公开(公告)号：US06209515B1

公开(公告)日：2001-04-03

申请号：US09348282

申请日：1999-07-07

申请人： Masato Gotoh ,  Shizuo Sasaki ,  Kouji Yoshizaki ,  Takekazu Ito ,  Hiroki Murata

发明人： Masato Gotoh ,  Shizuo Sasaki ,  Kouji Yoshizaki ,  Takekazu Ito ,  Hiroki Murata

IPC分类号： F02D4138

CPC分类号： F02D41/0007 ,  F02B29/0406 ,  F02D41/0057 ,  F02D41/38 ,  F02D41/40 ,  F02M26/06 ,  F02M26/15 ,  F02M2026/009 ,  Y02T10/144 ,  Y02T10/44 ,  Y02T10/47

摘要： A stable combustion without generating smoke or misfire is performed by selectively conducting a first combustion mode and a second combustion mode. In the first combustion mode, an amount of an inert gas, e.g., EGR gas, provided to a combustion chamber is made to be larger than an amount of the inert gas that causes the generation amount of soot to become a peak amount. This causes substantially no soot to be generated. In the second combustion mode, the amount of the inert gas provided to the combustion chamber is made to be smaller than the amount that causes the generation amount of soot to become a peak amount. The injection timing is quickened if the injection amount is increased in the first combustion mode, and the injection timing is delayed if the injection amount is reduced.

摘要翻译： 通过选择性地进行第一燃烧模式和第二燃烧模式来执行不产生烟雾或失火的稳定燃烧。 在第一燃烧模式中，设置到燃烧室的惰性气体（例如EGR气体）的量大于使烟尘产生量成为峰值的惰性气体的量。 这基本上不产生烟灰。 在第二燃烧模式中，使提供给燃烧室的惰性气体的量小于使烟尘产生量成为峰值的量。 如果在第一燃烧模式下喷射量增加，则喷射正时加快，并且如果喷射量减少则喷射定时被延迟。

公开(公告)号：US06192675B1

公开(公告)日：2001-02-27

申请号：US09184047

申请日：1998-11-02

申请人： Shinya Hirota ,  Toshiaki Tanaka ,  Kouji Yoshizaki ,  Nobumoto Ohashi ,  Eiji Iwasaki ,  Kazuhiro Itoh

发明人： Shinya Hirota ,  Toshiaki Tanaka ,  Kouji Yoshizaki ,  Nobumoto Ohashi ,  Eiji Iwasaki ,  Kazuhiro Itoh

IPC分类号： F01N300

CPC分类号： F01N3/2066 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/2053 ,  F01N13/0097 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/04 ,  F02B37/18 ,  Y02T10/144 ,  Y02T10/24

摘要： In an exhaust gas purification device, a catalytic converter containing selective reduction catalysts is disposed in an exhaust gas passage of an internal combustion engine capable of being operated at a lean air-fuel ratio. The catalytic converter includes a plurality of the selective reduction catalysts disposed in series in the casing of the catalytic converter. Bypass passages which supply the exhaust gas to downstream selective reduction catalysts in the casing by bypassing the upstream catalysts are provided. When a reducing agent is supplied to the exhaust gas upstream of the converter, a part of the supplied reducing agent directly reaches the downstream selective reduction catalyst through the bypass passages without being oxidized by the upstream selective reduction catalysts. Therefore, the NOx purifying abilities of the downstream catalysts are improved and the formation of sulfates on the downstream catalysts is suppressed.

