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1. 发明授权

US5570575A Fuel delivery control apparatus for use with internal combustion engine 失效
标题翻译：燃油输送控制装置，用于内燃机
公开(公告)号：US5570575A
公开(公告)日：1996-11-05
申请号：US318406
申请日：1994-10-05
申请人： Ritsuo Sato , Kimiyoshi Nishizawa , Fuminori Yamanashi , Katsuhiro Shibata , Hideharu Ehara , Kaoru Ikeda , Keiji Yakushiji , Ken Ouchi , Kiyotaka Baba
发明人： Ritsuo Sato , Kimiyoshi Nishizawa , Fuminori Yamanashi , Katsuhiro Shibata , Hideharu Ehara , Kaoru Ikeda , Keiji Yakushiji , Ken Ouchi , Kiyotaka Baba
IPC分类号： F02D41/02 , F02D41/12 , F01N3/28
CPC分类号： F02D41/0235 , F02D41/123 , F02D2200/0804 , F02D2200/501
摘要： A fuel delivery control apparatus for use with an internal combustion engine including an exhaust system having a catalytic converter containing catalysts operable at a temperature for purifying exhaust gases discharged through the exhaust system. A fuelcut control is performed to interrupt fuel delivery to the engine during engine deceleration. The fuelcut control is inhibited when the catalyst temperature exceeds a predetermined value.
摘要翻译：一种与内燃机一起使用的燃料输送控制装置，所述燃料输送控制装置包括具有催化转化器的排气系统的排气系统，所述催化转化器含有可在净化通过所述排气系统排出执行燃油切断控制以在发动机减速期间中断向发动机的燃料输送。当催化剂温度超过预定值时，燃料切断控制被抑制。

2. 发明授权

US06220018B1 Exhaust emission control device 有权
标题翻译：废气排放控制装置
公开(公告)号：US06220018B1
公开(公告)日：2001-04-24
申请号：US09315230
申请日：1999-05-20
申请人： Fuminori Yamanashi , Kimiyoshi Nishizawa , Mikio Tsuzuki , Ritsuo Sato
发明人： Fuminori Yamanashi , Kimiyoshi Nishizawa , Mikio Tsuzuki , Ritsuo Sato
IPC分类号： F01N300
CPC分类号： F01N3/0835 , B01D53/944 , B01D53/9495 , F01N3/0814 , F01N13/009 , F01N13/0097 , F02D41/027 , Y02T10/22
摘要： A three-way catalytic converter is provided in the exhaust passage of an engine. An HC trap type catalytic converter which acts as an HC trap and which has a greater oxygen storage capacity than the three-way catalytic converter is disposed downstream of the three-way catalytic converter. It is necessary to create a super-oxygenated atmosphere above an HC emission temperature in order to release HC which has been absorbed by the HC trap type catalytic converter. Since the oxygen storage capacity of the three-way catalytic converter is low, a super-oxygenated atmosphere is immediately created in the HC trap type catalytic converter by varying the air-fuel ratio to a lean air-fuel ratio.
摘要翻译：在发动机的排气通道中设置三元催化转化器。作为HC捕集器并且具有比三元催化转化器更大的储氧能力的HC陷阱型催化转化器设置在三元催化转化器的下游。需要在HC排放温度以上产生超氧化气氛，以释放被HC捕集式催化转化器吸收的HC。由于三元催化转化器的储氧能力低，所以通过将空燃比改变为稀空燃比，立即在HC陷阱型催化转化器中产生超氧化气氛。

3. 发明授权

US06185933B1 Exhaust emission control device for engine 有权
标题翻译：发动机废气排放控制装置
公开(公告)号：US06185933B1
公开(公告)日：2001-02-13
申请号：US09333026
申请日：1999-06-15
申请人： Mikio Tsuzuki , Ritsuo Sato , Kimiyoshi Nishizawa
发明人： Mikio Tsuzuki , Ritsuo Sato , Kimiyoshi Nishizawa
IPC分类号： F01N300
CPC分类号： B01D53/9454 , B01D53/9495 , F01N3/0814 , F01N3/0835 , F01N13/009 , F01N2570/16 , F02D41/0235 , F02D41/027 , F02D41/0295 , Y02T10/22
摘要： A three-way catalyst (9) which has an oxygen storage capacity is disposed in an exhaust passage (3) and HC adsorbent-catalysts (10, 11) which can adsorb and oxidize HC are disposed further downstream. If release of HC from the HC adsorbent-catalysts is determined, the lean level of an air-fuel ratio is increased temporarily after HC release is commenced. Thereafter the air-fuel ratio is controlled to a lower lean level which corresponds to an HC concentration during release. In this way, after lean control is commenced, the three-way catalyst is saturated in a short time and oxygen is sent to the HC adsorbent-catalysts (10, 11) and released HC is oxidized.
摘要翻译：具有储氧能力的三元催化剂（9）设置在排气通道（3）中，HC吸附和氧化HC的HC吸附剂催化剂（10,11）进一步设置在下游。如果确定HC从HC吸附剂催化剂的释放，则HC释放开始后空燃比的稀薄水平暂时增加。此后，将空燃比控制在与释放期间的HC浓度相对应的较低浓度。以这种方式，在开始稀释控制之后，三元催化剂在短时间内饱和，并且将氧气输送到HC吸附剂 - 催化剂（10,11）并释放HC被氧化。

