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    • 94. 发明授权
    • Method and apparatus for optimizing the operation characteristics of an
engine
    • 用于优化发动机的操作特性的方法和装置
    • US4745553A
    • 1988-05-17
    • US685626
    • 1984-12-24
    • Elizabeth A. RavenHenry P. TylerFrancis G. Sollman
    • Elizabeth A. RavenHenry P. TylerFrancis G. Sollman
    • F02D41/14F02D37/00
    • F02D41/1406
    • An engine control method and apparatus for optimizing an operating condition of an engine. A plurality of engine variables are determined and operated upon to direct the control of engine effectors so as to place the engine in an optimum operating condition. In particular, the engine effectors are controlled to minimize the fuel consumption of an engine operating at a steady-state. The system selectively moves a pair of engine effectors so as to determine the sensitivity of the engine variables to changes in effector outputs. Such sensitivities are updated during the system operation. The engine effectors are selectively moved as a function of the engine variable sensitivities in a direction to minimize fuel consumption without violating any predetermined operating limits of the engine variables. Once an optimum operating point is obtained, the system remains at rest and checks for changes in operating conditions that may require a new optimum to be determined.
    • 一种用于优化发动机的运行状态的发动机控制方法和装置。 确定并操作多个发动机变量以引导发动机执行器的控制,以将发动机置于最佳操作状态。 特别地,控制发动机效应器以最小化在稳态下运行的发动机的燃料消耗。 该系统选择性地移动一对发动机效应器,以便确定发动机变量对效果器输出变化的灵敏度。 这种灵敏度在系统操作期间被更新。 在不违反发动机变量的任何预定操作限制的情况下,发动机效应器被选择性地沿着使燃料消耗最小化的方向作为发动机可变灵敏度的函数而移动。 一旦获得最佳工作点,系统将保持静止,并检查可能需要确定新的最佳值的操作条件的变化。
    • 97. 发明授权
    • Air-fuel mixture control for automobile engine having fuel injection
system
    • 具有燃料喷射系统的汽车发动机的空气燃料混合物控制
    • US4399791A
    • 1983-08-23
    • US294506
    • 1981-08-20
    • Kazuo KobayashiHideki TanakaKatsuyoshi IidaJunji Kamite
    • Kazuo KobayashiHideki TanakaKatsuyoshi IidaJunji Kamite
    • F02D41/02F02D21/08F02D37/00F02D41/14F02D43/00F02M25/07F02M25/06F02B3/08F02D17/00
    • F02D41/0052F02D41/1454F02D41/1482F02D41/1483Y02T10/47
    • An air-fuel ratio control system for an automobile engine of a type having a fuel injection system wherein at least two of parameters including the engine speed, the opening of a throttle valve and the negative pressure developed inside a fuel intake passage are utilized to detect the rate of flow of incoming air to be mixed with an injected mist of fuel to form a combustible mixture. The fuel injection system includes a fuel adjusting device so designed as to provide, when the engine operates within a particular operating region, the combustible mixture of an air-fuel mixing ratio lower than that to be supplied to the engine when the latter operates within the other operating region than the particular operating region. The control system comprises a first EGR control device for controlling an EGR control valve according to a control value stored in a memory when the engine operates within the particular operating region and a second EGR control device operable when the engine operates within the other operating region for controlling the EGR control valve in dependence on the concentration of a component of exhaust gases sensed by a composition sensor.
    • 一种用于具有燃料喷射系统的汽车发动机的空燃比控制系统,其中使用包括发动机转速,节气门打开和在燃料进气通道内形成的负压的参数中的至少两个来检测 与喷射的燃料雾混合的进入空气的流动速率形成可燃混合物。 燃料喷射系统包括燃料调节装置,其被设计成当发动机在特定操作区域内操作时提供空气燃料混合比可燃混合比低于在发动机在 其他操作区域比特定操作区域。 控制系统包括:第一EGR控制装置,用于当发动机在特定工作区域内运行时根据存储在存储器中的控制值控制EGR控制阀;以及第二EGR控制装置,当第二EGR控制装置在发动机在另一操作区域内操作时可操作 根据由组合物传感器感测到的废气的分量的浓度来控制EGR控制阀。
    • 99. 发明授权
    • System for feedback control of air/fuel ratio in IC engine with
subsystem to control current supply to oxygen sensor
    • 用于具有子系统的IC引擎中的空燃比的反馈控制系统,以控制对氧传感器的电流供应
    • US4354468A
    • 1982-10-19
    • US193716
    • 1980-10-03
    • Kohki SoneOkamura Kenji
    • Kohki SoneOkamura Kenji
    • F02D35/00F02D37/00F02D41/14F02P5/15G01D21/00G01N27/26G01N27/406G01N27/407G01N27/409G05D11/13F02D5/00
    • G01N27/4071F02D41/1476F02D41/1494G01N27/4065
    • A system for feedback control of air/fuel ratio in an IC engine, utilizing a recently developed oxygen-sensitive device which is provided with a heater and disposed in exhaust gas to provide a feedback signal. This device has a porous solid electrolyte layer with a measurement electrode layer on one side and a reference electrode on the other side facing a substrate. There is a circuit to supply a heating current to the heater and force a DC current to flow in the solid electrolyte layer to cause migration of oxygen ions through the solid electrolyte toward the reference electrode to thereby establish a reference oxygen partial pressure on the reference side of the solid electrolyte layer. To prevent lowering of this oxygen partial pressure while the engine is operated under a high-load condition and the feedback control is discontinued to feed the engine with a fuel-enriched mixture, the control system includes operating condition sensor means and switching means to interrupt the supply of the current to the heater in response to a command signal from the sensor means and, optionally, current regulating means to increase the intensity of current flowing in the solid electrolyte also in response to the command signal.
    • 一种用于IC引擎中的空气/燃料比的反馈控制的系统,利用最近开发的设置有加热器并设置在废气中以提供反馈信号的氧气敏感装置。 该装置具有在一侧具有测量电极层的多孔固体电解质层和面向衬底的另一侧的参考电极。 存在向加热器供给加热电流并迫使直流电流在固体电解质层中流动以使氧离子迁移通过固体电解质朝向参考电极从而在参考侧上建立参考氧分压的电路 的固体电解质层。 为了防止在发动机在高负载条件下运转时该氧分压降低,反馈控制停止,用富燃料混合物供给发动机,控制系统包括操作状态传感器装置和切换装置,以中断 响应于来自传感器装置的命令信号和任选的电流调节装置,还可以响应于命令信号增加在固体电解质中流动的电流强度,来向加热器供应电流。