公开(公告)号：US06568281B1

公开(公告)日：2003-05-27

申请号：US09635897

申请日：2000-08-11

申请人： Yoshikuni Sato ,  Keigo Banno ,  Hideki Ishikawa ,  Noboru Ishida ,  Takafumi Oshima

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

IPC分类号： G01F166

CPC分类号： G01F1/668 ,  G01H5/00 ,  G01L11/06 ,  G01N29/024 ,  G01N29/38 ,  G01N29/4454 ,  G01N29/48 ,  G01N2291/0212 ,  G01N2291/0217 ,  G01N2291/02809 ,  G01N2291/02836 ,  G01N2291/02872 ,  G01N2291/101 ,  G01N2291/102

摘要： An ultrasonic-wave propagation time measuring method which enables determination of accurate propagation time, a gas-pressure measuring method, a gas-flow-rate measuring method, and a gas sensor. A reception wave which has been transmitted and received by an ultrasonic element 5 is shaped and integrated by an integration circuit 67 to obtain an integral value. A peak value of the integral value is held by a peak-hold circuit 39. As to detection of gas concentration, a resistance-voltage-division circuit 41 sets a reference value on the basis of the peak value, and a point in time when the integral value of the reception wave is judged by a comparator 43 to have reached the reference value is regarded as an arrival time. Subsequently, a gas concentration is detected on the basis of a period between the emission time and the arrival time. As to detection of gas pressure and flow rate, the gas pressure is detected on the basis of the peak value, and further, the gas flow rate is calculated on the basis of the gas pressure.

摘要翻译： 能够确定准确的传播时间的超声波传播时间测量方法，气体压力测量方法，气体流量测量方法和气体传感器。 由超声波元件5发送和接收的接收波被积分电路67整形并积分以获得积分值。 积分值的峰值由峰值保持电路39保持。关于气体浓度的检测，电阻分压电路41基于峰值设定基准值， 接收波的积分值由比较器43判定为已经达到基准值被认为是到达时间。 随后，基于发射时间和到达时间之间的周期来检测气体浓度。 关于气体压力和流量的检测，基于峰值检测气体压力，此外，基于气体压力计算气体流量。

公开(公告)号：US06418782B1

公开(公告)日：2002-07-16

申请号：US09480663

申请日：2000-01-11

申请人： Yoshikuni Sato ,  Noboru Ishida ,  Hideki Ishikawa ,  Takafumi Oshima ,  Yasushi Sato

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

IPC分类号： G01N2902

CPC分类号： G01N29/36 ,  G01N29/024 ,  G01N2291/011 ,  G01N2291/0215 ,  G01N2291/0258 ,  G01N2291/02809 ,  G01N2291/045

摘要： When a sensor has deteriorated, the propagation time T1′ of a first reflection wave becomes greater than the propagation time T1 of a first reflection wave as measured in a new sensor. If measurement of the concentration of a specific gas is based on the propagation time T1 of the first reflection wave as measured in the new sensor, gas concentration cannot be determined accurately. By contrast, a reflection wave other than the first reflection wave (for example, a second reflection wave) is merely reflected off the surface of the ultrasonic element and is not affected by the internal structure of the ultrasonic element. Therefore, even when the sensor is deteriorated, the propagation time T2, T2′ of the second reflection wave exhibits less variation and is less susceptible to deterioration of the sensor. Therefore, the concentration of a specific gas is determined on the basis of the propagation time of the second reflection wave, which is less susceptible to deterioration of the sensor, instead of the propagation time of the first reflection wave, which is more susceptible to deterioration of the sensor. Thus, gas concentration can be measured accurately.

