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1、EHS-200 消聲量Noise Attenuation注 1: Lp1i 是安裝 EHS-200前柴油機(jī)聲壓頻譜,數(shù)據(jù)源自。Lp2i 是安裝 EHS-200 消聲器后柴油機(jī)聲壓頻譜,Lp2i = Lp1i - D i , 裝配在不同柴油機(jī)上測(cè)得的 A 計(jì)權(quán)消聲量可能不同。Note 1:Lp1i from diesel brand sound prere level before EHS-200 Silencer installed, which provided from the Laboratory. Lp2i fromdiesel brand sound prere level afte

2、r EHS-200 Silencer installed. A-weighted Noise Attenuation maybe different when different diesel installed頻率Frequency (Hz)506380100125160200250315柴油機(jī)聲壓級(jí) Sound prere level Lp1i1(dB)125.1118.8123.6124.5124.3124.0120.8121.8119.8EHS-200 消聲量Noise attenuationD i(dB)6.012.214.122.627.828.529.730.935.5柴油機(jī)聲壓

3、級(jí)Sound Prere Level Lp2i1(dB)119.1106.6109.5101.996.595.591.190.984.3頻率Frequency (Hz)4005006308001k1.25k1.6k2k2.5k柴油機(jī)聲壓級(jí) Sound Prere Level Lp1i1(dB)117.9116.8115.4114.1114.2112.6112.0110.7108.4EHS-200 消聲量Noise AttenuationD i(dB)38.838.438.846.142.443.845.755.353.2柴油機(jī)聲壓級(jí)Sound Prere Level Lp2i1(dB)79.1

4、78.476.668.071.868.866.355.455.2頻率Frequency (Hz)3.15k4k5k6.3k8k10kA 聲級(jí)A SoundPrere LevelA 計(jì)權(quán)消聲量A-weighted Noise Attenuation柴油機(jī)聲壓級(jí) Sound prere level Lp1i1(dB)106.7105.6104.6103.5101.9100.3124.3NAEHS-200 消聲量Noise attenuationD i(dB)48.343.943.042.338.329.5NA30.6柴油機(jī)聲壓級(jí)Sound prere level Lp2i1(dB)58.461.7

5、61.661.263.670.893.7NAEHS-400 消聲量Noise Attenuation注 2: Lp1i 是安裝 EHS-400前柴油機(jī)聲壓頻譜,數(shù)據(jù)源自。Lp2i 是安裝 EHS-400 消聲器后柴油機(jī)聲壓頻譜,Lp2i = Lp1i - D i , 裝配在不同柴油機(jī)上測(cè)得的 A 計(jì)權(quán)消聲量可能不同。Note 2:Lp1i from diesel brand sound prere level before EHS-400 Silencer installed, which provided from the Laboratory. Lp2i fromdiesel brand

6、sound prere level after EHS-400 Silencer installed. A-weighted Noise Attenuation maybe different when different diesel installed頻率Frequency (Hz)506380100125160200250315柴油機(jī)聲壓級(jí) Sound prere level Lp1i2(dB)125.1118.8123.6124.5124.3124.0120.8121.8119.8EHS-400 消聲量Noise attenuationD i(dB)10.319.122.927.230

7、.031.032.134.138.1柴油機(jī)聲壓級(jí)Sound Prere Level Lp2i2(dB)114.899.7100.797.394.393.088.787.781.7頻率Frequency (Hz)4005006308001k1.25k1.6k2k2.5k柴油機(jī)聲壓級(jí) Sound Prere Level Lp1i1(dB)117.9116.8115.4114.1114.2112.6112.0110.7108.4EHS-400 消聲量Noise AttenuationD i(dB)36.634.433.033.538.948.151.550.351.7柴油機(jī)聲壓級(jí)Sound Prer

8、e Level Lp2i2(dB)81.382.482.480.675.364.560.560.456.7頻率Frequency (Hz)3.15k4k5k6.3k8k10kA 聲級(jí)A SoundPrere LevelA 計(jì)權(quán)消聲量A-weighted Noise Attenuation柴油機(jī)聲壓級(jí) Sound prere level Lp1i2(dB)106.7105.6104.6103.5101.9100.3124.3NAEHS-400 消聲量Noise attenuationD i(dB)45.745.244.441.139.137.2NA33.7柴油機(jī)聲壓級(jí)Sound prere le

9、vel Lp2i2(dB)61.060.460.262.462.863.190.6NA火星熄滅器性能Particulars注 3:計(jì)算工況: 氣溫=300C ,氣流速度 35m/sNote 3:Calculation condition: Air temperature = 300C, Airspeed=35m/s注 4:試驗(yàn)用活性炭顆粒符合SAE J997-2013 中 3.2 粗顆粒和細(xì)顆粒的相關(guān)要求Noet 4: The test baron granular is in accordance with coarse carbon and fine carbon submitted with 3.2 of SAE J997-2013型 號(hào)M試驗(yàn)溫度 Testing Temp. (C)試驗(yàn)氣流速度 Testing Airspeed (m/s)實(shí)測(cè)壓力損失 Prere Loss (Pa)標(biāo)稱壓力損失3Nominal Press.Loss(Pa)火星捕集效率 Spark Collection Effici

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