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    • 9. 发明授权
    • Thermal-type air flow measuring instrument with fluid-direction judging
capability
    • 具有流体方向判断能力的热式气流测量仪
    • US5696321A
    • 1997-12-09
    • US544648
    • 1995-10-18
    • Shinya IgarashiChihiro KobayashiYasunori MouriHitoshi IshikawaKaoru Uchiyama
    • Shinya IgarashiChihiro KobayashiYasunori MouriHitoshi IshikawaKaoru Uchiyama
    • G01F1/68F02D35/00G01F1/684G01F1/69G01F5/00G01M15/00
    • G01F5/00G01F1/684G01F1/6842
    • There is disclosed a thermal-type air flow measuring instrument which judges whether the direction of flow of a fluid, ranging from a static flow to a pulsating flow involving a reverse flow, is forward or reverse, and outputs a signal corresponding to the flow rate of the fluid, thereby measuring the flow rate with high precision. An auxiliary passage is provided in a fluid passage, and is constituted by first, second and third passageways. Two temperature sensing resistors are mounted respectively at an upstream side and a downstream side within the first passageway in close proximity to each other. Most of the fluid, flowed into the first passageway in a forward direction, flows through the second passageway. The third passageway serves to direct a reverse flow of the fluid toward the temperature sensing resistors. Results of measurement of the flow rate of intake air in an internal combustion engine indicate that a minus error due to a pulsating flow, experienced in the conventional construction, is eliminated almost completely, and that a plus error due to a reverse flow is reduced to about 1/10.
    • 公开了一种热式空气流量测量装置,其判断从静止流到涉及逆流的脉动流的流体的流动方向是向前还是反向,并输出与流量对应的信号 的流体,从而以高精度测量流量。 辅助通道设置在流体通道中,并且由第一,第二和第三通道构成。 两个温度感测电阻分别安装在彼此靠近的第一通道内的上游侧和下游侧。 大多数流体沿向前的方向流入第一通道,流过第二通道。 第三通道用于将流体的反向流动引向温度感测电阻器。 内燃机中的进气流量的测定结果表明,传统结构中经历的脉动流量产生的负误差几乎完全消除,由于反向流动引起的正误差减小到 约+ E,fra 1/10 + EE。
    • 10. 发明授权
    • Control apparatus for an internal combustion engine having a carburetor
    • 具有化油器的内燃机的控制装置
    • US4593663A
    • 1986-06-10
    • US110469
    • 1980-01-08
    • Takeshi AtagoYasunori MouriTokuo KosugeToshio FuruhashiOsamu AbeTaiji Hasegawa
    • Takeshi AtagoYasunori MouriTokuo KosugeToshio FuruhashiOsamu AbeTaiji Hasegawa
    • F02D41/02F02D21/08F02D37/00F02D41/04F02D41/14F02D41/26F02D43/00F02M7/12F02M7/24F02M23/04F02M25/07F02P5/15F02M9/10
    • F02D41/0065F02D41/149F02D41/26F02D43/00F02M23/04F02M7/24F02P5/1502Y02T10/146Y02T10/42Y02T10/46Y02T10/47
    • An apparatus for controlling the operation of an internal combustion engine having a carburetor which, controls the air-fuel ratio of the air-fuel mixture supplied to the engine in the steady operating condition of the engine on the basis of predetermined data determined relative to the engine crankshaft rotation speed and intake vacuum and stored in a memory. A three-way catalyst purifies engine exhaust gases, and an output signal from an O.sub.2 sensor in the exhaust system is fed back for the control of the air-fuel ratio in the engine exhaust gases. A circuit checks whether this feedback control is normally carried or not. The air-fuel ratio supplied to the engine in an unsteady operating condition of the engine is controlled by regulating the fuel and air supplied to the engine while bypassing the carburetor, by the sensed values of the intake vacuum, engine crankshaft rotation speed and engine temperature and also depending on the throttle valve position. To control the rate of exhaust gas recirculation, an upper limit and a lower limit of the rate of opening of a recirculation rate regulating valve are determined on the basis of the sensed throttle valve opening, and other predetermined data determined relative to the engine crankshaft rotation speed and intake vaccum is read out from the memory to limit the rate of opening of the recirculation rate regulating valve.
    • 一种用于控制具有化油器的内燃机的操作的装置,其基于相对于所述发动机确定的预定数据来控制在所述发动机的稳定运行状态下供应给所述发动机的所述空气燃料混合物的空燃比 发动机曲轴转速和进气真空度并存储在存储器中。 三元催化剂净化发动机废气,并且将来自排气系统中的O2传感器的输出信号反馈,以控制发动机废气中的空燃比。 电路检查该反馈控制是否正常携带。 在发动机的不稳定运行状态下供给发动机的空燃比通过调节通过进气真空,发动机曲轴转速和发动机温度的检测值来调节供给发动机的燃料和空气,同时绕过化油器 并且还取决于节气门位置。 为了控制废气再循环的速度,基于检测到的节气门开度确定再循环速率调节阀的打开速率的上限和下限,并且相对于发动机曲轴旋转确定的其它预定数据 从存储器中读出速度和进气真空度以限制再循环速率调节阀的打开速率。