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    • 1. 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。
    • 2. 发明授权
    • Measuring device for measuring a fuel injection quantity
    • 用于测量燃料喷射量的测量装置
    • US4798084A
    • 1989-01-17
    • US939981
    • 1986-12-09
    • Takeshi TakahashiNaoyuki TsuzukiHidetaka NohiraYukimitsu OmoriAkio Takamura
    • Takeshi TakahashiNaoyuki TsuzukiHidetaka NohiraYukimitsu OmoriAkio Takamura
    • F02B1/04F02M65/00G01F3/20G01F13/00G01M15/00
    • F02M65/001G01F13/00G01F3/20F02B1/04
    • A measuring device for measuring a fuel injection quantity comprising fuel volume sensing means including a fuel injection chamber connected to a fuel injection valve and receiving the fuel injection quantity therefrom, a back pressure chamber which faces the fuel injection chamber, bulkhead means located between the fuel injection chamber and the back pressure chamber as an intercept therebetween and responsive to the fuel injection quantity for generating a displacement, sensing means for sensing the displacement of the bulkhead means, pressure means for holding a pressure of the back pressure chamber to be of a constant value, fuel injection quantity computing means responsive to the sensing means for determining a fuel injection quantity, discharging means including fuel discharging means for discharging the injected fuel quantity from the fuel injection chamber to its exterior, discharging quantity computing means responsive to the fuel injection quantity computing means for computing a discharged quantity, and discharge control means responsive to the discharging quantity computing means for controlling the fuel discharging means so as to control the discharged quantity.
    • 一种用于测量燃料喷射量的测量装置,包括燃料量检测装置,包括连接到燃料喷射阀并接收燃料喷射量的燃料喷射室,面向燃料喷射室的背压室,位于燃料 喷射室和背压室作为其间的截距,并响应于用于产生排量的燃料喷射量,用于感测隔板装置的位移的感测装置,用于将背压室的压力保持为恒定的压力装置 响应于用于确定燃料喷射量的感测装置的燃料喷射量计算装置,包括用于将喷射的燃料量从燃料喷射室排放到其外部的燃料排出装置的排出装置,响应于燃料喷射量的排出量计算装置 计算方法 排出量控制装置,其响应于排放量计算装置,用于控制燃料排放装置,以控制排放量。
    • 3. 发明授权
    • Measuring apparatus of volume of an injected fluid
    • 注射液体积的测量装置
    • US4858466A
    • 1989-08-22
    • US193531
    • 1988-05-13
    • Takeshi TakahashiNaoyuki TsuzukiYukimitsu OmoriAkio Takamura
    • Takeshi TakahashiNaoyuki TsuzukiYukimitsu OmoriAkio Takamura
    • F02B1/04F02D41/00F02M65/00G01F1/20G01F1/28G01F1/34G01F3/20
    • G01F1/206F02M65/002G01F1/28G01F1/34F02B1/04
    • A measuring apparatus of a volume of a fluid injected from an injection valve. A fluid having a volume V is injected from an injection valve into an injection chamber containing a fluid, same kind as that of the injected fluid, and having a predetermined pressure and volume. A back pressure chamber is formed separately in the injection chamber with a parting plate having an effective under-pressure area A and a bellow sealed and connected, at one end thereof, to the parting plate. In the back pressure chamber a non-contact displacement sensor having a thermal compensation device is disposed with a clearance from the parting plate and the bellow and the back pressure chamber is filled with another fluid having same pressure as that of fluid in the injection chamber. By the injection of the fluid into the injection chamber, the parting plate moves toward the non-contact displacement sensor by a distance S which is equal to V/A. Distance S is detected by the non-contact displacement sensor. So the volume (V=AxS) of the fluid injected from the injection valve is measured easily and precisely without being affected by temperature variation.
    • 一种从注射阀喷射的流体体积的测量装置。 具有体积V的流体从注射阀注入到包含与注射流体相同的流体并具有预定压力和体积的流体的注射室中。 背压室在注射室中单独形成,具有分离板,其具有有效的压力区域A和波纹管,其一端在分隔板上密封并连接。 在背压室中,具有热补偿装置的非接触位移传感器设置成具有与分隔板和波纹管相距的间隙,并且背压室填充有与注射室中的流体具有相同压力的另一流体。 通过将流体注入注射室,分型板朝着非接触位移传感器移动距离S等于V / A。 距离S由非接触位移传感器检测。 因此,不会受到温度变化的影响,容易且精确地测量从喷射阀喷射的流体的体积(V = AxS)。
    • 8. 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。