公开(公告)号：US06941745B2

公开(公告)日：2005-09-13

申请号：US10442126

申请日：2003-05-21

申请人： Noriaki Ikemoto ,  Hisashi Iida

发明人： Noriaki Ikemoto ,  Hisashi Iida

IPC分类号： F02D45/00 ,  F01N3/24 ,  F01N3/28 ,  F01N13/02 ,  F02D41/14 ,  F01N3/00

CPC分类号： F01N3/101 ,  F01N13/009 ,  F01N13/0093 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1482 ,  F02D41/1483 ,  F02D41/187 ,  F02D2200/0404 ,  F02D2200/0406 ,  Y02T10/22

摘要： An exhaust gas cleaning system has two catalysts and three sensors. The target voltage of a second sensor arranged upstream of a downstream catalyst is set according to the output voltage of the second sensor and the output voltage of a third sensor. Thus, even if the output voltage of the second sensor shows a stoichiometric condition and the output voltage of the third sensor shows a rich condition, it is possible to restrict the unnecessary correction of the target voltage and to optimize the cleaning rate of the downstream catalyst. Therefore, it is possible to reduce emission from being impaired by an expected variation in the air-fuel ratio.

摘要翻译： 废气净化系统有两个催化剂和三个传感器。 布置在下游催化剂​​上游的第二传感器的目标电压根据第二传感器的输出电压和第三传感器的输出电压来设定。 因此，即使第二传感器的输出电压显示化学计量条件，并且第三传感器的输出电压呈现浓的状态，也可以限制目标电压的不必要的校正，并优化下游催化剂​​的清洗率 。 因此，可以通过空燃比的预期变化来减少排放的损害。

公开(公告)号：US06898927B2

公开(公告)日：2005-05-31

申请号：US10270270

申请日：2002-10-15

申请人： Syujiro Morinaga ,  Hisashi Iida ,  Yoshihiro Majima ,  Tatsuya Oka ,  Akira Ichikawa ,  Keiji Wakahara ,  Masayuki Tsutsumi ,  Hideyuki Maeji ,  Masakazu Yamada ,  Takanori Takahashi ,  Yukihiro Yamashita

发明人： Syujiro Morinaga ,  Hisashi Iida ,  Yoshihiro Majima ,  Tatsuya Oka ,  Akira Ichikawa ,  Keiji Wakahara ,  Masayuki Tsutsumi ,  Hideyuki Maeji ,  Masakazu Yamada ,  Takanori Takahashi ,  Yukihiro Yamashita

IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N11/00 ,  F01N13/02 ,  F01N13/04 ,  F02D41/02 ,  F02D41/14 ,  F01N3/00

CPC分类号： F02D41/1496 ,  F01N3/2006 ,  F01N3/22 ,  F01N11/00 ,  F01N11/007 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/011 ,  F01N2550/02 ,  F01N2550/14 ,  F01N2900/0422 ,  F02D41/0255 ,  F02D41/1456 ,  F02D41/1494 ,  F02D2041/2058 ,  Y02T10/26 ,  Y02T10/47

摘要： An emission control system has a catalyst and a sensor responding to a component of exhaust gas. In order to speed warming up the catalyst, the emission control system increases the amount of heat dissipated by exhaust gas. A diagnosis of the emission control system is carried out by determining whether the amount of heat dissipated by exhaust gas is sufficient or insufficient. The amount of heat dissipated by exhaust gas is represented by the length of time to an activated state of the sensor. In the diagnosis, the amount of heat generated by a heater provided in the sensor is taken into consideration.

摘要翻译： 排放控制系统具有响应废气成分的催化剂和传感器。 为了加速催化剂的升温，排放控制系统增加排气散发的热量。 排放控制系统的诊断是通过确定废气散发的热量是否足够或不足来进行。 由排气消耗的热量由传感器的激活状态的时间长度表示。 在诊断中，考虑了设置在传感器中的加热器产生的热量。

公开(公告)号：US06530214B2

公开(公告)日：2003-03-11

申请号：US09998641

申请日：2001-12-03

申请人： Noriaki Ikemoto ,  Hisashi Iida ,  Kouichi Shimizu

发明人： Noriaki Ikemoto ,  Hisashi Iida ,  Kouichi Shimizu

IPC分类号： F01N300

CPC分类号： F02D41/0235 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2041/1419 ,  F02D2041/1422

摘要： Exhaust gas sensors are provided at the upstream side and the downstream side of a catalyst, respectively. An intermediate target value is set on the basis of the output of the downstream-side exhaust gas sensor of preceding computation time and a final target value that is a final downstream-side target air-fuel ratio. The compensation amount of the upstream-side target air-fuel ratio is calculated on the basis of the deviation between the present output of the downstream-side exhaust gas sensor and the intermediate target value. At least one of an update amount and an update rate of the intermediate value, a control gain, a control period and a control range of a sub-feedback control is varied.

