公开(公告)号：US06240721B1

公开(公告)日：2001-06-05

申请号：US09377618

申请日：1999-08-19

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

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

IPC分类号： F01N300

CPC分类号： F02D41/403 ,  F02B3/06 ,  F02B47/08 ,  F02D41/0057 ,  F02D41/024 ,  F02D41/1475 ,  F02D41/401 ,  F02D41/402 ,  F02D2200/0802 ,  Y02T10/26 ,  Y02T10/44

摘要： A first combustion mode in which an amount of an EGR gas within a combustion chamber is higher than that of the EGR gas when a generated amount of soot reaches a peak and substantially no soot is generated. A second combustion mode in which the amount of the EGR gas within the combustion chamber is lower than that of the EGR gas when the generated amount of soot reaches the peak are selectively performed. A catalyst is disposed within an engine exhaust passage wherein a temperature of the catalyst is adjusted so as to be within a predetermined range.

摘要翻译： 第一燃烧模式，其中当产生的烟灰量达到峰值并且基本上不产生烟灰时，燃烧室内的EGR气体的量高于EGR气体的量。 选择性地执行当产生的烟灰量达到峰值时，燃烧室内的EGR气体的量低于EGR气体的量的第二燃烧模式。 催化剂设置在发动机排气通道内，其中催化剂的温度被调节到预定范围内。

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：US6152118A

公开(公告)日：2000-11-28

申请号：US330100

申请日：1999-06-11

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

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

IPC分类号： F02D21/08 ,  F02D41/02 ,  F02D41/30 ,  F02M25/07 ,  F01N3/20

CPC分类号： F02D41/3011 ,  F02D21/08 ,  F02D41/0275 ,  F02B29/0406 ,  F02D2200/0806 ,  F02M26/06 ,  F02M26/15 ,  F02M26/23

摘要： An internal combustion engine that selectively switches from a first combustion in which an amount of an exhaust gas recirculation gas within a combustion chamber is more than the amount of the exhaust gas recirculation gas when an amount of soot generated reaches a peak amount to generate substantially no soot, that is, a low temperature combustion, and a second combustion in which the amount of the exhaust gas recirculation gas within the combustion chamber is less than the amount of the exhaust gas recirculation gas when the amount of soot generated reaches the peak amount. The switching is selectively performed, such that, a stable low temperature combustion corresponding to the air fuel ratio is performed by shifting the area for performing the low temperature combustion to the high load side as the air fuel ratio is reduced.

摘要翻译： 一种内燃机，其选择性地从第一燃烧转换，其中当产生的烟灰量达到峰值时，燃烧室内的废气再循环气体的量大于废气再循环气体的量，以产生基本上不产生 烟炱，即低温燃烧，以及第二燃烧，其中当产生的烟炱量达到峰值时，燃烧室内的废气再循环气体的量小于废气再循环气体的量。 选择性地执行切换，使得通过将空气燃料比降低到低负荷侧，进行与空燃比对应的稳定的低温燃烧。

公开(公告)号：US06216676B1

公开(公告)日：2001-04-17

申请号：US09394919

申请日：1999-09-13

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： F02M2507

CPC分类号： F02D41/0057 ,  F02D41/1454 ,  F02D41/3076 ,  F02D41/3827 ,  F02D2200/701 ,  F02D2200/702 ,  Y02T10/47

摘要： An internal combustion engine system is capable of reducing soot and NOx simultaneously, and prevents the occurrence of an undesirable situation where a generation amount of soot is increased in accordance with frequent transitions between a first combustion mode and a second combustion mode. In the system, the first combustion mode in which an amount of inert gas supplied to the combustion chamber is larger than an amount of the inert gas that causes the generation amount of soot to become a peak, such that soot is hardly generated, and a second combustion mode in which an amount of the inert gas supplied to the combustion chamber is smaller than the amount of the inert gas that causes the generation amount of soot to become a peak, are selectively performed. When conditions are such that switching between the first combustion mode and the second combustion mode has or may occur frequently, the execution of the first combustion mode is controlled. The frequency of switching can be determined, for example, based on a frequency of change of the engine load, an operational state of the engine, or road information.

摘要翻译： 内燃机系统能够同时减少煤烟和NOx，并且防止发生根据第一燃烧模式和第二燃烧模式之间的频繁转变而产生烟灰产生量的不期望的情况。 在该系统中，供给到燃烧室的惰性气体的量大于使烟尘的产生量成为峰值的惰性气体的量的第一燃烧模式，从而几乎不产生烟灰， 选择性地进行向燃烧室供给的惰性气体量少于使烟尘产生量成为峰值的惰性气体量的第二燃烧模式。 当条件使得在第一燃烧模式和第二燃烧模式之间的切换已经或可能频繁地发生时，控制第一燃烧模式的执行。 可以例如基于发动机负载的变化频率，发动机的运行状态或道路信息来确定切换频率。

