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    • 21. 发明授权
    • Air-fuel ratio feedback control method for internal combustion engines
    • 内燃机空燃比反馈控制方法
    • US4913120A
    • 1990-04-03
    • US321261
    • 1989-03-09
    • Sachito FujimotoShuichi Hosoi
    • Sachito FujimotoShuichi Hosoi
    • F02D41/10F02D41/00F02D41/14
    • F02D41/1491
    • An air-fuel ratio feedback control method for an internal combustion engine, in which when the engine is operating in a feedback control region, the air-fuel ratio of an air-fuel mixture being supplied to the engine is controlled by the use of a correction coefficient varying in response to the output of an exhaust gas ingredient concentration sensor arranged in the exhaust system of the engine. When the engine has shifted to a predetermined high load region within the feedback control region, in which the rate of change in values of an engine operating parameter is larger than a predetermined value, the air-fuel ratio feedback control is effected by the use of a first average value of the correction coefficient, calculated when the engine is in the predetermined high load region. When the engine has shifted to a second predetermined region within the feedback control region other than the predetermined high load region, the feedback control is effected by the use of a second average value of the correction coefficient, calculated in the second predetermined region, in a manner different from that of calculating the first average value.
    • 一种用于内燃机的空燃比反馈控制方法,其中当发动机在反馈控制区域中操作时,通过使用发动机来控制供给发动机的空气燃料混合物的空燃比 校正系数响应于布置在发动机的排气系统中的排气成分浓度传感器的输出而变化。 当发动机已经转移到反馈控制区域内的预定高负荷区域时,其中发动机运转参数值的变化率大于预定值时,空燃比反馈控制通过使用 当发动机处于预定的高负载区域时计算的校正系数的第一平均值。 当发动机已经转移到除了预定高负载区域之外的反馈控制区域内的第二预定区域时,通过使用在第二预定区域中计算的校正系数的第二平均值,在 方式与计算第一平均值的方式不同。
    • 25. 发明授权
    • Evaporative fuel control system for internal combustion engines
    • 内燃机蒸发燃料控制系统
    • US5850820A
    • 1998-12-22
    • US771255
    • 1996-12-20
    • Kojiro TsutsumiShigeto KashiwabaraYasunari SekiSachito Fujimoto
    • Kojiro TsutsumiShigeto KashiwabaraYasunari SekiSachito Fujimoto
    • F02D41/00F02D41/14F02M25/08F02M37/04
    • F02M25/0809F02D41/0032F02M25/08
    • An evaporative fuel control system for an internal combustion engine having a throttle valve arranged in the intake system. A canister adsorbs evaporative fuel generated in the fuel tank. A purging passage extends between the canister and the intake system, for purging evaporative fuel into the intake system at a location downstream of the throttle valve, and a purge control valve is arranged across the purging passage, for controlling the flow rate of evaporative fuel supplied to the intake system through the purging passage. When the engine is in a predetermined operating condition, the flow rate of evaporative fuel supplied to the engine is changed by controlling the purge control valve, then the degree of influence of the evaporative fuel on an air-fuel ratio of a mixture supplied to the engine is detected before and after the changing of the flow rate of the evaporative fuel, and an operating error of the purge control valve is determined based on the detected degree of influence.
    • 一种用于内燃机的蒸发燃料控制系统,其具有布置在进气系统中的节流阀。 一个罐吸附燃料箱中产生的蒸发燃料。 清洗通道在罐和进气系统之间延伸,用于在节流阀下游的位置处将蒸发燃料吹扫到进气系统中,并且净化控制阀布置在净化通道两侧,用于控制供应的蒸发燃料的流量 通过清洗通道进入进气系统。 当发动机处于预定操作状态时,通过控制排气控制阀来改变供给发动机的蒸发燃料的流量,然后蒸发燃料对供给到发动机的混合物的空燃比的影响程度 在改变蒸发燃料的流量之前和之后检测发动机,并且基于检测到的影响程度来确定清洗控制阀的操作误差。
    • 29. 发明授权
    • Air-fuel ratio feedback control method for internal combustion engines
    • 内燃机空燃比反馈控制方法
    • US4796589A
    • 1989-01-10
    • US148486
    • 1988-01-26
    • Sachito FujimotoKazunari Yamashita
    • Sachito FujimotoKazunari Yamashita
    • F02D41/00F02D41/14F02M23/08F02B3/00
    • F02D41/1491
    • A method of effecting feedback control of the air-fuel ratio of an air-fuel mixture being supplied to an internal combustion engine, to bring the air-fuel ratio to desired values by correcting a fuel quantity to be supplied to the engine by means of a correction coefficient which varies in response to output from an exhaust gas concentration sensor, when the engine is operating in an air-fuel ratio feedback control region. An average value of values of the correction coefficient obtained is calculated while the engine is operating in the feedback control region. The calculated average value is corrected in dependence on a temperature of the engine and the feedback control is initiated by using the corrected average value as an initial value of the correction coefficient when the engine has shifted into the feedback control region from the another region. The calculated average value is corrected to such a value as to make the air-fuel ratio leaner as the engine temperature is lower.
    • 一种对供给到内燃机的空气燃料混合物的空燃比的反馈控制的方法,通过将供给发动机的燃料量修正为期望值,借助于 当发动机在空燃比反馈控制区域中运行时,响应于排气浓度传感器的输出而变化的校正系数。 在发动机在反馈控制区域中操作时,计算所获得的校正系数的值的平均值。 计算出的平均值根据发动机的温度进行校正,并且当发动机从另一区域转移到反馈控制区域时,通过使用校正的平均值作为校正系数的初始值来启动反馈控制。 计算出的平均值被校正为使得随着发动机温度较低而使空燃比变稀的值。
    • 30. 发明授权
    • Fuel injection control method for internal combustion engines at
acceleration
    • 内燃机加速燃油喷射控制方法
    • US4753210A
    • 1988-06-28
    • US80345
    • 1987-07-31
    • Sachito FujimotoMakoto Hashiguchi
    • Sachito FujimotoMakoto Hashiguchi
    • F02B3/00F02D41/00F02D41/10
    • F02D41/105F02B3/00
    • A fuel injection control method for an internal combustion engine wherein synchronous fuel injection is effected in synchronism with control pulses generated at predetermined crank angle positions of the engine corresponding to suction strokes of respective engine cylinders to supply the engine with a quantity of fuel required for operating conditions of the engine, and when the engine is operating in a predetermined acceleration condition, asynchronous fuel injection is effected independently of the above control pulses to supply the engine with an additional quantity of fuel. The quantity of fuel to be supplied by the synchronous fuel injection is decreased by a predetermined amount immediately after the asynchronous fuel injection is effected. The predetermined amount of fuel corresponds to the quantity of fuel to be supplied by the asynchronous fuel injection.
    • 一种用于内燃机的燃料喷射控制方法,其中同步燃料喷射与对应于各发动机气缸的吸入冲程的发动机的预定曲柄角位置处产生的控制脉冲同步进行,以向发动机提供运行所需的燃料量 发动机的条件,并且当发动机在预定的加速条件下运行时,独立于上述控制脉冲实现异步燃料喷射,以向发动机提供额外量的燃料。 在进行异步燃料喷射之后,由同步燃料喷射供给的燃料的量减少规定量。 预定量的燃料对应于由异步燃料喷射供给的燃料量。