公开(公告)号：US20090037079A1

公开(公告)日：2009-02-05

申请号：US12213064

申请日：2008-06-13

申请人： Yusuke Suzuki ,  Yasushi Iwazaki ,  Toru Kidokoro ,  Hiroshi Sawada ,  Fumihiko Nakamura ,  Keiichiro Aoki

发明人： Yusuke Suzuki ,  Yasushi Iwazaki ,  Toru Kidokoro ,  Hiroshi Sawada ,  Fumihiko Nakamura ,  Keiichiro Aoki

IPC分类号： F02D41/00

CPC分类号： F02D41/1495 ,  F02D41/008 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1498 ,  F02D2041/147

摘要： When an internal combustion engine including a plurality of cylinders is operating steadily, an index value relating to an actual hydrogen content in exhaust gas downstream of a portion where exhaust passages from the cylinders merge, and upstream of a catalyst is detected. When an index value relating to the actual hydrogen content in the exhaust gas is larger than a determination index value relating to a hydrogen content corresponding to a permissible limit of air-fuel ratio variation, it is determined that there is abnormal air-fuel ratio variation between the cylinders.

公开(公告)号：US20080028829A1

公开(公告)日：2008-02-07

申请号：US11630863

申请日：2005-06-29

申请人： Hiroshi Sawada ,  Daisuke Shibata

发明人： Hiroshi Sawada ,  Daisuke Shibata

IPC分类号： G01M15/10

CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N13/0097 ,  F01N2550/00 ,  F01N2560/02 ,  F01N2610/03 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/1495

摘要： In a compression ignition internal combustion engine provided with an NOx storage-reduction catalyst on an exhaust system, when the air fuel ratio of the exhaust gas being in a lean state is controlled to a rich state, a response time (ResS) from a time point an air fuel ratio sensor detects a first air fuel ratio (AF1), which is leaner than a stoichiometric air fuel ratio (AFS), to a time point the air fuel ratio sensor detects a second air fuel ratio (AF2), which is equal to or leaner than the stoichiometric air fuel ratio (AFS) and richer than the first air fuel ratio (AF1). When the response time (ResS) exceeds a stoichiometric air fuel ratio shift reference time (StdS), a determination is made that the air fuel ratio sensor is degraded.

摘要翻译： 在排气系统中设有NOx吸留还原催化剂的压缩点火式内燃机中，当将处于稀薄状态的排气的空燃比控制为浓状态时，从时间起响应时间（ResS） 指出空燃比传感器将空燃比传感器检测到第二空气燃料比（AF2）的时间点检测为比化学计量空燃比（AFS）更稀的第一空燃比（AF 1） 其等于或者比理论空燃比（AFS）更稀，并且比第一空气燃料比（AF 1）更浓。 当响应时间（ResS）超过理论空燃比偏移基准时间（StdS）时，确定空燃比传感器劣化。

公开(公告)号：US07198952B2

公开(公告)日：2007-04-03

申请号：US10193900

申请日：2002-07-15

申请人： Takahiro Uchida ,  Hiroshi Sawada ,  Toshinari Nagai ,  Akihiro Katayama ,  Yasuhiro Kuze ,  Naoto Kato

发明人： Takahiro Uchida ,  Hiroshi Sawada ,  Toshinari Nagai ,  Akihiro Katayama ,  Yasuhiro Kuze ,  Naoto Kato

IPC分类号： G01N31/10 ,  G01N33/22 ,  F01N3/18 ,  F01N3/20 ,  F01N3/22

CPC分类号： F01N11/007 ,  B01D53/9495 ,  F01N2550/02 ,  F02D41/0295 ,  F02D41/1408 ,  F02D41/22 ,  F02D2200/0814 ,  F02D2200/0816 ,  Y02T10/40 ,  Y02T10/47 ,  Y10T436/20 ,  Y10T436/208339 ,  Y10T436/25875

摘要： An upstream side catalyst and a downstream side catalyst are disposed in an exhaust passage. A first oxygen sensor is disposed between these two catalysts and a second oxygen sensor is disposed downstream of the downstream side catalyst. The air-fuel ratio is forcibly oscillated and the oxygen storage capacity of the upstream side catalyst is detected. Deterioration of the upstream side catalyst is then detected based on whether this oxygen storage capacity is larger than a predetermined value. The forced oscillation of the air-fuel ratio is performed only when the oxygen storage state of the downstream side catalyst is appropriate.

