Flow meter
    73.
    发明授权
    Flow meter 失效
    流量计

    公开(公告)号:US06938611B2

    公开(公告)日:2005-09-06

    申请号:US10351757

    申请日:2003-01-27

    Abstract: The flow meter is a device having a laser Doppler anemometer (LDA) which measures the instantaneous center line velocity of fluid flow in a pipe and processes the instantaneous velocity so obtained to compute the volumetric flow rate, mass rate, and other flow characteristics as instantaneous quantities and/or integrated over a time interval using an electronic processing method which provides an exact solution to the Navier-Stokes equations for any periodically oscillating flow. The flow meter is particularly adapted for measuring the flow characteristics of high pressure automotive fuel injection systems. Three embodiments of the flow meter are described, including a stationary stand for off-line bench testing flow rate in a fuel injection system, a portable flow meter for inline testing in a vehicle's fuel line, and an on-board flow meter sensor connected to an engine control module.

    Abstract translation: 流量计是具有激光多普勒风速计(LDA)的装置,其测量管道中流体流动的瞬时中心线速度,并处理如此获得的瞬时速度,以将体积流量,质量比和其他流量特性计算为瞬时 数量和/或使用电子处理方法在时间间隔内集成,其为任何周期性振荡流提供对Navier-Stokes方程的精确解。 流量计特别适用于测量高压汽车燃油喷射系统的流量特性。 描述了流量计的三个实施例,包括用于燃料喷射系统中的离线台架测试流量的固定支架,用于在车辆燃料管线中进行在线测试的便携式流量计,以及连接到 发动机控制模块。

    Detection of fuel dynamical steady state
    74.
    发明授权
    Detection of fuel dynamical steady state 有权
    检测燃料动态稳态

    公开(公告)号:US06827069B1

    公开(公告)日:2004-12-07

    申请号:US10664328

    申请日:2003-09-17

    Abstract: An engine control system that identifies fuel dynamical steady state (FDSS) includes a cylinder and a controller that determines a detection period. The controller monitors a mass of fuel ingested by the cylinder during the detection period. The controller identifies FDSS if the mass of fuel remains within a predetermined range during the detection period.

    Abstract translation: 识别燃料动态稳态(FDSS)的发动机控制系统包括确定检测周期的气缸和控制器。 控制器在检测期间监测由气缸吸收的燃料质量。 在检测期间燃料质量保持在预定范围内,控制器识别FDSS。

    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine
    77.
    发明授权
    Method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine 失效
    使用气体浓度传感器来精确地控制内燃机的空燃比的方法和装置

    公开(公告)号:US06568240B1

    公开(公告)日:2003-05-27

    申请号:US09480661

    申请日:2000-01-11

    Abstract: The present invention provides a method and apparatus using a gas concentration sensor for accurately controlling an air fuel ratio in an internal combustion engine, featuring in that before the fuel-vaporized gas purged from the canister enters into the intake manifold whereat the sensor detects the gas concentration of the purged gas, the sensor is adjusted so as to adjust a zero point (or zero output level) of the sensor output. In step 100 of FIG. 7, a judgment is made as to whether the flow rate of air reaches a predetermined level. In step 110, processing for zero-point correction of the gas concentration sensor is performed. Specifically, in a state in which the purge valve 17 is closed, concentration of purge gas is measured by use of the gas concentration sensor 4, and a sensor output S1 at that time is obtained. Subsequently, the sensor output S1 is compared with a correct sensor output S0 in order to obtain a difference &Dgr;S therebetween. Accordingly, during subsequent gas concentration measurement, a value S3 obtained through subtraction of the difference &Dgr;S from an obtained sensor output S2 is used as a correct sensor output. In step 120, a supply amount of purge gas, i.e., a concentration of the purge gas to be supplied is obtained. In subsequent step 130, the purge valve 17 is driven in order to supply purge gas to the intake pipe 2 in a required amount (A%).

