JBT 5141-1991 小型汽油机排气消声器 设计参数

J93JB/T514119911991-06-261992-07-011130kW75mm2GB4759JB513733.1Dr3.1.1DrGB47593.1.2VmVhVm/Vh3.1.3JB51373.23.2.1ABCD3.2.211DdBAr%A105%B155%C207%D255%3.33.3.11991-06-26JB/T514119911992-07-016.1~6.4JB/T514119912175F–B–2175F6.271E40F–C–31E40F6.3133.3.2DdBAr%VmL44.14.21τ601nzf=1f1Hznr/minz=2=14.32)Sl(VSCf2100020h0p0+=π2f0HzCpcm/sVhLlcmS0cm255.1Vm3Vm=KzKKnKtV3VmVKzKz=3Z–1JB/T514119913KK=2K=1Kt22ABCDKt2~34~57~810~13Kn4Kn=0.7+10–4nb4nbr/min320%5.25.2.1LD033ABCDL/D03~55~105π204SD=5S25.2.26D=Lm–Lm6DdBLm=20lg|coskl1|+20lg|sinkl3|+20lgGLm=20lg|coskl|ll1l3k=λπ220lgG4JB/T514119914420lgG212sinlg20lg20klSS+2sinlg206lg20212klSS++2coslg204sinlg2012lg202212klklSS+++4sinlg2012lg20212klSS++m=S2/S120lgm55ABCDm6~99~129~156~155.2.3JB/T5141199155.366ABCD2~33~443~6ABC1~3D7max6nvLα=7nmaxr/minv450~550m/s5.45.4.1S1S1=1.2~1.5S0S1=S0S1=S0S05.4.277m/s50405.4.3JB/T5141199165~8mm5.4.48S3=10KVhKn8S3cm2VhlKK=2K=1KnKn=0.7+10–4nbnbr/min5.5)2(1000233m30SlVSCf+=π9f0HzCcm/sS3cm2l3cmVmL6526.1~6.46.1A1~51A–1JB/T5141199172A–23A–34A–45A–56.2B6~106B–17B–28B–3JB/T5141199189B–410B–56.3C11~1511C–112C–213C–314C–415C–5JB/T5141199196.4D16~1916D–117D–218D–319D–477.11~4dB5~9dB8~18dB7.2400~5007.3NJ/Z2—82JB/T51411991JB/T51411991*2100044*88012301/167/818,000199191991915002.000005