摘要翻译： 当传感器恶化时，第一反射波的传播时间T1'变得大于在新传感器中测量的第一反射波的传播时间T1。 如果特定气体的浓度的测定是基于在新传感器中测定的第一反射波的传播时间T1，则不能准确地确定气体浓度。 相反，除了第一反射波（例如，第二反射波）之外的反射波仅仅从超声波元件的表面反射，并且不受超声波元件的内部结构的影响。 因此，即使在传感器劣化的情况下，第二反射波的传播时间T2'T2'变化较小，也不易受传感器劣化的影响。 因此，特定气体的浓度基于不易受传感器劣化的第二反射波的传播时间而不是更容易劣化的第一反射波的传播时间而确定 的传感器。 因此，可以准确测量气体浓度。

公开(公告)号：US06224727B1

公开(公告)日：2001-05-01

申请号：US09050079

申请日：1998-03-30

申请人： Shigeru Miyata ,  Masashi Ando ,  Hiroshi Inagaki ,  Noboru Ishida ,  Takafumi Oshima

发明人： Shigeru Miyata ,  Masashi Ando ,  Hiroshi Inagaki ,  Noboru Ishida ,  Takafumi Oshima

IPC分类号： G01N2726

CPC分类号： G01N27/417 ,  G01N27/4074

摘要： An NOx sensor capable of accurately determining the concentration of NOx contained in a gas to be analyzed (measurement gas) using a simple circuit. The NOx sensor includes a first measurement space and a second measurement space. The first measurement space communicates with the measurement gas via a first diffusion controlling layer, and the second measurement space communicates with the first measurement space via a second diffusion controlling layer. A first pumping current IP1 is controlled such that an output from a Vs cell is used as a reference voltage VC0 to control the amount of oxygen flowing into the second measurement space at a constant level. A constant voltage is applied to the second pumping cell so as to decompose the NOx component of the measurement gas contained in the second measurement space, and to pump out the resulting oxygen from the second measurement space. Accordingly, the concentration of NOx contained in the measurement gas can be obtained from second pumping current IP2. The electrode of the Vs cell located on the side of the first measurement space is formed around the periphery of or on a portion of the diffusion controlling layer of the Vs cell. As a result, the amount of oxygen flowing from the first measurement space into the second measurement space can be accurately determined by means of the Vs cell. Also, the NOx concentration can be accurately determined without the need for compensation.

摘要翻译： 一种能够使用简单电路精确地测定待分析气体（测定气体）中所含的NOx的浓度的NOx传感器。 NOx传感器包括第一测量空间和第二测量空间。 第一测量空间经由第一扩散控制层与测量气体连通，第二测量空间经由第二扩散控制层与第一测量空间连通。 控制第一泵浦电流IP1，使得来自Vs电池的输出用作参考电压VC0，以控制以恒定水平流入第二测量空间的氧气量。 将恒定电压施加到第二泵浦单元，以分解包含在第二测量空间中的测量气体的NOx分量，并从第二测量空间泵出所得氧。 因此，可以从第二泵浦电流IP2获得包含在测量气体中的NOx的浓度。 位于第一测量空间一侧的Vs单元的电极形成在Vs单元的扩散控制层的一部分周围。 结果，可以通过Vs单元精确地确定从第一测量空间流入第二测量空间的氧气量。 此外，可以精确地确定NOx浓度，而不需要补偿。

公开(公告)号：US5210457A

公开(公告)日：1993-05-11

申请号：US714270

申请日：1991-06-12

申请人： Takafumi Oshima ,  Minoru Ando

发明人： Takafumi Oshima ,  Minoru Ando

IPC分类号： H01T13/32 ,  H01T21/02

CPC分类号： H01T21/02 ,  H01T13/32

摘要： In an outer electrode, a rear end of which is securely connected to a metallic shell of a spark plug by means of welding to form a spark gap between a front end of the outer electrode and a firing tip of a center electrode which is concentrically placed within the metallic shell through an insulator, a middle core which is provided which is made of copper, and the middle core is clad by a heat and spark-erosion resistant metal. A centermost core is clad by the middle core. The centermost core is made of a similar metal to the metallic shell, and rear end of the centermost core is welded to the metallic shell so as to reinforce a welding portion between the metallic shell and the outer electrode.