摘要翻译： 上游侧催化剂和下游侧催化剂设置在排气通道中。 第一氧传感器设置在这两个催化剂之间，第二氧传感器设置在下游侧催化剂的下游。 空燃比被强制振荡，并检测上游侧催化剂的储氧能力。 然后基于该储氧容量是否大于预定值来检测上游侧催化剂的劣化。 仅当下游侧催化剂的储氧状态适当时才进行空燃比的强制振荡。

公开(公告)号：US20060277971A1

公开(公告)日：2006-12-14

申请号：US11448794

申请日：2006-06-08

申请人： Kenji Tashiro ,  Yasushi Iwazaki ,  Masanobu Kanamaru ,  Hiroshi Sawada ,  Masaya Kawaji ,  Takashi Matsui

发明人： Kenji Tashiro ,  Yasushi Iwazaki ,  Masanobu Kanamaru ,  Hiroshi Sawada ,  Masaya Kawaji ,  Takashi Matsui

IPC分类号： G01N33/00

CPC分类号： G01N27/4065

摘要： An air-fuel ratio sensor that outputs a sensor signal used for the feedback control of an air-fuel ratio is provided. It is determined whether an element crack is present by applying a reverse voltage to the air-fuel ratio sensor. The value of the sensor signal output from the air-fuel ratio sensor is corrected during a time period “A”. The time period “A” consists of a reverse-voltage application time period in which the reverse voltage is applied, and a return time period “T” after application of the reverse voltage ends. The return time period “T” is set based on sensor impedance correlated with the internal resistance of the air-fuel ratio sensor. The return time period “T” decreases as the sensor impedance decreases.

摘要翻译： 提供输出用于空燃比的反馈控制的传感器信号的空燃比传感器。 通过向空燃比传感器施加反向电压来确定是否存在元件裂纹。 在空燃比传感器输出的传感器信号的值在时间段“A”期间被校正。 时间段“A”包括施加反向电压的反向电压施加时间段，反向电压施加后的返回时间段“T”结束。 基于与空燃比传感器的内阻相关的传感器阻抗来设定返回时间段“T”。 返回时间段“T”随着传感器阻抗的减小而减小。

公开(公告)号：US07075827B2

公开(公告)日：2006-07-11

申请号：US09754632

申请日：2001-01-04

申请人： Kazuo Aoyama ,  Hiroshi Sawada ,  Akira Nagoya ,  Kazuo Nakajima ,  Tadashi Shibata

发明人： Kazuo Aoyama ,  Hiroshi Sawada ,  Akira Nagoya ,  Kazuo Nakajima ,  Tadashi Shibata

IPC分类号： G11C16/04

CPC分类号： G11C27/005 ,  G06F15/7867 ,  G06N3/0635 ,  H03K5/133 ,  H03K19/08 ,  H03K19/0813 ,  H03K19/17736 ,  H03K19/17748 ,  H03K19/1776 ,  H03K19/1778 ,  H03K2005/00156

摘要： A function reconfigurable semiconductor device is provided. The function reconfigurable semiconductor device includes a plurality of function cells, each of the function cells being a basic unit which realizes a function; each of the function cells including a plurality of threshold elements; each of the threshold elements including means which stores a threshold value; and wherein a function which is realized by the function cell is determined by determining the threshold value in each of the threshold elements. In addition, the semiconductor device includes a nonvolatile memory which stores data for realizing the function in the function cells.

