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    • 1. 发明申请
    • LAMINATED CERAMIC CAPACITOR
    • 层压陶瓷电容器
    • US20100188797A1
    • 2010-07-29
    • US12670855
    • 2007-11-29
    • Youichi YamazakiHideyuki OsuzuYoshihiro FujiokaDaisuke Fukuda
    • Youichi YamazakiHideyuki OsuzuYoshihiro FujiokaDaisuke Fukuda
    • H01G4/12
    • H01G4/1227H01G4/30
    • A crystal constituting a dielectric porcelain, comprised of a first crystal group composed of crystal grains of 0.2 atomic % or less calcium concentration and a second crystal group composed of crystal grains of 0.4 atomic % or more calcium concentration, wherein the ratio of concentration of each of magnesium and a first rare earth element contained in a center portion to that contained in a surface layer portion of crystal grains constituting the first crystal group is greater than the corresponding concentration ratio of crystal grains constituting the second crystal group, and wherein on a polished surface resulting from polishing of the surface of the dielectric porcelain, when the area of crystal grains of the first crystal group is referred to as a and the area of crystal grains of the second crystal group referred to as b, the ratio of b/(a+b) is in the range of 0.5 to 0.8.
    • 构成电介质瓷的晶体,由由0.2质量%以下钙浓度的晶粒构成的第一晶体组和由钙浓度为0.4原子%以上的晶粒构成的第二晶体组成,其中, 的镁和包含在构成第一晶体组的晶粒的表层部分中的部分的中心部分的第一稀土元素大于构成第二晶体基团的晶粒的相应浓度比,并且其中在抛光 当第一晶体组的晶粒的面积被称为a,第二晶体组织的晶粒面积被称为b时,由电介质陶瓷的表面的抛光产生的表面,b /( a + b)在0.5〜0.8的范围内。
    • 2. 发明授权
    • Laminated ceramic capacitor
    • 层压陶瓷电容器
    • US08208240B2
    • 2012-06-26
    • US12670855
    • 2007-11-29
    • Youichi YamazakiHideyuki OsuzuYoshihiro FujiokaDaisuke Fukuda
    • Youichi YamazakiHideyuki OsuzuYoshihiro FujiokaDaisuke Fukuda
    • H01G4/12C04B35/468
    • H01G4/1227H01G4/30
    • A crystal constituting a dielectric porcelain, comprised of a first crystal group composed of crystal grains of 0.2 atomic % or less calcium concentration and a second crystal group composed of crystal grains of 0.4 atomic % or more calcium concentration, wherein the ratio of concentration of each of magnesium and a first rare earth element contained in a center portion to that contained in a surface layer portion of crystal grains constituting the first crystal group is greater than the corresponding concentration ratio of crystal grains constituting the second crystal group, and wherein on a polished surface resulting from polishing of the surface of the dielectric porcelain, when the area of crystal grains of the first crystal group is referred to as a and the area of crystal grains of the second crystal group referred to as b, the ratio of b/(a+b) is in the range of 0.5 to 0.8.