公开(公告)号：US06343467B1

公开(公告)日：2002-02-05

申请号：US09119604

申请日：1998-07-22

申请人： Hidenobu Muto ,  Hisashi Iida ,  Shujiro Morinaga

发明人： Hidenobu Muto ,  Hisashi Iida ,  Shujiro Morinaga

IPC分类号： F01N300

CPC分类号： F02M25/08 ,  F02D41/0042

摘要： Evaporated fuel gas from a canister is introduced into an intake path of an internal combustion engine. A target air-fuel ratio is changed to a value on the fuel rich side during the introduction of purge gas in accordance with the purge gas concentration. This change will restrict the shift of the air-fuel ratio toward the lean side, allowing a catalyst to operate at high purification efficiency even during the introduction of purge gas. The change may be varied in accordance with the volume of the evaporated fuel gas or a ratio of the evaporated fuel gas to the fuel supplied to the engine.

摘要翻译： 来自罐的蒸发燃料气体被引入到内燃机的进气路径中。 在根据吹扫气体浓度引入吹扫气体期间，将目标空燃比改变为富燃料侧的值。 这种变化将限制空燃比向贫侧的转移，即使在吹扫气体的引入期间，催化剂也能以高净化效率运行。 该变化可以根据蒸发的燃料气体的体积或蒸发的燃料气体与供应到发动机的燃料的比率而变化。

公开(公告)号：US06338336B1

公开(公告)日：2002-01-15

申请号：US09369387

申请日：1999-08-06

申请人： Hisashi Iida

发明人： Hisashi Iida

IPC分类号： F02D4114

CPC分类号： F02D41/0042 ,  F02D41/2448 ,  F02D41/2454

摘要： A method and apparatus for controlling the air-fuel ratio of an internal combustion engine that prevents erroneous learning while properly setting a learning frequency to thereby execute highly accurate air-fuel ratio control. Fuel vapor generated in a fuel tank is temporarily adsorbed in a canister via a tank inner pressure-regulating valve, and the adsorbed vapor is discharged to an engine intake system via a purge solenoid valve. A sensor for detecting tank inner pressure is arranged in the fuel tank, and an ECU calculates a feedback correction amount based on an oxygen concentration in exhaust gas and executes air-fuel ratio feedback control by using the feedback correction amount. The ECU prohibits the air-fuel ratio learning value from being updated when the tank inner pressure exceeds a predetermined criterion value based on the tank inner pressure detected by the tank inner pressure sensor.

摘要翻译： 一种用于控制内燃机的空燃比的方法和装置，其在正确设置学习频率的同时防止错误学习，从而执行高精度的空燃比控制。 在燃料箱中产生的燃料蒸汽经由罐内压力调节阀临时吸附在罐中，吸附的蒸气经由净化电磁阀排出到发动机进气系统。 用于检测罐内压的传感器布置在燃料箱中，并且ECU基于排气中的氧浓度来计算反馈校正量，并且通过使用反馈校正量来执行空燃比反馈控制。 当罐内压力超过基于由罐内压传感器检测到的罐内压力的预定标准值时，ECU禁止更新空燃比学习值。

公开(公告)号：US5974857A

公开(公告)日：1999-11-02

申请号：US172662

申请日：1998-10-15

申请人： Yukihiro Yamashita ,  Hisashi Iida ,  Jun Hasegawa

发明人： Yukihiro Yamashita ,  Hisashi Iida ,  Jun Hasegawa

IPC分类号： F02D41/14 ,  G01N27/406

CPC分类号： F02D41/1476 ,  F02D41/1494 ,  G01N27/4067 ,  F02D41/1456

摘要： A sensing element of an oxygen sensor is controlled to keep a target impedance for maintaining activation temperature of the oxygen sensor. As the sensing element deteriorates, its internal impedance increases and power supply to a heater for heating the sensing element increases. The oxygen sensor temperature rises excessively above an activation temperature. To restrict excessive temperature rise, the target impedance is altered when the supply power to the heater exceeds a predetermined reference. The target impedance may be increased with increase in the power supply to the heater. Alternatively, the heater supply power is limited to a predetermined maximum for restricting excessive temperature rise.