公开(公告)号：US5204579A

公开(公告)日：1993-04-20

申请号：US399704

申请日：1989-08-25

申请人： Takafumi Oshima ,  Shigeyasu Yamada ,  Kazuhiko Kozuka

发明人： Takafumi Oshima ,  Shigeyasu Yamada ,  Kazuhiko Kozuka

IPC分类号： C04B35/111 ,  C04B35/581 ,  C04B35/584 ,  H01T13/38 ,  H01T21/02

CPC分类号： H01T21/02 ,  C04B35/111 ,  C04B35/581 ,  C04B35/584 ,  H01T13/38 ,  F02B2275/18

摘要： A ceramic insulator structure for use in a spark plug is manufactured by mixing granular or powdery particles of AlN, Si3N.sub.4 or Al.sub.2 O.sub.3 with an organic binder and an auxiliary sintering agent, the average spherical diameter of the particles making up the resulting ceramic mixture being in the range 20-100 microns. The ceramic mixture is then pressed in a mold into a desired shape and sintered at a temperature of 1600.degree.-2000.degree. C.

公开(公告)号：US06886412B2

公开(公告)日：2005-05-03

申请号：US10076423

申请日：2002-02-19

申请人： Keigo Banno ,  Hideki Ishikawa ,  Yoshikuni Sato ,  Noboru Ishida ,  Takafumi Oshima

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

IPC分类号： G01N29/02 ,  F02D35/00 ,  F02D45/00 ,  G01H5/00 ,  G01N29/00 ,  G01N29/024 ,  G01N29/38 ,  G01N29/40 ,  G01F1/66

CPC分类号： G01N29/40 ,  G01N29/024 ,  G01N29/38 ,  G01N2291/0217 ,  G01N2291/02809

摘要： An ultrasonic-wave propagation-time measuring method and gas concentration sensor are disclosed in which a reception wave which has been transmitted and received by an ultrasonic element 5 is subjected to full-wave rectification in order to obtain a full-wave-rectified wave, which is then integrated by an integration circuit 37 to obtain an integral value. A peak value of the integral value is held by a peak-hold circuit 39. As to detection of gas concentration, a threshold-level calculation section 21e sets a reference value on the basis of the peak value, and a point in time when the amplitude of a reception wave having undergone full-wave rectification is judged by a comparator 43 to have reached the reference value is regarded as an arrival time. Subsequently, a gas concentration is determined on the basis of a period between the emission time and the arrival time.

摘要翻译： 公开了一种超声波传播时间测量方法和气体浓度传感器，其中由超声波元件5发送和接收的接收波被进行全波整流，以获得全波整流波， 然后将其由积分电路37积分以获得积分值。 积分值的峰值由峰值保持电路39保持。 关于气体浓度的检测，阈值电平计算部21e基于峰值设定基准值，并且通过比较器判定经过全波整流的接收波的振幅的时间点 43已达到参考值被视为到达时间。 随后，基于发射时间和到达时间之间的周期来确定气体浓度。

公开(公告)号：US06743352B2

公开(公告)日：2004-06-01

申请号：US10066684

申请日：2002-02-06

申请人： Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Takafumi Oshima ,  Norihiko Nadanami ,  Takaki Otsuka ,  Yoshikuni Sato ,  Tatsuo Okumura ,  Yasuhisa Kuzuya

发明人： Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Takafumi Oshima ,  Norihiko Nadanami ,  Takaki Otsuka ,  Yoshikuni Sato ,  Tatsuo Okumura ,  Yasuhisa Kuzuya

IPC分类号： G01N27407

CPC分类号： F01N3/2066 ,  F01N3/0842 ,  F01N3/0871 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/03 ,  F02D41/146 ,  F02D41/2474 ,  F02D41/28 ,  G01N27/4175 ,  G01N27/419 ,  G01N33/0037 ,  Y02A50/2344 ,  Y02A50/245 ,  Y02T10/24 ,  Y02T10/47

摘要： A method for detecting the concentration of a specific gas (NOx) in an engine exhaust gas using a gas sensor and a process of correcting the gas sensor. According to the correcting process, the amount of moisture in the exhaust gas is estimated, then a a gas concentration detection signal output by the gas sensor on the basis of an estimated amount of moisture is corrected. Finally, the effect of the amount of moisture in the exhaust gas is removed or reduced from the detected value of gas concentration.

