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    • 1. 发明授权
    • Method of detecting abnormality in an evaporative fuel-purging system
for internal combustion engines
    • 用于内燃机的蒸发式燃料净化系统的异常检测方法
    • US5085194A
    • 1992-02-04
    • US681937
    • 1991-04-08
    • Shigetaka KurodaHisashi IgarashiHidekazu KanoTakeshi Suzuki
    • Shigetaka KurodaHisashi IgarashiHidekazu KanoTakeshi Suzuki
    • F02D41/00F02D41/22F02M25/08
    • F02M25/0809F02M2025/0845
    • A method of detecting abnormality in an evaporative fuel-purging system (evaporative emission control system) for an internal combustion engine comprises the steps of: (1) determining whether or not the engine is in a predetermined operating condition after completion of warming-up of the engine, (2) temporarily inhibiting purging of evaporative fuel into an intake passage when it is determined that the engine is in the predetermined operating condition, (3) obtaining a first value based on a parameter reflecting an amount of evaporative fuel purged into the intake passage during the temporary inhibition of the purging of the evaporative fuel, (4) obtaining a second value based on the parameter during execution of the purging of the evaporative fuel carried out after the temporary inhibition of the purging of the evaporative fuel, (5) comparing the first value with the second value, and (6) determining whether or not there is abnormality in the evaporative fuel-purging system, based on a result of the comparison.
    • 一种内燃机的蒸发式燃料净化系统(蒸发排放控制系统)的异常检测方法,其特征在于,包括以下步骤:(1)在完成预热后,判定发动机是否处于规定的运行状态 发动机,(2)当确定发动机处于预定操作状态时暂时禁止将蒸发燃料吹入进气通道;(3)基于反映被吹入到所述发动机中的蒸发燃料量的参数获得第一值 (4)在暂时禁止蒸发燃料清除之后,在执行蒸发燃料清除执行期间获得第二值(5) )将第一值与第二值进行比较,以及(6)基于蒸发燃料净化系统是否存在异常,基于 比较的结果。
    • 2. 发明授权
    • Fuel supply control method for internal combustion engines
    • 内燃机燃油供应控制方法
    • US4825834A
    • 1989-05-02
    • US130635
    • 1987-12-09
    • Kazushige ToshimitsuMasayuki UenoHisashi Igarashi
    • Kazushige ToshimitsuMasayuki UenoHisashi Igarashi
    • F02D41/00F02D41/06F02D41/32F02D41/36
    • F02D41/32F02D41/0087F02D41/068F02D41/3094F02D2250/31
    • A fuel supply control method for a multicylinder internal combustion engine equipped with a fuel supply control system including a main fuel injection valve disposed in the intake passage upstream of the throttle valve, and an auxiliary fuel injection valve disposed in the intake passage donwstream of the throttle valve and upstream of the intake manifold, for controlling the fuel supply control system according to operating conditions of the engine. Fuel is supplied by the main fuel injection valve when the engine temperature is lower than a predetermined value, fuel is supplied by the auxiliary fuel injection valve when the engine temperature is higher than the predetermined value and the degree of opening of the throttle valve is smaller than a predetermined value, the fuel pressure applied to both the main fuel injection valve and the auxiliary fuel injection valve is regulated according to a predetermined parameter representing operation conditions of the engine, namely, pressure within the intake passage at a location downstream of the throttle valve, and the predetermined parameter is applied also to controlling the respective basic fuel injection periods of the main fuel injection valve and the auxiliary fuel injection valve.
