公开(公告)号：US5335493A

公开(公告)日：1994-08-09

申请号：US645975

申请日：1991-01-23

申请人： Masaaki Uchida ,  Mikio Matsumoto

发明人： Masaaki Uchida ,  Mikio Matsumoto

IPC分类号： F02D41/14 ,  F01N3/20

CPC分类号： F02D41/1441 ,  F02D41/2454 ,  F02D41/2487

摘要： A learning or updating function which corrects the feedback control correction factor is included in a dual O.sub.2 sensor type control system. Correction related data which is used to modify in response to the output of an upstream sensor or sensor section, is recorded at memory addresses which corresponding to the sub-sections of an engine operation map. When the output of the upstream sensor changes, a sub-region in which the engine operation fell a time .tau. earlier or in which the engine operation has continuously fallen for the time .tau., is selected and the correction related data which is recorded at the corresponding address, read out, updated based in the output of the second sensor or sensor section and re-recorded at the same address.

摘要翻译： 校正反馈控制校正因子的学习或更新功能包括在双O2传感器类型控制系统中。 用于响应于上游传感器或传感器部分的输出而修改的校正相关数据被记录在对应于发动机操作图的子部分的存储器地址处。 当上游传感器的输出发生变化时，选择发动机操作早一段时间缩短的时间段或其中发动机运转连续下降的时间τ的子区域，并且将相应的校正相关数据记录在相应的位置 地址，读出，基于第二传感器或传感器部分的输出更新，并在同一地址重新记录。

公开(公告)号：US5327876A

公开(公告)日：1994-07-12

申请号：US961287

申请日：1992-10-15

申请人： Masaaki Uchida

发明人： Masaaki Uchida

IPC分类号： F02D41/14 ,  F02D41/22

CPC分类号： F02D41/1495 ,  F02D41/1479

摘要： This invention relates to an air-fuel ratio control system for an engine which can continuously detect the air-fuel ratio of the air-fuel mixture supplied to the engine using an air-fuel ratio sensor within a wide range including the theoretical air-fuel ratio, and can then, based on the sensor output, perform feedback correction of the air-fuel ratio to the theoretical air-fuel ratio or to another air-fuel ratio. The deterioration of the air-fuel ratio sensor is judged based on the difference between the feedback correction coefficient when feedback control is performed to the theoretical air-fuel ratio, and the feedback correction coefficient when it is performed to another air-fuel ratio. Deterioration of the sensor is thereby detected completely separate from scatter or deterioration of performance of the fuel injector or other components.

摘要翻译： 本发明涉及一种用于发动机的空燃比控制系统，其可以在包括理论空气燃料的宽范围内使用空燃比传感器连续地检测供应给发动机的空气燃料混合物的空燃比 然后可以根据传感器输出，对空燃比进行理论空燃比的反馈校正，或进行其他空燃比的反馈校正。 基于当执行反馈控制的反馈校正系数与理论空燃比之间的差异以及当对另一空燃比执行的反馈校正系数的差异来判断空燃比传感器的劣化。 因此，传感器的恶化完全与燃料喷射器或其他部件的性能的散射或劣化完全分离。

公开(公告)号：US4924836A

公开(公告)日：1990-05-15

申请号：US194936

申请日：1988-05-17

申请人： Masaaki Uchida ,  Hideki Uema ,  Hiromichi Miwa ,  Yoshihisa Kawamura

发明人： Masaaki Uchida ,  Hideki Uema ,  Hiromichi Miwa ,  Yoshihisa Kawamura

IPC分类号： F02D41/00 ,  F02D41/14 ,  F02D45/00

CPC分类号： F02D41/2441 ,  F02D41/2454 ,  F02D41/2448

摘要： An air/fuel ratio control system detects transition of air/fuel ratio changing between rich and lean for checking if updating condition is satisfied. Updating value is derived based on a feedback correction value which is derived for adjusting air/fuel ratio toward a stoichiometric value. With the updating value thus derived, one of a plurality of learnt correction value which are set with respect to various engine driving range.

