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    • 93. 发明授权
    • Cylinder head for use on a spark-ignition internal combustion engine and such spark-ignition internal combustion engine
    • 用于火花点火内燃机和这种火花点火内燃机的气缸盖
    • US06701883B2
    • 2004-03-09
    • US10391877
    • 2003-03-18
    • Takuya Matsumoto
    • Takuya Matsumoto
    • F02F100
    • F02F1/38
    • A cylinder head and a four-stroke and two-valve spark-ignition internal combustion engine spark-ignition internal combustion engine are provided which allows for enhancing the output and the rotational speed of the engine by increasing the flame propagation rate of the burning air-fuel mixture. As the piston 4 moves up toward the top dead center, the air-fuel mixture within the squish area 14 is inducted along the squish guide groove 15 toward the ignition electrode 7a of the ignition plug 7 and is then ignited by the ignition electrode 7a when the piston 4 approaches the top dead center. When the mixture is ignited by the ignition electrode 7a, there is a flow of the air-fuel mixture around the ignition electrode 7a (the ignition plug aperture 12) inducted by the squish guide groove 15 so as to move toward the center of the combustion chamber, so that the flame propagation rate within the combustion chamber may be enhanced as the ignition is effected on such moving air-fuel mixture.
    • 提供了一种气缸盖和四冲程和二气门火花点火式内燃机火花点火内燃机,其通过增加燃烧空气 - 燃烧器的火焰传播速率来提高发动机的输出和转速, 燃料混合物 当活塞4向上死点移动时,挤压区域14内的空气 - 燃料混合物沿着挤压导向槽15被引向火花塞7的点火电极7a,然后由点火电极7a点燃, 活塞4接近上止点。 当混合物被点火电极7a点燃时,由挤压导槽15引导的点火电极7a(火花塞孔12)周围的空气 - 燃料混合物流向燃烧中心 从而当这种移动的空气 - 燃料混合物发生点火时,可以提高燃烧室内的火焰传播速率。
    • 99. 发明授权
    • Apparatus for deterioration diagnosis of an exhaust purifying catalyst
    • 废气净化催化剂劣化诊断装置
    • US5732552A
    • 1998-03-31
    • US599314
    • 1996-02-09
    • Takuya MatsumotoToru HashimotoMitsuhiro MiyakeToshiro NomuraHidetsugu Kanao
    • Takuya MatsumotoToru HashimotoMitsuhiro MiyakeToshiro NomuraHidetsugu Kanao
    • F01N11/00F01N3/20
    • F01N11/007F01N2550/02F01N2900/0422Y02T10/22Y02T10/47
    • A deterioration diagnostic apparatus for a three-way catalyst includes an electronic control unit, which obtains a frequency of reversals of the changing direction in which the output of an upstream-side O.sub.2 sensor changes, based on the number of times the output voltage of the O.sub.2 sensor crosses a threshold. Also, the control unit obtains a frequency of reversals of the changing direction in which the output of a downstream-side O.sub.2 sensor changes, based on the number of times the output voltage of the downstream-side O.sub.2 sensor crosses upper and lower reversal reference values which are obtained by adding and subtracting a hysteresis constant to and from an average value of input values of the downstream-side O.sub.2 sensor output voltage. The control unit further obtains the ratio of the reversal frequency of the downstream-side sensor output to the reversal frequency of the upstream-side sensor output, and diagnoses deterioration of the three-way catalyst when the reversal frequency ratio has become greater than a predetermined value.
    • 用于三元催化剂的劣化诊断装置包括电子控制单元,其基于上游侧O2传感器的输出改变的次数获得上游侧O2传感器的输出变化的变化方向的反转频率 O2传感器超过阈值。 此外,控制单元根据下游侧O2传感器的输出电压与上下反转基准值相交的次数,得到下游侧O2传感器的输出变化的变化方向的反转频率 其通过向下游侧O2传感器输出电压的输入值的平均值加减去滞后常数而得到。 控制单元还获得下游侧传感器输出的反转频率与上游侧传感器输出的反转频率的比,并且当反转频率比已经变得大于预定频率比时,诊断三元催化剂的劣化 值。