4. 发明授权

US07229596B2 Exhaust emission control device 有权
标题翻译：废气排放控制装置
公开(公告)号：US07229596B2
公开(公告)日：2007-06-12
申请号：US09941733
申请日：2001-08-30
申请人： Hidetoshi Ito , Kimiyoshi Nishizawa , Ritsuo Sato
发明人： Hidetoshi Ito , Kimiyoshi Nishizawa , Ritsuo Sato
IPC分类号： B01D53/94 , B01D53/72 , B01D53/34
CPC分类号： B01D53/9454 , F01N3/0814 , F01N3/0835 , F01N3/101 , F01N13/009 , F01N13/0093 , Y02T10/22
摘要： The Rh content by percentage in an HC absorbent catalytic converter provided in an exhaust pipe is greater than the Rh content by percentage in an upstream three-way catalyst. In this way, even when HC which has been temporarily absorbed is emitted in an atmosphere and the exhaust gas becomes rich, the HC absorbent catalytic converter displays improved oxidization and removal of HC due to the high content by percentage of Rh which has a high HC conversion ratio in rich atmospheres. There is no necessity to control the air-fuel ratio to a strongly lean ratio and so HC removal can be improved while maintaining suppression of NOx emissions.
摘要翻译：在排气管中设置的HC吸收式催化转化器中的Rh含量大于上游三元催化剂中的Rh含量百分比。这样，即使临时吸收的HC在气氛中排出并且排气变浓，则HC吸收催化转化器由于具有高HC含量的Rh的高含量而显示改善的HC的氧化和除去丰富的气氛中的转化率。没有必要将空燃比控制到强的稀薄比例，因此可以在保持NO排放的抑制的同时提高HC去除量。

5. 发明授权

US5557929A Control system for internal combustion engine equipped with exhaust gas purifying catalyst 失效
标题翻译：配有排气净化催化剂的内燃机控制系统
公开(公告)号：US5557929A
公开(公告)日：1996-09-24
申请号：US363088
申请日：1994-12-23
申请人： Ritsuo Sato , Kimiyoshi Nishizawa
发明人： Ritsuo Sato , Kimiyoshi Nishizawa
IPC分类号： F01N3/20 , F01N11/00 , F02D41/14 , F02D41/22 , F01N3/28
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0422 , Y02T10/22 , Y02T10/47
摘要： A control system for an internal combustion engine equipped with a catalytic converter including an exhaust gas purifying catalyst. The control system comprises a catalyst deterioration diagnosing device for diagnosing the deterioration condition of the catalyst. The operation of the catalyst deterioration diagnosing device is avoided when a first frequency at which an engine operating condition shifts to a range for stopping fuel supply to a fuel injector valve becomes larger by not less than a predetermined value than a second frequency at which the engine operating condition shifts to a range for increasing the amount of the fuel supply, thereby preventing the catalyst deterioration diagnosis from being carried out under a condition in which the catalyst is subjected to a high temperature and lean (air-fuel ratio) atmosphere.
摘要翻译：一种配备有包括排气净化催化剂的催化转化器的内燃机的控制系统。控制系统包括用于诊断催化剂劣化状况的催化剂劣化诊断装置。当发动机工作状态转移到停止向燃料喷射阀的燃料供给的范围的第一频率时，避免催化剂劣化诊断装置的操作不小于比发动机的第二频率小的预定值操作条件转变到增加燃料供给量的范围，从而防止催化剂劣化诊断在催化剂经受高温和贫（空燃比）气氛的条件下进行。

