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    • 5. 发明授权
    • Air/fuel ratio control for an internal combustion engine with improved
fail-safe device
    • 具有改进的故障安全装置的内燃机的空燃比控制
    • US4750128A
    • 1988-06-07
    • US827499
    • 1986-02-07
    • Masakazu HondaAkio KobayashiSusumu HaradaTakehiro Kikuti
    • Masakazu HondaAkio KobayashiSusumu HaradaTakehiro Kikuti
    • F02D41/34F02D41/22F02D41/26F02D37/02
    • F02D41/266
    • In a computer-controlled fuel supply system of an internal combustion engine, two basic pieces of information, i.e. airflow data Q and engine speed data N, are processed by an analog operating circuit to produce a basic injection pulse signal, whose pulse width equals Q/N. The data Q/N is used by a microcomputer, when the microcomputer is in normal state, to produce a corrected injection pulse signal by using various engine parameters in the same manner as in conventional arrangements, and fuel flow is determined by the width of the corrected injection pulse signal. When malfunctioning of the microcomputer is detected, the basic injection pulse signal from the analog operating circuit is used in place of the corrected injection pulse signal from the microcomputer to determine the fuel flow. The width of the basic injection pulse signal may be lengthened when the microcomputer is in abnormal state so that air/fuel ratio is almost accurately controlled without the microcomputer.
    • 在内燃机的计算机控制的燃料供给系统中,通过模拟运算电路处理两条基本的信息即气流数据Q和发动机转速数据N,以产生脉冲宽度等于Q的基本喷射脉冲信号 / N。 数据Q / N由微型计算机使用,当微计算机处于正常状态时,以与常规布置相同的方式通过使用各种发动机参数产生校正喷射脉冲信号,并且燃料流量由 校正喷射脉冲信号。 当检测到微计算机的故障时,使用来自模拟操作电路的基本喷射脉冲信号代替来自微型计算机的校正喷射脉冲信号,以确定燃料流量。 当微型计算机处于异常状态时,基本喷射脉冲信号的宽度可以延长,从而在没有微型计算机的情况下几乎精确地控制空气/燃料比。
    • 6. 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。
    • 7. 发明授权
    • Air-fuel ratio control apparatus
    • 空燃比控制装置
    • US4348727A
    • 1982-09-07
    • US109516
    • 1980-01-04
    • Akio KobayashiTakehiro KikuchiToshio KondoMasahiko Tajima
    • Akio KobayashiTakehiro KikuchiToshio KondoMasahiko Tajima
    • F02D41/34F02D41/14F02D41/24F02D41/26F02D45/00G06F15/20F02B3/12F02D5/00
    • F02D41/2451F02D41/2422F02D41/2445F02D41/263
    • The basic fuel injection amount determined in accordance with the rpm and the amount of air drawn into an engine is corrected by first, second and third compensation amounts determined in accordance with the engine operating conditions. The second compensation amount is varied by a predetermined value in response to the output of an O.sub.2 sensor at intervals of a predetermined time. The third compensation amount is read out from the location of a non-volatile memory addressed in accordance with the engine rpm and the intake air amount, varied by another predetermined value at intervals of another predetermined time in accordance with the value of the second compensation amount and stored again in the location from which it was read out. Before starting the compensation of the fuel injection amount, the particular bit pattern stored in the non-volatile memory is checked so as to self-check the third compensation amount data in the non-volatile memory.
    • 根据发动机工作条件确定的第一,第二和第三补偿量来校正根据转速和吸入发动机的空气量确定的基本燃料喷射量。 第二补偿量响应于预定时间间隔的O 2传感器的输出而改变预定值。 第三补偿量从根据发动机转速和进气量寻址的非易失性存储器的位置读出,根据第二补偿量的值在另一个预定时间间隔内变化另一个预定值 并再次存储在从其读出的位置。 在开始燃料喷射量的补偿之前,检查存储在非易失性存储器中的特定位模式,以便自动检查非易失性存储器中的第三补偿量数据。