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    • 3. 发明授权
    • Monitoring of fuel vapor pressure
    • 监测燃油蒸汽压力
    • US06886398B2
    • 2005-05-03
    • US10642622
    • 2003-08-19
    • Takeshi TsuyukiTakashi AramakiMasato KobayashiHiroya Ishii
    • Takeshi TsuyukiTakashi AramakiMasato KobayashiHiroya Ishii
    • F02M25/08G01M15/00
    • F02M25/0818
    • Fuel vapor in a fuel tank (1) is purged into an intake passage (8) of an engine (10) through a purge vent (2, 4, 6). The controller (21) determines whether a leak is present in a purge vent from the fuel tank (1) to a purge control valve (11). The determination process comprises a pull-down process in which a pressure in the purge vent is reduced using a negative pressure in the intake passage (8) and a leak-down process of sealing the purge vent at the reduced pressure and monitoring the pressure variation. The controller (21) calculates an error equivalence amount (DVPII), a pressure component corresponding to sloshing in the fuel tank (1) during the leak-down process, and determines the presence of a leak in a highly accurate manner based a corrected pressure (DVP5A) in which the monitored pressure variation is corrected using the error equivalence amount (DVPII) (S22).
    • 燃料箱(1)中的燃料蒸汽通过排气口(2,4,6)被清除到发动机(10)的进气通道(8)中。 控制器(21)确定从燃料箱(1)到净化控制阀(11)的排气口中是否存在泄漏。 确定过程包括下拉过程,其中在进气通道(8)中使用负压使排气口中的压力减小,以及在减压下密封排气口的泄漏过程并监测压力变化 。 控制器(21)计算误差当量(DVPII),在泄漏处理期间对应于燃料箱(1)中的晃动的压力分量,并且基于校正压力高精度地确定泄漏的存在 (DVP5A),其中使用误差当量量(DVPII)校正所监视的压力变化(S22)。
    • 7. 发明授权
    • Connecting structure for pressure piping
    • 压力管道连接结构
    • US09217525B2
    • 2015-12-22
    • US13979125
    • 2011-10-20
    • Kazumi KobayashiMasato Kobayashi
    • Kazumi KobayashiMasato Kobayashi
    • F16L21/00F16L23/024F16L25/08
    • F16L21/00F16L23/024F16L25/08
    • in order to connect pressure pipes in a fluid-tight manner on-site without welding, a plurality of through holes (h1) are provided in a cylindrical sleeve (1a) at separate locations in the lengthwise direction, and with identical angular intervals around the circumference of the cylindrical sleeve without overlapping in the circumferential direction. Non-through holes (h2) in which screw threads have been formed are provided in pressure plates (P1, P2) at locations corresponding to the holes (h1). An insert (2a) has a pair of opposing annular faces (31, b2), and annular ring grooves (b11, b21) are formed respectively in the annular faces (b1,b2) to house O-rings (3). The insert (2a) is inserted into the sleeve (1a), after which the pressure pipes (P1, P2) are inserted, one from either side, into the interior of the sleeve (1a), and bolts (4) are inserted into the plurality of holes (h1) in the sleeve (1a), and screwed onto the screw threads of the pressure pipes (P1, P2).
    • 为了在现场没有焊接的情况下以流体密封的方式连接压力管,多个通孔(h1)在长度方向上分开的位置处设置在圆筒形套筒(1a)中,并且围绕 圆筒形套筒的圆周不在圆周方向上重叠。 其中形成螺纹的非通孔(h2)在对应于孔(h1)的位置处设置在压力板(P1,P2)中。 插入件(2a)具有一对相对的环形面(31,b2),分别在环形面(b1,b2)上形成环形环槽(b11,b21)以容纳O形环(3)。 将插入件(2a)插入到套筒(1a)中,然后将压力管(P1,P2)从任一侧插入到套筒(1a)的内部,并将螺栓(4)插入 套筒(1a)中的多个孔(h1),并拧入压力管(P1,P2)的螺纹上。