摘要翻译： 在废气净化装置中，含有选择还原催化剂的催化转化器设置在能够以稀薄空燃比运转的内燃机的排气通路中。 催化转化器包括多个选择性还原催化剂串联设置在催化转化器的壳体中。 提供了通过绕过上游催化剂将排气供给到壳体中的下游选择性还原催化剂的旁路通道。 当还原剂被供给到转化器上游的废气时，所供给的还原剂的一部分通过旁路通道直接到达下游选择还原催化剂，而不被上游选择还原催化剂氧化。 因此，下游催化剂​​的NOx净化能力得到改善，并且抑制了下游催化剂​​上形成硫酸盐。

公开(公告)号：US5235956A

公开(公告)日：1993-08-17

申请号：US917220

申请日：1992-07-23

申请人： Kouji Yoshizaki

发明人： Kouji Yoshizaki

IPC分类号： F01N3/22 ,  F01N3/32 ,  F01N9/00 ,  F02D35/00 ,  F02D43/00

CPC分类号： F01N3/222 ,  F01N3/22 ,  F01N9/00 ,  F02D35/0038 ,  F01N2390/02 ,  Y02T10/22 ,  Y02T10/47

摘要： A secondary air feeding device comprising an air pump for feeding secondary air into the exhaust passage upstream of the three way catalytic converter. The air-fuel ratio is normally maintained at the stoichiometric air-fuel ratio by a feedback control. When the amount of fuel is to be increased, the feedback control is stopped, and the supply of secondary air is started. At this time, the amount of secondary air is basically calculated from the amount of fuel fed into the engine.

摘要翻译： 二次空气供给装置，包括用于将二次空气供给到三元催化转化器上游的排气通道的空气泵。 通过反馈控制，空燃比通常保持在理论空燃比。 当要增加燃料量时，反馈控制停止，二次空气的供应开始。 此时，二次空气的量​​基本上由供给到发动机的燃料量计算出。

公开(公告)号：USH1113H

公开(公告)日：1992-12-01

申请号：US839625

申请日：1992-02-21

申请人： Kouji Yoshizaki

发明人： Kouji Yoshizaki

IPC分类号： F01N3/20 ,  F01N9/00

CPC分类号： F01N9/00 ,  F01N3/2013 ,  F01N2390/02 ,  Y02T10/26 ,  Y02T10/47

摘要： A catalyst heating apparatus includes an electrically heated catalyst converter mounted in an exhaust passage of an internal combustion engine, the catalyst converter having a catalyst and a heating element for electrically heating the catalyst so that catalytic conversion of exhaust gases from the engine is carried out, a capacitor that is charged with electric power, in advance, before an ignition switch is turned on for starting operation of the engine, and a controller for applying a terminal voltage of the capacitor to the heating element of the catalyst converter when the ignition switch is turned on, so that a temperature of the heating element is increased owing to electric energy supplied from the capacitor to the converter through the controller for accelerating the rate of the catalytic conversion of the exhaust gases.

公开(公告)号：US20070034177A1

公开(公告)日：2007-02-15

申请号：US10577937

申请日：2005-03-18

申请人： Kouji Yoshizaki

发明人： Kouji Yoshizaki

IPC分类号： F02B75/22 ,  F02D41/38

CPC分类号： F02D41/20 ,  F02B75/22 ,  F02D41/266 ,  F02D41/402 ,  F02D41/405 ,  Y02T10/44

摘要： Even in a construction in which fuel injection valves for eight cylinders are energized by two EDUs, a sufficient charging time for each EDU can be ensured. In an eight-cylinder engine including fuel injection valves provided one for each cylinder of the eight-cylinder engine for injecting fuel thereinto, a first valve drive unit for driving four of the eight fuel injection valves to open and close by energizing these four fuel injection valves; and a second valve drive unit for driving four fuel injection valves other than the first-mentioned four fuel injection valves to open and close by energizing the second-mentioned four fuel injection valves, both of the valve drive units drive those fuel injection valves which are provided on cylinders for which combustion and expansion strokes occur at equal intervals. For example, the first valve drive unit energizes those fuel injection valves which are provided on a first cylinder, a fourth cylinder, a sixth cylinder, and a seventh cylinder, and the second valve drive unit energizes those fuel injection valves which are provided on a second cylinder, a third cylinder, a fifth cylinder, and an eighth cylinder.

