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    Exhaust gas purification device for an internal combustion engine
    3.
    发明授权
    Exhaust gas purification device for an internal combustion engine 失效
    内燃机用废气净化装置

    公开(公告)号：US5974794A

    公开(公告)日：1999-11-02

    申请号：US54172

    申请日：1998-04-02

    申请人： Masato Gotoh ,  Kenji Katoh ,  Takamitsu Asanuma

    发明人： Masato Gotoh ,  Kenji Katoh ,  Takamitsu Asanuma

    IPC分类号： F02D45/00 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F02D41/00 ,  F02D41/02 ,  F02D41/04 ,  F01N3/00

    CPC分类号： F02D41/042 ,  B01D53/9422 ,  B01D53/9481 ,  B01D53/9495 ,  F01N3/0238 ,  F01N3/0842 ,  F01N3/0885 ,  F02D41/0275 ,  B01D2255/1021 ,  B01D2255/2042 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2610/04

    摘要： The exhaust gas purification device includes a NO.sub.x absorbent disposed in an exhaust gas passage of an internal combustion engine. The engine is mainly operated at a lean air-fuel ratio. The NO.sub.x absorbent absorbs NO.sub.x in the exhaust gas from the engine when the exhaust gas flowing into the NO.sub.x absorbent is at a lean air-fuel ratio, and releases the NO.sub.x absorbed therein and reduces it when the air-fuel ratio of the exhaust gas becomes a rich air-fuel ratio. A control circuit is provided for controlling the operating air-fuel ratio of the engine. When the ignition switch of the engine is turned off, the control circuit continues the engine operation for a predetermined period before terminating the engine operation. During this engine operation, the operating air-fuel ratio of the engine is controlled at a rich air-fuel ratio to supply exhaust gas with a rich air-fuel ratio to the NO.sub.x absorbent. Therefore, NO.sub.x absorbed and held therein when the ignition switch is turned off is released and reduced by the rich air-fuel ratio exhaust gas from the engine. Since the NO.sub.x absorbent is maintained at the condition where no NO.sub.x remains in the NO.sub.x absorbent after the engine has stopped, unreduced NO.sub.x is not released from the NO.sub.x absorbent even if the NO.sub.x absorbent is cooled after the engine has stopped.

    摘要翻译： 废气净化装置包括设置在内燃机的废气通道中的NOx吸收剂。 发动机主要运行在稀薄的空燃比。 当排入NOx吸收剂的排气处于稀薄的空燃比时，NOx吸收剂吸收来自发动机的废气中的NOx，并且当排气的空燃比变为 丰富的空燃比。 提供控制电路用于控制发动机的运转空燃比。 当发动机的点火开关关闭时，控制电路在终止发动机运转之前，继续发动机运转一段预定的时间。 在该发动机运转中，将发动机的运转空燃比控制在较大的空燃比，以向NOx吸收剂供给浓空燃比的排气。 因此，当点火开关关闭时吸收并保持的NOx被释放并由来自发动机的富空燃比废气减少。 由于NOx吸收剂在发动机停止之后保持在NOx吸收剂中不存在NOx的状态，所以即使在发动机停止后NOx吸收剂被冷却，未还原的NOx也不会从NOx吸收剂中释放。

    Apparatus and method for purifying exhaust gas in an internal combustion engine
    4.
    发明授权
    Apparatus and method for purifying exhaust gas in an internal combustion engine 失效
    一种用于净化内燃机废气的装置和方法

    公开(公告)号：US5848529A

    公开(公告)日：1998-12-15

    申请号：US933618

    申请日：1997-09-08

    申请人： Kenji Katoh ,  Masato Gotoh ,  Takamitsu Asanuma

    发明人： Kenji Katoh ,  Masato Gotoh ,  Takamitsu Asanuma

    IPC分类号： F01L1/34 ,  F01N3/08 ,  F01N3/10 ,  F01N3/24 ,  F01N3/28 ,  F02D13/02 ,  F02D41/00 ,  F02D41/02 ,  F02D41/04 ,  F01N3/00

    CPC分类号： F02D13/0215 ,  F01L1/34 ,  F01N3/0842 ,  F02D13/0261 ,  F02D41/0002 ,  F02D41/0275 ,  F01L2201/00 ,  F02D2013/0292 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/42