摘要翻译： 一种使用气体传感器检测发动机排气中的特定气体（NOx）的浓度的方法和校正气体传感器的处理。 根据校正处理，对废气中的水分量进行推定，校正气体传感器基于估计的水分量输出的气体浓度检测信号。最后，对湿度的影响 废气从气体浓度的检测值中除去或减少。

公开(公告)号：US06474177B2

公开(公告)日：2002-11-05

申请号：US09802873

申请日：2001-03-12

申请人： Shunsuke Maeda ,  Yoshihiko Kohmura ,  Takio Kojima ,  Yasuhisa Kuzuya ,  Masanori Suda ,  Takafumi Oshima

发明人： Shunsuke Maeda ,  Yoshihiko Kohmura ,  Takio Kojima ,  Yasuhisa Kuzuya ,  Masanori Suda ,  Takafumi Oshima

IPC分类号： G01F144

CPC分类号： G01F5/00 ,  G01F1/44 ,  G01F1/692

摘要： A flow rate and flow velocity measurement device has a divided flow pipe (332) which is attached so as to be orthogonal to an intake pipe (1) of an engine, and into which a flow in the intake pipe (1) is introduced, an inlet plate (334) which extends in a direction orthogonal to a flow direction in the intake pipe (1) and forms a U-shape form pipe passage in the divided flow pipe (332) and a detection element (331) which is disposed so as to be exposed to a flow in the divided flow pipe (332) outside the intake pipe (1) and detects a flow rate and a flow velocity, wherein one end of the inlet plate (334) protrudes into the intake pipe (1) while passing a top opening of the divided flow pipe (332), and the divided flow pipe (332) has a flow passage structure symmetrical with the detection element (331) being made a center, so that an equivalent detection element (331) output is obtained in regard to both cases in which a fluid flows through the intake pipe (1) in a normal direction and a reverse direction.

摘要翻译： 流量和流速测量装置具有与发动机的进气管（1）正交地附接的分流管（332），并且进气管（1）中的流动被引入其中， 入口板（334），其在与所述进气管（1）中的流动方向正交的方向上延伸并在所述分流管（332）中形成U形管道通道，并且所述检测元件（331）设置在所述入口板 以便暴露于进气管（1）外部的分流管（332）中的流动，并且检测流量和流速，其中入口板（334）的一端突出到进气管（1） ），同时通过分流管（332）的顶部开口，并且分流管（332）具有与检测元件（331）为中心对称的流路结构，使得等效的检测元件（331） 关于流体沿正常方向流过进气管（1）的两种情况都获得输出 反方向。

公开(公告)号：US06375828B2

公开(公告)日：2002-04-23

申请号：US09045938

申请日：1998-03-23

申请人： Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Takafumi Oshima ,  Norihiko Nadanami ,  Takaki Otsuka ,  Yoshikuni Sato ,  Tatsuo Okumura ,  Yasuhisa Kuzuya

发明人： Masashi Ando ,  Noboru Ishida ,  Satoshi Sugaya ,  Takafumi Oshima ,  Norihiko Nadanami ,  Takaki Otsuka ,  Yoshikuni Sato ,  Tatsuo Okumura ,  Yasuhisa Kuzuya

IPC分类号： G01N27407

CPC分类号： F01N3/2066 ,  F01N3/0842 ,  F01N3/0871 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/03 ,  F02D41/146 ,  F02D41/2474 ,  F02D41/28 ,  G01N27/4175 ,  G01N27/419 ,  G01N33/0037 ,  Y02A50/2344 ,  Y02A50/245 ,  Y02T10/24 ,  Y02T10/47