摘要翻译： 即使在通过两个EDU激励八个气缸的燃料喷射阀的结构中，也可以确保每个EDU的足够的充电时间。 在包括燃料喷射阀的八缸发动机中，包括一个用于喷射燃料的八缸发动机的每个气缸的燃料喷射阀，第一阀驱动单元，用于驱动八个燃料喷射阀中的四个以通过激励这四个燃料喷射来打开和关闭 阀门 以及第二阀驱动单元，用于驱动除了首先提到的四个燃料喷射阀之外的四个燃料喷射阀，以通过激励第二个四个燃料喷射阀来打开和关闭，两个阀驱动单元驱动那些燃料喷射阀 燃烧和膨胀冲程以相等的间隔发生在气缸上。 例如，第一阀驱动单元对设置在第一气缸，第四气缸，第六气缸和第七气缸上的那些燃料喷射阀通电，并且第二气门驱动单元使设在燃料喷射阀 第二气缸，第三气缸，第五气缸和第八气缸。

公开(公告)号：US20050229903A1

公开(公告)日：2005-10-20

申请号：US10527232

申请日：2003-09-08

申请人： Nobuki Kobayashi ,  Shizuo Sasaki ,  Taro Aoyama ,  Kouji Yoshizaki ,  Hiroki Murata ,  Yoshiki Hashimoto ,  Kazuhisa Inagaki ,  Kiyomi Nakakita ,  Shoji Nakahara ,  Yoshihiro Hotta

发明人： Nobuki Kobayashi ,  Shizuo Sasaki ,  Taro Aoyama ,  Kouji Yoshizaki ,  Hiroki Murata ,  Yoshiki Hashimoto ,  Kazuhisa Inagaki ,  Kiyomi Nakakita ,  Shoji Nakahara ,  Yoshihiro Hotta

IPC分类号： F02B3/06 ,  F02D21/08 ,  F02D35/02 ,  F02D41/00 ,  F02D41/30 ,  F02D41/38 ,  F02D41/40 ,  F02M7/00 ,  F02M25/07

CPC分类号： F02D41/0052 ,  F02B3/06 ,  F02D35/023 ,  F02D35/028 ,  F02D41/3035 ,  F02D41/3064 ,  F02D41/38 ,  F02D41/3809 ,  F02D41/402 ,  Y02T10/128 ,  Y02T10/44 ,  Y02T10/47

摘要： Cylinders of a diesel engine 1 are provided with cylinder pressure sensors 29a to 29d for detecting combustion chamber pressures. An electronic control unit (ECU) 20 of the engine selects optimum combustion parameters in accordance with a fuel injection mode of fuel injectors 10a to 10d of the engine and a combustion mode determined by the amount of EGR gas supplied from the EGR valve 35 from among a plurality of types of combustion parameters expressing the combustion state of the engine calculated based on the cylinder pressure sensor output and feedback controls the fuel injection amount and fuel injection timing so that the values of the combustion parameters match target values determined in accordance with the engine operating conditions. Due to this, the engine combustion state is controlled to the optimum state at all times regardless of the fuel injection mode or combustion mode.

摘要翻译： 柴油发动机1的气缸设置有用于检测燃烧室压力的气缸压力传感器29a至29d。 发动机的电子控制单元（ECU）20根据发动机的燃料喷射器10 a至10 d的燃料喷射模式选择最佳燃烧参数，以及由从EGR阀35供给的EGR气体量确定的燃烧模式 从表示基于气缸压力传感器输出计算出的发动机的燃烧状态的多种燃烧参数中，从燃料喷射量和燃料喷射正时控制燃烧参数的值符合根据 发动机工作条件。 由此，无论燃料喷射模式或燃烧模式如何，始终将发动机燃烧状态始终控制在最佳状态。

公开(公告)号：US06715474B1

公开(公告)日：2004-04-06

申请号：US09831559

申请日：2001-05-11

申请人： Shizuo Sasaki ,  Masato Gotoh ,  Takekazu Ito ,  Kouji Yoshizaki ,  Hiroki Murata

