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    • 83. 发明授权
    • Apparatus for measuring a flow rate of intake air for an engine
    • 用于测量发动机的进气量的流量的装置
    • US4649745A
    • 1987-03-17
    • US671615
    • 1984-11-15
    • Toshio KondoAkio KobayashiShunichiro HiromasaAkira MasudaMasahiko Miyaki
    • Toshio KondoAkio KobayashiShunichiro HiromasaAkira MasudaMasahiko Miyaki
    • G01F1/698G01F1/68
    • G01F1/6986
    • An apparatus for measuring a flow of intake air to an engine includes a bridge circuit including a heat resistor placed in an intake air path of the engine, a resistor for sensing the temperature of the intake air, and a plurality of balance resistors. A heating current is supplied to this bridge circuit through a transistor controlled by a periodical current-passage control signal generated by a microcomputer. A signal Vh, representing a temperature change of the heat resistor heated by the heating current, is detected by the microcomputer. A first correction value is computed by using a difference between the detected value from the microcomputer and a signal Vho, representing temperature of the heat resistor when the bridge circuit is balanced at normal temperature. A time width correction value .DELTA.Do1 is computed from a table on the basis of the first correction value. The correction signal .DELTA.Do1 is used for correcting the current passage time. The current passage time width as corrected is used for computing a flow of the intake air.
    • 用于测量到发动机的进气的流量的装置包括桥接电路,其包括放置在发动机的进气通道中的热电阻器,用于感测进气的温度的电阻器和多个平衡电阻器。 通过由微型计算机产生的周期性电流通过控制信号控制的晶体管,向该桥式电路供给加热电流。 由微型计算机检测表示由加热电流加热的热电阻的温度变化的信号Vh。 通过使用来自微型计算机的检测值和信号Vho之间的差来计算第一校正值,该信号Vho表示在常规温度下桥接电路平衡时的热电阻器的温度。 基于第一校正值从表中计算时间宽度校正值DELTA Do1。 校正信号DELTA Do1用于校正当前通过时间。 校正的当前通过时间宽度用于计算进气的流量。
    • 84. 发明授权
    • Electronic fuel injection control system for internal combustion engine
    • 内燃机电子燃油喷射控制系统
    • US4574761A
    • 1986-03-11
    • US680046
    • 1984-12-10
    • Shigenori IsomuraToshio KondoAkio KobayashiTakehiro Kikuchi
    • Shigenori IsomuraToshio KondoAkio KobayashiTakehiro Kikuchi
    • F02D41/00F02D41/34
    • F02D41/345Y02T10/44
    • In an electronic fuel injection control system for an internal combustion engine, a first integration circuit is responsive to an angular signal with a time period in inverse proportion to the rotational speed of the engine for integrating the first half of the time period of the angular signal and for producing a first integration signal indicative of a resultant value of the integration, a hold circuit is arranged to hold the value of the first integration signal upon lapse of the first half of the time period and to produce a hold signal of the held value and maintain it for the second half of the time period and the first half of the time period of the following angular signal, a second integration circuit is responsive to the angular signal for integrating the value of an air quantity signal indicative of the quantity of air drawn into the engine at each start of the first and second halves of the time period and for producing a second integration signal indicative of a resultant value of the integration of the value of the air quantity signal, and a signal generator is arranged to determine a fuel injection time based on the time required for arrival of the valve of the second integration signal to the level of the hold signal after each start of the first and second halves of the time period.
