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    • 2. 发明授权
    • Internal combustion engine
    • 内燃机
    • US08418669B2
    • 2013-04-16
    • US13024815
    • 2011-02-10
    • Goichi KatayamaYoshihiro FujiyoshiYutaka TajimaShoichi Yamamoto
    • Goichi KatayamaYoshihiro FujiyoshiYutaka TajimaShoichi Yamamoto
    • F02B75/06
    • F02B67/06F16F15/265
    • In an internal combustion engine having a pair of balancer shafts (53, 54), an engine torque is transmitted from a crank gear (28) to an oil pump gear (74) on a drive shaft (73) of an oil pump (71) via a first idler gear (84) and the first balancer shaft gear (64). The engine torque is also transmitted to a fuel pump (72) from the crank gear to a fuel pump gear (78) via the first idler gear and a second idler gear (86), and to the second balancer shaft gear (67) via the first idler gear and second idler gear. Alternatively, the engine torque may be transmitted to the fuel pump from the crank gear to the fuel pump gear via the first idler gear, second balancer shaft gear and second idler gear. As the oil pump gear is actuated by the crank gear via the first idler gear, the oil pump gear is not subjected to the loading caused by the balancer shaft, and hence can be made of a compact and light-weight gear. Furthermore, this allows the various gears to be arranged in an efficient (in terms of the overall weight for the given mechanical strength requirements) and compact manner.
    • 在具有一对平衡轴(53,54)的内燃机中,发动机转矩从油泵(71)的驱动轴(73)从曲轴(28)传递到油泵齿轮(74) )通过第一空转齿轮(84)和第一平衡轴轴齿轮(64)。 发动机转矩也经由第一空转齿轮和第二空转齿轮(86)从曲柄齿轮传递到燃料泵(72)到燃料泵齿轮(78),并经由第二空转轴齿轮(86)经由 第一个空转齿轮和第二空转齿轮。 或者,发动机扭矩可以经由第一空转齿轮,第二平衡器轴齿轮和第二空转齿轮从曲柄齿轮传递到燃料泵。 当油泵齿轮由曲柄齿轮通过第一空转齿轮致动时,油泵齿轮不会受到由平衡轴引起的负载,因此可以由紧凑且重量轻的齿轮制成。 此外,这允许各种齿轮以有效的(在给定机械强度要求的总重量方面)和紧凑的方式布置。
    • 4. 发明授权
    • Direct fuel injection diesel engine
    • 直接燃油喷射柴油机
    • US07861685B2
    • 2011-01-04
    • US12307215
    • 2007-06-07
    • Hiroshi SonoNobuhiko SasakiTatsuya UchimotoKenichiro IkeyaYutaka TajimaMitsuhiro ShibataYukihisa Yamaya
    • Hiroshi SonoNobuhiko SasakiTatsuya UchimotoKenichiro IkeyaYutaka TajimaMitsuhiro ShibataYukihisa Yamaya
    • F02F3/24
    • F02B23/0696F02B1/08F02B3/06F02B23/0621F02B23/0651F02B23/0657F02B23/0669F02B2275/14F02B2275/40F02F2001/241Y02T10/123Y02T10/125
    • In a direct fuel injection diesel engine equipped with a pentroof-shaped piston, a collision angle (α) at which fuel injected in a direction in which the height of the top face of a piston (13) is high collides with a cavity (25) is set larger than a collision angle (β) at which fuel injected in a direction in which the height of the top face of the piston (13) is low collides with the cavity (25). By so doing, in a direction in which the height of the top face is high fuel that has collided with the cavity (25) easily rebounds upward, thus achieving effective combustion by mixing with a large amount of air present in the vicinity of the opening of the cavity (25) where the height is high, and in a direction in which the height of the top face is low it is difficult for fuel that has collided with the cavity (25) to rebound upward, thus achieving effective combustion by suppressing the flowing out of fuel or flame from the opening of the cavity (25) where the height is low, thereby appropriately mixing fuel and air in all directions in the circumferential direction of the cavity and making it possible to improve the engine output and reduce harmful exhaust substances.
