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    • 2. 发明授权
    • Exhaust gas purification device
    • 废气净化装置
    • US5987884A
    • 1999-11-23
    • US95763
    • 1998-06-11
    • Kazuya KibeMasato GotohTatsuji MizunoKouichi Akita
    • Kazuya KibeMasato GotohTatsuji MizunoKouichi Akita
    • B01D53/94F01N3/20F01N9/00F02B37/00F02M25/07F01N3/00
    • F02D41/0275B01D53/9495F02B37/00F02B37/025F02D41/0065F02D41/008F02D41/405F01N13/107F01N2430/06F01N2610/03F02M26/15Y02T10/144Y02T10/44Y02T10/47
    • According to the invention, there is provided an exhaust gas purification device for purifying an exhaust gas discharged from an engine having cylinders including first and second cylinders. An exhaust stroke in the first cylinder is carried out next to an exhaust stroke in the second cylinder. The exhaust gas purification device comprises exhaust branch passages which are connected to the cylinders, respectively. The exhaust branch passages include first and second exhaust branch passages which are connected to the first and second cylinders, respectively. The exhaust gas purification device comprises a common exhaust passage connected to the exhaust branch passages, a catalyst positioned in the common exhaust passage for purifying an exhaust gas, and an exhaust gas recirculation passage connected to the first exhaust branch passage. The exhaust gas recirculation passage introduces the exhaust gas from the first exhaust branch passage into an intake passage which is connected to the cylinders. According to the invention, a reducing agent is fed to only the second cylinder during the power or the exhaust stroke in the second cylinder to promote the purifying operation of the catalyst when the exhaust gas is introduced into the intake passage via the exhaust gas recirculation passage.
    • 根据本发明,提供了一种用于净化从具有包括第一和第二气缸的气缸的发动机排出的废气的排气净化装置。 在第二气缸中的排气冲程旁边执行第一气缸中的排气冲程。 废气净化装置包括分别连接到气缸的排气分支通道。 排气分支通道包括分别连接到第一和第二气缸的第一和第二排气分支通道。 废气净化装置包括连接到排气支路的公共排气通道,位于公共排气通道中用于净化废气的催化剂和连接到第一排气分支通道的废气再循环通道。 排气再循环通道将排气从第一排气分支通道引入连接到气缸的进气通道。 根据本发明,在第二气缸的动力或排气冲程期间,还原剂仅供给到第二气缸,以在排气通过排气再循环通道引入进气通道时促进催化剂的净化操作 。
    • 3. 发明授权
    • Fuel injection control system for a diesel engine
    • 柴油机燃油喷射控制系统
    • US6016788A
    • 2000-01-25
    • US109417
    • 1998-07-02
    • Kazuya KibeMasato GotohTatsuji Mizuno
    • Kazuya KibeMasato GotohTatsuji Mizuno
    • F02M25/07F02B3/06F02D21/08F02D41/00F02D41/02F02D41/04F02D41/14F02D41/38F02D43/00
    • F02D41/0052F02D41/38F02B3/06F02D2041/0017F02D2041/0022F02D2250/38F02D41/18Y02T10/42Y02T10/47
    • 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.
    • 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 。
    • 6. 发明授权
    • Exhaust gas purifying device for engine
    • 发动机废气净化装置
    • US5884476A
    • 1999-03-23
    • US925025
    • 1997-09-08
    • Shinya HirotaTatsuji MizunoKazuya Kibe
    • Shinya HirotaTatsuji MizunoKazuya Kibe
    • F02M25/07B01D53/94F01N3/08F01N3/20F01N3/24F01N3/36F02D21/08F02D35/00F02D43/00
    • F01N3/2066B01D53/9431B01D53/9495F02D21/08F02D35/0092F02D41/0052B01D2251/208B01D53/9418F01N2610/03F02D2200/0802F02D41/0055F02D41/0275Y02T10/24Y02T10/42Y02T10/47
    • An exhaust gas purifying device, for an engine performing a lean operation and having an EGR system capable of controlling an EGR ratio, comprises a NO.sub.X catalyst arranged in the exhaust passage capable of selectively reducing NO.sub.X in the inflowing exhaust gas, in the oxidizing atmosphere including a reducing agent, and a reducing agent injector arranged in the exhaust passage of the engine for secondarily supplying a reducing agent to the exhaust passage upstream of the NO.sub.X catalyst. The EGR system has an EGR passage connecting the exhaust passage and the intake passage of the engine, an EGR control valve arranged in the EGR passage, and an intake air control valve arranged in the intake passage upstream of an inlet of the EGR passage. The openings of the EGR control valve and the intake air control valve are controlled to control the temperature of the exhaust gas to make the temperature of the NO.sub.X catalyst within the optimum temperature range or equal to the optimum temperature. The amount of the reducing agent injected by the reducing agent injector is made smaller as the EGR ratio becomes higher.
