subsequent gas concentration measurement, a value S3 obtained through subtraction of the difference ΔS from an obtained sensor output S2 is used as a correct sensor output. In step 120, a supply amount of purge gas, i.e., a concentration of the purge gas to be supplied is obtained. In subsequent step 130, the purge valve 17 is driven in order to supply purge gas to the intake pipe 2 in a required amount (A%).

    摘要翻译： 本发明提供使用气体浓度传感器，用于精确地设置在控制内燃机的空气燃料比，具有在之前从罐吹扫燃料汽化气体进入进气歧管，在这里，传感器没有检测气体的方法和装置 吹扫气体的浓度，所述传感器被调整，以调整零点传感器输出的（或零输出电平）。 在步骤100中，判断作出是否空气的流速达到预定水平。 在步骤110中，执行用于气体浓度传感器的零点校正处理。 具体而言，在将净化阀17关闭的状态下，净化气体的浓度是通过使用气体浓度传感器4的测量，并且一个传感器的输出S1在没有时间被获得。 随后，传感器输出S1被以正确的传感器输出S0，以便获得存在之间的差DELTA标准相比较。 因此，随后的气体浓度测量过程中，一个值S3通过从获得的传感器输出S2被用作正确的传感器输出的差DELTA S的减法获得。 在步骤120中，吹扫气体，即的供给量，所供给的净化气体的浓度被获得。 之后的放气阀17，以供应吹扫气体到进气管2步骤130中，在一个所需的量（A％）驱动。

    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine
    2.
    发明公开
    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine 有权
    使用气体浓度传感器用于精确地控制内燃机的空气燃料比的方法和装置

    公开(公告)号：EP1022451A3

    公开(公告)日：2002-12-04

    申请号：EP00300139.3

    申请日：2000-01-11

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Sato, Yoshikuni ,  Ishida, Noboru ,  Ishikawa, Hideki ,  Oshima, Takafumi ,  Sato, Yasushi

    IPC分类号： F02D41/14 ,  F02D35/00 ,  G01N33/00

    CPC分类号： F02D41/1459 ,  F02D41/0042 ,  F02D41/0045 ,  F02D41/144 ,  F02D41/2441 ,  F02D41/2474 ,  F02D2200/0614 ,  G01N2291/02809

    摘要： The present invention provides a method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine, featuring in that before the fuel-vaporized gas purged from the canister enters into the intake manifold whereat the sensor detects the gas concentration of the purged gas, the sensor is adjusted so as to adjust a zero point (or zero output level) of the sensor output. In step 100, a judgment is made as to whether the flow rate of air reaches a predetermined level. In step 110, processing for zero-point correction of the gas concentration sensor is performed. Specifically, in a state in which the purge valve 17 is closed, concentration of purge gas is measured by use of the gas concentration sensor 4, and a sensor output S1 at that time is obtained. Subsequently, the sensor output S1 is compared with a correct sensor output S0 in order to obtain a difference ΔS therebetween. Accordingly, during subsequent gas concentration measurement, a value S3 obtained through subtraction of the difference ΔS from an obtained sensor output S2 is used as a correct sensor output. In step 120, a supply amount of purge gas, i.e., a concentration of the purge gas to be supplied is obtained. In subsequent step 130, the purge valve 17 is driven in order to supply purge gas to the intake pipe 2 in a required amount (A%).

    Ceramic valve arrangement
    3.
    发明公开
    Ceramic valve arrangement 失效
    陶瓷阀安装

    公开(公告)号：EP0387922A3

    公开(公告)日：1990-11-22

    申请号：EP90108358.4

    申请日：1987-06-12

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Sato, Yasushi ,  Nagasaki, Shigeru ,  Taniguchi, Masato ,  Kagawa, Junichi ,  Kawamura, Mitsuyoshi

    IPC分类号： F01L3/02 ,  F01L3/10

    CPC分类号： F01L3/02 ,  F01L3/10 ,  F02F2001/008

    摘要： A ceramic valve supporting structure comprising in use for internal combustion engine; a ceramic valve (1) having an integral stem (1b), the upper portion of which is provided with a circular groove (2); a cotter (3) the outer surface of which is tapered, and formed by butting a pair of semi-cylindrical pieces, and having a lock projection (3a) placed into the groove (2) when secured concentrically to the outer surface of the stem, a cylindrical retainer (4) concentrically secured to the cotter surface of the cotter so as to support the valve (1) through the cotter (3); the retainer (4) being provided with the inner surface tapered in a direction so as to make the cotter (3) tightly engage with the outer surface of the stem (1b) by means of wedge effect against the tapered cotter (3) due to the urging force of a coil spring member (6) axially exerted to the retainer (4); and a stress relief means provided so as to avoid the predetermined portion of the cotter from locally engaging against the outer surface of the stem. Stress relief is provided by a bevelled portion (4c) at the end of the retainer (4) adjacent the valve head to provide a clearance between the retainer (4) and cotter (3) at the end of the cotter.

    Ceramic valve arrangement
    6.
    发明公开
    Ceramic valve arrangement 失效
    Anordnungfürkeramisches Ventil。

    公开(公告)号：EP0387922A2

    公开(公告)日：1990-09-19

    申请号：EP90108358.4

    申请日：1987-06-12

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Sato, Yasushi ,  Nagasaki, Shigeru ,  Taniguchi, Masato ,  Kagawa, Junichi ,  Kawamura, Mitsuyoshi

    IPC分类号： F01L3/02 ,  F01L3/10

    CPC分类号： F01L3/02 ,  F01L3/10 ,  F02F2001/008

    摘要： A ceramic valve supporting structure comprising in use for internal combustion engine; a ceramic valve (1) having an integral stem (1b), the upper portion of which is provided with a circular groove (2); a cotter (3) the outer surface of which is tapered, and formed by butting a pair of semi-cylindrical pieces, and having a lock projection (3a) placed into the groove (2) when secured concentrically to the outer surface of the stem, a cylindrical retainer (4) concentrically secured to the cotter surface of the cotter so as to support the valve (1) through the cotter (3); the retainer (4) being provided with the inner surface tapered in a direction so as to make the cotter (3) tightly engage with the outer surface of the stem (1b) by means of wedge effect against the tapered cotter (3) due to the urging force of a coil spring member (6) axially exerted to the retainer (4); and a stress relief means provided so as to avoid the predetermined portion of the cotter from locally engaging against the outer surface of the stem. Stress relief is provided by a bevelled portion (4c) at the end of the retainer (4) adjacent the valve head to provide a clearance between the retainer (4) and cotter (3) at the end of the cotter.

    摘要翻译： 一种用于内燃机的陶瓷阀支撑结构， 陶瓷阀（1），其具有一体的杆（1b），其上部设有圆形槽（2）; 其外表面是锥形的，并且通过对接一对半圆柱形件形成，并且当与所述杆的外表面同心地固定时，具有放置在所述槽（2）中的锁定突起（3a） 同心地固定在开口的开口表面上以便通过开口（3）支撑阀（1）的圆柱形保持器（4）; 所述保持器（4）具有沿着使所述开口（3）通过对所述锥形开口（3）的楔形作用与所述杆（1b）的外表面紧密接合的方向成锥形的所述内表面， 螺旋弹簧构件（6）的作用力轴向地施加到保持器（4）上; 并且设置有应力消除装置，以避免开口器的预定部分局部地接合在杆的外表面上。 应力释放由邻近阀头的保持器（4）的端部处的倾斜部分（4c）提供，以在保持架（4）和开口（3）之间在孔口端部提供间隙。