会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Fuel injection control device for internal combustion engine
    • 内燃机燃油喷射控制装置
    • US5425343A
    • 1995-06-20
    • US182836
    • 1994-01-19
    • Motonobu AkakiYasutoshi YamadaNobuyuki OotaMasaki MitsuyasuDaisaku Sawada
    • Motonobu AkakiYasutoshi YamadaNobuyuki OotaMasaki MitsuyasuDaisaku Sawada
    • F02D41/20F02D41/40F02M51/00H01L41/04H01L41/08
    • F02D41/40F02D41/2096H02N2/062H02N2/067F02D2041/2003Y02T10/44
    • Piezoelectric element used in a fuel injection value is to be improved in its response to expansion and contraction, while the supply of an excess energy to the piezoelectric element is to be controlled. In a fuel injection control device in which an output voltage of the dc-dc converter is applied to a piezoelectric element via a choke coil and a thyristor, a current detection unit is provided between the dc-dc converter and the thyristor. A measured value of the electric charge, as found by integrating a charging current flowing through the current detection unit is compared by a comparator to a command value of electrical charges as found by processing the dc-dc converter output voltage. The results of comparison are supplied to a latch unit so as to be latched at the timing of a peak value of the charging current. A capacitor is charged and discharged depending on an output of the latch unit, and the terminal voltage across the capacitor and the output voltage of the dc-dc converter are compared to each other for controlling the output voltage of the dc-dc converter.
    • 在燃料喷射值中使用的压电元件在对膨胀和收缩的响应中将得到改善,同时控制向压电元件供应过量能量。 在其中通过扼流线圈和晶闸管将dc-dc转换器的输出电压施加到压电元件的燃料喷射控制装置中,在dc-dc转换器和晶闸管之间提供电流检测单元。 通过对流过电流检测单元的充电电流进行积分而得到的电荷的测量值通过比较器与通过处理dc-dc转换器输出电压所发现的电荷的指令值进行比较。 将比较结果提供给锁存单元,以便在充电电流的峰值的定时被锁存。 电容器根据锁存单元的输出进行充放电,将电容器两端的端子电压和dc-dc转换器的输出电压进行比较,以控制dc-dc转换器的输出电压。
    • 2. 发明授权
    • Fuel injection control device for internal combustion engine
    • 内燃机燃油喷射控制装置
    • US5477831A
    • 1995-12-26
    • US182837
    • 1994-01-19
    • Motonobu AkakiYasutoshi YamadaNobuyuki OotaMasaki MitsuyasuDaisaku Sawada
    • Motonobu AkakiYasutoshi YamadaNobuyuki OotaMasaki MitsuyasuDaisaku Sawada
    • F02D41/20F02D41/40F02M51/00H01L41/04
    • F02D41/2096F02D41/40H02N2/067F02D2041/2003Y02T10/44
    • An excess voltage applied to a piezoelectric element is detected and controlled to improve durability and reliability of the piezoelectric element. A fuel injection control device for an internal combustion engine in which a power source voltage is boosted by a dc-dc converter and the so-boosted output voltage is supplied via a first choke coil and a first thyristor to a piezoelectric element for charging the piezoelectric element, the electric charge of which is subsequently discharged via a second thyristor and a second choke coil. The fuel injection control device includes a positive voltage detection unit for detecting an excess voltage arranged between the first choke coil and the first thyristor and a positive voltage control unit controlled by an output signal of the positive voltage detection unit and adapted for shorting both ends of the first choke coil. The current through the first thyristor is cutoff to prevent the excess voltage from being applied to the piezoelectric element.