    • 一种具有燃料供给控制系统的多缸内燃机的燃料供给控制方法,所述燃料供给控制系统包括设置在所述节气门上游的所述进气通路中的主燃料喷射阀,以及配置在所述节流阀的所述进气通路内的辅助燃料喷射阀 阀门和进气歧管的上游,用于根据发动机的运行状况控制燃料供应控制系统。 当发动机温度低于预定值时,由主燃料喷射阀供给燃料,当发动机温度高于预定值并且节流阀的开度较小时,由辅助燃料喷射阀供给燃料 根据表示发动机的运转状况的规定的参数,即在节气门下游的位置处的进气通路内的压力来调节施加到主燃料喷射阀和辅助燃料喷射阀两者的燃料压力 阀,并且预定参数也用于控制主燃料喷射阀和辅助燃料喷射阀的各自的基本燃料喷射周期。
    • 5. 发明授权
    • Fail-safe device for temperature sensors
    • 温度传感器故障安全装置
    • US5003954A
    • 1991-04-02
    • US411397
    • 1989-09-22
    • Masahiko YakuwaTomofumi ItohHisashi Igarashi
    • Masahiko YakuwaTomofumi ItohHisashi Igarashi
    • G01K7/00F02D41/06F02D41/22F02D45/00G01K7/24
    • F02D41/222F02D41/067Y02T10/40
    • A fail-safe device for an engine temperature sensor. A value of the engine temperature detected by the engine temperature sensor is renewed and stored for engine control. While the engine is detected to be in a low temperature region lower than a predetermined value on the basis of the detected value, renewal of the detected value is inhibited when it has decreased. It is determined that the detected value has decreased, when the detected value is lower than a lower limit value. The lower limit value is set to a value corresponding to the detected value when the engine is detected to be in the low temperature region, whereas it is set to the predetermined value when the engine is detected not to be in the low temperature region. Renewal of the detected value is inhibited when the detected value has not remained within a predetermined range over a predetermined time period.
    • 用于发动机温度传感器的故障安全装置。 由发动机温度传感器检测到的发动机温度的值被更新并存储用于发动机控制。 当基于检测值检测到发动机处于低于预定值的低温区域时,当检测值减小时,检测值的更新被禁止。 当检测值低于下限值时,确定检测值已经减小。 当检测到发动机处于低温区域时,将下限值设定为与检测值相对应的值,而在检测到发动机不在低温区域时将其设定为规定值。 当检测值在预定时间段内未保持在预定范围内时,检测值的更新被禁止。
    • 6. 发明授权
    • Exhaust gas component concentration sensing device and method of
detecting failure thereof
    • 废气成分浓度检测装置及其故障检测方法
    • US4951632A
    • 1990-08-28
    • US341635
    • 1989-04-21
    • Masahiko YakuwaTomohiko KawanabeHisashi IgarashiHiroshi Ohno
    • Masahiko YakuwaTomohiko KawanabeHisashi IgarashiHiroshi Ohno
    • F02D41/14G01N27/406G01N27/417G01N33/00
    • F02D41/1495G01N27/4175
    • A method of detecting failure of an exhaust gas component concentration sensor for detecting concentration of a component of exhaust gases from an internal combustion engine. The method comprises the steps of: (1) applying a predetermined voltage to the sensor, (2) determining whether or not a change in an output voltage from the sensor caused by the application of the predetermined voltage to the sensor is smaller than a predetermined value, and (3) deciding that the sensor is faulty when the change in the output voltage is smaller than the predetermined value. A device for sensing concentration of a component of exhaust gases from an internal combustion engine comprising an electric resistance member connected in series between an electric current supply source and one of a pair of electrodes provided on a solid electrolytic element. A device for detecting failure of an exhaust gas component concentration sensing device comprising a constant voltage supply source for applying a predetermined voltage to the sensing device, and a switch connected between the constant voltage supply source and one of a pair of electrodes provided on an electrolytic element of the sensing device, for applying the predetermined voltage to the one of the electrodes when the switch is closed.
