Exhaust gas cleaning system for vehicle
    1.
    发明授权
    Exhaust gas cleaning system for vehicle 失效
    车辆废气净化系统

    公开(公告)号:US4665690A

    公开(公告)日:1987-05-19

    申请号:US817618

    申请日:1986-01-10

    摘要: An internal combustion engine is provided in its exhaust system with a particulate filter for trapping combustible particulates contained in exhaust gas. A combustion promoting material injection device is provided for injecting a material for promoting combustion of the combustible particulates into the exhaust system upstream of the particulate filter. Further there are provided a bypass exhaust passage which bypasses the combustion promoting material injection device and the particulate filter, and a flow control valve which controls the amount of exhaust gas flowing through the bypass exhaust passage to control the amount of exhaust gas flowing into the particulate filter when said combustion promoting material is to be injected from the injecting device. When the combustion promoting material is injected, the flow control valve controls the amount of exhaust gas flowing into the particulate filter so that the combustion promoting material can uniformly adhere to the surface of the combustible particulates over the entire area thereof and so that the combustion temperature of the combustible particulates is prevented from rising abnormally high.

    摘要翻译: 在其排气系统中设置有用于捕集废气中所含的可燃微粒的微粒过滤器的内燃机。 提供了一种燃烧促进材料注入装置,用于将可燃颗粒燃烧的材料注入到颗粒过滤器上游的排气系统中。 此外,还设置有绕过燃烧促进材料注入装置和微粒过滤器的旁通排气通道,以及流量控制阀,其控制流过旁路排气通道的废气量以控制流入颗粒物的废气量 当所述燃烧促进材料从注入装置注入时,过滤器。 当燃烧促进材料被注入时,流量控制阀控制流入微粒过滤器的废气量,使得促进燃烧材料能够在其整个区域上均匀地附着在可燃颗粒的表面上,从而燃烧温度 的可燃微粒被防止异常升高。

    Process for producing a peptide using a serine or thiol proteinase
    4.
    发明授权
    Process for producing a peptide using a serine or thiol proteinase 失效
    使用丝氨酸或硫醇蛋白酶生产肽的方法

    公开(公告)号:US4086136A

    公开(公告)日:1978-04-25

    申请号:US732543

    申请日:1976-10-14

    摘要: A peptide having the formulaX--A--B--Y--wherein A and B are the same or different and each represents an amino acid residue or a peptide residue, X represents an amino protective group, Y represents a carboxyl protective group selected from the group consisting of tertiary alkoxy, and benzyloxy, benzylamino and benzhydrylamino which can be substituted with an inert substituent, is prepared by a process which comprises reacting an amino acid or peptide having an N-terminal protective group, or a salt thereof of the formula:X--A--OHwith an amino acid or peptide having a C-terminal protective group or a salt thereof of the formula:H--B--Yin the presence of a thiol proteinase or serine proteinase enzyme in an aqueous solution having a pH sufficient to maintain the enzyme activity of said thiol proteinase or serine proteinase.

    摘要翻译: 一种具有式XABY的肽,其中A和B相同或不同,各自表示氨基酸残基或肽残基,X表示氨基保护基,Y表示选自叔烷氧基, 和可以被惰性取代基取代的苄氧基,苄氨基和二苯甲基氨基,是通过包括使具有下式的N-末端保护基的氨基酸或肽或其盐反应的方法制备的: