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    • 1. 发明授权
    • Engine mixture control system controlling primary and secondary air-fuel
mixtures
    • 发动机混合控制系统控制一级和二级空气 - 燃料混合物
    • US4385491A
    • 1983-05-31
    • US221889
    • 1980-12-31
    • Kazuhiro SakuraiHiroshi SawadaKyo Hattori
    • Kazuhiro SakuraiHiroshi SawadaKyo Hattori
    • F01N3/22F02D37/00F02D41/14F02D43/00F02M7/24
    • F01N3/222F01N3/22F02D37/00F02D41/1482F02D41/1491F02M7/24
    • An internal combustion engine includes an intake system, an exhaust system, and a mixture supply device which supplies primary fuel-air mixture into the intake system. An oxygen sensor assembly detects oxygen concentration at a certain point in the exhaust system and produces a first electrical signal which represents this concentration. A secondary air flow control circuit receives this first electrical signal and produces a second electrical signal according thereto. A secondary air supply system feeds secondary air into the exhaust system upstream of the aforementioned certain point at a flow rate controlled by the second electrical signal. A primary air/fuel ratio correction circuit receives either the first or the second electrical signal and based on it produces a primary mixture control electrical signal. This primary mixture control electrical signal is received by a mixture control system, which alters the primary air/fuel ratio of the mixture provided by the mixture supply device in accordance therewith.
    • 内燃机包括进气系统,排气系统和将主要燃料 - 空气混合物供应到进气系统中的混合供应装置。 氧传感器组件检测排气系统中某一点处的氧气浓度,并产生表示该浓度的第一电信号。 第二气流控制电路接收该第一电信号并根据其产生第二电信号。 二次空气供给系统以由第二电信号控制的流量将二次空气供给到上述特定点的上游的排气系统。 主空气/燃料比校正电路接收第一或第二电信号,并且基于它产生主混合控制电信号。 该混合控制电信号被混合物控制系统接收,混合物控制系统改变由混合物供应装置提供的混合物的一次空气/燃料比。
    • 4. 发明授权
    • Inter-cylinder air-fuel ratio imbalance determination apparatus for internal combustion engine
    • 用于内燃机的缸内空燃比不平衡确定装置
    • US08560208B2
    • 2013-10-15
    • US13505849
    • 2009-11-05
    • Hiroshi MiyamotoYasushi IwazakiHiroshi Sawada
    • Hiroshi MiyamotoYasushi IwazakiHiroshi Sawada
    • B60T7/12
    • F02D41/0085F02D41/0065F02D41/1454Y02T10/47
    • An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, as an “EGR supplying state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt of a detected air-fuel ratio abyfs represented by an output value of an air-fuel ratio sensor when an EGR gas is being supplied, and obtains, as an “EGR stop state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt when an EGR gas supply is being stopped. The determination apparatus obtains an “EGR-causing imbalance determination parameter Pegr” by subtracting the EGR stop state imbalance determination parameter Poff from the EGR supplying state imbalance determination parameter Pon, and determines that an inter-cylinder air-fuel ratio imbalance state has occurred due to the supply of the EGR gas when the parameter Pegr is larger than a threshold Pegrth.
    • 根据本发明的气缸内空燃比不平衡判定装置(判定装置),作为“EGR供给状态不平衡判定参数”,获得与检测到的空气 - 燃料比不平衡判定装置的差分值d(abyfs)dt对应的值, 在EGR气体供给时由空燃比传感器的输出值表示的燃料比abyfs,作为“EGR停止状态不平衡判定参数”,获得与差分值d(abyfs)dt对应的值 正在停止EGR气体供应。 确定装置通过从EGR供应状态不平衡确定参数Pon中减去EGR停止状态不平衡确定参数Poff而获得“EGR导致不平衡确定参数Pegr”,并且确定缸间空燃比不平衡状态已经发生 当参数Pegr大于阈值Pegrth时,供应EGR气体。
    • 8. 发明授权
    • Mechanical seal sliding member, and mechanical seal
    • 机械密封滑动件,机械密封
    • US08360436B2
    • 2013-01-29
    • US12812033
    • 2009-01-06
    • Yoshihiro TeshimaHiroshi Sawada
    • Yoshihiro TeshimaHiroshi Sawada
    • F16J15/34
    • F16J15/3424
    • The present invention provides a mechanical seal sliding member with high lubricating characteristics, in which the coefficient of friction and the temperature of sliding surfaces are lowered and stabilized without excessive leakage. In the mechanical seal sliding member of the present invention, on the sliding surface 2, a plurality of grating sections 5 are formed separately in each of which a plurality of linear shape ridge portions parallel to each other are formed in a predetermined region with a predetermined pitch. The linear shape ridge portions of the plurality of grating sections are formed as inclined at a predetermined angle to a sliding direction of the sliding surfaces 2. Such periodic structure can improve the lubricating characteristics for lubrication. By irradiating a linearly polarized femtosecond laser with irradiating energy adjacent to a process threshold level to a material surface, a fine periodic structure with a cycle interval comparable with a laser wavelength and with a ridge depth half or less than the laser wavelength can be formed by a self-structuring manner.
    • 本发明提供一种具有高润滑特性的机械密封滑动构件,其中摩擦系数和滑动面的温度降低并稳定而没有过多的泄漏。 在本发明的机械密封滑动部件中,在滑动面2上分别形成多个光栅部5,每个光栅部5分别形成有规定区域的多个直线状的脊状部, 沥青。 多个格栅部的直线形状的脊部形成为与滑动面2的滑动方向成预定角度倾斜。这种周期性结构可以提高润滑的润滑特性。 通过用材料表面照射具有与过程阈值水平相邻的能量的线性偏振飞秒激光,可以通过与激光波长相当的周期间隔和具有与激光波长一半或更小的脊深度的精细周期性结构来形成微小的周期性结构, 一种自我组织的方式。