摘要： A nitrogen oxide concentration detector has a first measurement chamber 2 into which is introduced a measurement gas via a first diffusion resistance 1; an oxygen concentration detection electrode 7a for measuring the oxygen concentration in the measurement gas in said first measurement chamber 1; a first oxygen ion pump cell 6 for pumping out oxygen in the measurement gas from said first measurement chamber 2 based on the potential of said oxygen concentration detection electrode 7a; a second measurement chamber 8 into which the gas is introduced from said first measurement chamber 2 via a second diffusion resistance 3; and a second oxygen ion pump cell 8 having a pair of electrodes 8a,8b across which a voltage is applied to decompose NOx in the second measurement chamber 4 to pump out dissociated oxygen to cause a circuit Ip2 corresponding to the NOx concentration to flow in the second oxygen ion pump cell 8. Variation of NOx concentration is a function of variation of Ip2. The concentration obtained based on the Ip2 is corrected responsive to the oxygen concentration in the measurement gas. Particularly, a coefficient of the variation of the Ip2, gain, in said function is corrected responsive to the oxygen concentration in the measurement gas.

摘要翻译： 氮氧化物浓度检测器具有通过第一扩散电阻1引入测量气体的第一测量室2; 用于测量所述第一测量室1中的测量气体中的氧浓度的氧浓度检测电极7a; 第一氧离子泵电池6，用于根据所述氧浓度检测电极7a的电位从所述第一测量室2抽出测量气体中的氧; 第二测量室8，通过第二扩散电阻3从所述第一测量室2引入气体; 以及第二氧离子泵电池8，具有一对电极8a，8b，施加电压以分解第二测量室4中的NOx，以排出解离的氧，使得与NOx浓度对应的电路Ip2流入 第二氧离子泵电池8. NOx浓度的变化是Ip2变化的函数。 响应于测量气体中的氧浓度校正基于Ip2获得的浓度。 特别地，响应于测量气体中的氧浓度来校正所述功能中的Ip2增益的变化系数。

公开(公告)号：US6084354A

公开(公告)日：2000-07-04

申请号：US35356

申请日：1998-03-05

申请人： Yoshihiko Kohmura ,  Takafumi Oshima ,  Toshiharu Ito ,  Noriyasu Sugimoto ,  Minoru Yasuda

发明人： Yoshihiko Kohmura ,  Takafumi Oshima ,  Toshiharu Ito ,  Noriyasu Sugimoto ,  Minoru Yasuda

IPC分类号： H01F27/40 ,  H01J7/44

CPC分类号： H01F27/40

摘要： In the vehicle-lamp lighting-on device, a body case has a connection opening formed in the front end thereof. A lighting-on transformer is disposed within the body case. The transformer includes a core housing with an iron core and a coil bobbin with a secondary coil wound thereon. The connection opening of the body case is shielded at the front end of the lighting-on transformer. A socket for receiving a vehicle discharge lamp includes a high-voltage terminal and low-voltage terminals. When the socket is inserted into the connection opening of the body case, the high-voltage terminal of the socket is connected to the high-voltage side terminal of the lighting-on transformer, and the low-voltage terminals are connected to the low-voltage side terminals. The connection opening of the body case is shielded by the front surface (made of insulating material) of the lighting-on transformer. The vehicle-lamp lighting-on device can be completed by merely attaching the socket to the assembly of the lighting-on transformer and the body case. Therefore, the assembly of the device is easy. Further, the height of the vehicle-lamp lighting-on device is reduced overall since there is no need to form a wall corresponding to the shielding member in the body case.

摘要翻译： 在车灯点亮装置中，主体壳体具有形成在其前端的连接开口。 一个点灯变压器设置在主体外壳内。 变压器包括具有铁芯的芯壳体和缠绕有次级线圈的线圈架。 主体外壳的连接开口在点灯变压器的前端被屏蔽。 用于接收车辆放电灯的插座包括高压端子和低压端子。 当插座插入主体外壳的连接开口时，插座的高压端子连接到点灯变压器的高压侧端子，低压端子连接到低压端子， 电压侧端子。 主体外壳的连接开口由点灯变压器的前表面（由绝缘材料制成）屏蔽。 车灯点亮装置可以通过将插座附接到照明变压器和主体壳体的组件来完成。 因此，装置的组装是容易的。 此外，由于不需要在主体壳体中形成与屏蔽部件对应的壁，所以整体上降低了车灯点亮装置的高度。