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    • 4. 发明申请
    • EGR system
    • EGR系统
    • US20060117750A1
    • 2006-06-08
    • US11005983
    • 2004-12-07
    • Syed ShahedGregory Hampson
    • Syed ShahedGregory Hampson
    • F02M25/07
    • F02D41/008F02B3/06F02B33/32F02B33/34F02B33/38F02B37/00F02B37/12F02B39/04F02D41/0065F02D41/0077F02M26/05F02M26/40F02M26/47F02M26/54F02M26/70Y02T10/47
    • A flow control mechanism connected to the intake and exhaust systems of an engine. The mechanism may achieve recirculation of exhaust gases despite varying differential pressures or delta pressures between the systems, particularly since intake pressures may often exceed exhaust pressures. Pressure sensors may be situated proximate to the input and output of the flow control mechanism. There may a flow sensor proximate to the flow control mechanism. Cylinder pressure or pulse sensors may be situated in or about the engine. A processor may be connected to various sensors and provide prompt active control of a valve or like device in the flow control mechanism. Such valve may operate sufficiently quickly so as to prevent backflow from the intake system into the exhaust system upon sudden pressure changes in the systems. The quickness of the active valve control may also permit recirculating stipulated amounts of exhaust gas to each cylinder.
    • 连接到发动机的进气和排气系统的流量控制机构。 尽管变化的压差或系统之间的差压特别是因为进气压力通常可能超过排气压力,但该机构可以实现废气的再循环。 压力传感器可以位于流量控制机构的输入和输出附近。 流量传感器可以靠近流量控制机构。 气缸压力或脉冲传感器可以位于发动机内或周围。 处理器可以连接到各种传感器并且提供对流量控制机构中的阀或类似装置的迅速主动控制。 这种阀可以足够快地运行,以便在系统中突然的压力变化时防止从进气系统进入排气系统。 主动阀控制的快速性还可以允许将规定量的废气再循环到每个气缸。
    • 5. 发明申请
    • Calibration of engine control systems
    • 发动机控制系统校准
    • US20070156363A1
    • 2007-07-05
    • US11321504
    • 2005-12-29
    • Gregory StewartSyed ShahedSoumitri Kolavennu
    • Gregory StewartSyed ShahedSoumitri Kolavennu
    • G06F19/00F02D23/00G01L25/00G06G7/70
    • G05B11/42
    • A system for automatic multivariable calibration of an engine controller. The system may take inputs which include actuator setpoints, sensor measurements, performance requirements, and so forth. There may be an algorithm to compute engine calibration parameters for the controller. Each of the actuators may be separately stepped through to experimentally obtain actuator input and sensor output data. Algorithmic processing of the experimentally obtained data may be performed to calculate parameters of a model of an engine. A model based control design algorithm may then be invoked to obtain the calibration parameters for a controller. The calibrated controller may be tested with real or simulated engine conditions. The performance related to the parameters may be analyzed and determination of the acceptability of the data be made. If not acceptable, the parameters may be reprocessed. If acceptable, the calibration parameters may be downloaded to the engine controller for application and use.
    • 一种用于发动机控制器自动多变量校准的系统。 系统可以采取包括执行器设定点,传感器测量,性能要求等的输入。 可能有一种计算控制器的引擎校准参数的算法。 每个致动器可以分开地步进通过实验获得致动器输入和传感器输出数据。 可以执行实验获得的数据的算法处理以计算发动机的模型的参数。 然后可以调用基于模型的控制设计算法来获得控制器的校准参数。 校准的控制器可以用实际或模拟的发动机条件进行测试。 可以分析与参数相关的性能,并确定数据的可接受性。 如果不能接受,则可以重新处理参数。 如果可以接受,校准参数可以下载到发动机控制器以供应用和使用。
    • 8. 发明申请
    • Wireless gas composition sensor system
    • 无线气体成分传感器系统
    • US20060174692A1
    • 2006-08-10
    • US11053569
    • 2005-02-07
    • Ulrich BonneRajiv SinghSyed ShahedRichard KirkpatrickAziz RahmanYue Liu
    • Ulrich BonneRajiv SinghSyed ShahedRichard KirkpatrickAziz RahmanYue Liu
    • G01N7/00
    • G01N27/4141
    • A sensor system for detecting the presence of at least one specific component in a fluid medium such as an exhaust gas. A sensor is mounted in a sensor body for detecting the presence of at least one specific component and providing a representative signal that is transmitted to a remote receiver for processing. A power source such as a thermopile provides power for the sensor and the transmitter. Preferred are sensors that detect a plurality of different components in the gas and provide a distinct signal for each component. A preferred transmitter is designed to transmit at a low duty cycle so as to conserve power. A preferred sensor is electronic, has the capability for self-diagnostics and self-calibration, and causes a change in current when exposed to the component, such as a functionalized field effect transistor.
    • 一种传感器系统,用于检测诸如废气的流体介质中至少一个特定部件的存在。 传感器安装在传感器主体中,用于检测至少一个特定部件的存在,并提供传输到远程接收器进行处理的代表信号。 诸如热电堆的电源为传感器和发射器提供电力。 优选的是检测气体中的多个不同组分并为每个组分提供不同信号的传感器。 优选的发射机被设计为以低占空比进行发射以节省功率。 优选的传感器是电子的,具有自我诊断和自校准的能力,并且当暴露于诸如功能化场效应晶体管的部件时导致电流变化。