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    • 1. 发明授权
    • Ignition timing control system for internal combustion engine
    • 内燃机点火正时控制系统
    • US5390491A
    • 1995-02-21
    • US186157
    • 1994-01-25
    • Toshihiro SuzumuraYukihiro Yamashita
    • Toshihiro SuzumuraYukihiro Yamashita
    • F01N3/20F01N3/24F01N11/00F02D41/02F02P5/15
    • F01N11/007F02D41/0255F02P5/1506F01N2550/02F01N2900/0422Y02T10/26Y02T10/46Y02T10/47
    • An ignition timing control system for an internal combustion engine which can perform fast catalyst warm-up operation and prevent stalling at the restart of the internal combustion engine at a low temperature is disclosed. This control system judges whether the engine is in the start state or not, whether the cooling water temperature is lower than the specified temperature or not, and whether the intake air temperature is higher than the preset temperature or not. When these judgments are all affirmative, the system further judges whether the time after the start has reached the control starting time or not, and then whether the engine is in the idle operation state or not. When these judgments are both affirmative, the system sets the target ignition timing retard amount and the ignition timing gradual change time according to the intake air temperature, and then actually performs the ignition timing control according to the target retard amount and gradual retard time. Alternatively, the control system judges deterioration state of a catalyst and controls the ignition timing in dependence on the catalyst deterioration state and the intake air temperature.
    • 公开了一种用于内燃机的点火正时控制系统,其能够执行快速催化剂预热操作并且防止内燃机在低温重启时的停止。 该控制系统判断发动机是否处于开始状态,冷却水温度是否低于规定温度,以及进气温度是否高于预设温度。 当这些判断是肯定的时,系统进一步判断起动时间是否达到控制开始时间,然后判断发动机是否处于空转运转状态。 当这些判断是肯定的时,系统根据进气温度设定目标点火正时延迟量和点火正时逐渐变化时间,然后根据目标延迟量和逐渐延迟时间实际执行点火正时控制。 或者,控制系统判断催化剂的劣化状态,并根据催化剂劣化状态和进气温度来控制点火正时。
    • 3. 发明授权
    • Air-fuel ratio control system for internal combustion engine
    • 内燃机空燃比控制系统
    • US5570574A
    • 1996-11-05
    • US352208
    • 1994-12-02
    • Yukihiro YamashitaToshihiro Suzumura
    • Yukihiro YamashitaToshihiro Suzumura
    • F01N3/24F01N3/28F02B75/22F02D41/14
    • F02B75/22F02D41/1443
    • An air-fuel ratio control system for an internal combustion engine includes a pair of cylinder banks, a pair of exhaust passages connected to the cylinder banks, respectively, a common exhaust pipe where the exhaust passages join each other at their downstream ends, a pair of catalytic converters provided in the exhaust passages, respectively, a pair of main air-fuel ratio sensors provided in the exhaust passages upstream of the catalytic converters, respectively, a pair of auxiliary air-fuel ratio sensors provided in the exhaust passages downstream of the catalytic converters, respectively, and a catalytic converter provided in the common exhaust pipe. The system derives an air-fuel ratio feedback control correction value for each of the cylinder banks based on outputs of the auxiliary air-fuel ratio sensors. The system derives the air-fuel ratio feedback control correction values in such a manner as to control the outputs of the auxiliary air-fuel ratio sensors to be in antiphase with each other when the outputs of the auxiliary air-fuel ratio sensors are in phase with each other. This arrangement ensures effective purification of exhaust gases at the catalytic converter provided in the common exhaust pipe.
    • 一种用于内燃机的空燃比控制系统包括一对气缸组,分别连接到气缸组的一对排气通道,排气通道在其下游端彼此连接的公共排气管,一对 设置在排气通道中的催化转化器分别设置在催化转化器上游的排气通道中的一对主空气燃料比传感器,一对辅助空燃比传感器,设置在排气通道下游的排气通道中 催化转化器,以及设置在普通排气管中的催化转化器。 该系统基于辅助空燃比传感器的输出,得出每个气缸组的空燃比反馈控制校正值。 当辅助空燃比传感器的输出相位相同时,该系统以这样的方式获得空燃比反馈控制校正值,以便控制辅助空燃比传感器的输出反相 与彼此。 这种布置确保了在设置在公共排气管中的催化转化器上有效净化废气。
    • 4. 发明授权
    • Air-fuel ratio control apparatus for internal combustion engines
    • 用于内燃机的空燃比控制装置
    • US5445136A
    • 1995-08-29
    • US248951
    • 1994-05-25
    • Yukihiro YamashitaToshihiro Suzumura
    • Yukihiro YamashitaToshihiro Suzumura
    • F02D41/14
    • F02D41/1477F02D41/1401F02D41/1473F02D2041/1409F02D2041/1415F02D2041/142F02D2041/1426F02D2041/1433F02D41/1456
    • For stable air-fuel ratio control without hunting, an output condition of an air-fuel ratio sensor is monitored to decide whether or not a modern or advanced control using a dynamic model may be performed. The appropriateness of using the dynamic model may be determined by monitoring whether the output value of an air-fuel ratio sensor exists in a predetermined range or whether the air-fuel ratio sensor is maintained stably in an air-fuel ratio detectable state. When the sensor output condition is out of the predetermined range suitable for the modern control, an optimum feedback gain for performing the modern control is switched over to a lowered gain or the modern control is switched over into normal feedback control by proportional-and-integral control. By this control mode switch-over, most appropriate air-fuel ratio feedback control may be performed.
    • 为了在不进行狩猎的情况下进行稳定的空燃比控制,监视空燃比传感器的输出状态,以决定是否可以执行使用动态模型的现代或高级控制。 可以通过监视空燃比传感器的输出值是否存在于预定范围内,或者是否将空燃比传感器稳定地保持在空燃比可检测状态来确定使用动态模型的适当性。 当传感器输出条件超出适用于现代控制的预定范围时,用于执行现代控制的最佳反馈增益被切换到较低的增益,或者通过比例和积分将现代控制切换到正常的反馈控制 控制。 通过该控制模式切换,可以执行最合适的空燃比反馈控制。
    • 5. 发明授权
    • Non-volatile semiconductor memory device
    • 非易失性半导体存储器件
    • US08093645B2
    • 2012-01-10
    • US12715916
    • 2010-03-02
    • Yukihiro Yamashita
    • Yukihiro Yamashita
    • H01L29/76
    • H01L27/11565H01L27/11568Y10S257/907
    • A non-volatile semiconductor memory device includes a plurality of memory cell regions including a plurality of bit lines, a plurality of word lines intersecting the plurality of bit lines, and a first insulating film formed in a region between any two adjacent bit lines, a bit line contact region including bit line contacts connected to the plurality of bit lines, a first UV light shielding film covering at least a portion of the semiconductor substrate in the bit line contact region, an interlayer insulating film, and a second UV light shielding film covering the plurality of memory cell regions. The first UV light shielding film effectively reduces or blocks UV light generated during a fabrication step.
    • 非易失性半导体存储器件包括多个存储单元区域,包括多个位线,与多个位线相交的多个字线,以及形成在任意两个相邻位线之间的区域中的第一绝缘膜, 位线接触区域,包括连接到多个位线的位线触点,覆盖位线接触区域中的半导体衬底的至少一部分的第一UV光屏蔽膜,层间绝缘膜和第二UV光屏蔽膜 覆盖多个存储单元区域。 第一UV光屏蔽膜有效地减少或阻止在制造步骤期间产生的UV光。