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    • 2. 发明授权
    • Misfire detection method based on a change in crankshaft rotation
    • 基于曲轴旋转变化的失火检测方法
    • US5506778A
    • 1996-04-09
    • US157160
    • 1994-02-03
    • Takuya MatsumotoToru HashimotoMitsuhiro MiyakeYasuhisa YoshidaMitsuhiko YanagisawaHiroyuki NakajimaKoichi Namiki
    • Takuya MatsumotoToru HashimotoMitsuhiro MiyakeYasuhisa YoshidaMitsuhiko YanagisawaHiroyuki NakajimaKoichi Namiki
    • F02D41/14G01M15/11F01L25/00
    • G01M15/11F02D41/1498F02D2200/1015
    • A misfire detection method is provided, which method makes it possible to accurately detect the occurrence/absence of misfire by eliminating a detection error in misfire detection. This error is caused by a vibrational increase or decrease of the rotational changing rate of a crankshaft after a misfire state occurs. A processor, which receives pulse outputs from a crank angle sensor, calculates in sequence angular accelerations D.omega..sub.n-2, D.omega..sub.n-1, D.omega..sub.n, and D.omega..sub.n+1 in crank angle areas which correspond to a preceding cylinder, two cylinders checked for misfire, and a succeeding cylinder, respectively. If the values D.omega..sub.n-1 and D.omega..sub.n n significantly decrease in comparison with the values D.omega..sub.n-2 and D.omega..sub.n-1, respectively, then it is tentatively determined that misfire has occurred in both cylinders checked. Then If the value D.omega..sub.n+1 significantly increases compared to the value D.omega..sub.n, then the restoration to the normal combustion state is confirmed, and the occurrence of misfire in the two cylinders checked is definitely determined.
    • PCT No.PCT / JP93 / 00766 Sec。 371日期:1994年2月3日 102(e)1994年2月3日PCT PCT 1993年6月8日PCT公布。 出版物WO93 / 25811 PCT 日期:1993年12月23日。提供了一种失火检测方法,该方法使得能够通过消除失火检测中的检测误差来准确地检测失火的发生/不存在。 该误差是由发生失火状态后曲轴的旋转变化率的振动增加或减小引起的。 接收来自曲柄角传感器的脉冲输出的处理器根据先前的圆柱体的曲轴角度区域中的角加速度D omega n-2,D omega n-1,D omega n和D omega n + ,两个气瓶分别检查失火,和一个后续的气缸。 如果值D omega n-1和D omega n n分别与值Dωn-2和Dωn-1相比显着降低,则暂时确定在检查的两个气缸中都发生失火。 那么如果值D omega n + 1与值D omega n相比显着增加,则确认到正常燃烧状态的恢复,并且确定了检查的两个气缸中失火的发生。
    • 6. 发明授权
    • Percussive tool
    • 打击乐器
    • US4819542A
    • 1989-04-11
    • US124780
    • 1987-08-21
    • Petr Y. FadeevVladimir Y. FadeevVladeen V. KorobkovRim A. KulaginNikolai P. Ermilov
    • Petr Y. FadeevVladimir Y. FadeevVladeen V. KorobkovRim A. KulaginNikolai P. Ermilov
    • B25D9/04B25D9/12B25D9/14B25D9/20E21B1/26E21B1/30F01B25/04F01L15/00F01L25/00
    • E21C3/24B25D9/12B25D9/145B25D9/20B25D2209/007
    • A percussive tool comprising a housing (1) accommodating a movable striker (2) and connected with a power cylinder (6) in which is arranged a striker shank (4) with a gripping mechanism (14) and a drive in the form of a hydraulic cylinder (8). The percussive tool is provided with a control unit having a spool valve means (18) to control a distribution means (19). The spool valve means (18) has a casing (22) and a spool (23) taking two positions in the casing and defining two chambers (25, 26) interconnected through a throttling means (24). One chamber (25) constantly communicates with a discharge line (21), and the other chamber (26) is periodically put in communication with the space of the hydraulic cylinder (8). The spool (23) is spring-loaded with respect to the casing (22) on the side of one chamber (25) and takes in this case its first position.
