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    • 67. 发明授权
    • Exhaust gas recirculation system of an internal combustion engine
    • 内燃机排气再循环系统
    • US4170973A
    • 1979-10-16
    • US849556
    • 1977-11-08
    • Hidetaka NohiraKiyoshi KobashiJiro Nakano
    • Hidetaka NohiraKiyoshi KobashiJiro Nakano
    • F02M25/07F02D41/18F02M25/06
    • F02D41/18F02M26/57
    • Disclosed is an EGR system of an internal combustion engine, in which a part of the exhaust gas is drawn out from an exhaust pipe and returned to an intake pipe through a control valve, and a reference pressure in the intake pipe corresponding to the amount of recirculated exhaust gas, predetermined by experiment (beforehand) in various combinations of engine intake air flow and speed, is memorized in a memorizing device. The reference pressure responding to the amount of sucked air being introduced into the engine and the engine rotating speed in the case of actual operation of the engine is read out from the memorizing device and, then, compared with the real pressure in the intake pipe in the case of actual operation of the engine. The control valve has a diaphragm chamber, into which positive or negative pressure is introduced, which pressure is controlled by a solenoid valve actuated by a signal from a control device so as to make the real intake pipe pressure coincide with the reference intake pipe pressure.
    • 本发明公开了一种内燃机的EGR系统,其中一部分废气从排气管抽出并通过控制阀返回到进气管,并且进气管中的基准压力对应于 在发动机进气流和速度的各种组合中通过实验(预先)预先确定的再循环排气被记忆在记忆装置中。 从记忆装置读出在发动机实际运转的情况下,与引入发动机的吸入空气量相对应的基准压力和发动机转速,从而与进气管中的实际压力 发动机的实际运行情况。 控制阀具有隔膜室,其中引入正压或负压,该压力由来自控制装置的信号致动的电磁阀控制,以使真正的进气管压力与参考进气管压力一致。
    • 68. 发明授权
    • Computer control of an exhaust gas recirculation device for an internal
combustion engine
    • 用于内燃机的废气再循环装置的计算机控制
    • US4164032A
    • 1979-08-07
    • US858533
    • 1977-12-07
    • Hidetaka NohiraKiyoshi KobashiJiro Nakano
    • Hidetaka NohiraKiyoshi KobashiJiro Nakano
    • F02M25/07F02D21/08F02D41/26F02M25/06G06F15/46
    • F02D41/0052F02D41/26F02M26/57F02D2200/0406Y02T10/47
    • Disclosed herein is a computer control system of an exhaust gas recirculation device for an internal combustion engine, wherein values of the parameters of desired EGR ratios when various conditions in the engine intake system exist are preliminarily stored in the memory of the computer, and wherein a value of a parameter is read out from the memory by detecting a value of the engine condition during its operation. In the system, values of temperature correction factors with respect to at least one temperature characteristic of the engine are also preliminarily stored in the memory. A temperature correction value is read out from the memory in accordance with a detected temperature value of at least one portion of the engine. The computer calculates the amount of EGR needed from the read out values of desired EGR and temperature correction and produces an electrical signal for controlling operation of the EGR value.
    • 本文公开了一种用于内燃机的排气再循环装置的计算机控制系统,其中存在发动机进气系统中的各种条件时所需EGR率的参数的值被预先存储在计算机的存储器中,并且其中 通过在其操作期间检测发动机状况的值来从存储器读出参数的值。 在该系统中,相对于发动机的至少一个温度特性的温度校正系数的值也预先存储在存储器中。 根据发动机的至少一部分的检测温度值,从存储器读出温度校正值。 计算机根据期望的EGR和温度校正的读出值计算所需的EGR量,并产生用于控制EGR值的操作的电信号。