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    • 1. 发明授权
    • Apparatus for maintaining multilevel cache hierarchy coherency in a
multiprocessor computer system
    • 用于在多处理器计算机系统中维持多级高速缓存层级一致性的装置
    • US5715428A
    • 1998-02-03
    • US639719
    • 1996-04-29
    • Wen-Hann WangKonrad K. LaiGurbir SinghMichael W. RhodehamelNitin V. SarangdharJohn M. BauerMandar S. JoshiAshwani K. Gupta
    • Wen-Hann WangKonrad K. LaiGurbir SinghMichael W. RhodehamelNitin V. SarangdharJohn M. BauerMandar S. JoshiAshwani K. Gupta
    • G06F12/08G06F13/00
    • G06F12/0831G06F12/0811
    • A computer system comprising a plurality of caching agents with a cache hierarchy, the caching agents sharing memory across a system bus and issuing memory access requests in accordance with a protocol wherein a line of a cache has a present state comprising one of a plurality of line states. The plurality of line states includes a modified (M) state, wherein a line of a first caching agent in M state has data which is more recent than any other copy in the system; an exclusive (E) state, wherein a line in E state in a first caching agent is the only one of the agents in the system which has a copy of the data in a line of the cache, the first caching agent modifying the data in the cache line independent of other said agents coupled to the system bus; a shared (S) state, wherein a line in S state indicates that more than one of the agents has a copy of the data in the line; and an invalid (I) state indicating that the line does not exist in the cache. A read or a write to a line in I state results in a cache miss. The present invention associates states with lines and defines rules governing state transitions. State transitions depend on both processor generated activities and activities by other bus agents, including other processors. Data consistency is guaranteed in systems having multiple levels of cache and shared memory and/or multiple active agents, such that no agent ever reads stale data and actions are serialized as needed.
    • 一种计算机系统,包括具有高速缓存层级的多个高速缓存代理,所述高速缓存代理器通过系统总线共享存储器并根据协议发出存储器访问请求,其中高速缓存行具有包括多条线路之一的当前状态 状态。 多个行状态包括修改的(M)状态,其中M状态的第一高速缓存代理的行具有比系统中的任何其他副本更新的数据; 排除(E)状态,其中第一高速缓存代理中的E状态中的线是系统中唯一具有高速缓存行中的数据的副本的代理,第一高速缓存代理将数据修改为 所述高速缓存行独立于耦合到所述系统总线的其它所述代理; 共享(S)状态,其中S状态的行指示多于一个代理具有该行中的数据的副本; 和指示该行不存在于缓存中的无效(I)状态。 对I状态的行进行读取或写入会导致高速缓存未命中。 本发明将状态与线相关联并且定义了管理状态转换的规则。 状态转换取决于处理器生成的活动和其他总线代理(包括其他处理器)的活动。 在具有多级缓存和共享内存和/或多个活动代理的系统中保证数据一致性,使得任何代理程序都不会读取过时的数据,并且操作根据需要进行序列化。
    • 2. 发明申请
    • FUEL EFFICIENT ULTRA-LOW EMISSION AND IMPROVED PATTERN FACTOR COLORLESS DISTRIBUTED COMBUSTION FOR STATIONARY AND PROPULSION GAS TURBINE APPLICATIONS
    • 燃油有效超低排放和改进的图案因子无级分布式燃烧用于定位和推进气体涡轮应用
    • US20110023492A1
    • 2011-02-03
    • US12686742
    • 2010-01-13
    • Ashwani K. Gupta
    • Ashwani K. Gupta
    • F02C7/22
    • F23R3/20F02C7/22F23C9/006F23C2900/99001Y02E20/342Y02T50/671
    • Colorless distributed combustion (CDC) reactors or green combustion gas turbine combustors having a combustion chamber are presented for improved performance of gas turbine combustion engines. The combustors are configured and designed for providing a superior pattern factor (uniform thermal field in the combustion zone) and a reduction or complete elimination of pollutants emission from the combustor (i.e., zero emission gas turbine combustor) and uniform thermal field in the entire combustion zone to provide significantly improved pattern factor. Colorless distributed combustion is achieved with fuel and air entering the combustion chamber via one or more injection ports as non-premixed, or premixed. Rectangular, cylindrical, stadium and elliptical shaped combustors are presented with injection ports and exit ports located in various locations of the combustors. The mixture preparation between fuel and air with the hot combustion products is carried out either with the gases present in the combustion chamber or via a communication link between the exit gases from the combustor back to the combustion chamber.