公开(公告)号：US06673619B2

公开(公告)日：2004-01-06

申请号：US09863446

申请日：2001-05-24

申请人： Hiroshi Sawada

发明人： Hiroshi Sawada

IPC分类号： G01N3110

CPC分类号： F01N11/007 ,  F01N2550/02 ,  Y02T10/47 ,  Y10T436/208339 ,  Y10T436/25875

摘要： A catalyst deterioration detecting device of the invention has exhaust emission purifying catalyst on an exhaust passage of an internal combustion engine and air-fuel ratio sensors provided upstream and downstream of the exhaust emission purifying catalyst, respectively, and detects the deterioration of the exhaust emission purifying catalyst based on the outputs of the air-fuel ratio sensors. An index characteristic value of catalyst deterioration is calculated from the outputs of the air-fuel ratio sensors, a time-lapse changing ratio of the calculated index characteristic value of catalyst deterioration is calculated, and the deterioration of the exhaust emission purifying catalyst is determined based on the calculated time-lapse changing ratio.

摘要翻译： 本发明的催化剂劣化检测装置在排气净化催化剂的上游和下游分别设置有内燃机和空燃比传感器的排气通道的排气净化催化剂，并检测排气净化催化剂的劣化 基于空燃比传感器的输出的催化剂。 根据空燃比传感器的输出计算催化剂劣化的指标特性值，计算计算出的催化剂劣化的指标特性值的延时变化率，并且基于排气净化催化剂的劣化来确定 根据计算出的延时变化率。

公开(公告)号：US06474063B2

公开(公告)日：2002-11-05

申请号：US09912304

申请日：2001-07-26

申请人： Hiroshi Sawada ,  Seiichi Fuchita ,  Kouichi Kawamura ,  Toshio Yokoyama

发明人： Hiroshi Sawada ,  Seiichi Fuchita ,  Kouichi Kawamura ,  Toshio Yokoyama

IPC分类号： F16D3102

CPC分类号： F16H61/456 ,  B62D11/183 ,  E02F9/2228 ,  E02F9/225 ,  E02F9/2253 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/22 ,  F16H59/66 ,  F16H61/4035 ,  F16H61/4078 ,  F16H61/4148

摘要： A travel motor hydraulic control system for a construction machine having a plurality of hydraulic pumps which supply individually pressurized fluid for a plurality of hydraulic travel motors and a plurality of flow control valves which control the flow rate of the pressurized fluid to be supplied to the motor during an ordinary work. A controller receives a control signal representative of a travel control lever stroke sensed by a position sensor and a control signal detected by a pressure sensor, determines if the vehicle is traveling up a slope, and transmits a command signal to a solenoid operated valve to move a pilot operated shut off valve toward a valve-closing position, thereby the travel hydraulic motors are individually supplied the pressurized fluid from the hydraulic pumps.

摘要翻译： 一种用于建筑机械的行驶马达液压控制系统，具有多个液压泵，所述多个液压泵为多个液压行进马达单独提供加压流体，以及多个流量控制阀，其控制供给马达的加压流体的流量 在普通的工作 控制器接收表示由位置传感器检测到的行驶控制杆行程的控制信号和由压力传感器检测到的控制信号，确定车辆是否正在上坡上行驶，并将指令信号发送到电磁阀以移动 先导操作的截止阀朝向阀关闭位置，由此行驶液压马达分别从液压泵供给加压流体。

公开(公告)号：US06259181B1

公开(公告)日：2001-07-10

申请号：US09635849

申请日：2000-08-11

申请人： Shinichiro Kawano ,  Hiroyuki Kiriyama ,  Yukio Honda ,  Hiroshi Sawada ,  Noriyoshi Nishiyama

发明人： Shinichiro Kawano ,  Hiroyuki Kiriyama ,  Yukio Honda ,  Hiroshi Sawada ,  Noriyoshi Nishiyama

IPC分类号： H02K1900

CPC分类号： H02K1/246 ,  H02K2201/06

摘要： This invention pertains to a rotor core (6) in which a plurality of core sheets (1) are laminated on one another on a rotor shaft (4). A plurality of slits (3, 7) and a plurality of strips (2) are alternately arranged in a radial direction of each of the core sheets (1) so as to convexly confront a center of each of the core sheets (1) such that an outer peripheral rim (10) is formed between an outer peripheral edge of each of the core sheets (1) and each of opposite ends of each of the slits (3, 7). A stress concentration portion (11) which is provided at a portion (10a) of the outer peripheral rim (10) and has a width (L1) larger than that of the remaining portions of the outer peripheral rim (10).

