Engine Testing Instrumentation 发动机测试传感器安装.doc

Engine Testing Instrumentation 发动机测试传感器安装2010-11-28 05:11:24 View:99 Purpose目的Togiveanoverviewofminimumlevelofengineinstrumentationspecificationduringsteadystatecalibrationontestbedorvehiclebasedapplication总览在台架稳态标定过程或者整车应用过程中，Purpose目的To give an overview of minimum level of engine instrumentation specification during steady state calibration on testbed or vehicle based application总览在台架稳态标定过程或者整车应用过程中，发动机测试传感器最低规格安装规范Method方法Step1步骤1Temperature measurement温度测量Testcell based基于台架Intake air temperature/Entry to dirty air duct(before air filter)/1.5mm进气温度/进气未过滤前侧（在空滤前）/1.5mmInlet manifold air temperature/Intake manifold plenum/1.5mm进气歧管进气温度/进气歧管稳压腔/1.5mmExhaust manifold gas temperature/Level with exhaust manifold flange(in centre line of exhaust)/3mm排气歧管排气温度/与排气歧管法兰平齐（在排气歧管中心线上）/3mmCatalyst inlet gas temperature/10mm upstream of cat front face(in centre line of exhaust)/3mm催化器进口排气温度/在催化器上方10mm处（在排气管中心线上）/3mmCatalyst mid brick gas temperature/25mm downstream of cat front face(in centre line of exhaust)/1.5mm催化器内部排气温度/在催化器进口下方25mm处（在排气管中心线上）/1.5mmVehicle based基于整车Catalyst inlet gas temperature/25mm upstream of cat front face(in centre line of exhaust)/3mm催化器进口排气温度/在催化器上方25mm处（在排气管中心线上）/3mmCatalyst mid brick gas temperature/25mm downstream of cat front face(in centre line of exhaust)/1.5mm催化器内部排气温度/在催化器进口下方25mm处（在排气管中心线上）/1.5mmCatalyst inlet gas temperature/25mm upstream of cat end face(in centre line of exhaust)/1.5mm催化器出口排气温度/在催化器出口下方25mm处（在排气管中心线上）/1.5mmEngine oil sump temperature/Substitute a dipstick thermocouple in place of the engine oil dipstick发动机机油温度/移除机油尺，装上一个尺状热电偶Thermocouple sizing热电偶大小Due to time constant reason, maximum of 1.5mm size thermocouple should be used under transient application, but under constant high temperature cases and for robust concern, 3mm even 6mm ones should be used由于时间系数原因，在瞬态测试情况下，1.5mm大小的热电偶应该被使用。但是在持续高温和为了更好的可靠性原因，3mm甚至6mm大小的热电偶应该被使用Step2步骤2Pressure measurement压力测试Testcell based基于台架Barometric pressure/Testcell大气压力/台架试验室Inlet manifold pressure/Inlet manifold plenum进气歧管进气压力/进气歧管稳压腔Exhaust manifold pressure/Exhaust manifold flange排气歧管排气压力/排气歧管法兰处Vehicle based基于整车Pressure tappings for back pressure or boost pressure(Diesel)/In intake or exhaust/1/4 inch BSP tapping用于测量背压或增压压力（柴油）的压力传感器接头/在进气或者排气系统里/四分一英寸BSP接头Sample tapping CO2 for calculation of EGR(Diesel)/In intake or exhaust system/1/4 inch BSP tapping用于取样CO2以计算EGR率（柴油机）的取样接头/在进气或者排气系统里/四分一英寸BSP接头Step3步骤3Combustion measurement燃烧测试Cylinder pressure transducer should be fitted应安装缸压传感器Step4步骤4AFR measurement空燃比测量UEGO sensor should be fitted at a point where gas from each exhaust runners mixed well and which will not affect