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    • 3. 发明申请
    • SYSTEM FOR DETERMINING NUMBER OF PARTICLES
    • 用于确定颗粒数的系统
    • US20120090377A1
    • 2012-04-19
    • US13259018
    • 2010-04-02
    • Takashi MatsuyamaMasayoshi ShinoharaYoshinori OtsukiKaoru OkadaMasanobu Akita
    • Takashi MatsuyamaMasayoshi ShinoharaYoshinori OtsukiKaoru OkadaMasanobu Akita
    • G01M15/10
    • G01N1/2252G01N2001/2264G01N2015/0675
    • Provided is a system for determining a number of particles, which has a simplified and compact structure as well as a reduced cost. The system comprises a diluter (PND2) arranged at a connecting point of a main flow channel (ML) and a dilution gas flow channel (DL), a dilution gas flow rate control part (MFC3) that controls the flow rate of the dilution gas introduced into the diluter (PND2), a particle number measuring unit (2) that measures a number of solid particles in a diluted exhaust gas, a bypass flow channel (BL3) that bifurcates from between the diluter (PND2) and the particle number measuring unit (2) in the main flow channel (ML) and in which a constant flow rate unit (CFO3) is arranged, a suction pump (P) that is connected downstream of a converged point of the main flow channel (ML) and the bypass flow channel (BL3), and an information processing unit (4) that calculates the dilution factor of the exhaust gas based on a dilution gas flow rate (Q1) controlled by the dilution gas flow rate control part (MFC3), and a total of a unit flow rate (Q2) of the particle number measuring unit (2) and a set flow rate (Q3) of the constant flow rate unit (CFO3).
    • 提供了一种用于确定颗粒数量的系统,其具有简化且紧凑的结构以及降低的成本。 该系统包括布置在主流路(ML)和稀释气流通道(DL)的连接点处的稀释器(PND2),稀释气体流量控制部分(MFC3),其控制稀释气体的流量 引入到稀释器(PND2)中的粒子数测量单元(2),其测量稀释废气中的固体颗粒数量,从稀释剂(PND2)和测量颗粒数之间分叉的旁路流动通道(BL3) 主流通道(ML)中的单元(2),其中布置有恒流量单元(CFO3);吸入泵(P),其连接在主流路(ML)的汇聚点的下游, 旁路流路(BL3)以及基于由稀释气体流量控制部(MFC3)控制的稀释气体流量(Q1))计算废气的稀释系数的信息处理单元(4) 的粒子数测量单元(2)的单位流量(Q2)和设定流量 恒定流量单位(CFO3)的速率(Q3)。