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# OAR Box 1856 Prepped byKeeiaRichards



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# 73 ) ll-A-1 0 Docket Number: 

# A-87-1 1

Printed 11/24/200812:41:50PM Sheet 73 of 82P. 2

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DRAF T Subpar t C Emissio n Regulation s fo r 19XXand Late r Mode l Yea r Ne w o r In-Us e Light-Dut yVehicle s an d Ne wo r In-Us e Light-Dut yTrucks ; Refuelin g Emission s Tes t Procedure .

Jul y198 5P. 3 * Subpar t C - Emissio nRegulation s fo r 19X Xan d Late r Mode l Yea r Ne wor In-Us e Light-Dut yVehicle s an d Ne wor In-Us e Light-Dut yTrucks ; Refueling Emission s Tes t Procedure . §86.20 1 Genera l applicability . (a ) Th e provision s o f thi s subpar t ar e applicabl e t o 19X Xan d late r mode l yea r ne wlight-dut yvehicle s an d light-dut ytrucks , an d t o 19X

Xan d late r mode l yea r light-dut yvehicle s an d light-dut ytruck s i n actua l use . '(b ) Provision s o f thi s subpar t appl yt o test s performe d b

ybot hth e Administrato r an d moto r vehicl e manufacturers . (c ) Th e procedur e o f thi s subpar t i s intende d t o b e performe d i n conjunctio nwit hth e exhaus t an d evaporativ e emission s test s o f Subpar t B . Th e following section s o f Subpar t B appl yequall yt o thi s sectio nan d wil l no t b e repeate d i n thi s section . 1 . §86.10 3 Abbreviations . 2 . §86.10 4 Sectio nnumbering ; construction . 3 . §86.113-8 XFue l specifications . 4 . §86.117-7 8 Evaporativ e emissio nenclosur e

calibration . 5 . §86.121-8 2 Hydrocarbo nanalyze r calibration .P. 4

§86.20 2 Definitions , (a ) Th e definition s o f Subpar t B appl yt o thi s Subpart . (b ) Specifi c term s use d in thi s subpar t ar e define d a s follows . "In-us e vehicle " mean s a light-dut yvehicl e o r light-dut ytruc k whic hi s use d o n th e publi c highway s b yth e "ultimat e purchaser " a s describe d i nSectio n 21 6 o f th e Clea nAi r Act , o r an ysubsequen t purchaser .

. ''Integrated " refueling emissio ncontro l systemmean s a system wher e vapor s resulting fro mrefueling ar e store d i n a commo nvapo r storag e uni t wit heithe r o r bot hth e diurna l heating o r ho t soak emission s o f th e vehicl e an

d purge d througha commo npurg e system . "Non-integrated " refueling emissio ncontro l system mean s a systemwher e fue l vapor s fro mrefueling ar e store d i n a vapo r storag e uni t assigne d solel yt o th e function s o f storing refueling vapors .



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§86.20 3 [Reserved ]

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§86.20 4 Introduction ; structur e o f subpart . (a ) Thi s subpar t describe s th e equipmen t require d an d th e procedure s t o followi norde r t o perform refueling emission s test s o n light-dut ygasoline-fuele d vehicle s an d light-dut ygasoline-fuele d trucks . Subpar t Aset s fort h testing requirement s an d tes t interval s necessaryt o compl y wit hEPAcertificatio n procedures . (b ) Two topic s ar e addresse d i n thi s subpart . §86.20 7 set s fort hspecification s an d equipmen t requirements ; tes t procedure s an d dat a requirement s ar e liste d (i napproximat e orde r o f performance ) i n§§86.22 7 through86.243 .



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§86.20 5 [Reserved ] §86.20 6 [Reserved ]