6. 发明授权

US06334306B1 Exhaust gas purification apparatus in combustion engine 失效
标题翻译：内燃机废气净化装置
公开(公告)号：US06334306B1
公开(公告)日：2002-01-01
申请号：US09321825
申请日：1999-05-28
申请人： Kouichi Mori , Ritsuo Sato , Kimiyoshi Nishizawa
发明人： Kouichi Mori , Ritsuo Sato , Kimiyoshi Nishizawa
IPC分类号： F01N300
CPC分类号： B01D53/9454 , B01D53/9495 , B01D2255/912 , F01N3/0233 , F01N3/0814 , F01N3/0835 , F01N3/0871 , F01N13/0097 , F01N13/011 , F01N13/107 , F01N2330/06 , F01N2470/12 , Y02T10/22
摘要： A three-way catalytic converter 42 and a combined catalytic-hydrocarbon adsorbent 43 are arranged in an exhaust manifold 32 of an engine 11. The three-way catalytic converter 42 and the combined catalytic-hydrocarbon adsorbent 43 are arranged adjacent to each other in series from an upstream. A pulsing stream of the exhaust gas is kept strong at the point where combined catalytic-hydrocarbon adsorbents 42 are arranged. Thus, hydrocarbons desorbed from the combined catalytic-hydrocarbon adsorbents 42 are strongly affected by an action of a pulsing stream of the exhaust gas, and hydrocarbons desorbed from the combined catalytic-hydrocarbon adsorbent 43 flow backward in the direction of the three-way catalytic converter 42. Consequently, hydrocarbons desorbed from the combined catalytic-hydrocarbon adsorbent 43 are given a chance to contact with the three-way catalytic converter 42 again, and are oxidized with the three-way catalytic converter 42.
摘要翻译：三元催化转化器42和组合的催化烃吸附剂43设置在发动机11的排气歧管32中。三元催化转化器42和组合的催化烃吸附剂43彼此串联布置从上游。废气的脉冲流在排列组合的催化 - 烃吸附剂42的点处保持较强。因此，从组合的催化烃吸附剂42解吸的烃受到排气脉冲流的作用的强烈影响，从组合的催化 - 烃吸附剂43脱附的烃在三元催化转化器的方向上向后流动因此，从组合的催化 - 烃吸附剂43脱附的烃被再次与三元催化转化器42接触的机会，并被三元催化转化器42氧化。

7. 发明授权

US06230489B1 Emission control device for internal combustion engine 有权
标题翻译：内燃机排放控制装置
公开(公告)号：US06230489B1
公开(公告)日：2001-05-15
申请号：US09323698
申请日：1999-06-01
申请人： Mikio Tsuzuki , Kimiyoshi Nishizawa , Ritsuo Sato , Naoki Kachi
发明人： Mikio Tsuzuki , Kimiyoshi Nishizawa , Ritsuo Sato , Naoki Kachi
IPC分类号： F01N310
CPC分类号： B01D53/9454 , F01N3/0814 , F01N3/0835 , F01N3/0871 , F01N3/2828 , F01N13/009 , Y02A50/2324 , Y02T10/22
摘要： A plurality of catalysts (7), (9) are disposed in an engine exhaust passage (13). At least the catalyst disposed downstream of these catalysts comprises a multi-layered catalyst (7) which is covered in a catalyst layer (24a) on the surface and an HC absorbent layer (24b) on an inner layer with respect to a catalyst carrier (23). A ratio of the downstream multi-layered catalyst (7) (catalyst heat capacity/catalyst surface area) is set so that it is greater than the same ratio for the upstream catalyst (9). In this way, temperature increase in the upstream catalyst (9) is advanced, the temperature gradient in the downstream catalyst (7) is increased and temperature rises in the HC absorbent layer are reduced. As a result, the HC emission period approximates the activation period of the catalyst layer (24a). In this way, during low temperature vehicle operation, it is possible to synchronize the timing of HC emission by the HC absorbent layer and catalyst activation and therefore to achieve extreme reductions in HC emitted to the outside atmosphere.
摘要翻译：多个催化剂（7），（9）设置在发动机排气通道（13）中。至少设置在这些催化剂下游的催化剂包括覆盖在表面上的催化剂层（24a）中的多层催化剂（7）和相对于催化剂载体的内层上的HC吸收层（24b） 23）。下游多层催化剂（7）（催化剂热容量/催化剂表面积）的比例被设定为大于上游催化剂（9）的相同比例。这样，上游催化剂（9）的温度上升，下游催化剂（7）的温度梯度上升，HC吸收层的温度上升降低。结果，HC排放周期近似于催化剂层（24a）的活化时间。以这种方式，在低温车辆操作期间，可以使HC吸收层的HC排放的定时和催化剂的活化同步，从而实现对外部气氛的HC的极度降低。

