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    • 1. 发明授权
    • Fuel injection device
    • 燃油喷射装置
    • US5076241A
    • 1991-12-31
    • US408147
    • 1989-09-15
    • Takeshi TakahashiHiroshi SamiTakashi Yamamoto
    • Takeshi TakahashiHiroshi SamiTakashi Yamamoto
    • F02M57/02F02M59/36F02M59/46F02M37/00
    • F02M59/36F02M57/02F02M59/366F02M59/468F02M2200/704
    • A unit injector comprising a plunger, a high pressure fuel chamber, and a needle; the pressure of fuel in the high pressure fuel chamber being increased by the plunger. A spill valve is slidably inserted into a bore and is actuated by an actuator. The spill valve has a first annular fitting portion in tight contact with the inner wall of the bore at one end thereof, and has a second annular fitting portion in tight contact with the inner wall of the bore at the other end thereof. The bore has an annular valve seat formed on the wall thereof, and the spill valve has an annular valve portion between the first annular fitting portion and the second annular fitting portion. A high pressure fuel introduction chamber is formed around the spill valve between the first annular fitting portion and the annular valve portion and is continuously connected to the high pressure fuel chamber. A fuel spill chamber is formed around the spill valve between the second annular fitting portion and the annular valve portion, and when the annular valve portion is moved away from the annular valve seat, fuel under a high pressure is spilled out from the high pressure fuel chamber into the fuel spill and the fuel injection is stopped.
    • 一种单元喷射器,包括柱塞,高压燃料室和针; 高压燃料室中的燃料压力由柱塞增加。 溢流阀可滑动地插入孔中并由致动器致动。 溢流阀具有在其一端处与孔的内壁紧密接触的第一环形装配部分,并且在其另一端处具有与孔的内壁紧密接触的第二环形装配部分。 所述孔具有形成在其壁上的环形阀座,并且所述溢流阀在所述第一环形配合部和所述第二环形配合部之间具有环形阀部。 高压燃料引入室围绕第一环形配合部分和环形阀部分之间的溢流阀形成,并连续地连接到高压燃料室。 在第二环形配件部分和环形阀部分之间的溢流阀周围形成燃料溢出室,当环形阀部分从环形阀座移开时,高压燃料从高压燃料 进入燃料溢出并停止燃油喷射。
    • 5. 发明授权
    • Method and device for measuring fuel injection timing
    • 测量燃油喷射正时的方法和装置
    • US5767396A
    • 1998-06-16
    • US814028
    • 1997-03-10
    • Ryuji OkamotoTetsuji SatoKazumi UmekiTakeshi TakahashiNaoyuki TsuzukiShunsuke YasunishiKoji KitanoTakashi Yamamoto
    • Ryuji OkamotoTetsuji SatoKazumi UmekiTakeshi TakahashiNaoyuki TsuzukiShunsuke YasunishiKoji KitanoTakashi Yamamoto
    • G01M15/04F02B1/04F02D41/04F02D41/34F02D41/40F02D45/00F02M65/00G01M15/00
    • F02D41/345F02B1/04Y02T10/44
    • An injection timing measuring method and device require a reduced amount of time for calculation. A reference position signal is generated at a predetermined crank angle within the range of 30.degree. CA to 90.degree. CA prior to TDC. Crank angle signals from a crank angle sensor are used as main measuring increments to measure a period starting from generation of the reference position signal and ending upon generation of an injection signal by a lift sensor provided in an injection valve unit, and another period starting from generation of the reference position signal and ending upon generation of a TDC signal. The injection timing relative to the TDC is provided as a difference between the two periods. Each period is precisely measured by counting crank angle signals generated within the period and by determining the remaining duration from the last-counted signal to generation of the injection or TDC signal as a fraction of the crank angle signal interval. Measurement of the injection period starts from an injection start time at which the level of the injection signal exceeds a criterion value, and ends upon an injection end time at which the level falls below the criterion value.
    • 注射定时测量方法和装置需要减少计算时间。 在TDC之前的30°C〜90°C的范围内,以规定的曲柄角产生基准位置信号。 来自曲柄角传感器的曲柄角信号用作主要的测量增量,以测量从基准位置信号的产生开始的周期,并且由设置在喷射阀单元中的提升传感器产生喷射信号结束,并且从 生成参考位置信号,并在TDC信号的产生结束时结束。 相对于TDC的喷射定时被提供为两个周期之间的差。 通过计算在该周期内产生的曲柄角信号并且通过确定从上次计数的信号到产生注射或TDC信号的剩余持续时间作为曲柄角信号间隔的一部分来精确地测量每个周期。 喷射期间的测量从喷射信号的水平超过标准值的喷射开始时刻开始,并且在水平低于标准值的喷射结束时间结束。
    • 7. 发明申请
    • BOOM FOR CONSTRUCTION MACHINE
    • 建筑机械
    • US20140056677A1
    • 2014-02-27
    • US13994821
    • 2011-04-20
    • Takeshi TakahashiAtsushi HamadaTakayuki ShimodairaHikaru YamamotoMakoto Sugaya
    • Takeshi TakahashiAtsushi HamadaTakayuki ShimodairaHikaru YamamotoMakoto Sugaya
    • E02F3/38
    • E02F3/38
    • In left and right web plates (12) of a boom (11), first to fifth web materials (12A to 12E) are joined at edge portions in a front-rear direction along welding lines (13A to 13D). In an upper flange plate (14), a rear upper flange material (14A), a front upper flange material (14B), and a middle upper flange material (14C) are joined at edge portions in a front-rear direction along welding lines (15A, 15B). Ina lower flange plate (16), first to sixth lower flange materials (16A to 16F) are joined at edge portions in a front-rear direction along welding lines (17A to 17E). The welding lines (13A to 13D) of the left and right web plates (12) are disposed in positions that are different from those of the welding lines (15A, 15B) of the upper flange plate (14) and the welding lines (17A to 17E) of the lower flange plate (16) in a front-rear direction. This makes it possible to reduce the entire weight and thereby achieve reduction in weight while ensuring bending strength, torsional strength, and the like of the boom (11).
    • 在悬臂(11)的左右腹板(12)中,第一至第五腹板材料(12A至12E)沿着焊接线(13A至13D)沿前后方向的边缘部分接合。 在上法兰板(14)中,沿着焊接线的前后方向的边缘部分接合有后上凸缘材料(14A),前上凸缘材料(14B)和中上凸缘材料(14C) (15A,15B)。 下凸缘板(16),第一至第六下凸缘材料(16A至16F)沿焊接线(17A至17E)沿前后方向的边缘部分接合。 左和右腹板(12)的焊接线(13A〜13D)配置在与上部法兰板(14)的焊接线(15A,15B)和焊接线(17A)的位置不同的位置 至17E)的前后方向。 由此,能够减轻整体重量,能够实现起重臂(11)的弯曲强度,扭转强度等的减轻。