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    • 1. 发明授权
    • Self-diagnosis apparatus and method for fuel evaporative emission
    • 用于燃料蒸发排放的自诊断装置和方法
    • US5419299A
    • 1995-05-30
    • US159510
    • 1993-11-30
    • Osamu FukasawaHisashi Iida
    • Osamu FukasawaHisashi Iida
    • F02B77/08F02M25/08G01M15/04F02M33/02
    • F02M25/0809
    • A self-diagnosis apparatus and method for use in a fuel evaporative emission control system for a vehicle having an internal combustion engine. A space part of a fuel tank is coupled with an intake air passage via a vapor passage. Fuel vapors from the fuel tank pass through the vapor passage. A canister is provided in the vapor passage to absorb the fuel vapors from the fuel tank. The internal pressure of the space part of the fuel tank is detected by a pressure detecting unit. The quantity of change in the internal pressure during the lapse of a certain time period is calculated by a calculating unit. The internal pressure change quantity is compared with a predetermined reference value, and thus abnormality is judged by a judgement unit in accordance with the comparison result.
    • 一种用于具有内燃机的车辆的燃料蒸发排放控制系统中的自诊断装置和方法。 燃料箱的空间部分经由蒸气通道与进气通道联接。 来自燃油箱的燃料蒸汽通过蒸气通道。 在蒸气通道中设置有一个罐,以从燃料箱中吸收燃料蒸汽。 燃料箱的空间部分的内部压力由压力检测单元检测。 通过计算单位计算经过一定时间段的内部压力的变化量。 将内部压力变化量与规定的基准值进行比较,由判断单元根据比较结果来判定异常。
    • 2. 发明授权
    • Air-fuel ratio control apparatus of internal combustion engine
    • 内燃机空燃比控制装置
    • US5400761A
    • 1995-03-28
    • US166993
    • 1993-12-16
    • Osamu FukasawaJunya MorikawaHisashi Iida
    • Osamu FukasawaJunya MorikawaHisashi Iida
    • F02D41/00F02D41/14F02D45/00F02M25/08F02M51/00
    • F02D41/0045F02D41/2445F02D41/2454F02D41/0042
    • An air-fuel ratio control apparatus of an internal combustion engine capable of learning and controlling an air-fuel ratio accurately both in idling and non-idling without being affected by concentration of evaporated fuel. Uniform deviation of an air-fuel ratio is detected before starting purging of the evaporated fuel (steps S133 to S137), air-fuel ratio learning values KGI.sub.0 to KGI.sub.7 and KGS.sub.0 to KGS.sub.7 are stored respectively so that the uniform deviation shows a predetermined value or lower both at idling time and at non-idling time (steps S138 to S142), and air-fuel learning values KG.sub.0 to KG.sub.7 in respective areas including idling are updated or renewed with a value obtained by leveling or averaging air-fuel ratio learning values KGI.sub.0 to KGI.sub.7 and KGS.sub.0 to KGS.sub.7 stored both at idling time and at non-idling time (step S145). Thereafter, purging of the evaporated fuel is started, and area learning of the air-fuel ratio is also executed by air-fuel ratio learning values KG.sub.0 to KG.sub.7 in respective areas.
    • 内燃机的空燃比控制装置能够在不受蒸发燃料浓度的影响的情况下,在空转和非空转时都能够精确地学习和控制空燃比。 在开始吹扫蒸发燃料之前检测空燃比的均匀偏差(步骤S133至S137),分别存储空燃比学习值KGI0至KGI7和KGS0至KGS7,使得均匀偏差显示预定值或 在空转时间和非空转时间下降(步骤S138〜S142),并且通过将空燃比学习值进行调平或平均而获得的值来更新或更新包括怠速的各个区域中的空燃比学习值KG0〜KG7 KGI0至KGI7和KGS0至KGS7都在空闲时间和非空闲时间存储(步骤S145)。 此后,开始吹扫蒸发的燃料,并且还通过各个区域中的空燃比学习值KG0至KG7来执行空燃比的区域学习。
    • 9. 发明授权
    • Air-fuel ratio control system for internal combustion engine
    • 内燃机空燃比控制系统
    • US5730111A
    • 1998-03-24
    • US664840
    • 1996-06-17
    • Yasumasa KajiYoshiyuki OkamotoHisashi Iida
    • Yasumasa KajiYoshiyuki OkamotoHisashi Iida
    • F02D45/00F02D41/00F02D41/14F02D41/34
    • F02D41/008F02D41/1441F02D41/1474F02D41/1456
    • An air-fuel ratio control system for an internal combustion engine includes an air-fuel ratio sensor provided at a collecting portion of an exhaust manifold. The air-fuel ratio sensor monitors an exhaust gas and changes its output in a linear fashion relative to an air-fuel ratio represented by the exhaust gas. The air-fuel ratio sensor is arranged at a position such that, after the number of strokes, corresponding to a multiple of the number of all cylinders, from a fuel injection for each cylinder, the air-fuel ratio sensor can measure an air-fuel ratio caused by the corresponding fuel injection. The system stores a target fuel amount for each of the cylinders. The system derives a feedback correction value depending on a deviation between a fuel amount introduced into the corresponding cylinder, which is derived based on the air-fuel ratio monitored by the air-fuel ratio sensor, and the stored number-of-stroke prior target fuel amount.
    • 用于内燃机的空燃比控制系统包括设置在排气歧管的收集部分处的空燃比传感器。 空燃比传感器监测排气并相对于由废气表示的空燃比以线性方式改变其输出。 空燃比传感器配置在这样的位置,使得在从每个气缸的燃料喷射开始的行程次数对应于所有气缸数的倍数之后,空燃比传感器可以测量空气 - 由相应的燃料喷射引起的燃料比。 系统存储每个气缸的目标燃料量。 该系统根据由空燃比传感器监视的空燃比导出的相应气缸中引入的燃料量与存储的行程数之前目标值之间的偏差,得出反馈校正值 燃料量。