    • 一种检测排气组分浓度传感器的故障的方法,用于检测来自内燃机的废气的分量的浓度。 该方法包括以下步骤:(1)向传感器施加预定电压,(2)确定由传感器施加预定电压引起的传感器输出电压的变化是否小于预定电压 值,以及(3)当输出电压的变化小于预定值时,确定传感器故障。 一种用于感测来自内燃机的排气组分浓度的装置,包括串联连接在电流源和设置在固体电解元件上的一对电极中的一个电极之间的电阻构件。 一种用于检测排气组分浓度检测装置的故障的装置,包括用于向感测装置施加预定电压的恒定电压源,以及连接在恒定电压源和设置在电解质上的一对电极中的一个电极之间的开关 元件,用于当开关闭合时将预定电压施加到电极中的一个。
    • 7. 发明授权
    • Ignition timing control method for internal combustion engines
    • 内燃机点火正时控制方法
    • US4702211A
    • 1987-10-27
    • US819502
    • 1986-01-15
    • Akira KatoHisashi IgarashiTadashi Umeda
    • Akira KatoHisashi IgarashiTadashi Umeda
    • F02P5/15F02P5/14
    • F02P5/1508Y02T10/46
    • An ignition timing control method for an internal combustion engine, which controls the ignition timing, on the basis of a basic ignition timing value determined as a function of operating parameters of the engine. When a detected parameter value indicative of engine temperature is lower than a predetermined value, a correction variable for the basic ignition timing value is determined based upon detected parameter values indicative of engine temperature and engine load magnitude, to correct the basic ignition timing value thereby. Ignition of the mixture is effected at a timing according to the corrected basic ignition timing value. Preferably, when detected engine rotational speed is lower than a predetermined value lower than the engine idling speed or when it is higher than a predetermined high rotational speed value, the correction of the basic ignition timing value by the correction variable is prohibited.
    • 基于作为发动机的运转参数确定的基本点火正时值的内燃机的点火正时控制方法,其控制点火正时。 当检测到的指示发动机温度的参数值低于预定值时,基于检测到的指示发动机温度和发动机负载大小的参数值来确定基本点火正时值的校正变量,从而校正基本点火正时值。 在根据校正的基本点火正时值的定时进行混合物的点火。 优选地,当检测到的发动机转速低于低于发动机空转速度的预定值时,或者当其高于预定的高转速值时,禁止基准点火正时值由校正变量的校正。
    • 10. 发明授权
    • Device for detecting abnormality of fuel supply system of internal
combustion engines
    • 用于检测内燃机燃料供应系统异常的装置
    • US5579747A
    • 1996-12-03
    • US550098
    • 1995-10-30
    • Ryuji SatoKojiro TsutsumiHisashi IgarashiSachito Fujimoto
    • Ryuji SatoKojiro TsutsumiHisashi IgarashiSachito Fujimoto
    • F02D41/00F02D41/02F02D41/22F02M25/08
    • F02M25/0809F02D41/0037F02D41/221
    • A device for detecting abnormality of the fuel supply system of an internal combustion engine inhibits supply of evaporative fuel to the intake passage when the air-fuel ratio correction coefficient becomes smaller than a predetermined value, and thereafter determines that the fuel supply system is normal when the air-fuel ratio correction coefficient increases above the predetermined value as a result of the inhibition of the supply of the evaporative fuel. The supply of the evaporative fuel to the intake passage is resumed after the determination that the fuel supply system is normal has been made. Determination of abnormality of the fuel supply system is inhibited after resuming of the supply of the evaporative fuel until the engine enters a predetermined operating condition in which the air-fuel ratio correction coefficient has increased. The determination of abnormality of the fuel supply system is permitted to be resumed, based on the air-fuel ratio correction coefficient when the engine has entered the predetermined operating condition.
    • 一种用于检测内燃机的燃料供应系统的异常的装置,当空燃比校正系数变得小于预定值时,禁止向进气通道供应蒸发燃料,然后确定燃料供应系统正常 由于抑制了蒸发燃料的供给,空燃比校正系数增加到高于预定值。 在确定燃料供应系统正常之后,继续向进气通道供应蒸发燃料。 在继续供应蒸发燃料直到发动机进入空燃比校正系数增加的预定操作状态之后,禁止确定燃料供应系统的异常。 基于当发动机已经进入预定操作状态时的空燃比校正系数,允许确定燃料供给系统的异常。