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51. 发明授权

US06679050B1 Exhaust emission control device for internal combustion engine 失效
标题翻译：内燃机废气排放控制装置
公开(公告)号：US06679050B1
公开(公告)日：2004-01-20
申请号：US09527519
申请日：2000-03-16
申请人： Hideaki Takahashi , Kimiyoshi Nishizawa
发明人： Hideaki Takahashi , Kimiyoshi Nishizawa
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N2570/04 , F02D41/025 , F02D41/0275 , F02D41/028 , F02D2200/0806 , F02D2200/0811 , F02D2200/0818 , Y02T10/22 , Y02T10/26
摘要： The exhaust pipe (7) of an engine (1) is provided with a front three-way catalyst (8) and a rear three-way catalyst (9). A controller (6) determines whether temperature rise conditions in the rear three-way catalyst (9) are satisfied. When temperature rise conditions in the rear three-way catalyst (9) are satisfied, the air-fuel ratio of the exhaust gas flowing into the front three-way catalyst (8) is made to fluctuate periodically to rich or lean about the stoichiometric air-fuel ratio, and the amplitude of air-fuel ratio fluctuation is increased. In this way, temperature rise of the front three-way catalyst (8) is suppressed, and the temperature of the rear three-way catalyst (9) rises.
摘要翻译：发动机（1）的排气管（7）设有前三通催化剂（8）和后三通催化剂（9）。控制器（6）确定是否满足后三通催化剂（9）中的温度上升条件。当满足后三通催化剂（9）的升温条件时，流入前三元催化剂（8）的排气的空燃比使周期性地变化为富于或偏离化学计量空气 - 燃料比，空燃比波动幅度增大。这样，前三元催化剂（8）的温度上升被抑制，后三元催化剂（9）的温度上升。

52. 发明授权

US06635227B1 Catalytic converter 失效
标题翻译：催化转化器
公开(公告)号：US06635227B1
公开(公告)日：2003-10-21
申请号：US09527463
申请日：2000-03-17
申请人： Katsuhiro Shibata , Kimiyoshi Nishizawa , Ken Oouchi
发明人： Katsuhiro Shibata , Kimiyoshi Nishizawa , Ken Oouchi
IPC分类号： B01D5334
CPC分类号： F01N3/2853 , F01N3/2857 , F01N3/2867
摘要： A catalytic converter for purifying exhaust gas discharged from an automotive internal combustion engine. The catalytic converter comprises a casing in which a monolithic catalyst carrier is disposed. An annular cap is fixedly disposed inside the casing and located generally coaxial with the monolithic catalyst carrier. The annular cap is located near an end face of the monolithic catalyst carrier. The cap includes annular bottom, inner and outer walls. The inner and outer walls are separate from each other and extend from the bottom wall. The inner wall is located radially inward of the outer wall. The bottom, inner and outer walls are arranged generally U-shaped in cross-section so as to form a groove. Additionally, an annular elastic washer is coaxially disposed within the groove of the annular cap. The elastic washer is disposed in press contact with the end face of the monolithic catalyst carrier to axially elastically support the monolithic catalyst carrier. The annular elastic washer is an annular molded structure of wire mesh. The annular elastic washer has an inner peripheral face which has a diameter larger than a diameter of an outer peripheral surface of the inner wall of the cap so as to form a clearance between the elastic washer and the inner wall of the cap in a state where the elastic washer is assembled in the casing upon being compressed.
摘要翻译：一种用于净化从汽车内燃机排出的废气的催化转化器。催化转化器包括其中设置有整体式催化剂载体的壳体。环形盖固定地设置在壳体内并且与整体式催化剂载体大致同轴地定位。环形帽位于整体式催化剂载体的端面附近。盖子包括环形底部，内壁和外壁。内壁和外壁彼此分离并从底壁延伸。内壁位于外壁的径向内侧。底壁，内壁和外壁的横截面大致为U形，从而形成凹槽。此外，环形弹性垫圈同轴地设置在环形盖的槽内。弹性垫圈设置成与整体式催化剂载体的端面压接，以轴向弹性地支撑整体式催化剂载体。环形弹性垫圈是金属丝网的环形模制结构。环形弹性垫圈的内周面的直径大于盖的内壁的外周面的直径，从而在弹性垫圈与盖的内壁之间形成间隙，弹性垫圈在被压缩时组装在壳体中。

