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
    • 4. 发明公开
    • Control method for a fuel injection engine
    • 燃油喷射发动机的控制方法
    • EP0184626A3
    • 1986-08-27
    • EP85112425
    • 1985-10-01
    • HITACHI, LTD.
    • Sekozawa, TerujiShioya, MakotoFunabashi, MotohisaOnari, MikihikoShida, Masami
    • F02D41/34F02D41/10F02D41/26
    • F02D41/047
    • The fuel injection quantity required for maintaining the air-fuel ratio of the mixture supplied to each cylinder of an engine (10) at a desired value is determined by calculating from sensor data a deposition rate X at which injected fuel deposits and forms film mass on an intake manifold wall (21) of the engine and a vaporization rate 1/ T at which the film mass vaporizes from the manifold wall, calculating a current film mass quantity M, from the calculated X and 1/ T and the fuel quantity by the preceding injection, calculating a desired fuel quantity Q a /(A/F) to be supplied to the cylinder from an intake air flow Q. and a desired air-fuel ratio A/F and determining a current fuel injection quantity G f from the calculation results in accordance with the following equation Also, an accurate film mass quantity estimation is accomplished by subtracting a calculated value of a carry-over fuel quantity to be delivered to the cylinder from the film mass quantity estimated during the preceding period and adding a calculated value of a wall deposition fuel quantity per period obtained on the basis of an actual fuel injection quantity per stroke of the engine to the remaining film mass quantity thereby estimating a current film mass quantity.
    • 5. 发明公开
    • Control method for a fuel injection engine
    • Steuerverfahrenfüreinen Motor mit Kraftstoffeinspritzung。
    • EP0184626A2
    • 1986-06-18
    • EP85112425.5
    • 1985-10-01
    • HITACHI, LTD.
    • Sekozawa, TerujiShioya, MakotoFunabashi, MotohisaOnari, MikihikoShida, Masami
    • F02D41/34F02D41/10F02D41/26
    • F02D41/047
    • The fuel injection quantity required for maintaining the air-fuel ratio of the mixture supplied to each cylinder of an engine (10) at a desired value is determined by calculating from sensor data a deposition rate X at which injected fuel deposits and forms film mass on an intake manifold wall (21) of the engine and a vaporization rate 1/ T at which the film mass vaporizes from the manifold wall, calculating a current film mass quantity M, from the calculated X and 1/ T and the fuel quantity by the preceding injection, calculating a desired fuel quantity Q a /(A/F) to be supplied to the cylinder from an intake air flow Q. and a desired air-fuel ratio A/F and determining a current fuel injection quantity G f from the calculation results in accordance with the following equation
      Also, an accurate film mass quantity estimation is accomplished by subtracting a calculated value of a carry-over fuel quantity to be delivered to the cylinder from the film mass quantity estimated during the preceding period and adding a calculated value of a wall deposition fuel quantity per period obtained on the basis of an actual fuel injection quantity per stroke of the engine to the remaining film mass quantity thereby estimating a current film mass quantity.
    • 通过从传感器数据计算喷射的燃料沉积并形成膜质量的沉积速率X来确定将供应到发动机(10)的每个气缸的混合物的空燃比维持在期望值所需的燃料喷射量 发动机的进气歧管壁(21)和蒸发速率1 / tau,薄膜质量从歧管壁蒸发,从计算出的X和1 / tau计算当前薄膜质量Mf,并将燃料量从前一 从进气流量Qa和期望的空燃比A / F计算要供应到气缸的期望燃料量Qa /(A / F),并根据计算结果确定当前燃料喷射量Gf 使用以下等式另外,通过从由下式估计的膜质量中减去要传送到圆筒的循环燃料量的计算值来实现精确的膜质量估计 并且根据发动机的每个行程的实际燃料喷射量获得的每个周期的壁沉积燃料量的计算值与剩余的膜质量相加,从而估计当前的膜质量。
    • 6. 发明公开
    • Navigation system furnished with means for estimating error of mounted sensor
    • 安装在具有用于估计一个传感器的误差导航系统
    • EP0715150A1
    • 1996-06-05
    • EP94118762.7
    • 1994-11-29
    • Xanavi Informatics CorporationHITACHI, LTD.
    • Hoshino, MasatoshiOho, ShigeruGunji, YasuhiroKuroda, HiroshiTakano, KenjiNagashima, YoshimasaOnari, Mikihiko
    • G01C21/20G01C21/16H01Q1/12
    • H01Q1/1257G01C21/165G01C21/28
    • A navigation system which can enhance the position determining accuracy of a mobile object without employing any high precision measuring instrument. The navigation system comprises a GPS range measuring device (101 in Fig. 1), an angular velocity measuring device (102), a velocity measuring device (103) and an azimuth measuring device (104), which measure the motion of the mobile object; a GPS range error estimating device (105), an angular velocity error estimating device (106), a velocity, error estimating device (107) and an azimuth error estimating device (108), which estimate errors involved in the respectively corresponding measuring devices; and a position calculating device (109) which calculates the position of the mobile object from the outputs of the error estimating devices. The error estimating devices are implemented by Kalman filters and averaging processes. The factors of the errors of the individual measuring devices are assumed, and the outputs thereof are corrected, so that the position of the mobile object can always be determined at a high accuracy without employing any high precision sensor.
    • 一种导航系统,其能够提高移动体的位置确定性采矿精度而没有任何用人高精度测量仪器。 该导航系统包括GPS测距装置(101 1中所示)上的角速度测定装置(102),速度测量装置(103),并在方位角测量装置(104),测量移动物体的运动 ; 一个GPS误差范围估计装置(105),以角速度误差估计装置(106),速度,误差估计装置(107)和到方位角误差估计装置(108),估计在分别对应的测量装置涉及的错误; 以及位置计算装置(109),其计算所述移动物体的从误差估计装置的输出的位置。 估计装置的误差是通过卡尔曼滤波器和平均化处理来实现。 各个测量设备的误差的因素被假定,并且其输出被校正的,所以没有移动物体的位置可以总是确定性的开采以高精度而没有任何用人高精度传感器。