摘要翻译： 控制氧传感器的感测元件以保持目标阻抗以保持氧传感器的激活温度。 当传感元件劣化时，其内部阻抗增加，并且用于加热感应元件的加热器的电力供应增加。 氧传感器温度过高上升到活化温度以上。 为了限制过度的温度上升，当加热器的供电超过预定的参考值时，目标阻抗被改变。 目标阻抗可以随着对加热器的电力供应的增加而增加。 或者，加热器供给功率被限制在预定的最大值以限制过度的温度上升。

公开(公告)号：US5771688A

公开(公告)日：1998-06-30

申请号：US694176

申请日：1996-08-08

申请人： Jun Hasegawa ,  Hisashi Iida

发明人： Jun Hasegawa ,  Hisashi Iida

IPC分类号： F02D45/00 ,  F01N3/24 ,  F02D41/04 ,  F02D41/14 ,  F01N3/20

CPC分类号： F02D41/1441 ,  F02D41/1456

摘要： On an exhaust pipe of an internal combustion engine, an A/F sensor is disposed at an upstream side of a three-way catalyst and a downstream side O.sub.2 sensor is disposed on a downstream side thereof. A CPU determines according to an exhaust gas temperature whether the operational state of the engine is in a high load. In an early stage of the engine operation of high load, CPU sets a "rich" side target air-fuel ratio within a range that enables the downstream side O.sub.2 sensor to make linear detection of air-fuel ratio and executes feedback control of air-fuel ratio by using the set target air-fuel ratio. Also, when the level of the load has increased, CPU sets a "rich" side target air-fuel ratio according to the exhaust gas temperature and executes feedback control of air-fuel ratio by using the set target air-fuel ratio. Further, when the "rich" width deviates from a range that enables the A/F sensor to make its detection, CPU performs open-loop control with respect to the increment in fuel.

摘要翻译： 在内燃机的排气管上，A / F传感器设置在三通催化剂的上游侧，下游侧的O2传感器设置在其下游侧。 CPU根据排气温度确定发动机的运转状态是否处于高负荷状态。 在高负载发动机运行的早期阶段，CPU将“空气”侧目标空燃比设定在使下游侧O2传感器能够进行空燃比线性检测的范围内， 通过使用设定的目标空燃比来确定燃料比。 此外，当负载水平增加时，CPU根据排气温度设定“丰富”的侧目标空燃比，并且通过使用设定的目标空燃比来执行空燃比的反馈控制。 此外，当“丰富”宽度偏离使得A / F传感器能够进行检测的范围时，CPU对于燃料增量执行开环控制。

公开(公告)号：US5487372A

公开(公告)日：1996-01-30

申请号：US255767

申请日：1994-06-07

申请人： Hisashi Iida ,  Keiji Honjoh

发明人： Hisashi Iida ,  Keiji Honjoh

IPC分类号： F02M69/32 ,  F01N3/22 ,  F01N11/00 ,  F02D7/02 ,  F02D9/10 ,  F02D35/00 ,  F02D41/22 ,  F02D45/00 ,  F02M3/07 ,  F02M21/02 ,  F02M23/04 ,  F02M23/12 ,  F02M69/00 ,  F02M69/04 ,  F02M69/08 ,  F02B23/00

CPC分类号： F02M69/08 ,  F01N11/00 ,  F02D19/024 ,  F02D19/025 ,  F02D41/221 ,  F02D7/02 ,  F02D9/1055 ,  F02M21/0278 ,  F02M23/04 ,  F02M3/07 ,  F02M69/047 ,  Y02T10/146 ,  Y02T10/32 ,  Y02T10/47

摘要： The invention provides a malfunctional detecting apparatus for an assist air control system for internal combustion engines, which is capable of detecting malfunction such as the deterioration of the response of air control valve. A fuel injection valve is provided at downstream side of a throttle valve in an intake passage, and assist air passage is introduced into an injection port of the fuel injection valve. The assist air passage is open or closed by an air control valve which is operated in synchronism with the fuel injection valve. The assist air passage pressure sensor for detecting assist air pressure is provided in the assist air passage. The malfunction of the air control valve is judged based on the assist air pressure immediately after the air control valve is operated.

