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    • 11. 发明授权
    • Power supply control system for an electrically heated catalytic
converter
    • 电加热催化转化器的电源控制系统
    • US5966931A
    • 1999-10-19
    • US926802
    • 1997-09-10
    • Kouji YoshizakiKazuhiro SakuraiMasahiko Hibino
    • Kouji YoshizakiKazuhiro SakuraiMasahiko Hibino
    • F01N3/20F01N9/00F01N13/02H02J7/00F01N3/00
    • F01N3/2026F01N13/009F01N9/00Y02T10/26Y02T10/47
    • In the power supply control system, an electrically heated catalytic converter (EHC) is connected to an alternator output terminal via a switch SW1, and a battery is connected to the alternator via a switch SW2 in parallel with the EHC. A control unit (ECU) for controlling the operation of the switches SW1 and SW2 is provided. When the engine has started, the ECU turns on the SW1 and turns off the SW2 to supply electric power to the EHC directly from the alternator. After the EHC is heated to the activating temperature and starts its catalytic action, the ECU turns on both the switches SW1 and SW2 to supply electric power to the EHC from the battery to maintain the temperature of the EHC. Since the electric power for raising the temperature of the EHC is supplied in the condition where the battery is disconnected from the alternator, the output voltage can be increased to a value higher than a normal output voltage for charging the battery. Therefore, a relatively large electric power can be supplied to the EHC without imposing an excessive load on the battery.
    • 在电源控制系统中,电加热催化转换器(EHC)经由开关SW1连接到交流发电机输出端子,并且电池经由与EHC并联的开关SW2连接到交流发电机。 提供一种用于控制开关SW1和SW2的操作的控制单元(ECU)。 当发动机起动时,ECU打开SW1并关闭SW2,直接从交流发电机向EHC供电。 在EHC被加热到激活温度并开始其催化作用之后,ECU接通开关SW1和SW2,从电池向EHC提供电力以维持EHC的温度。 由于在电池从交流发电机断开的状态下提供用于提高EHC的温度的电力,所以可以将输出电压提高到高于用于对电池充电的正常输出电压的值。 因此,可以向EHC提供相对较大的电力,而不会对电池施加过大的负载。
    • 15. 发明申请
    • Eight-cylinder engine
    • 八缸发动机
    • US20070034177A1
    • 2007-02-15
    • US10577937
    • 2005-03-18
    • Kouji Yoshizaki
    • Kouji Yoshizaki
    • F02B75/22F02D41/38
    • F02D41/20F02B75/22F02D41/266F02D41/402F02D41/405Y02T10/44
    • 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.
    • 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。
    • 19. 发明授权
    • Diagnostic apparatus for controlling the operation of a catalytic
converter
    • 用于控制催化转化器操作的诊断装置
    • US5537321A
    • 1996-07-16
    • US135441
    • 1993-10-13
    • Kouji YoshizakiHiroshi Tanaka
    • Kouji YoshizakiHiroshi Tanaka
    • F01N3/20F01N3/22F01N3/28F01N9/00F01N13/02G06F19/00F01N3/00
    • F01N3/2026F01N13/009F01N3/2807F01N9/00F01N3/22Y02T10/26Y02T10/47
    • 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.
    • 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。