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    • 3. 发明申请
    • Nitrided mo alloy worked material having high corrosion resistance, high strength and high toughness and method for production thereof
    • 具有高耐腐蚀性,高强度和高韧性的氮化钼合金加工材料及其制造方法
    • US20060054247A1
    • 2006-03-16
    • US10509156
    • 2003-03-27
    • Jun TakadaMasahiro NagaeMakoto NakanishiTomohiro Takida
    • Jun TakadaMasahiro NagaeMakoto NakanishiTomohiro Takida
    • C23C8/24
    • C22C27/04C23C8/02C23C8/24C23C26/00
    • The present invention provides an innovative material which has properties which cannot be achieved with conventional materials, i.e., having satisfactory high corrosion resistance and high strength in very severe corrosive conditions, for example, a 75% sulfuric acid (H2SO4) aqueous solution (180° C.) in addition to high strength at high temperatures and high toughness at low temperatures, and provides a method for effectively manufacturing the innovative material. A worked molybdenum-alloy material, subjected to nitriding, which has high corrosion resistance, high strength, and high toughness, includes fine nitride particles formed by subjecting a nitride-forming-metal element dissolved to form a solid solution in an untreated worked molybdenum-alloy material to internal nitriding, the fine nitride particles being dispersed inside the worked molybdenum-alloy material subjected to nitriding; and a molybdenum nitride layer formed by subjecting a worked structure or a recovered structure at the surface of the untreated worked molybdenum-alloy material to external nitriding, the molybdenum nitride layer being provided at the surface of the worked molybdenum-alloy material subjected to nitriding. A method for manufacturing a worked molybdenum-alloy material subjected to nitriding includes the steps of subjecting an untreated worked alloy material in which at least any one of titanium, zirconium, hafnium, vanadium, niobium, and tantalum is dissolved to form a solid solution to multi-step internal nitriding treatment including a stepwise increase of the treatment temperature, and then subjecting the worked alloy material to external nitriding treatment.
    • 本发明提供了一种创新材料,其具有用常规材料不能实现的性质,即在非常严重的腐蚀条件下具有令人满意的高耐腐蚀性和高强度,例如75%的硫酸(H 2) 除了在高温下的高强度和低温下的高韧性之外,还提供了一种有效地制造创新材料的方法。 具有高耐腐蚀性,高强度和高韧性的经过氮化处理的钼合金材料包括通过将溶解形成固溶体的氮化物形成金属元素在未处理的加工的钼 - 合金材料进行内部氮化,氮化物微粒分散在经受氮化的加工的钼合金材料内; 以及通过在未经处理的加工的钼合金材料的表面处理加工结构或回收结构进行外部氮化而形成的氮化钼层,所述氮化钼层设置在经受氮化的加工的钼合金材料的表面。 制造经过氮化处理的钼合金材料的方法包括以下步骤:使其中溶解有钛,锆,铪,钒,铌和钽中的至少一种的未处理的加工合金材料形成固溶体 包括逐步增加处理温度的多步内部氮化处理,然后对加工的合金材料进行外部氮化处理。
    • 4. 发明授权
    • Variable-nozzle type turbo charger
    • 可变喷嘴式涡轮增压器
    • US5996347A
    • 1999-12-07
    • US903382
    • 1997-07-30
    • Masahiro NagaeKouichi AkitaHisashi Ohki
    • Masahiro NagaeKouichi AkitaHisashi Ohki
    • F02B37/12F02B37/18F02B37/24F02D23/02F02D41/06
    • F02D41/068F02B37/18F02B37/24F02D41/064F02D23/02F02D41/061F05B2220/40Y02T10/144
    • A variable-nozzle type turbo charger capable of temporarily decreasing the back pressure of the engine at the start of the engine. The turbo charger is equipped with a plurality of nozzle vanes of which the opening degree can be changed and are capable of changing the areas of turbine nozzles at the time when exhaust gases of an engine are guided from said turbine nozzles formed among said nozzle vanes to a turbine rotor, wherein an actuator that adjusts the opening degree of the nozzle vanes is so controlled that the areas of the turbine nozzles are larger than a minimum area for a predetermined period of time from the start of the engine, and, after the passage of said predetermined period of time, said actuator is so controlled that the areas of said turbine nozzles become the minimum area to promote the warming-up of the engine when the water temperature of the engine or the engine load is smaller than a predetermined value.
    • 一种可变喷嘴型涡轮增压器,其能够在发动机起动时暂时降低发动机的背压。 涡轮增压器配备有多个喷嘴叶片,其开口程度可以改变,并且能够改变当发动机的废气从所述喷嘴叶片之间形成的所述涡轮喷嘴引导到发动机的排气时的涡轮喷嘴的面积到 涡轮转子,其中调节喷嘴叶片的开度的致动器受到如此控制,使得涡轮喷嘴的面积大于从发动机起始一段预定时间段的最小面积,并且在通过后 在所述预定时间段内,所述致动器被如此控制,使得当发动机或发动机负载的水温小于预定值时,所述涡轮喷嘴的面积变成最小面积,以促进发动机的预热。
    • 7. 发明申请
    • EGR SYSTEM FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING THE SAME
    • 用于内燃机的EGR系统及其控制方法
    • US20100000500A1
    • 2010-01-07
    • US12440668
    • 2007-09-27
    • Hajime ShimizuMasahiro NagaeHiroyuki Haga
    • Hajime ShimizuMasahiro NagaeHiroyuki Haga
    • F02B47/08F02B33/44F01N9/00
    • F02D41/0065F02B29/0406F02D9/04F02D41/005F02D2200/1015F02M26/05F02M26/06F02M26/15F02M26/24F02M26/28F02M26/38Y02T10/47
    • An EGR system includes a high-pressure EGR passage that provides communication between an exhaust pipe, at a portion upstream of a turbine of a turbocharger, and an intake pipe, at a portion downstream of a compressor; a low-pressure EGR passage that provides communication between the exhaust pipe, at a portion downstream of the turbine, and the intake passage, at a portion upstream of the compressor; and an exhaust gas catalyst provided upstream of a position at which the low-pressure EGR passage is connected to the exhaust pipe. When an internal combustion engine is in the transitional state from the low-load operating state to the high-load operating state (S303), if incomplete combustion is detected in the internal combustion engine (S304) and the bed temperature of the exhaust gas catalyst is lower than the reference temperature (S305), the high-pressure EGR gas amount is made larger than the prescribed high-pressure EGR gas amount determined based on the operating state of the internal combustion engine (S306). Thus, an excessive decrease in the intake air temperature is suppressed, and therefore occurrence of incomplete combustion is suppressed.
    • EGR系统包括高压EGR通道,其在压缩机的下游部分处提供在涡轮增压器的涡轮机上游的排气管与进气管之间的连通; 低压EGR通道,其在所述压缩机的上游部分处,在所述涡轮机下游的所述排气管与所述进气通道之间提供连通; 以及设置在低压EGR通路与排气管连接的位置上游的废气催化剂。 当内燃机处于从低负载运行状态到高负载运转状态的过渡状态(S303)时,如果在内燃机中检测到不完全燃烧(S304)和排气催化剂的床温度 低于基准温度(S305),使高压EGR气体量比基于内燃机的运转状态确定的规定的高压EGR气体量大(S306)。 因此,能够抑制进气温度的过度降低,抑制不完全燃烧的发生。