    • 构成电介质瓷的晶体,由由0.2质量%以下钙浓度的晶粒构成的第一晶体组和由钙浓度为0.4原子%以上的晶粒构成的第二晶体组成,其中, 的镁和包含在构成第一晶体组的晶粒的表层部分中的部分的中心部分的第一稀土元素大于构成第二晶体基团的晶粒的相应浓度比,并且其中在抛光 当第一晶体组的晶粒的面积被称为a,第二晶体组织的晶粒面积被称为b时,由电介质陶瓷的表面的抛光产生的表面,b /( a + b)在0.5〜0.8的范围内。
    • 3. 发明申请
    • MULTILAYERED CERAMIC CAPACITOR
    • 多层陶瓷电容器
    • US20100067171A1
    • 2010-03-18
    • US12516797
    • 2007-11-29
    • Youichi YamazakiHideyuki OsuzuYoshihiro FujiokaDaisuke Fukuda
    • Youichi YamazakiHideyuki OsuzuYoshihiro FujiokaDaisuke Fukuda
    • H01G4/06
    • H01G4/1227C04B35/4682C04B2235/3203C04B2235/3208C04B2235/3215C04B2235/3224C04B2235/3225C04B2235/3239C04B2235/3262C04B2235/3418C04B2235/36C04B2235/663C04B2235/785C04B2235/79C04B2235/85H01G4/30
    • [Problems] To provide a multilayered ceramic capacitor which in a high-temperature loading test, can be inhibited from decreasing in insulation resistance with time and which can have high insulating properties even when produced without via a reoxidation step.[Means for Solving Problems] The multilayered ceramic capacitor is formed by alternately superposing dielectric layers made of dielectric porcelain and inner-electrode layers. The dielectric porcelain is constituted of first crystals comprising crystal particles comprising barium titanate as the main component and having a calcium concentration of 0.2 at. % or lower and second crystals comprising crystal particles having a calcium concentration of 0.4 at. % or higher. The ratios (C2/C1) between the concentrations (C1) of magnesium and rare earth elements in a surface layer of the crystal particles constituting the first crystals and the concentrations (C2) of magnesium and the rare earth elements in a central part of the crystal particles (9a) constituting the first crystals are higher than the corresponding concentration ratios (C4/C3) in the crystal particles (9b) constituting the second crystals. When the areal proportion of the crystal particles of the first crystals and that of the crystal particles of the second crystals are expressed by a and b, respectively, then b/(a+b) is 0.5-0.8.
    • [问题]提供一种多层陶瓷电容器,其在高温负载试验中可以抑制绝缘电阻随时间的降低,即使在不经由再氧化步骤的情况下也可以具有高绝缘性。 解决问题的手段多层陶瓷电容器通过交替叠加由电介质瓷和内电极层构成的电介质层而形成。 电介质陶瓷由包含钛酸钡作为主要成分并且钙浓度为0.2at。的晶体颗粒的第一晶体构成。 %或更低的第二晶体包含钙浓度为0.4at。的晶体颗粒。 % 或更高。 构成第一晶体的结晶粒子的表面层中的镁和稀土元素的浓度(C1)与镁和稀土元素在中心部分的浓度(C2)之间的比(C2 / C1) 构成第一晶体的结晶粒子(9a)高于构成第二晶体的结晶粒子(9b)中的相应的浓度比(C4 / C3)。 当第一晶体的晶体颗粒和第二晶体的晶体颗粒的面积比例分别由a和b表示时,b /(a + b)为0.5-0.8。
    • 7. 发明授权
    • Diesel engine and fuel injection nozzle therefor
    • 柴油发动机和燃油喷嘴
    • US07895986B2
    • 2011-03-01
    • US12190463
    • 2008-08-12
    • Daisuke ShimoMasahiko FujimotoMotoshi KataokaSangkyu KimDaisuke Fukuda
    • Daisuke ShimoMasahiko FujimotoMotoshi KataokaSangkyu KimDaisuke Fukuda
    • F02B23/02
    • F02M61/1806F02M45/086
    • A fuel injection nozzle for a diesel engine. The fuel injection nozzle may include a plurality of injection hole groups, each having two injection holes respectively. A distance between the two injection holes, an angle between longitudinal axes of the two injection holes and an angle between horizontal axes of said two injection holes of each injection hole group are each set such that fuel sprays injected from said two injection holes will form a single fuel spray cloud after the fuel sprays collide with a side wall of a combustion chamber formed in a top surface of a piston of the engine, and such that the distance between collision points of the fuel sprays will be in a predetermined range in which a penetration force of said fuel spray cloud along a longitudinal direction of said combustion chamber received after collision with said wall of said combustion chamber is at or near a predetermined maximum value.
    • 一种用于柴油发动机的燃油喷嘴。 燃料喷射喷嘴可以包括分别具有两个喷射孔的多个喷射孔组。 两个喷射孔之间的距离,两个喷射孔的纵轴之间的角度和每个喷射孔组的所述两个喷射孔的水平轴线之间的角度分别被设定为使得从所述两个喷射孔注入的燃料喷射将形成 燃料喷雾与形成在发动机的活塞的顶面中的燃烧室的侧壁碰撞的单燃料喷雾云,并且燃料喷射的碰撞点之间的距离将处于预定范围内,其中 所述燃料喷雾云沿与所述燃烧室的所述壁碰撞之后接收的所述燃烧室的纵向方向的穿透力处于或接近预定的最大值。