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    • 5. 发明授权
    • Multi-cylinder internal combustion engine
    • 多缸内燃机
    • US4030465A
    • 1977-06-21
    • US718196
    • 1976-08-26
    • Tatsuro NakagamiYuhiko Kiyota
    • Tatsuro NakagamiYuhiko Kiyota
    • F02M11/00F02B1/04F02B1/06F02M7/08F02M13/04F02M13/06
    • F02M7/08F02B1/06F02M13/046F02B1/04
    • An improved multi-cylinder internal combustion engine for producing cleaner exhaust gas. The engine has a novel fuel gas intake device in which a lean mixture gas having an air-to-fuel ratio of about 16-20 is fed almost uniformly to all the cylinders by means of a carburetor, and some of the cylinders are provided with a fuel addition passageway to supply an appropriate amount of additional fuel in accordance with various operation conditions of the engine in response to an opening angle and abrupt opening of a throttle valve of the carburetor so that a rich mixture gas having an air-to-fuel ratio of about 12-14 may be fed to such cylinders, whereby the amount of harmful gases, such as HC, CO and NO.sub.x in the exhaust, can be effectively reduced.
    • 一种用于生产清洁废气的改进的多缸内燃机。 发动机具有新颖的燃料气体进气装置,其中空燃比为约16-20的稀混合气体通过化油器几乎均匀地供给所有气缸,并且一些气缸设置有 燃料添加通道,其响应于化油器的节流阀的打开角度和突然打开而根据发动机的各种操作条件提供适量的附加燃料,使得具有空气燃料的富混合气体 约12-14的比例可以被供给到这种气缸,由此可以有效地减少排气中的有害气体,例如HC,CO和NO x的量。
    • 7. 发明授权
    • Carburetor system for multicylinder engine
    • 化油器系统用于多缸发动机
    • US4061118A
    • 1977-12-06
    • US697125
    • 1976-06-17
    • Yuhiko Kiyota
    • Yuhiko Kiyota
    • F02M11/00F02B19/10F02M13/04F02M13/06F02B33/00
    • F02M13/046F02B19/1028Y02T10/125
    • A carburetor system for us in a multicylinder engine comprises a carburetor having a main fuel-air mixture supply device to supply a mixture leaner than stoichiometric to at least one first cylinder and a corresponding number of second cylinder. A rich mixture supply device, integrated into the carburetor, has a rich mixture forming passage to make a mixture richer than stoichiometric. The main mixture supply device communicates with the first and second cylinders by a first passage, while the rich mixture forming passage with the second cylinder by a second passage. A first, second and third valves are provided in the first, second and rich mixture forming passages, respectively. These valves respectively are opened and closed by a first, second and third valve actuation devices, which are in turn regulated by an operation control device. Depending on the engine operating range and driving conditions, this carburetor system supplies a rich mixture to the second cylinder to raise the fuel-air ratio in it. By thus feeding both lean and rich mixtures to the engine, this system purifies its exhaust gases.
    • 用于多缸发动机的化油器系统包括具有主要燃料 - 空气混合物供应装置的化油器,其将比化学计量稀释的混合物供给至少一个第一气缸和相应数量的第二气缸。 集成到化油器中的丰富的混合物供应装置具有丰富的混合物形成通道,使混合物比化学计量更浓。 主混合物供给装置通过第一通道与第一和第二气缸连通,而富混合物通过第二通道与第二气缸形成通道。 第一,第二和第三阀分别设置在第一,第二和富混合物形成通道中。 这些阀分别由第一,第二和第三阀致动装置打开和关闭,第一,第二和第三阀致动装置又由操作控制装置调节。 根据发动机工作范围和驾驶条件,该化油器系统向第二气缸提供丰富的混合物以提高其中的燃料空气比。 通过这样将精益和丰富的混合物喂给发动机,该系统净化其废气。