发明人： Shizuo Sasaki ,  Masato Gotoh ,  Takekazu Ito ,  Kouji Yoshizaki ,  Hiroki Murata

IPC分类号： F02M2507

CPC分类号： F02D41/3035 ,  F02D41/0057 ,  F02D41/3064 ,  F02D41/401 ,  F02D2041/389 ,  F02M26/00 ,  F02M26/06 ,  F02M26/23 ,  F02M26/33 ,  Y02T10/22 ,  Y02T10/44 ,  Y02T10/47

摘要： An engine where first combustion where the amount of the EGR gas in the combustion chamber is larger than the amount of EGR where the amount of production of soot peaks and almost no soot is produced and a second combustion where the amount of EGR gas in the combustion chamber (5) is smaller than the amount of EGR gas where the amount of production of soot peaks are selectively switched between. When switching between the first combustion and second combustion, the injection timing is delayed until after top dead center of the compression stroke,

摘要翻译： 一种发动机，其中燃烧室中的EGR气体的量大于产生烟灰产生量并且几乎不产生烟灰的EGR量的第一燃烧和第二燃烧，其中燃烧中的EGR气体的量 室（5）小于在其间选择性地切换烟灰峰的产生量的EGR气体的量。 当在第一燃烧和第二燃烧之间切换时，喷射定时被延迟直到压缩冲程的上止点为止，

公开(公告)号：US06591818B2

公开(公告)日：2003-07-15

申请号：US09880110

申请日：2001-06-14

申请人： Shizuo Sasaki ,  Kouji Yoshizaki ,  Masato Gotoh ,  Takekazu Ito

发明人： Shizuo Sasaki ,  Kouji Yoshizaki ,  Masato Gotoh ,  Takekazu Ito

IPC分类号： F02M2507

CPC分类号： F02D41/0255 ,  F01N3/2006 ,  F02D41/0057 ,  F02M26/05 ,  F02M26/10 ,  F02M26/23 ,  F02M26/33 ,  F02M26/35 ,  Y02T10/26 ,  Y02T10/47

摘要： An internal combustion engine performs a second mode of combustion where the EGR is less than the EGR gas that peaks the production of soot. The engine then performs a first mode of combustion where the EGR is greater than the EGR that peaks the production of soot. During the second mode, the engine curbs hydrocarbon supplied to an exhaust gas control catalyst by performing a combustion where hydrocarbon does not increase. The exhaust gas temperature discharged becomes relatively high and the EGR rate is set to zero. The engine then increases the hydrocarbon supplied to the catalyst by performing a combustion that increases the hydrocarbon. The temperature of exhaust gas discharged becomes relatively high, and the EGR rate is gradually increased. Accordingly, the engine quickly warms up the catalyst while preventing problems that occur, like clogging of an exhaust gas recirculation passage.

摘要翻译： 内燃机执行第二燃烧模式，其中EGR小于使烟灰产生达到峰值的EGR气体。 然后，发动机执行第一燃烧模式，其中EGR大于产生烟灰的EGR。 在第二模式中，发动机通过进行不增加烃的燃烧来控制供给排气控制催化剂的碳氢化合物。 排放的废气温度相对较高，EGR率设定为零。 然后，发动机通过进行增加烃的燃烧来增加供应给催化剂的烃。 废气排放的温度相对较高，EGR率逐渐增加。 因此，发动机可以在防止出现诸如排气再循环通道堵塞的问题的同时快速加热催化剂。

公开(公告)号：US5537321A

公开(公告)日：1996-07-16

申请号：US135441

申请日：1993-10-13

申请人： Kouji Yoshizaki ,  Hiroshi Tanaka

发明人： Kouji Yoshizaki ,  Hiroshi Tanaka

IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N3/28 ,  F01N9/00 ,  F01N13/02 ,  G06F19/00 ,  F01N3/00