公开(公告)号：US4873641A

公开(公告)日：1989-10-10

申请号：US68942

申请日：1987-07-01

申请人： Hatsuo Nagaishi ,  Yasuo Seimiya ,  Hideyuki Tamura ,  Hiromichi Miwa ,  Hiroshi Sanbuichi ,  Masaaki Uchida ,  Toshio Takahata

发明人： Hatsuo Nagaishi ,  Yasuo Seimiya ,  Hideyuki Tamura ,  Hiromichi Miwa ,  Hiroshi Sanbuichi ,  Masaaki Uchida ,  Toshio Takahata

IPC分类号： F02D41/04 ,  F02D41/18 ,  F02D41/24

CPC分类号： F02D41/18 ,  F02D41/045 ,  F02D41/2496

摘要： The throttle valve position of an engine is sensed and the effective cross sectional area of the induction passage is determined via table look-up. The table is recorded in terms of three parameters. The value thus derived is divided by the engine speed of alternatively a product of the engine speed and the engine displacement. A basic air induction quantity is then determined via table look-up and is subsequently modified using a correction coefficient to allow for the effect of engine speed on the same. The effect of injector position (viz., multi-point injection/single point injection) and/or the provision of a swirl control valve can be additionally taken into consideration via the use of suitable algorithms or additional two and three parameter system tables. If an idle control by-pass passage is provided, the effect of the opening degree is considered when determining the effective cross-section of the induction passage.

摘要翻译： 检测发动机的节气门位置，并通过表查找来确定感应通道的有效截面面积。 该表以三个参数记录。 这样得到的值除以发动机转速和发动机排量的乘积的发动机转速。 然后通过表查找确定基本的空气感应量，并且随后使用校正系数进行修改以允许发动机转速对其的影响。 可以通过使用合适的算法或附加的两个和三个参数系统表来额外考虑喷射器位置（即多点喷射/单点喷射）和/或提供旋流控制阀的效果。 如果提供怠速控制旁通通道，则在确定进气通道的有效截面时考虑开度的影响。

公开(公告)号：US4786476A

公开(公告)日：1988-11-22

申请号：US886080

申请日：1986-07-16

申请人： Fumio Munakata ,  Masayuki Touda ,  Masaaki Uchida ,  Fumio Yukawa

发明人： Fumio Munakata ,  Masayuki Touda ,  Masaaki Uchida ,  Fumio Yukawa

IPC分类号： G01N27/12 ,  G01N27/46

CPC分类号： G01N27/12

摘要： The invention relates to a gas sensor element which utilizes a change in the electric resistance of a porously fired TiO.sub.2 layer. To improve the speed of response of the gas sensor element, and also to strengthen the adhesion of the fired TiO.sub.2 layer to a ceramic substrate, at least one kind of metal oxide which hardly undergoes solid phase reaction with TiO.sub.2 and serves as a sintering suppressing agent, such as Er.sub.2 O.sub.3, Sm.sub.2 O.sub.3 and/or In.sub.2 O.sub.3, is added to TiO.sub.2 in advance of firing. The speed of response is further enhanced by the addition of at least one kind of noble metal such as Pt and/or Rh to TiO.sub.2 together with the sintering suppressing oxide(s).

摘要翻译： 本发明涉及一种气体传感器元件，其利用烧结TiO 2层的电阻的变化。 为了提高气体传感器元件的响应速度，并且还增强了烧结的TiO 2层与陶瓷基板的粘附性，至少一种与TiO 2几乎不发生固相反应并用作烧结抑制剂的金属氧化物 ，例如Er 2 O 3，Sm 2 O 3和/或In 2 O 3。 与烧结抑制氧化物一起添加至少一种贵金属如Pt和/或Rh至TiO 2，进一步提高了响应速度。