公开(公告)号：US06634345B2

公开(公告)日：2003-10-21

申请号：US09853157

申请日：2001-05-11

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

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

IPC分类号： F02M25107

CPC分类号： F02D41/024 ,  F02B3/06 ,  F02D41/0057 ,  F02D2041/0017 ,  F02D2041/0022 ,  F02M26/05 ,  F02M26/10 ,  F02M26/25 ,  F02M26/28 ,  F02M26/33 ,  F02M26/35 ,  Y02T10/26 ,  Y02T10/47

摘要： An internal combustion engine has an EGR passage provided with an EGR control valve and a catalyst for purifying the EGR gas. When the internal combustion engine operates in a low-temperature combustion mode in which the amount of EGR gas supplied to a combustion chamber is larger than that of EGR gas with which the amount of soot produced reaches a peak, and almost no soot is produced, a controller reduces an opening amount of the exhaust gas recirculation control valve so as to increase an exhaust gas temperature, and reduces an opening amount of the throttle valve so as to suppress an increase in the amount of the EGR gas, thereby to reduce reductions in the temperature of the EGR gas and the temperature of the catalyst.

摘要翻译： 内燃机具有设置有EGR控制阀和用于净化EGR气体的催化剂的EGR通路。 当内燃机在供给到燃烧室的EGR气体的量大于产生的烟灰量达到峰值的EGR气体的低温燃烧模式下工作，并且几乎不产生烟灰时， 控制器减少废气再循环控制阀的打开量，从而增加排气温度，并且减小节流阀的打开量，以便抑制EGR气体的量的增加，由此减少 EGR气体的温度和催化剂的温度。

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：US06276130B1

公开(公告)日：2001-08-21

申请号：US09496348

申请日：2000-02-02

申请人： Takekazu Ito ,  Shizuo Sasaki ,  Kouji Yoshizaki

发明人： Takekazu Ito ,  Shizuo Sasaki ,  Kouji Yoshizaki

IPC分类号： F02M2506

CPC分类号： F02B37/00 ,  F01N3/0821 ,  F01N3/0842 ,  F01N3/0885 ,  F01N9/002 ,  F01N2570/04 ,  F02B3/06 ,  F02D41/0057 ,  F02D41/028 ,  F02D41/40 ,  F02D41/402 ,  F02D41/405 ,  F02D2250/11 ,  F02M26/06 ,  F02M26/15 ,  Y02T10/144 ,  Y02T10/20 ,  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 a second combustion where the amount of EGR gas in the combustion chamber is smaller than the amount of EGR gas where the amount of production of soot peaks are selectively switched between and where an NOx absorbent is placed in the exhaust passage of the engine. When SOx should be released from the NOx absorbent, the first combustion is performed under a rich air-fuel ratio, while when the second combustion is performed, auxiliary fuel is injected during the first part of the suction stroke or the expansion stroke and the injection timing of the main fuel is delayed by a large extent.

摘要翻译： 一种发动机，其中燃烧室中的EGR气体的量大于其中烟灰产生量峰值的EGR量和燃烧室中的EGR气体量的第二燃烧量的第一燃烧， 的EGR气体，其中烟炱峰的产生量选择性地在发动机的排气通道中放置NOx吸收剂之间切换。 当SO x应从NOx吸收剂释放时，第一次燃烧是在浓空燃比下进行的，而在进行第二次燃烧时，辅助燃料在吸入冲程或膨胀冲程的第一部分和注入 主要燃料的时间在很大程度上被延迟。

公开(公告)号：US06804952B2

公开(公告)日：2004-10-19

申请号：US10369629

申请日：2003-02-21

申请人： Shizuo Sasaki ,  Kouji Yoshizaki ,  Nobuki Kobayashi ,  Yoshiki Hashimoto

发明人： Shizuo Sasaki ,  Kouji Yoshizaki ,  Nobuki Kobayashi ,  Yoshiki Hashimoto

IPC分类号： F01N300

CPC分类号： F02D41/0057 ,  F02D41/0255 ,  F02D41/3035 ,  F02D41/3076 ,  F02D2200/0802 ,  F02P19/026 ,  Y02T10/26 ,  Y02T10/47

摘要： Diesel engine is operated in a first warm-up mode in an early warm-up period after startup so as to accelerate activation of the catalyst, and then in a second warm-up mode in a late warm-up period after the early warm-up period so as to maintain activity of the catalyst. The first warm-up mode provides more energy to the catalyst with exhaust gases than the normal operation mode of the diesel engine. The second warm-up mode provides exhaust gases of higher temperature to the catalyst than the normal operation mode.

摘要翻译： 柴油发动机在启动后的早期预热期间以第一预热模式运行，以加速催化剂的活化，然后在早期预热后的预热期间的第二预热模式中， 以保持催化剂的活性。 第一个预热模式为催化剂提供比柴油发动机的正常运行模式更多的能量。 第二预热模式提供比正常操作模式更高温度的催化剂废气。

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。