53. 发明授权

US06475446B1 Carrier body for exhaust gas catalysts 失效
标题翻译：废气催化剂载体
公开(公告)号：US06475446B1
公开(公告)日：2002-11-05
申请号：US08973470
申请日：1997-12-16
申请人： Tetsuro Horiike , Kimiyoshi Nishizawa , Hideaki Takahashi
发明人： Tetsuro Horiike , Kimiyoshi Nishizawa , Hideaki Takahashi
IPC分类号： B01D5334
CPC分类号： F01N3/2814 , B01J35/04 , F01N3/281 , F01N2330/321 , Y10T428/1234 , Y10T428/24149
摘要： A metal catalyst carrier body includes layers of first and second metal sheets defining passages through which exhaust gases flow. The first metal sheet is corrugated and engaged with the second metal sheet in each of upstream and downstream regions at numeral contact points. In intermediate region between the upstream and downstream regions, the first metal sheet is out of engagement with the second metal sheet.
摘要翻译：金属催化剂载体主体包括限定废气流过的通道的第一和第二金属板的层。第一金属片是波纹状的，并且在数字接触点的每个上游和下游区域中与第二金属片接合。在上游和下游区域之间的中间区域中，第一金属片与第二金属片脱离接合。

54. 发明授权

US06447735B1 Exhaust purifier and manufacturing method of same 失效
标题翻译：排气净化器及其制造方法相同
公开(公告)号：US06447735B1
公开(公告)日：2002-09-10
申请号：US09288213
申请日：1999-04-08
申请人： Fuminori Yamanashi , Kimiyoshi Nishizawa
发明人： Fuminori Yamanashi , Kimiyoshi Nishizawa
IPC分类号： B01D5388
CPC分类号： B01D53/9454 , B01J35/0006 , B01J35/04 , F01N3/0814 , F01N3/0835 , F01N3/281 , F01N3/2853 , F01N3/2867 , F01N13/009 , F01N13/0097 , Y02T10/22 , Y10T29/49345
摘要： Plural hydrocarbon HC adsorbing units (A1-A3) and plural three-way catalysts (B1-B3) are accommodated in a shell (2). The HC adsorbing units (A1-A3) and three-way catalysts (B1-B3) are disposed alternately in series, and one of the HC adsorbing units (A1-A3) is disposed in the position nearest to an inlet (14) of the shell (2). The HC contained in exhaust gas when the engine is started cold is first adsorbed by the HC adsorbing units (A1-A3), and the HC desorbed from the HC adsorbing units (A1-A3) with temperature rise is oxidized by the adjacent three-way catalysts (B1-B3) situated downstream. The heat capacities of the HC adsorbing units (A1-A3) and the three-way catalysts (B1-B3) are set so that the timing at which HC starts to be desorbed from the HC adsorbing units (A1-A3) is later than the timing at which HC starts to be oxidized by the three-way catalysts (B1-B3) situated downstream. In this way, HC which are discharged from the engine during a cold start are efficiently purified.
摘要翻译：多个烃HC吸附单元（A1-A3）和多个三元催化剂（B1-B3）容纳在壳体（2）中。 HC吸附单元（A1-A3）和三元催化剂（B1-B3）交替排列配置，其中一个HC吸附单元（A1-A3）配置在最接近入口（14）的位置壳（2）。当发动机起动冷时废气中含有的HC首先被HC吸附单元（A1-A3）吸附，并且随着温度升高从HC吸附单元（A1-A3）中解吸的HC被相邻的三元组分氧化，位于下游的双向催化剂（B1-B3）。设定HC吸附单元（A1-A3）和三元催化剂（B1-B3）的热容量使得HC开始从HC吸附单元（A1-A3）解吸的时间晚于 HC开始被位于下游的三元催化剂（B1-B3）氧化的时间。以这种方式，在冷启动期间从发动机排出的HC被有效地净化。