    • 在用于内燃机的电子燃料喷射控制系统中,第一积分电路响应角度信号,其中时间周期与发动机的转速成反比,用于积分角度信号的时间段的前半部分 并且为了产生指示积分的结果值的第一积分信号,保持电路被布置成在经过该时间段的前半部分时保持第一积分信号的值,并产生保持值的保持信号 并且将其保持在下一个时间段的后半部分和后续角度信号的时间段的前半部分中,第二积分电路响应角度信号来积分指示空气量的空气量信号的值 在时间段的第一和第二半部的每个开始处被吸入引擎,并且用于产生指示结果的第二积分信号 空气量信号的值的积分值和信号发生器被布置成基于第二积分信号的阀到达所需的时间到每次启动后的保持信号的电平来确定燃料喷射时间 的时间段的第一和第二半。
    • 89. 发明授权
    • Electronic control for fuel injection
    • 燃油喷射电子控制
    • US4457282A
    • 1984-07-03
    • US390963
    • 1982-06-22
    • Toshihiko MuramatsuAkio KobayashiTomomi EinoToshio Kondo
    • Toshihiko MuramatsuAkio KobayashiTomomi EinoToshio Kondo
    • F02D41/04F02D41/18F02D41/26F02D5/02
    • F02D41/182F02D41/263
    • An electronic control system for fuel injection into an engine controls an air-fuel ratio at a desired air-fuel ratio during a high load operation of the engine. The electronic control system performs the operations of detecting operating parameters of the engine, computing by a computing unit a time width in accordance with the detected operating parameters, selecting a maximum time width value of the injection pulse from a preliminarily stored table of maximum time width values thereof in accordance with the value of at least one of the detected operating parameters, comparing the computed time width value with the selected maximum time width value, limiting the computed time width value in accordance with the selected maximum time width value, and applying the injection pulse to the fuel injectors, thereby controlling the air-fuel ratio under the high load conditions at a desired air-fuel ratio and also preventing the malfunction of continuous fuel supply from occurring in the fuel injectors.
    • 用于燃料喷射到发动机中的电子控制系统在发动机的高负载运行期间控制所需空燃比的空燃比。 电子控制系统执行检测发动机的运行参数的操作,由计算单元根据检测到的运行参数计算时间宽度,从预先存储的最大时间宽度表选择喷射脉冲的最大时间宽度值 根据所检测到的操作参数中的至少一个的值,将所计算的时间宽度值与所选择的最大时间宽度值进行比较,根据所选择的最大时间宽度值限制计算出的时间宽度值,并将 喷射脉冲,从而在高负载条件下以期望的空燃比控制空燃比,并且还防止在燃料喷射器中发生连续燃料供应的故障。
    • 90. 发明授权
    • Electronically controlled fuel injection system
    • 电子控制燃油喷射系统
    • US4437446A
    • 1984-03-20
    • US358923
    • 1982-03-17
    • Shigenori IsomuraAkio KobayashiKatsushi KatoIchiro KowadaSachio Nishii
    • Shigenori IsomuraAkio KobayashiKatsushi KatoIchiro KowadaSachio Nishii
    • F02D41/34F02D41/04F02D41/12F02D41/18F02D45/00F02B3/00
    • F02D41/12F02D41/182
    • An electronically controlled fuel injection system including an air flow sensor disposed in the intake pipe of an internal combustion engine upstream of its throttle valve to detect the amount of air flow to the engine and a control unit responsive to the output signal of the air flow sensor to adjust the amount of fuel to be supplied to the engine, is further provided with a fuel enrichment circuit responsive to the output signal of the air flow sensor whereby when the amount of air flow changes in a direction to decrease, a signal commanding an increase in fuel amount which is proportional to the rate of the change is fed to the control unit. The fuel enrichment circuit has an upper limit value such that the increase in fuel amount is prevented from exceeding an amount corresponding to the upper limit value. The fuel enrichment circuit is adapted so that the amount of fuel is not increased when the rate of change of the air flow in the decreasing direction is smaller than a predetermined lower limit value.
    • 一种电子控制的燃料喷射系统,包括设置在其节流阀上游的内燃机的进气管中的空气流量传感器,以检测到发动机的空气量和响应于空气流量传感器的输出信号的控制单元 为了调整供给到发动机的燃料量,还设置有响应于空气流量传感器的输出信号的燃料浓缩电路,由此当气流量在减小的方向上变化时,指示增加的信号 与变化率成比例的燃料量被供给到控制单元。 燃料浓缩电路具有上限值,使得防止燃料量的增加超过对应于上限值的量。 燃料浓缩电路适于使得当气流在减小方向上的变化率小于预定下限值时燃料量不增加。