    • PCT No.PCT / SU85 / 00101 Sec。 371日期1987年8月21日 102(e)日期1987年8月21日PCT 1985年12月23日PCT PCT。 第WO87 / 03925号公报 日本1987年7月2日。一种冲击工具,其包括容纳可动撞钉(2)并与动力缸(6)连接的壳体(1),其中设置有具有夹持机构(14)的撞针(4)和 液压缸(8)形式的驱动装置。 冲击工具设置有具有用于控制分配装置(19)的滑阀装置(18)的控制单元。 滑阀装置(18)具有壳体(22)和阀芯(23),其在壳体中具有两个位置并且限定通过节流装置(24)互连的两个腔室(25,26)。 一个室(25)与排放管(21)不断连通,另一个室(26)周期性地与液压缸(8)的空间连通。 卷轴(23)在一个室(25)侧相对于壳体(22)弹簧加载,并且在这种情况下将其卷入第一位置。
    • 7. 发明授权
    • Process and apparatus for preventing NO.sub.x emissions after emergency
shutdowns of plants for the manufacture of nitric acid
    • 用于制造硝酸的植物紧急关闭后防止NOx排放的方法和装置
    • US4330520A
    • 1982-05-18
    • US217541
    • 1980-12-17
    • Gunter Roller
    • Gunter Roller
    • C01B21/40C01B21/26F01L25/00
    • C01B21/26
    • The process and apparatus described seeks to prevent NO.sub.x emissions after an emergency shutdown in a process for manufacturing nitric acid by catalytic combustion of ammonia, compression of the nitrous combustion gases and subsequent absorption. Immediately on shutdown the intake nitrous gas supply to the compressor is interrupted, the residual intake side nitrous gases are conveyed to the delivery side, the delivery side gas volume is shut off, the gas on the delivery side is expanded to the intake side and then exhausted into a vacuum system. Subsequently the acid charged with NO.sub.x in the absorption stages is drawn off, degassed acid is circulated through the absorption stages until equilibrium is established, the pressure of the shutoff section is released and cooled acid is admitted to the absorption stages.
    • 所描述的方法和设备旨在在通过氨的催化燃烧,氮气燃烧气体的压缩和随后的吸收在用于制造硝酸的过程中的紧急关闭之后防止NOx排放。 在停机时立即停止向压缩机供给的进气氮气,残留的进气侧亚硝气被输送到出口侧,输送侧气体体积被切断,输送侧的气体膨胀到进气侧 用尽真空系统。 随后,吸收阶段中装有NO x的酸被排出,脱气的酸循环通过吸收级,直到建立平衡,释放部分的压力被释放并且冷却的酸被允许进入吸收阶段。
    • 8. 发明授权
    • Impact tools or apparatus
    • 冲击工具或装置
    • US3800664A
    • 1974-04-02
    • US3800664D
    • 1972-01-18
    • DOBSON PARK IND
    • PHILLIPS R
    • B25D9/12B25D9/14E21B1/26E21C37/22E21C37/24F01L25/00
    • E21C37/22B25D9/12B25D9/145Y10S173/04
    • The invention is for an impact tool comprising a pressure fluid operating piston and cylinder device in which pressure fluid, for the cyclic operation of said device, is controlled by control means responsive to changes in fluid pressure brought about by relative reciprocatory movement between the piston and cylinder. In one preferred embodiment of the invention said control means comprises a valve means for controlling the supply of pressure fluid to the cylinder, for the retraction of the piston, and for controlling the exhausting of said pressure fluid from the cylinder, for the advance of the piston, a chamber or chambers connected to the cylinder so that a fluid therein will be subjected to pressure changes by movement of the piston, and means responsive to pressures in said chamber or chambers and operative cyclicly to switch said valve means between a pressure fluid supply position and a pressure fluid exhaust position. Conveniently said chamber or chambers is or are connected to the cylinder so that the fluid in said chamber or chambers will be compressed by retraction of the piston. The pressure fluid, for the operation of the tool, may be a liquid and the fluid in the chamber or chambers, which is compressible, may be a gas. Alternatively the pressure fluid, for the operation of the tool, may be a compressible liquid and the fluid in the chamber or chambers a similar compressible liquid.
    • 本发明涉及一种冲击工具,其包括压力流体操作活塞和气缸装置,其中用于所述装置的循环操作的压力流体由控制装置控制,所述控制装置响应于通过活塞和活塞之间的相对往复运动而产生的流体压力的变化 圆筒。 在本发明的一个优选实施例中,所述控制装置包括用于控制向气缸供应压力流体的阀装置,用于使活塞缩回并用于控制所述压力流体从气缸的排出, 活塞,连接到气缸的腔室或腔室,使得其中的流体将通过活塞的运动而受到压力变化,以及响应于所述腔室或腔室中的压力并且循环地操作以在压力流体供应器 位置和压力​​流体排放位置。 方便地,所述室或室连接到气缸,使得所述室或室中的流体将通过活塞的缩回而被压缩。 用于工具操作的压力流体可以是液体,并且可压缩的腔室中的流体可以是气体。 或者,用于操作工具的压力流体可以是可压缩液体,并且腔室中的流体或类似的可压缩液体。