    • 一种排气净化装置,用于执行稀薄运转并具有能够控制EGR率的EGR系统的发动机,包括排气通道中的NOX催化剂,其能够选择性地还原流入废气中的NO x,其包括在氧化气氛中,包括 还原剂和还原剂喷射器,其布置在发动机的排气通道中,用于二次向NOX催化剂上游的排气通道供应还原剂。 EGR系统具有连接发动机的排气通路和进气通路的EGR通路,配置在EGR通路中的EGR控制阀以及配置在EGR通路的入口上游的进气通路内的进气控制阀。 控制EGR控制阀和进气控制阀的开口以控制排气的温度,使NOX催化剂的温度在最佳温度范围内或等于最佳温度。 随着EGR率变高,由还原剂喷射器喷射的还原剂的量变小。
    • 9. 发明授权
    • Exhaust emission purification apparatus for an internal combustion engine
    • 内燃机用排气净化装置
    • US5842341A
    • 1998-12-01
    • US903706
    • 1997-07-31
    • Kazuya Kibe
    • Kazuya Kibe
    • F01N3/08B01D53/94F01N3/20F01N3/28F01N3/36F01N9/00
    • F01N9/00B01D53/9431B01D53/9495F01N3/2066F01N2560/06F01N2610/03F01N2610/146F01N2900/08Y02T10/24Y02T10/47
    • An exhaust emission gas purification apparatus for an internal combustion engine is disclosed, in which a proper purification rate can be maintained even at a transient time by suppressing an excessive temperature increase of a lean NO.sub.x catalyst. In order to improve the purification efficiency of a lean NO.sub.x catalyst 307, diesel fuel constituting a hydrocarbon material capable of reducing the NO.sub.x is supplied by way of a diesel fuel injection hole 311. A basic amount of diesel fuel to be supplied is determined on the basis of a space velocity SV providing a quantity of state representing the operating conditions of the catalyst calculated from the intake air amount detected by an air flowmeter 302 and the catalyst temperature detected by an outlet exhaust gas temperature sensor 322. The basis amount of diesel fuel to be supplied is corrected based on the difference between the catalyst temperature and the inlet exhaust gas temperature detected by the inlet exhaust gas temperature sensor 321. The purification rate of the catalyst can thus be prevented from being deteriorated at a transient time.
    • 公开了一种用于内燃机的废气净化装置,其中通过抑制贫NOx催化剂的过度升温,即使在瞬时时间也能够保持适当的净化率。 为了提高贫NOx催化剂307的净化效率,构成能够还原NO x的烃类材料的柴油燃料通过柴油燃料喷射孔311供给。供给的柴油的基本量由 提供表示由空气流量计302检测到的进气量计算出的催化剂的运行状态的状态的空间速度SV的基准以及由出口排气温度传感器322检测出的催化剂温度。柴油的基准量 基于由入口排气温度传感器321检测到的催化剂温度和入口排气温度之间的差异来校正供给。因此,可以防止催化剂的净化率在瞬时劣化。
    • 10. 发明授权
    • Control apparatus for internal combustion engine
    • 内燃机控制装置
    • US07219002B2
    • 2007-05-15
    • US11440111
    • 2006-05-25
    • Akiyoshi NegishiKazuya Kibe
    • Akiyoshi NegishiKazuya Kibe
    • F02D41/00
    • F02D41/0007F02D41/005F02D41/2416F02D41/2422F02D41/3836F02D41/401F02D41/403F02D2200/0406F02M26/05F02M26/47Y02T10/144
    • An intake air pressure P1 and a target control value S1 under the condition that the internal combustion engine is in a steady operating state and the condition that the turbocharger has its supercharging efficiency set to a ratio according to the engine operating state are estimated based on engine parameters, and an intake air pressure P2 and a target control value S2 under the condition that the internal combustion engine is in the steady operating state and the condition without supercharging by the turbocharger are estimated based on the engine parameters. A target control value S0 associated with an actual intake air pressure P0 under the condition that the internal combustion engine is in a transient operating state is calculated by performing interpolation on the target control values S1, S2 based on a relation between the intake air pressures P1, P2 and the actual intake air pressure P0.
    • 在内燃机处于稳定运行状态的条件下,进气压力P 1和目标控制值S1,基于发动机运转状态将涡轮增压器的增压效率设定为比率的条件进行估计 基于发动机参数来估计在内燃机处于稳定运行状态并且通过涡轮增压器不增压状态的条件下的发动机参数以及进气压力P 2和目标控制值S 2。 通过对目标控制值S 1,S 2进行内插来计算在内燃机处于过渡运转状态的情况下与实际进气压P 0相关联的目标控制值S 0, 进气压力P 1,P 2和实际进气压力P 0。