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    • 1. 发明授权
    • Gasoline vapor capture and combustion system
    • 汽油蒸汽捕集和燃烧系统
    • US4658795A
    • 1987-04-21
    • US745689
    • 1985-06-17
    • Kenji KawashimaKatsuaki AsanoOsamu Takii
    • Kenji KawashimaKatsuaki AsanoOsamu Takii
    • F02M9/06F02M25/08F02M39/00
    • F02M9/06F02M25/0836Y10S261/67
    • Vapors normally arising within a standing gasoline tank are captured in a charcoal filled cannister. When the engine is running, air is drawn through the cannister thereby purging gasoline adsorbed on the charcoal within the cannister and delivering the purged gasoline vapors to the carburetor ultimately for combustion within the engine. Interference by the presence of such accumulated gasoline vapors in the carburetor, particularly during warm restarts and idling, can be avoided by preventing the injection of these gasoline vapors into the carburetor at the inappropriate times. Selective withholding of the purged gasoline vapors from a piston type carburetor, having a piston throttle valve disposed into and out of a venturi portion of the carburetor, is accomplished by injecting the gasoline vapors into the venturi portion through a purge port within the carburetor at a point such that the leading edge and outside surface of the piston type throttle valve closes and seals the port when the throttle valve is in a fully closed position. Thus, during idling and warm restarts, when the throttle valve is closed, no evaporated vapors are allowed to fill the venturi portion of the carburetor. Purging of the gasoline adsorbed on the charcoal within the cannister is accelerated by increasing the effective area of the purge port as the throttle valve is opened.
    • 通常在站立的汽油罐中产生的蒸气被捕获在一个充满炭的罐中。 当发动机运行时,空气通过罐抽吸,从而清除吸收在罐内的木炭上的汽油,并将净化的汽油蒸汽输送到化油器以最终在发动机内燃烧。 通过防止在不合适的时间将这些汽油蒸气注入化油器,可以避免在化油器中存在这种累积汽油蒸汽的干扰,特别是在暖重启和空转期间。 通过设置在化油器的文丘里部分内的具有活塞节流阀的活塞式化油器选择性地扣留清除汽油的蒸汽是通过汽化器内的吹扫口将燃料蒸汽注入文丘里管部分而实现的 使得当节流阀处于完全关闭位置时,活塞式节流阀的前缘和外表面关闭并密封端口。 因此,在空转和暖启动期间,当节流阀关闭时,不允许蒸发的蒸气填充化油器的文氏管部分。 通过在打开节流阀时增加吹扫口的有效面积,可以加速吸附在罐内的炭上的汽油的清洗。
    • 5. 发明授权
    • Exhaust system for an engine
    • 发动机排气系统
    • US07448204B2
    • 2008-11-11
    • US11311067
    • 2005-12-19
    • Hidehiro NishimuraJunichi OobaOsamu Takii
    • Hidehiro NishimuraJunichi OobaOsamu Takii
    • F01N3/00
    • F01N3/30F01N3/22F01N13/009F01N2270/00F02B2075/027Y02T10/20
    • A four-cycle engine is provided that includes an exhaust port for releasing combusted gas from the engine and an exhaust system. The exhaust system includes an exhaust pipe coupled with the exhaust port, a first catalyst, a second catalyst, and a secondary air introduction pipe. The first catalyst is disposed in the exhaust pipe and the second catalyst is disposed in the exhaust pipe a set distance downstream of the first catalyst. The secondary air introduction pipe is configured to introduce air into the exhaust pipe. The secondary air induction pipe is connected to the exhaust pipe between the first and the second catalysts at a location where a temperature difference of the first and the second catalysts in a cold start transient phase is within a predetermined range.
    • 提供一种四冲程发动机,其包括用于从发动机释放燃烧气体的排气口和排气系统。 排气系统包括与排气口连接的排气管,第一催化剂,第二催化剂和二次空气引入管。 第一催化剂设置在排气管中,第二催化剂在第一催化剂下游设置在排气管中。 二次空气导入管构成为将空气引入排气管。 在第一和第二催化剂之间的第二和第二催化剂的温度差在冷启动过程阶段的温度差在预定范围内的位置处,二次空气感应管连接到排气管。
    • 8. 发明申请
    • Exhaust system for an engine
    • 发动机排气系统
    • US20060150617A1
    • 2006-07-13
    • US11311067
    • 2005-12-19
    • Hidehiro NishimuraJunichi OobaOsamu Takii
    • Hidehiro NishimuraJunichi OobaOsamu Takii
    • F01N3/00F01N3/10
    • F01N3/30F01N3/22F01N13/009F01N2270/00F02B2075/027Y02T10/20
    • A four-cycle engine is provided that includes an exhaust port for releasing combusted gas from the engine and an exhaust system. The exhaust system includes an exhaust pipe coupled with the exhaust port, a first catalyst, a second catalyst, and a secondary air introduction pipe. The first catalyst is disposed in the exhaust pipe and the second catalyst is disposed in the exhaust pipe a set distance downstream of the first catalyst. The secondary air introduction pipe is configured to introduce air into the exhaust pipe. The secondary air induction pipe is connected to the exhaust pipe between the first and the second catalysts at a location where a temperature difference of the first and the second catalysts in a cold start transient phase is within a predetermined range.
    • 提供一种四冲程发动机,其包括用于从发动机释放燃烧气体的排气口和排气系统。 排气系统包括与排气口连接的排气管,第一催化剂,第二催化剂和二次空气引入管。 第一催化剂设置在排气管中,第二催化剂在第一催化剂下游设置在排气管中。 二次空气导入管构成为将空气引入排气管。 在第一和第二催化剂之间的第二和第二催化剂的温度差在冷启动过程阶段的温度差在预定范围内的位置处,二次空气感应管连接到排气管。