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ASTM_D_976_-_06_adjunct_2009.pdf
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TM_D_976_ _06_adjunct_2009
CALCULATED CETANE INDEX49300Based on Equation:570Calculated CI=-420.34+0.016 G+0.192 G log M560+65.01(log M)2-0.0001809 M2290-5500.79=一CORRECTION FOR BAROMETRIC PRESSURE54047I8 PTCORRECTIoNFOR280EMP RANGE PRESSURE174-5300=4446482-5585452054-590124270590-626120.80三二二三二三626-5624565510PTURE OR 0%COVERED ATIPE26050060430.81490250手48055三410.82二二二二二二二二二二二4705o240460-0390.8345450口三切8212108210523044037圭0.84112119280丰543022020-41111501-94030970090090041011204o7708o1350.85王王0420330.86二二二二二二二二二¥21041031手0.87卡400C ASTM International290.88100 Barr Harbor Drive,PO Box C700West Conshohocken,PA 19428-2959INTEANATIONALASTM Designation:D976200ASTM Stock Number:ADJD0976E-390270.89EXAMPLE:0.90MID B PT.550 F AT 700 MM HgAPI GRAVITY 33.0上38025CORRECTION FOR MID B.PT.-1.19 x 6=7.140.91CORRECTED MID B PT-550F+7.14F=557.14FCALC.CETANE INDEX(NOMOGRAPH)=48.5190CALC.CETANE INDEX(FORMULA)=48.5223NOTE-The Calculated Cetane Index equation represents a useful tool for estimating cetane number.Due to inherent卡370limitations in its application,Index values may not be a valid substitute for ASTM Cetane Numbers as determined in atest engine.FIG.1 _Nomograph for Calculated Cetane Index(ECS-1 Meter Basis-Method D 613)ASTM.08.2009

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