8. 发明授权

US06303084B1 Exhaust emission control device 有权
标题翻译：废气排放控制装置
公开(公告)号：US06303084B1
公开(公告)日：2001-10-16
申请号：US09327484
申请日：1999-06-08
申请人： Hidetoshi Ito , Kimiyoshi Nishizawa , Ritsuo Sato
发明人： Hidetoshi Ito , Kimiyoshi Nishizawa , Ritsuo Sato
IPC分类号： B01D5394
CPC分类号： B01D53/9454 , F01N3/0814 , F01N3/0835 , F01N3/101 , F01N13/009 , F01N13/0093 , Y02T10/22
摘要： The Rh content by percentage in an HC absorbent catalytic converter provided in an exhaust pipe is greater than the Rh content by percentage in an upstream three-way catalyst. In this way, even when HC which has been temporarily absorbed is emitted in an atmosphere and the exhaust gas becomes rich, the HC absorbent catalytic converter displays improved oxidization and removal of HC due to the high content by percentage of Rh which has a high HC conversion ratio in rich atmospheres. There is no necessity to control the air-fuel ratio to a strongly lean ratio and so HC removal can be improved while maintaining suppression of NOx emissions.
摘要翻译：在排气管中设置的HC吸收式催化转化器中的Rh含量大于上游三元催化剂中的Rh含量百分比。这样，即使临时吸收的HC在气氛中排出并且排气变浓，则HC吸收催化转化器由于具有高HC含量的Rh的高含量而显示改善的HC的氧化和除去丰富的气氛中的转化率。不需要将空燃比控制为强的稀薄比例，因此可以在保持NOx排放的抑制的同时提高HC去除率。

9. 发明授权

US6014962A Engine air-fuel ratio controller 失效
标题翻译：发动机空燃比控制器
公开(公告)号：US6014962A
公开(公告)日：2000-01-18
申请号：US58301
申请日：1998-04-10
申请人： Ritsuo Sato , Kimiyoshi Nishizawa
发明人： Ritsuo Sato , Kimiyoshi Nishizawa
IPC分类号： F02D45/00 , F02D41/04 , F02D41/14
CPC分类号： F02D41/2454 , F02D41/2441
摘要： Feedback correction of an air-fuel ratio is performed, a feedback correction amount is learned, and applied as a learning value on the next occasion that control is performed. It is determined whether or not an engine is in a high load state, and when the high load state continues for a predetermined time, the feedback correction amount is fixed at a predetermined value. The learning value is fixed at its value based on the feedback correction amount before fixing. The predetermined time is set such that the learning value in the high load state converges within this time. By applying open loop control using this learning value, surging of the vehicle due to the air-fuel ratio feedback control in the high engine load state is prevented, while the air-fuel ratio in this state is controlled precisely to the stoichiometric air-fuel ratio.
摘要翻译：执行空燃比的反馈校正，学习反馈校正量，并且在下一次进行控制的情况下作为学习值应用。确定发动机是否处于高负载状态，并且当高负载状态持续预定时间时，反馈校正量被固定在预定值。学习值根据修正前的反馈校正量固定为其值。预定时间被设定为使得高负载状态下的学习值在该时间内收敛。通过使用该学习值应用开环控制，可以防止在高发动机负载状态下由于空燃比反馈控制引起的车辆浪涌，同时将该状态下的空燃比精确控制在理论空燃比比。

10. 发明授权

US5953910A Engine air-fuel ratio converter with means for determining the deterioration of the catalytic converter 失效
标题翻译：用于确定催化转化器的劣化的装置的发动机空燃比转换器
公开(公告)号：US5953910A
公开(公告)日：1999-09-21
申请号：US982043
申请日：1997-12-01
申请人： Ritsuo Sato , Kimiyoshi Nishizawa
发明人： Ritsuo Sato , Kimiyoshi Nishizawa
IPC分类号： F02D45/00 , F01N11/00 , F02D41/14 , F02D41/22 , G05B13/02 , F01N3/00
CPC分类号： F01N11/007 , F02D41/1441 , F01N2550/02 , Y02T10/47
摘要： An air-fuel ratio is feedback corrected based on an output signal from a first oxygen sensor situated upstream of a catalyst, and an updating amount of a feedback correction coefficient is modified based on a difference between an output signal from a second sensor situated downstream of the catalyst and a preset slice level SLR1. Catalyst deterioration is determined based on a ratio of a fluctuation frequency of the output signal of the first oxygen sensor exceeding a slice level SLF and the fluctuation frequency of the output signal of the second oxygen sensor exceeding a slice level SLR2. By setting the slice level SLR1 to a different value when deterioration diagnosis of the catalyst is being performed from when the diagnosis is not being performed, the effect of varying the updating amount on deterioration diagnosis of the catalyst is eliminated.
摘要翻译：基于来自位于催化剂上游的第一氧传感器的输出信号，反馈校正空燃比，并且基于来自位于催化剂下游的第二传感器的输出信号之间的差异来修改反馈校正系数的更新量催化剂和预设切片级SLR1。基于第一氧传感器的输出信号的波动频率超过限幅电平SLF和第二氧传感器的输出信号的波动频率超过限幅电平SLR2而确定催化剂劣化。通过在不进行诊断的情况下进行催化剂的劣化诊断时，通过将切片水平SLR1设定为不同的值，消除了更新量对催化剂劣化诊断的影响。

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