公开(公告)号：US5485826A

公开(公告)日：1996-01-23

申请号：US217109

申请日：1994-03-24

申请人： Akira Ohata ,  Hiroshi Sawada

发明人： Akira Ohata ,  Hiroshi Sawada

IPC分类号： F01N3/20 ,  F01N11/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14 ,  F02D41/34

CPC分类号： F02D41/047 ,  F01N11/007 ,  F02D41/0295 ,  F02D41/1401 ,  F01N2550/02 ,  F02D2041/1415 ,  F02D2041/1423 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D2200/0402 ,  F02D2200/0814 ,  Y02T10/22 ,  Y02T10/47

摘要： An air-fuel ratio control device for an internal combustion engine having an intake passage and an exhaust passage with a three way catalytic converter. The device comprises a fuel injector for injecting fuel and an air-fuel ratio detector for detecting an air-fuel ratio in the engine cylinder, which is arranged in the exhaust passage upstream of the three way catalytic converter. A first estimation device estimates an amount of intake air actually fed into the engine cylinder. A first decision device decides a target amount of fuel which must be fed into the engine cylinder to realize the stoichiometric air-fuel ratio, on the basis of the amount of intake air estimated by the first estimation device. A second estimation device estimates an amount of fuel actually fed into the engine cylinder, on the basis of the air-fuel ratio detected by the air-fuel ratio detector, and the amount of intake air estimated by the first estimation device. A second decision device decides an amount of fuel actually injected by the fuel injector such that a difference between the amount of fuel estimated by the second estimation device and the target amount of fuel decided by the first decision device, and a time integration value of the difference are made to converge to "0" at the same time.

摘要翻译： 一种具有进气通道和具有三元催化转化器的排气通道的内燃机的空燃比控制装置。 该装置包括用于喷射燃料的燃料喷射器和用于检测发动机气缸中的空燃比的空燃比检测器，其设置在三元催化转化器上游的排气通道中。 第一估计装置估计实际进料到发动机气缸中的进气量。 第一判定装置基于由第一估计装置估计的进气量，决定必须供给到发动机气缸中的目标燃料量以实现理论空燃比。 第二估计装置基于由空燃比检测器检测的空燃比和由第一估计装置估计的进气量来估计实际进料到发动机气缸中的燃料量。 第二判定装置决定由燃料喷射器实际喷射的燃料量，使得由第二估计装置估计的燃料量与由第一判定装置决定的目标燃料量之间的差和 差异同时收敛于“0”。

公开(公告)号：US5022225A

公开(公告)日：1991-06-11

申请号：US497703

申请日：1990-03-23

申请人： Hiroshi Sawada ,  Tatehito Ueda ,  Kiyoshi Nakanishi ,  Takayuki Demura

发明人： Hiroshi Sawada ,  Tatehito Ueda ,  Kiyoshi Nakanishi ,  Takayuki Demura

IPC分类号： F02D41/14

CPC分类号： F02D41/1441 ,  F02D41/123 ,  F02D41/1481 ,  F02D41/1488 ,  F02D2041/1418 ,  F02D2200/021 ,  F02D41/08 ,  F02D41/1454

摘要： In an air-fuel ratio feedback control system including at least one air-fuel ratio sensor downstream of a catalyst converter provided in an exhaust gas passage, an actual air-fuel ratio is controlled in accordance with the output of the downstream-side air-fuel ratio sensor. When at least one of the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor is not satisfied the controlled air-fuel ratio is made an air-fuel ratio by an open loop control, while all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor are satisfied the controlled air-fuel ratio is made the stoichometric ratio (.lambda.=1) in accordance with the output of the downstream-side air-fuel ratio sensor. For a period after all the air-fuel ratio feedback control conditions for the downstream-side air-fuel ratio sensor are satisfied, the control by the output of the downstream-side air-fuel ratio sensor is prohibited, but, the controlled air-fuel ratio is made the stoichiometric ratio (.lambda.=1) by an open loop control or by the output of an upstream-side air-fuel ratio sensor.