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    • 33. 发明授权
    • Vehicle exhaust-gas purifier
    • 车辆废气净化器
    • US5956946A
    • 1999-09-28
    • US44469
    • 1998-03-19
    • Toyoo Yamada
    • Toyoo Yamada
    • F01N3/02B01D50/00B01D53/38B01D53/81B01D53/94B03C3/017B03C3/80B03C3/88B08B15/00F01N3/00F01N3/01F01N3/021F01N3/24B01D41/00B03C3/74
    • B01D53/9454B03C3/017B03C3/80B03C3/88B08B15/00F01N3/005F01N3/01F01N3/021F01N2250/02Y02T10/20Y02T10/22
    • A vehicle exhaust-gas purifier adapted for use on a testing line in a repair shop or the like is provided, wherein exhaust gases emitted from an engine of a vehicle are gathered directly from the vehicle and emitted into the environment after being purified. The vehicle exhaust-gas purifier is provided with a mechanism for preventing deterioration of catalysts used for reducing gaseous pollutants in the exhaust gases. The purifier has an exhaust-gas gathering nozzle A which is detachably connected to an exhaust pipe of an engine of a vehicle. The exhaust gases are introduced through the exhaust-gas gathering nozzle A and an inlet C into a purifier housing. Then, any carbon particles and unburned fuel mist particles are removed from the exhaust gases through a filter chamber 10, and then the major gaseous pollutants, HC, NO.sub.x, and CO, are removed from the exhaust gases through a catalyst chamber 20. The filter chamber 10 has a filter unit 11 and an electrostatic dust collecting unit 12 provided therein. Any carbon particles and unburned fuel accumulated on the electrostatic dust collecting unit 12 are removed therefrom in a cleaning chamber 40 so as to refresh the electrostatic dust collecting unit 12.
    • 提供适用于维修车间等的检测线上的车辆排气净化器,其特征在于,从车辆的发动机排出的废气直接从车辆收集,并在净化后排放到环境中。 车辆废气净化器设置有用于防止用于还原废气中的气态污染物的催化剂劣化的机构。 净化器具有可拆卸地连接到车辆的发动机的排气管的废气收集喷嘴A. 废气通过排气收集喷嘴A和入口C引入净化器壳体中。 然后,任何碳颗粒和未燃烧的燃料雾颗粒通过过滤室10从废气中除去,然后通过催化剂室20将废气中的主要气态污染物HC,NOx和CO除去。过滤器 室10具有设置在其中的过滤器单元11和静电集尘单元12。 积聚在静电集尘单元12上的任何碳颗粒和未燃燃料在清洁室40中被除去,以便刷新静电集尘单元12。
    • 40. 发明申请
    • DIAPHRAGM PUMP
    • US20210207593A1
    • 2021-07-08
    • US17056677
    • 2019-05-23
    • YAMADA CORPORATION
    • Kotaro YAMADASatoru SUWABE
    • F04B43/06
    • To manufacture a diaphragm pump with higher reliability in which the mechanism of a main valve is simplified without a pilot chamber. A diaphragm pump 10 includes paired diaphragms 34 and 44 that define pump chambers 36, 46 and air chambers 32, 42, a main body unit 20 that slidably supports a center rod 120 at a central portion of each diaphragm 34, 44 so as to be capable of reciprocating the center rod 120, and a valve body 80 that houses a spool 100 that switches supply of a fluid to the air chambers 32 and 42 so as to reciprocate the center rod 120, the valve body 80 including a sleeve 84, and the spool 100 that is disposed inside the sleeve 84 to be reciprocated in an axial direction, wherein the spool 100 is composed of a disc-shaped portion S3, a disc-shaped portion S2, and a disc-shaped portion S1, and a surface area of each disc-shaped portion that receives a compressed air pressure has a relationship that an upper side of the disc-shaped portion S3>a lower side of the disc-shaped portion S2>an upper side of the disc-shaped portion S1.