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    • 25. 发明授权
    • Control system parameter monitor
    • 控制系统参数监控
    • US06968826B2
    • 2005-11-29
    • US10065685
    • 2002-11-08
    • Jeffrey Allen Doering
    • Jeffrey Allen Doering
    • F02D41/14F02D41/24G01M99/00F02P5/00
    • F02D41/22F02D41/1401F02D41/1497F02D41/187F02D41/2451F02D41/263F02D2041/1422F02D2041/1433F02D2041/1437F02D2200/1004F02D2200/703F02D2250/18
    • A system and method for monitoring a control system parameter determine a difference between a desired and estimated or measured parameter value, apply a weighting factor to the difference, and select a control strategy based on the weighted difference. The weighting factor generally reflects the confidence in the accuracy of the parameter value determined by the parameter monitor. The weighting factor may be determined based on one or more engine or ambient operating conditions or parameters, or based on statistical analyses of monitor values and/or control system parameter values, for example. In one embodiment, an engine torque monitor for an electronic throttle control system uses percent torque deviation and rate of change to select an appropriate weighting factor and determine whether a deviation between desired and estimated or measured torque selects an alternative control strategy.
    • 用于监视控制系统参数的系统和方法确定期望和估计或测量的参数值之间的差异,将加权因子应用于差异,并且基于加权差异选择控制策略。 加权因子通常反映了由参数监视器确定的参数值的准确性的置信度。 加权因子可以基于一个或多个引擎或环境操作条件或参数,或者基于监视值和/或控制系统参数值的统计分析来确定。 在一个实施例中,用于电子节气门控制系统的发动机扭矩监测器使用百分比转矩偏差和变化率来选择适当的加权因子,并且确定期望和估计或测量的扭矩之间的偏差是否选择替代控制策略。
    • 27. 发明授权
    • Air/fuel ratio control system
    • 空/燃比控制系统
    • US5954039A
    • 1999-09-21
    • US53217
    • 1998-04-01
    • Jeffrey Allen DoeringAllan Joseph KotwickiBrent Edward Sealy
    • Jeffrey Allen DoeringAllan Joseph KotwickiBrent Edward Sealy
    • F02D41/14
    • F02D41/1443F02D41/1456
    • An air/fuel control system (8) and method for an engine (28) having two engine banks coupled to a single catalytic converter (50) uses first and second exhaust gas oxygen sensors (44, 55) coupled to respective first and second exhaust manifolds (56, 57) and various engine operating parameters. During a first set of engine operating conditions, air/fuel control system (8) maintains the exhaust air/fuel ratio oscillations of the two bank in phase with one another. During a second set of engine operating conditions, air/fuel control system (8) maintains the exhaust air/fuel ratio oscillations of the two bank 180 degrees out of phase with one another. When transitioning, emission impacts are minimized.
    • 具有耦合到单个催化转化器(50)的两个发动机组的用于发动机(28)的空气/燃料控制系统(8)和方法使用第一和第二排气氧传感器(44,55),其耦合到相应的第一和第二排气 歧管(56,57)和各种发动机工作参数。 在第一组发动机运行条件下,空气/燃料控制系统(8)保持两组的排气/燃料比振荡相位相位。 在第二组发动机操作条件期间,空气/燃料控制系统(8)将两组的排气空气/燃料比振荡保持彼此相位相差180度。 过渡时,排放影响最小化。