种轻便的激光便携式排放测量系统（PEMS）用于车辆排放检测.pdf

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1、A COMPACT ULTRA-LIGHT LASER-BASED PORTABLE EMISSIONS MEASUREMENT SYSTEM(PEMS)PLATFORM FOR VEHICLE EMISSIONS MEASUREMENTSRitobrata SurIndrio Technologies Inc.BACKGROUNDEmissions certification from dynamometer testing paints an incomplete picturePORTABLE EMISSIONS MEASUREMENT SYSTEM(PEMS)Title 40/Chap

2、ter I/Subchapter U/Part 1065/Subpart JReal World Emissions Measurements Are NeededPROBLEM WITH CURRENT SOLUTIONS-PERFORMANCEA typical PEMS unithttps:/doi.org/10.1016/j.scitotenv.2019.136366ParameterTarget PEMS performance(CARB)Industry(PEMS)NOxLDL0.5 ppm1 ppmNH3LDL0.5 ppm10 ppmWeight 30 lbs6 lbsErro

3、r5HzIn-situ probe max temp:600CSensor controller box2 species per boxAny 2 species can be combined in 1 headTailpipeExhaust inExhaust outTESTS AT VEHICLE EMISSIONS RESEARCH LABORATORY(FORD)ZERO AMMONIA INTERFERENCEMORE LAB TEST RESULTS14:0014:3015:0015:3016:0016:3017:00TimeJul 26,2021 -5000500100015

4、00200025003000Species concentration ppmNO(FTIR)NO(Indrio)NO2(FTIR)NH3(FTIR)14:2114:2214:2314:2414:2514:26TimeJul 26,2021 02004006008001000120014001600Species concentration ppmNO(FTIR)NO(Indrio)NO2(FTIR)NH3(FTIR)Results agreed well with lab instrumentation1.5 sec time response(5 sec required for lab

5、instruments)AMMONIA MEASUREMENTS AT ECTO LAB(SWRI)1900195020002050210021502200Time s10203040506070NH3 concentration ppmExpectedIndrioFTIRIndrios Ignis sensors can track transients significantly better than FTIRZERO WATER INTERFERENCE4400460048005000520054005600580060006200Time s0246810121416Concentr

6、ationWater%Indrio NH3 ppmFTIR NH3 ppmZERO NOX INTERFERENCE500100015002000250030003500400045005000Time s050100150200250300350400NH3 concentration ppmExpectedIndrioFTIRNO(FTIR)NEXT STEPS:OSAR DEMONSTRATIONIgnis Sensor control boxSimulated Exh