    Abstract translation: 本发明提供了一种使用气体浓度传感器来精确地控制内燃机中的空燃比的方法和装置,其特征在于在从罐排出的燃料汽化气体进入进气歧管之前,传感器检测到气体 净化气体的浓度,调节传感器以调节传感器输出的零点(或零输出水平)。 在图1的步骤100中 如图7所示,判断空气流量是否达到预定水平。 在步骤110中,进行气体浓度传感器的零点校正处理。 具体地说,在关闭吹扫阀17的状态下,利用气体浓度传感器4测定净化气体的浓度,得到此时的传感器输出S1。 随后,将传感器输出S1与正确的传感器输出S0进行比较,以获得它们之间的差值DELTAS。 因此,在后续的气体浓度测量中,使用通过从获得的传感器输出S2中减去差值DELTAS获得的值S3作为正确的传感器输出。 在步骤120中,获得净化气体的供给量,即所供给的净化气体的浓度。 在随后的步骤130中,驱动排气阀17,以便以所需量(A%)向进气管2供应净化气体。

    Engine control device
    78.
    发明申请
    Engine control device 失效
    发动机控制装置

    公开(公告)号:US20030079725A1

    公开(公告)日:2003-05-01

    申请号:US10038580

    申请日:2002-01-08

    Inventor: Masaki Nakamichi

    Abstract: An engine control device comprising a reference voltage memory means 21 for memorizing reference voltage VAFS_STD of AFS9 for controlling an engine 1 under a normal state, a comparing means 22 for comparing an output voltage VAFS from the AFA9 when the engine 1 is stopped with the reference voltage VAFS_STD and operating a deviation nullVAFS, and a corrections means 23 for correcting the output voltage VAFS from the AFS9 based on the deviation nullVAFS so that the output voltage VAFS becomes the reference voltage VAFS_STD, wherein a fuel injection quantity Tinj is operated based on the output voltage VAFS_OBJ from the sensor obtained by the correction means 23, whereby engine stall caused by failure of the sensor for controlling the engine is avoidable.

    Abstract translation: 一种发动机控制装置,包括用于存储用于在正常状态下控制发动机1的AFS9的参考电压VAFS_STD的参考电压存储装置21,用于将发动机1停止时的来自AFA9的输出电压VAFS与参考值进行比较的比较装置22 电压VAFS_STD并且操作偏差DELTAVAFS,以及校正装置23,用于基于偏差DELTAVAFS校正来自AFS9的输出电压VAFS,使得输出电压VAFS变为参考电压VAFS_STD,其中燃料喷射量Tinj基于 由校正装置23获得的传感器的输出电压VAFS_OBJ,由此可以避免由用于控制发动机的传感器的故障引起的发动机失速。

    Sensor array for detecting electrical characteristics of fluids
    80.
    发明授权
    Sensor array for detecting electrical characteristics of fluids 有权
    用于检测流体电气特性的传感器阵列

    公开(公告)号:US06419807B1

    公开(公告)日:2002-07-16

    申请号:US09485201

    申请日:2000-07-18

    Abstract: A sensor array for detecting the distribution of fluids having different electrical characteristics, comprising a multilayer structure including a first layer which defines an array of spaced apart sensor electrodes, a second layer separated from the first layer by dielectric material and defining a conductive screen, and a third layer separated from the second layer by dielectric material and defining a series of spaced apart elongate connections, each sensor being connected to a respective connection by a respective conductive path extending through an opening in the conductive screen defined by the second layer.

    Abstract translation: 一种用于检测具有不同电特性的流体分布的传感器阵列,包括多层结构,其包括限定间隔开的传感器电极阵列的第一层,通过电介质材料与第一层隔离并限定导电屏的第二层,以及 通过电介质材料与第二层隔开的第三层并且限定一系列间隔开的细长连接,每个传感器通过延伸穿过由第二层限定的导电屏幕中的开口的相应导电路径连接到相应的连接。

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