摘要翻译： 本发明提供一种用于内燃机的辅助空气控制系统的故障检测装置，其能够检测诸如空气控制阀的响应的恶化的故障。 燃料喷射阀设置在进气通道中的节流阀的下游侧，并且辅助空气通道被引入到燃料喷射阀的喷射口中。 辅助空气通道由与燃料喷射阀同步操作的空气控制阀打开或关闭。 用于检测辅助空气压力的辅助空气通道压力传感器设置在辅助空气通道中。 空气控制阀的故障根据空气控制阀的运行后的辅助空气压力进行判定。

公开(公告)号：US5216991A

公开(公告)日：1993-06-08

申请号：US937165

申请日：1992-08-31

申请人： Hisashi Iida ,  Shigenori Isomura ,  Junya Morikawa

发明人： Hisashi Iida ,  Shigenori Isomura ,  Junya Morikawa

IPC分类号： F02B77/08 ,  F02D31/00 ,  F02D41/00 ,  F02M25/08 ,  G01M15/04

CPC分类号： F02M25/0809 ,  F02D31/004 ,  F02D41/0042

摘要： An internal combustion engine in which a purge control valve is provided in a fuel vapor supply passage connecting a canister and an intake pipe of the internal combustion engine, the opening degree of the purge control valve is regulated by a purge flow rate control unit depending on operating condition of the internal combustion engine, and the opening degree of a rotational speed control valve is regulated to adjust an amount of intake air into the internal combustion engine, thereby changing a rotational speed of the internal combustion engine. While the internal combustion engine is idling in such a condition that the air/fuel ratio of a gas mixture supplied to the internal combustion engine is controlled to be held constant and the opening degree of the rotational speed control valve is regulated so that the rotational speed of the internal combustion engine reaches a target value, a controller operates to forcibly change the opening degree of the purge control valve from a first set opening degree to a second set opening degree, and determine the presence or absence of an abnormality in supply of fuel vapor to the intake pipe of the internal combustion engine through the supply passage and the purge control valve based on a change in the opening degree of the rotational speed control valve resulting at that time.

摘要翻译： 一种内燃机，其中在连接罐和内燃机的进气管的燃料蒸气供给通道中设置有净化控制阀，净化控制阀的开度由吹扫流量控制单元根据 调节内燃机的运行状态和转速控制阀的开度来调整进入内燃机的进气量，从而改变内燃机的转速。 当内燃机在供给到内燃机的气体混合气体的空气/燃料比被控制为保持恒定并且转速控制阀的开度被调整为使得转速 所述内燃机达到目标值时，控制器将所述排气控制阀的开度从第一设定开度强制变化为第二设定开度，并且判断是否存在燃料供给异常 基于当时导致的转速控制阀的开度的变化，通过供给通路和净化控制阀向内燃机的进气管进行蒸气。

公开(公告)号：US08905007B2

公开(公告)日：2014-12-09

申请号：US13471636

申请日：2012-05-15

申请人： Motomasa Iizuka ,  Kimitaka Saito ,  Hisashi Iida

发明人： Motomasa Iizuka ,  Kimitaka Saito ,  Hisashi Iida

IPC分类号： F01P3/20

CPC分类号： F01N5/02 ,  F01N3/10 ,  F02B19/02 ,  F02B19/1009 ,  F02D13/0276 ,  F02M26/37 ,  Y02T10/125 ,  Y02T10/16 ,  Y02T10/18

摘要： An internal combustion engine is provided with a heat-generation chamber disposed so as to be adjacent to a combustion chamber, a heat-generation chamber valve capable of setting up either a communicating state or a shut-down state between the heat-generation chamber and the combustion chamber, and a heat-recovery pipe for recovering heat of a gas guided into the combustion chamber and utilizing the heat as recovered for warm-up. The heat-generation chamber is provided with a heat-generation-chamber spark plug. A catalytic unit is provided between the heat-generation-chamber spark plug and the heat-recovery pipe.

摘要翻译： 内燃机设置有与燃烧室相邻设置的发热室，能够在发热室和发热室之间建立连通状态或停止状态的发热室阀， 燃烧室和用于回收被引导到燃烧室中的气体的热量并利用回收用于预热的热量的热回收管。 发热室设有发热室火花塞。 在发热室火花塞和热回收管之间设有催化单元。