公开(公告)号：US4302312A

公开(公告)日：1981-11-24

申请号：US172227

申请日：1980-07-25

申请人： Shigeo Ishitani ,  Shinji Kimura ,  Hiroshi Takao ,  Masaaki Uchida

发明人： Shigeo Ishitani ,  Shinji Kimura ,  Hiroshi Takao ,  Masaaki Uchida

IPC分类号： F02B1/04 ,  F02D35/00 ,  F02D41/14 ,  F02D41/34 ,  F02P5/15 ,  F02P5/152 ,  G01N27/406 ,  G01N27/407 ,  G01N27/409 ,  G01N27/413 ,  G01N27/417 ,  G01N27/58

CPC分类号： G01N27/4071 ,  F02D41/1476 ,  F02D41/1479 ,  G01N27/4065 ,  G01N27/417 ,  F02B1/04

摘要： A device comprising an oxygen-sensitive element to be disposed in combustion gas exhausted from a combustor to detect deviation of actual air/fuel mixing ratio of a mixture supplied to the combustor from a stoichiometric ratio. The element is a combination of two oxygen concentration cells each having a solid electrolyte layer, a measurement electrode layer formed on one side of the electrolyte layer and a reference electrode layer formed on the opposite side and covered with a shield layer. The device includes DC power supply means for forcing a current to flow through the solid electrolyte layer of each cell thereby to cause migration of oxygen ions therethrough, from the measurement electrode to the reference electrode in one cell and reversely in the other cell, and a circuit to make a comparison between first and second output voltages respectively developed by the first and second cells to examine which one of these two output voltages is higher than the other and produce a control signal according to the result of the comparison. The signal-producing function is not influenced by the temperature of the element so that a correct control signal can be produced even when the element is not yet sufficiently heated.

摘要翻译： 一种装置，其特征在于，设置在从燃烧器排出的燃烧气体中的氧敏感元件，以从化学计量比检测供给燃烧器的混合物的实际空气/燃料混合比的偏差。 元素是两个氧浓度电池的组合，每个氧浓度电池各自具有固体电解质层，在电解质层的一侧上形成的测量电极层和形成在相对侧并被屏蔽层覆盖的参考电极层。 该装置包括用于迫使电流流过每个电池的固体电解质层的直流电源装置，从而使氧离子从一个电池中的测量电极迁移到参考电极，并在另一个电池中相反地移动， 电路，以分别由第一和第二单元开发的第一和第二输出电压进行比较，以检查这两个输出电压中的哪一个高于另一个，并根据比较结果产生控制信号。 信号产生功能不受元件温度的影响，使得即使元件尚未充分加热也可以产生正确的控制信号。

公开(公告)号：US4182297A

公开(公告)日：1980-01-08

申请号：US865998

申请日：1977-12-30

申请人： Yasuo Ikenoya ,  Masaaki Uchida

发明人： Yasuo Ikenoya ,  Masaaki Uchida

IPC分类号： F02B75/02 ,  F02B77/08 ,  F02F1/30 ,  F02M3/09 ,  F02M7/28 ,  F02M23/04 ,  F02B33/04

CPC分类号： F02B77/08 ,  F02F1/30 ,  F02M3/09 ,  F02M7/28 ,  F02B2075/025 ,  Y10T137/7749

摘要： A two-cycle air-cooled engine has a carburetor with a throttle valve operated by a manual control member. A heat sensitive valve mounted on the engine cylinder head closes to cut off a supplementary air supply to the induction passageway and thereby richen the air-fuel mixture to prevent seizure upon overheating. When the manual control member is in position corresponding to idling of the engine, the member actuates means which introduce additional air into the induction passageway leading to the engine, to lean the air-fuel mixture.

摘要翻译： 双循环风冷发动机具有带有由手动控制构件操作的节流阀的化油器。 安装在发动机气缸盖上的热敏阀关闭，以切断对进气通道的补充空气供给，从而使空气 - 燃料混合物发泡，以防过热发生。 当手动控制构件处于对应于发动机空转的位置时，构件致动装置，其将额外的空气引入通向发动机的进气通道，以使空气 - 燃料混合物变稀。