CPC分类号： F01N3/2026 ,  F01N13/009 ,  F01N3/2807 ,  F01N9/00 ,  F01N3/22 ,  Y02T10/26 ,  Y02T10/47

摘要： An exhaust gas purifying apparatus mounted in an vehicular engine, which includes a detector for detecting the actuated condition of a catalyst. Injectors for fuel injection are disposed along an air intake passage of the engine and plurality of catalysts are provided along an exhaust gas passage. A catalyst incorporating an electrical heater is disposed at the most upper stream side thereof. A secondary air source can be supplied into the inlet port of the heatable catalyst by means of secondary air supply mechanism. To determine the activated condition of the catalyst, a temperature sensor is provided to the catalyst. An electronic control unit (ECU) controls the injectors, secondary air supply mechanism, and heatable catalyst when the engine is initiated in the cold state. The ECU computes a temperature change rate of the catalyst based upon a value detected by the temperature sensor while secondary air supply is provided into the inlet port of the heatable catalyst. When the computed temperature change rate is increased, the ECU determines that the heatable catalyst has been actuated and the ECU correctly increases the volume of fuel to be injected through the injectors. Therefore, the catalyst's actuation can be detected without providing a plurality of temperature sensors. Furthermore, no volume of fuel exceeding the required amount is supplied to the engine before the catalyst is actuated.

摘要翻译： 一种安装在车辆发动机中的废气净化装置，其包括用于检测催化剂的致动状态的检测器。 用于燃料喷射的喷射器沿着发动机的进气通道设置，并且沿排气通道设置多个催化剂。 包含电加热器的催化剂设置在其最上游侧。 可以通过二次空气供给机构将二次空气源供给到可加热催化剂的入口。 为了确定催化剂的活化状态，向催化剂提供温度传感器。 当发动机处于冷态时，电子控制单元（ECU）控制喷射器，二次空气供应机构和可加热催化剂。 ECU根据由温度传感器检测出的值，计算催化剂的温度变化率，同时将二次空气供给到可加热催化剂的入口。 当计算出的温度变化率增加时，ECU确定可加热催化剂已被致动，并且ECU正确地增加通过喷射器喷射的燃料的体积。 因此，可以在不设置多个温度传感器的情况下检测催化剂的致动。 此外，在催化剂被致动之前，没有超过所需量的燃料的体积被提供给发动机。

公开(公告)号：US5456063A

公开(公告)日：1995-10-10

申请号：US89143

申请日：1993-07-07

申请人： Kouji Yoshizaki ,  Hiroshi Tanaka

发明人： Kouji Yoshizaki ,  Hiroshi Tanaka

IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N3/28 ,  F01N3/32 ,  F01N9/00 ,  F01N13/02 ,  F02B1/04

CPC分类号： F01N3/222 ,  F01N13/009 ,  F01N3/2006 ,  F01N3/2026 ,  F01N3/22 ,  F01N3/227 ,  F01N3/281 ,  F01N3/32 ,  F02B1/04 ,  Y02T10/26

摘要： An apparatus for supplying the secondary air to a catalyst in an exhaust gas passage is disclosed. An electric heater is fixed to the catalyst to which the secondary air is supplied by an electric air pump. The heater and the air pump are connected with a battery through relay contacts, respectively. During the cold operation of the engine, an electric control unit switches on/off the relay contacts, so as to actuate the air pump prior to the heater and stop the air pump after the heater. The secondary air is supplied to the catalyst when the temperature of catalyst is raised up to the activating point.

摘要翻译： 公开了一种用于将二次空气供应到废气通道中的催化剂的装置。 将电加热器固定在由电动空气泵供给二次空气的催化剂上。 加热器和空气泵分别通过继电器触点与电池连接。 在发动机的冷运行期间，电气控制单元接通/关闭继电器触点，以便在加热器之前致动空气泵并且在加热器之后停止空气泵。 当催化剂的温度上升到激活点时，二次空气被供给催化剂。