55. 发明授权

US06408816B1 Control apparatus and method for direct-injection spark-ignition internal combustion engine 有权
标题翻译：直喷式火花点火内燃机的控制装置及方法
公开(公告)号：US06408816B1
公开(公告)日：2002-06-25
申请号：US09658661
申请日：2000-09-08
申请人： Masayuki Tomita , Kimiyoshi Nishizawa
发明人： Masayuki Tomita , Kimiyoshi Nishizawa
IPC分类号： F02B1700
CPC分类号： F02D41/402 , F02B2075/125 , F02D41/0255 , F02D41/1473 , F02D41/3023 , Y02T10/123 , Y02T10/26 , Y02T10/44
摘要： A control apparatus and method for a direct-injection spark-ignition internal combustion engine in which a stratified combustion is performed to raise an exhaust temperature under a condition prior to a completion of an engine warm-up. The stratified combustion is provided with a lean air-fuel mixture formed over a whole combustion chamber through a fuel injection at a suction stroke and a rich air-fuel mixture formed in an inner space surrounding a spark plug at the combustion chamber through a fuel injection at a compression stroke and a fuel injection quantity of the fuel injection at the suction stroke. A fuel injection quantity of the fuel injection at the compression stroke is corrected by use of a feedback correction coefficient so that an average air-fuel ratio over the whole combustion chamber is controlled to be a predetermined target air-fuel ratio.
摘要翻译：一种用于直喷式火花点火内燃机的控制装置和方法，其中在发动机预热完成之前的条件下进行分层燃烧以提高排气温度。分层燃烧设置有通过在吸入行程处的燃料喷射在整个燃烧室上形成的贫空燃混合物，以及通过燃料喷射形成在燃烧室周围的火花塞周围的内部空间中的浓空气燃料混合物在压缩行程和在吸入行程处的燃料喷射的燃料喷射量。通过使用反馈校正系数来校正压缩冲程的燃料喷射的燃料喷射量，使得整个燃烧室的平均空燃比被控制为预定的目标空燃比。

56. 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。

57. 发明授权

US06263666B1 Exhaust emission control device for internal combustion engine 失效
标题翻译：内燃机废气排放控制装置
公开(公告)号：US06263666B1
公开(公告)日：2001-07-24
申请号：US09527511
申请日：2000-03-16
申请人： Kengo Kubo , Yasuji Ishizuka , Kimiyoshi Nishizawa
发明人： Kengo Kubo , Yasuji Ishizuka , Kimiyoshi Nishizawa
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N13/009 , F01N2250/12 , F01N2550/03 , F01N2570/04 , F02D41/024 , F02D41/028 , F02D41/1463 , F02D2200/0808 , F02D2200/0818 , F02P5/1506 , Y02T10/24 , Y02T10/26 , Y02T10/46
摘要： An exhaust emission control device of an engine 1 comprises an NOx storage catalyst 9 which traps and stores NOx in exhaust gas and reduces the stored NOx according to an air fuel ratio of inflowing exhaust gas. A controller 6 determines conditions for discharging the SOx stored in the catalyst 9. When SOx discharge conditions are satisfied and the engine running conditions are in a predetermined SOx discharge running region, the controller 6 performs SOx discharge control of the catalyst 9. As lean air fuel ratio control is prohibited from when SOx discharge conditions are satisfied to when SOx discharge is complete, lean air fuel ratio control is prevented from taking place when the NOx trapping capacity of the catalyst 9 is insufficient, and increase of exhaust emission is thereby prevented.
摘要翻译：发动机1的废气排放控制装置包括NOx吸留催化剂9，其将废气中的NOx捕集并存储，并且根据流入废气的空燃比减少所存储的NOx。控制器6确定排出存储在催化剂9中的SOx的条件。当满足SOx排放条件并且发动机运行条件处于预定的SOx排放运行区域时，控制器6执行催化剂9的SOx排放控制。作为稀薄空气当SOx放电完成时，当催化剂9的NOx捕集能力不足时，防止发生稀薄空燃比控制，从而防止排气排放增加，从而禁止燃料比控制。