    • 提出了具有燃烧室的无色分散燃烧(CDC)反应器或绿色燃烧燃气涡轮燃烧器,以改善燃气轮机内燃机的性能。 燃烧器被配置和设计用于提供优异的模式因子(燃烧区域中的均匀热场)和减少或完全消除来自燃烧器(即,零排放燃气轮机燃烧器)的污染物排放和整个燃烧中的均匀热场 区域提供显着改善的模式因子。 无油分布式燃烧是通过燃料和空气通过一个或多个喷射口进入燃烧室而实现的,如非预混合或预混合。 矩形,圆柱形,体育场和椭圆形燃烧器都带有位于燃烧器各处的注射口和出口。 燃料和空气与热燃烧产物之间的混合物制备可以通过存在于燃烧室中的气体或通过来自燃烧器的出口气体到燃烧室之间的连通连接进行。
    • 5. 发明授权
    • Method and system for recovering sulfur in the thermal stage of a Claus reactor
    • 在克劳斯反应器的热级中回收硫的方法和系统
    • US08449860B2
    • 2013-05-28
    • US13127364
    • 2009-10-30
    • Ashwani K. Gupta
    • Ashwani K. Gupta
    • B01D53/76C01B17/04
    • B01D53/52B01D2251/102C01B17/0413C01B17/0417Y02P20/129
    • Method and system are presented for the combustion of hydrogen sulfide mixed with other gases for simultaneous recovery of sulfur and energy from hydrogen sulfide at higher efficiency. The amounts and velocity of the hydrogen sulfide into the reactor is selected in such a way that it is not possible to burn the hydrogen sulfide in a normal thin reaction zone during its combustion. The injected hydrogen sulfide gas is mixed in a thermal reactor with fresh air and hot active combustion gases in the reactor on account of internal jet pump effect and self-induced entrainment. The reaction is exothermic so that the chemical energy present in hydrogen sulfide is recovered together with the sulfur. Various reactors are shown capable of controlling the formation of a thermal distribution flow pattern based on the position, and position and direction (and other factors) regarding fluid introduction within a combustion chamber of the reactors.
    • 提出了与其他气体混合的硫化氢燃烧方法和系统,以更高效率同时从硫化氢中回收硫和能量。 选择硫化氢进入反应器的量和速度,使得在其燃烧期间不可能在正常的薄反应区中燃烧硫化氢。 注入的硫化氢气体在热反应器中与新鲜空气和热活性燃烧气体在反应器中混合,这是由于内部喷射泵效应和自身引发的夹带。 反应是放热的,因此存在于硫化氢中的化学能与硫一起回收。 示出了能够基于位于反应器的燃烧室内的流体引入的位置以及位置和方向(和其它因素)来控制形成热分布流动模式的各种反应器。
    • 6. 发明授权
    • Fuel efficient ultra-low emission and improved pattern factor colorless distributed combustion for stationary and propulsion gas turbine applications
    • 燃料效率超低排放和改进的模式因子无级分布式燃烧用于固定和推进燃气轮机应用
    • US08695350B2
    • 2014-04-15
    • US12686742
    • 2010-01-13
    • Ashwani K. Gupta
    • Ashwani K. Gupta
    • F02C3/34
    • F23R3/20F02C7/22F23C9/006F23C2900/99001Y02E20/342Y02T50/671
    • Colorless distributed combustion (CDC) reactors or green combustion gas turbine combustors having a combustion chamber are presented for improved performance of gas turbine combustion engines. The combustors are configured and designed for providing a superior pattern factor (uniform thermal field in the combustion zone) and a reduction or complete elimination of pollutants emission from the combustor (i.e., zero emission gas turbine combustor) and uniform thermal field in the entire combustion zone to provide significantly improved pattern factor. Colorless distributed combustion is achieved with fuel and air entering the combustion chamber via one or more injection ports as non-premixed, or premixed. Rectangular, cylindrical, stadium and elliptical shaped combustors are presented with injection ports and exit ports located in various locations of the combustors. The mixture preparation between fuel and air with the hot combustion products is carried out either with the gases present in the combustion chamber or via a communication link between the exit gases from the combustor back to the combustion chamber.
    • 提出了具有燃烧室的无色分散燃烧(CDC)反应器或绿色燃烧燃气涡轮燃烧器,以改善燃气轮机内燃机的性能。 燃烧器被配置和设计用于提供优异的模式因子(燃烧区域中的均匀热场)和减少或完全消除来自燃烧器(即,零排放燃气轮机燃烧器)的污染物排放和整个燃烧中的均匀热场 区域提供显着改善的模式因子。 无油分布式燃烧是通过燃料和空气通过一个或多个喷射口进入燃烧室而实现的,如非预混合或预混合。 矩形,圆柱形,体育场和椭圆形燃烧器都带有位于燃烧器各处的注射口和出口。 燃料和空气与热燃烧产物之间的混合物制备可以通过存在于燃烧室中的气体或通过来自燃烧器的出口气体到燃烧室之间的连通连接进行。