    摘要： An apparatus for, and a method of, purifying exhaust gas emitted from an internal combustion engine reduces fuel consumption under a lean operating condition and generates high torque under a rich operating condition without deteriorating the cleanness of exhaust gas and the driveability of the engine. The apparatus and method improve the durability of a variable valve timing mechanism of the engine. The engine operation involves lean and rich operating conditions. The variable valve timing mechanism of the apparatus changes the open and close timing of at least one of intake and exhaust valves of the engine. The apparatus further has a catalytic converter in an exhaust system, to occlude NOx under the lean operating condition and discharge and reduce the occluded NOx under the rich operating condition. The apparatus also has a prohibition unit for prohibiting the variable valve timing mechanism from changing the valve open and close timing of the valves when the air-fuel ratio of the engine is changed from lean to rich to discharge and reduce the occluded NOx.

    摘要翻译： 用于净化从内燃机排出的废气的装置和方法，在稀薄运行状态下降低燃料消耗，并且在丰富的运行状态下产生高扭矩，而不会降低排气的清洁度和发动机的驱动性。 该装置和方法提高了发动机的可变气门正时机构的耐久性。 引擎操作涉及精益和丰富的操作条件。 该装置的可变气门正时机构改变发动机的进气门和排气门中的至少一个的打开和关闭正时。 该装置还具有排气系统中的催化转化器，以在稀薄运行状态下封闭NOx，并在富运行条件下排放并减少封闭的NOx。 该装置还具有禁止单元，用于当发动机的空燃比从稀燃变为浓度以排出并且减少封闭的NOx时，禁止可变气门正时机构改变阀的开阀和关闭正时。

    Internal combustion engine
    6.
    发明授权
    Internal combustion engine 有权
    内燃机

    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。

    Internal combustion engine system
    8.
    发明授权
    Internal combustion engine system 失效
    内燃机系统

    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。

    Fuel injection control system for a diesel engine
    9.
    发明授权
    Fuel injection control system for a diesel engine 失效
    柴油机燃油喷射控制系统

    公开(公告)号：US6016788A

    公开(公告)日：2000-01-25

    申请号：US109417

    申请日：1998-07-02

    申请人： Kazuya Kibe ,  Masato Gotoh ,  Tatsuji Mizuno

    发明人： Kazuya Kibe ,  Masato Gotoh ,  Tatsuji Mizuno

    IPC分类号： F02M25/07 ,  F02B3/06 ,  F02D21/08 ,  F02D41/00 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14 ,  F02D41/38 ,  F02D43/00

    CPC分类号： F02D41/0052 ,  F02D41/38 ,  F02B3/06 ,  F02D2041/0017 ,  F02D2041/0022 ,  F02D2250/38 ,  F02D41/18 ,  Y02T10/42 ,  Y02T10/47

    摘要： In a fuel injection control system, a throttle valve is provided on the intake air passage of a diesel engine and an EGR control valve is provided for recycling a part of the engine exhaust gas to the intake air system of the engine. An engine control unit (ECU) controls the intake air amount of the engine to a value corresponding to the engine operating condition by adjusting the throttle valve and the EGR control valve. Further, the ECU detects the actual intake air amount by an airflow meter disposed at the inlet of the intake air passage and determines the maximum fuel injection amount based on the engine speed and the actual intake air amount. The maximum fuel injection amount is the maximum amount of the fuel which does not generate the exhaust smoke. By restricting the actual fuel injection amount so that the actual fuel injection amount does not exceed the maximum fuel injection amount, the generation of the exhaust smoke is prevented in transient operating conditions of the engine regardless of a delay in the response of the EGR control valve.

    摘要翻译： 在燃料喷射控制系统中，在柴油发动机的进气通道上设置有节流阀，并且设置有用于将发动机排气的一部分再循环到发动机的进气系统的EGR控制阀。 发动机控制单元（ECU）通过调节节流阀和EGR控制阀将发动机的进气量控制在与发动机运转状态对应的值。 此外，ECU通过设置在进气通道的入口处的气流计检测实际进气量，并且基于发动机速度和实际进气量来确定最大燃料喷射量。 最大燃料喷射量是不产生排气烟的燃料的最大量。 通过限制实际燃料喷射量使得实际燃料喷射量不超过最大燃料喷射量，在发动机的瞬态操作条件下防止排气烟的产生，而与EGR控制阀的响应延迟无关 。

    Internal combustion engine and method for controlling the internal combustion engine
    10.
    发明授权
    Internal combustion engine and method for controlling the internal combustion engine 失效
    内燃机及内燃机控制方法

    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。