    • 检测并控制施加到压电元件的过电压,以提高压电元件的耐久性和可靠性。 一种用于内燃机的燃料喷射控制装置,其中电源电压由dc-dc转换器升压,并且如此升压的输出电压经由第一扼流线圈和第一晶闸管提供给用于对压电元件充电的压电元件 元件,其电荷随后经由第二晶闸管和第二扼流线圈放电。 燃料喷射控制装置包括:正电压检测单元,用于检测布置在第一扼流线圈和第一晶闸管之间的过电压;以及正电压控制单元,由正电压检测单元的输出信号控制,并且适于短路两端 第一个扼流圈。 通过第一晶闸管的电流被切断以防止过压被施加到压电元件。
    • 7. 发明授权
    • Fuel injection valve operated by expansion and contraction of
piezoelectric element
    • 燃油喷射阀由压电元件的膨胀和收缩操作
    • US5482213A
    • 1996-01-09
    • US249991
    • 1994-05-27
    • Masanobu MatsusakaSusumu SugimotoMotonobu AkakiYasutoshi Yamada
    • Masanobu MatsusakaSusumu SugimotoMotonobu AkakiYasutoshi Yamada
    • F02M51/06B05B1/30
    • F02M51/0603
    • A fuel injection valve comprises a valve body having a injection port at an edge thereof, a needle valve member interposed in the valve body and opening or closing the injection port, a first spring member for energizing the needle valve member in a one direction, a piezoelectric device being a piezoelectric element having a cylindrical body mounted on the interior of the valve body in a condition that a positive or negative voltage is applied, and controlling the needle valve member in the direction of opening the injection port by applying a voltage changed over positively or negatively at the time of fuel injection while pushing the needle valve member in the opposite direction in response to the energizing direction of the first spring member, and a second spring member for providing a larger energizing force than the energizing force of the first spring member described above and being interposed between the valve body and the piezoelectric device described above. The fuel injection valve described above has a high durability and a large amount of fuel injection and is compact.
    • 一种燃料喷射阀,包括:阀体,其具有在其边缘处的注入口;插入阀体中的针阀构件,并且打开或关闭注射口;第一弹簧构件,用于沿一个方向对针阀构件供能, 压电元件是一种压电元件,其具有在施加正或负电压的状态下安装在阀体内部的圆柱体,并且通过施加电压改变来控制针阀构件在打开注入口的方向上 响应于第一弹簧构件的受力方向推动针阀构件相反方向,在燃料喷射时正向或负向;以及第二弹簧构件,用于提供比第一弹簧的作用力更大的作用力 并且插入在阀体和上述压电装置之间。 上述燃料喷射阀具有高耐久性和大量的燃料喷射,并且紧凑。
    • 8. 发明授权
    • Ignition system for internal combustion engine
    • 内燃机点火系统
    • US5097815A
    • 1992-03-24
    • US592102
    • 1990-10-03
    • Nobuyuki OotaYasutoshi YamadaMotonobu Akagi
    • Nobuyuki OotaYasutoshi YamadaMotonobu Akagi
    • F02P15/10F02P3/04F02P15/00
    • F02P15/008F02P3/0435
    • An ignition system is disclosed in which secondary windings of a first and a second ignition coil are connected in parallel to a spark electrode of an internal combustion engine. A d.c. high voltage is alternately fed to the primary windings of the first and the second ignition coil. When an integrated value of a current flow through the first (the second) ignition coil reaches a first reference value, this primary coil is disconnected from a feed bus, and instead the primary winding of the second (the first) ignition coil is connected to the bus. When a short-circuit occurs in one of the ignition coils, only the other ignition coil conducts repeatedly, and accordingly the switching of the energization takes place whenever the current flow through the first (the second) ignition coil reaches a second reference value. In the event a breakage occurs in one of the ignition coils, only the other ignition coil conducts repeatedly, and accordingly the switching of the energization takes place when the integrated value of the current flow through the first (the second) ignition coil fails to reach the first reference value within a first given time interval.
    • 公开了一种点火系统,其中第一和第二点火线圈的次级绕组与内燃机的火花电极并联连接。 一个d.c. 交替地将高电压馈送到第一和第二点火线圈的初级绕组。 当通过第一(第二)点火线圈的电流的积分值达到第一参考值时,该初级线圈与馈电总线断开,而第二(第一)点火线圈的初级绕组连接到 公交车。 当点火线圈中的一个发生短路时,只有另一个点火线圈反复导通,因此当电流流过第一(第二)点火线圈达到第二参考值时,通电的切换发生。 在一个点火线圈中发生断线的情况下,只有其他点火线圈反复导通,因此当通过第一(第二)点火线圈的电流的积分值不能到达时,通电的切换发生 在第一给定时间间隔内的第一参考值。