    • 在配备有五角柱形活塞的直接燃料喷射柴油发动机中,在活塞(13)的顶面高度与空腔(25)碰撞的方向上喷射的燃料的碰撞角(α) )被设定为大于在活塞(13)的顶面的高度低的方向上喷射的燃料与空腔(25)碰撞的碰撞角(& bgr)。 通过这样做,在顶面的高度与空腔(25)碰撞的高度高的方向上容易地向上弹回,从而通过与存在于​​开口附近的大量空气混合而实现有效的燃烧 在高度高的空腔(25)中,并且在顶面高度低的方向上,与空腔(25)碰撞的燃料难以向上回弹,从而通过抑制来实现有效的燃烧 从高度低的空腔(25)的开口流出燃料或火焰,从而在空腔的圆周方向上适当地混合燃料和空气在各个方向上,并且可以改善发动机的输出并减少有害的 排气物质。
    • 5. 发明申请
    • DIRECT FUEL INJECTION DIESEL ENGINE
    • 直接燃油喷射柴油发动机
    • US20090314253A1
    • 2009-12-24
    • US12307215
    • 2007-06-07
    • Hiroshi SonoNobuhiko SasakiTatsuya UchimotoKenichiro IkeyaYutaka TajimaMitsuhiro ShibataYukihisa Yamaya
    • Hiroshi SonoNobuhiko SasakiTatsuya UchimotoKenichiro IkeyaYutaka TajimaMitsuhiro ShibataYukihisa Yamaya
    • F02B3/00F02F3/00
    • F02B23/0696F02B1/08F02B3/06F02B23/0621F02B23/0651F02B23/0657F02B23/0669F02B2275/14F02B2275/40F02F2001/241Y02T10/123Y02T10/125
    • In a direct fuel injection diesel engine equipped with a pentroof-shaped piston, a collision angle (α) at which fuel injected in a direction in which the height of the top face of a piston (13) is high collides with a cavity (25) is set larger than a collision angle (β) at which fuel injected in a direction in which the height of the top face of the piston (13) is low collides with the cavity (25). By so doing, in a direction in which the height of the top face is high fuel that has collided with the cavity (25) easily rebounds upward, thus achieving effective combustion by mixing with a large amount of air present in the vicinity of the opening of the cavity (25) where the height is high, and in a direction in which the height of the top face is low it is difficult for fuel that has collided with the cavity (25) to rebound upward, thus achieving effective combustion by suppressing the flowing out of fuel or flame from the opening of the cavity (25) where the height is low, thereby appropriately mixing fuel and air in all directions in the circumferential direction of the cavity and making it possible to improve the engine output and reduce harmful exhaust substances.
    • 在配备有五角形活塞的直接燃料喷射柴油发动机中,在活塞(13)的顶面的高度高的方向上喷射的燃料与空腔(25)碰撞的碰撞角(α) )设定为大于在活塞(13)的顶面的高度低的方向上喷射的燃料与空腔(25)碰撞的碰撞角(β)。 通过这样做,在顶面的高度与空腔(25)碰撞的高度高的方向上容易地向上弹回,从而通过与存在于​​开口附近的大量空气混合而实现有效的燃烧 在高度高的空腔(25)中,并且在顶面高度低的方向上,与空腔(25)碰撞的燃料难以向上回弹,从而通过抑制来实现有效的燃烧 从高度低的空腔(25)的开口流出燃料或火焰,从而在空腔的圆周方向上适当地混合燃料和空气在各个方向上,并且可以改善发动机的输出并减少有害的 排气物质。
    • 7. 发明授权
    • Silicon carbide epitaxial wafer and manufacturing method therefor
    • 碳化硅外延片及其制造方法
    • US08823015B2
    • 2014-09-02
    • US13392348
    • 2010-08-25
    • Kenji MomoseYutaka TajimaYasuyuki SakaguchiMichiya OdawaraYoshihiko Miyasaka
    • Kenji MomoseYutaka TajimaYasuyuki SakaguchiMichiya OdawaraYoshihiko Miyasaka
    • H01L29/161H01L21/20
    • H01L29/0684C30B25/20C30B29/36H01L21/02378H01L21/02433H01L21/02529H01L21/02587H01L21/0262H01L21/02658H01L29/1608
    • Provided is a silicon carbide epitaxial wafer, the entire surface of which is free of step bunching. Also provided is a method for manufacturing said silicon carbide epitaxial wafer. The provided method for manufacturing a silicon carbide semiconductor device includes: a step wherein a 4H—SiC single-crystal substrate having an off-axis angle of 5° or less is polished until the lattice disorder layer on the surface of the substrate is 3 nm or less; a step wherein, in a hydrogen atmosphere, the polished substrate is brought to a temperature between 1400° C. and 1600° C. and the surface of the substrate is cleaned; a step wherein silicon carbide is epitaxially grown on the surface of the cleaned substrate as the amounts of SiH4 gas and C3H8 gas considered necessary for epitaxially growing silicon carbide are supplied simultaneously at a carbon-to-silicon concentration ratio between 0.7 and 1.2 to 1; and a step wherein the supply of SiH4 gas and the supply of C3H8 gas are cut off simultaneously, the substrate temperature is maintained until the SiH4 gas and the C3H8 gas are evacuated, and then the temperature is decreased.
    • 提供了一种碳化硅外延晶片,其整个表面没有步骤聚束。 还提供了制造所述碳化硅外延晶片的方法。 提供的制造碳化硅半导体器件的方法包括:抛光离轴角为5°或更小的4H-SiC单晶衬底,直到衬底表面上的晶格紊乱层为3nm 或更少; 在氢气氛中将抛光后的基板升温至1400℃〜1600℃,清洗基板表面的工序; 以0.7〜1.2:1的碳 - 硅浓度比同时供给认为外延生长碳化硅所必需的SiH 4气体和C 3 H 8气体的量,在清洗后的基板的表面上外延生长碳化硅的工序; 并且同时切断供给SiH 4气体和供给C 3 H 8气体的步骤,保持基板温度,直到SiH 4气体和C 3 H 8气体被抽真空,然后降低温度。