58. 发明授权

US06233923B1 Exhaust emission control device of internal combustion engine 有权
标题翻译：内燃机废气排放控制装置
公开(公告)号：US06233923B1
公开(公告)日：2001-05-22
申请号：US09532325
申请日：2000-03-21
申请人： Hidetoshi Itou , Hideaki Takahashi , Kimiyoshi Nishizawa
发明人： Hidetoshi Itou , Hideaki Takahashi , Kimiyoshi Nishizawa
IPC分类号： F01N300
CPC分类号： F01N3/085 , F01N3/0814 , F01N3/0842 , F01N3/0885 , F01N3/2006 , F01N11/007 , F01N13/009 , F01N2260/04 , F01N2430/06 , F01N2550/02 , F01N2900/0422 , Y02T10/22 , Y02T10/26 , Y02T10/47
摘要： A primary deterioration diagnosis of a front catalyst (8) is performed based on the air-fuel ratio of the exhaust gas downstream of the front catalyst (8) detected in a first period each time the first period elapses when the engine (1) is running in a diagnosis region. A secondary deterioration diagnosis of the front catalyst (8) is performed based on the air-fuel ratio of the exhaust gas downstream of the front catalyst (8) detected in a second period longer than the first period each time the second period elapses when the engine (1) is running in the diagnosis region. When SOx discharge control is performed, primary diagnosis and secondary diagnosis are prohibited, and if it is determined in the primary diagnosis that the front catalyst (8) has deteriorated, SOx discharge control is prohibited to provide an opportunity for secondary diagnosis. In this way, the deterioration diagnosis of the front catalyst (8) can be precisely performed even if there are few opportunities for diagnosis due to lean air-fuel ratio running or SOx discharge control.
摘要翻译：基于当发动机（1）为（1））时，在第一时间段内经过第一时间段时检测到的前催化剂（8）下游排气的空燃比，进行前催化剂（8）的初级劣化诊断在诊断区域运行。基于前述催化剂（8）的下游侧的排气的空燃比，在第二时间段内的第二期间内，在第二期间经过第二期间，进行二次劣化诊断发动机（1）正在诊断区域运行。当执行SOx放电控制时，禁止进行一次诊断和二次诊断，如果在初步诊断中确定前部催化剂（8）劣化，则禁止SOx排出控制以提供二次诊断的机会。以这种方式，即使由于稀薄空燃比运行或SOx排放控制而几乎没有诊断机会，也能够精确地进行前催化剂（8）的劣化诊断。

59. 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。

60. 发明授权

US6116023A Internal combustion engine with NOx absorbent catalyst 失效
标题翻译：具有NOx吸收剂催化剂的内燃机
公开(公告)号：US6116023A
公开(公告)日：2000-09-12
申请号：US93305
申请日：1998-06-09
申请人： Yasuji Ishizuka , Kimiyoshi Nishizawa
发明人： Yasuji Ishizuka , Kimiyoshi Nishizawa
IPC分类号： B01D53/86 , B01D53/94 , F01N3/08 , F01N3/24 , F01N13/02 , F02D41/02 , F02D41/04 , F02D41/14 , F01N3/10
CPC分类号： B01D53/9481 , B01D53/8696 , B01D53/9495 , F01N13/009 , F02D41/0275 , F02D41/1441 , B01D53/945 , F01N2250/12 , F01N2430/06 , F01N3/0842 , Y02T10/22
摘要： For proper treatment of NOx released from NOx absorbent catalyst as well as HC and CO in exhaust gas, a measure of A/F of exhaust gas downstream of the NOx absorbent is used as the input to a feedback control loop. The feedback control loop alters a feedback correction factor (or coefficient) of a fuel control command applied to each fuel injector in such a direction to decrease a deviation of the actual A/F input from a target A/F (stoichiometry or rich) When the measure of A/F has switched the side to rich, a measure of A/F of exhaust gas upstream of the NOx absorbent catalyst is used as the input to perform usual feedback control loop to maintain lean combustion mode.
摘要翻译：为了正确处理从NOx吸收剂催化剂以及废气中的HC和CO释放的NO x，使用NOx吸收剂下游的废气的A / F的量度作为反馈控制回路的输入。反馈控制环路改变施加到每个燃料喷射器的燃料控制命令的反馈校正因子（或系数），以减小实际A / F输入与目标A / F（化学计量或浓度）的偏差。 A / F的测量将侧面转换为丰富度，将NOx吸收剂催化剂上游的废气的A / F的量度用作输入，以执行通常的反馈控制回路以保持稀薄燃烧模式。

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