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§86.20 7 Sampling an d analytica l system . (a ) Componen t description . Th e component s use d i n refueling emission s sampling system s ar e th e same component s use d i n th e evaporativ e emission s sampling system s a s describe d i n §86.107 , excep t fo r th e following component s whic har e exclusiv e t o refueling testing . (1 ) Refueling equipment . Th e refueling equipmen t shal l consis t o f a fue l car t wit htemperatur e contro l equipment , fue l flowsafet yswitch , servic e statio ntyp e dispensing pump , meter , hose , an d nozzle . Onl yth e hos e an d nozzl e ar e insid e th e enclosure . Th e hos e shal l intersec t th e enclosur e wal l belo wth e leve l o f th e vehicl e fue l tank filler ; th e sea l a t th e intersectio no f th e hos e an d th e wal l shal l b e ga s tigh t i n accordanc e wit h §86.117 . Th e amoun t o f fue l trappe d i n th e hos e an d othe r piping outsid e o f the temperatur e contro l uni t shoul d b e minimized . Th e fue l car t mus t b e capabl e o f delivering fue l a t 88+2° F (31+1°C ) an d a t a flowrat e betwee n8. 0 an d 10. 0 gal/mi n (30. 3 an d 37. 9 l/min) . (2 ) Tank fue l heating system . Th e heating system fo r refueling testing mus t adher e t o th e descriptio no f §86.10 7 (a)(4 ) wit hth e following temperatur e requirements . Th e standard temperatur e fo r residua l fue l i n th e vehicl e fue l tan k shal l b e 86°-95° F (30°-35°C) , an d shal l als o b e 2°-5° F (l.l°-2.8°C ) greate r thanth e temperatur e o f the dispense d fue l during th e refueling procedur e o f paragraph§86.23 3 (k) .P. 9 (3 ) Temperatur e recording system . Stri p char t recorder(s ) o r automati c dat a processo r shal l b e use d t o record enclosur e ambien t an d vehicl e fue l tank temperature s during th e test . Th e temperatur e recorder(s ) o r dat a processo r shal l record eac htemperatur e a t leas t onc e every 2 0 seconds . Th e recording systemshal l b e capabl e o f resolving time t o + 15 s an d b e capabl e o f resolving temperatur e t o +0.75° F (0.42°C) . Th e temperatur e recording system(recorde r an d sensor ) shal l hav e anaccuracyo f +3° F (1.7°C) . Two ambien t temperatur e sensors , connecte d t o provid e on e averag e output , shal l b e locate d i nth e enclosure . Thes e sensor s shal l b e locate d a t th e approximat e vertica l centerlin e o f eac hsid e wal l extending 4 inche s (1 0 cm ) (nominally ) int o th e enclosur e a t a heigh t o f 3+0. 5 f t (0.9+0.2m) . Fo r certificatio n vehicles , th e vehicl e fue l tank temperatur e sensor s shal l b e locate d i n th e fue l tank s o a s t o measur e th e temperatur e o f th e residua l fue l i n th e tank an d th e vapo r spac e i n th e tank . Th e temperatur e sensing zone s o f th e temperatur e sensor s shal l no t b e i n contac t wit hth e wall s o f th e fue l tank . Fo r in-us e vehicles , th e temperatur e sensor s shal l b e attache d t o th e externa l wall
- o f th e vehicl e fue l tank i na manne r suc htha t th e temperatur e sensing capabilit yi s no t impaired . Temperatur e sensor s mus t b e locate d s o tha t the y wil l no t li e betwee n o r nea r th e interfac e o f th e fue l tank



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an d th e heating source . Atemperatur e senso r shal l als o b e located i n th e fue l dispensing nozzl e t o measur e dispense d fue l temperature . Manufacturer s shal l arrang e tha t vehicle s furnishe d fo r testing a t Federa l certificatio n facilitie s b e equippe d wit hiron-constantanTyp e J thermocouple s fo r measuremen t o f fue l tan k temperature . (4 ) Mixing blower . An explosion-proo f blowe r o f 100-20 0 ftVmi n(2- 6 m 3 /min ) capacit yi s require d fo r mixing th e enclosur e atmospher e during tests . Thi s blowe r shal l b e directe d toward an yspille d fue l . t o ai d evaporation .



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-§86.20 8

§86.20 9 §86.21 0 §86.21 1 §86.21 2 §86.21 3 §86.21 4 §86.21 5 §86.21 6 §86.21 7 §86.21 8 §86.21 9 §86.22 0 §86.22 1 §86.22 2 §86.22 3 §86.22 4 §86.22 5 §86.22 6 [Reserved ]

[Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] [Reserved ] • p.1 1

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§86.22 7 Tes t procedure ; overview . (a ) Th e procedur e describe d i nthi s an d subsequen t section s i s use d t o determin e th e conformit yo f vehicle s wit hth e refueling emission s standard s se t fort hi nSubpar t Afo r light-dut yvehicle s an d light-dut ytrucks . (b ) Th e refueling emission s tes t i s designe d t o measur e hydrocarbo nemission s resulting fro mth e displacemen t o f fue l tan k vapo r during vehicl e refueling . Th e refueling emission s shal l b e measure d b yth e enclosur e technique . Th e tes t shal l b e conducte d i ntwo (2 ) portions , i norde r t o tes t bot hstorag e capacit yan d purg e capabilit yo f th e refueling emissio n contro l system . (c ) Al l emissio ncontro l system s installe d o no r incorporate d i n a ne wmoto r vehicl e shal l b e functioning during al l procedure s i nthi s subpar t except : 1 ) i ncase s o f componen t malfunctio n o r failure , an d 2 ) during certai n specifie d fue l drai n an d fil l operation s a t whic htime s th e refueling emissio n contro l caniste r i s disconnected . Maintenanc e t o correc t componen t malfunctio no r failur e shal l b e authorize d i n accordanc e wit h§86.0XX-25 .

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-§86.22 8 [Reserved ] §86.22 9 [Reserved ]

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§86.23 0 Tes t sequence ; genera l requirements . (a ) Th e placemen t o f th e refueling emission s procedur e i n th e tes t sequenc e o f §86.130-7 8 i s show ni n Figur e CXX-1 . A s indicated , th e storag e capacit yportio n i s t o b e conducte d immediatel yprio r t o th e vehicl e preconditioning procedure s describe d i n§86.13 2 o f Subpar t B . Th e purg e portion , require d onl yfo r vehicle s wit h non-integrate d refueling emission s contro l systems , i s t o b e conducte d immediatel yfollowing th e ho t soak evaporativ e emissio n tes t i f suc htes t i s required ; otherwise , i t i s t o be , conducte d immediatel yfollowing th e ho t transien t segmen t o f th e exhaus t emissio ntest . Th e refueling emission s tes t procedur e i s subsequentl ydescribed . (b ) Ambien t temperatur e level s encountere d b yth e tes t vehicl e shal l no t b e les s tha n68° F (20°C ) no r mor e tha n 86° F (30°C) . Th e vehicl e shal l b e approximatel yleve l during al l phase s o f th e tes t sequenc e t o preven t abnorma l fue l distribution .

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§86.23 1 Vehicl e preparation . (a ) Prepar e th e fue l tank fo r recording th e prescribe d fue l an d vapo r temperature s a t th e location s describe d i n §86.20 7 (a)(3) . (b ) Provid e additiona l fitting s an d adapters , a s required , t o accommodat e a fue l drai na t th e lowes t poin t possibl e i n th e tank(s ) a s installe d o nth e vehicle . In-us e vehicle s shal l b e modified , i f a t all , i n a manne r whic hcause s n o permanen t alteratio no f th e vehicle . (c ) Provid e valving o r othe r mean s t o allowth e venting o f th e refueling vapo r line t o th e atmospher e rathe r than t o th e refueling caniste r whe nrequire d b ythi s tes t procedure .

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§86.23 2 Vehicl e Preconditioning . (a ) Vehicle s whic har e parke d o r store d prio r t o entering th e tes t procedur e specifie d i n§86.23 3 shal l hav e thei r ga s cap s loosene d o r remove d t o allowescap e o f gasolin e vapors , thu s preventing abnorma l loading o f th e caniste r prio r t o initiatio n o f th e capacit ytest . Car e mus t b e take n t o ensur e tha t wate r canno t ente r th e fue l tank(s ) whe nth e vehicl e i s parke d or store d wit hth e ga s cap(s ) eithe r loosene d or removed . •(b ) Immediatel yprio r t o th e star t o f th e capacit y portio n o f th e refueling contro l test , §86.23 3 (a) , vehicle s shal l b e prepare d fo r testing a s follows : (1 ) Th e fue l tank(s ) o f manufacturer-supplie d certificatio n vehicle s shal l b e draine d an d fille d t o one-tent ho f th e nomina l tank capacity , fo r eac htank i f th e vehicl e i s equippe d wit hmor e thanon e tank , determine d t o th e neares t one-tent ho f a U.S . gallo n(0.3 8 liter) , wit hthe specifie d tes t fuel , §86.113-8X . During th e 1 0 percen t fueling , th e canister(s ) shal l b e disconnected . (2 ) In-us e vehicle s shal l hav e th e following performed .

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-P.1 7 (i ) Th e vehicl e fue l tan k shal l b e draine d an d fuele d t o 4 0 percen t o f tan k capacit yt o th e neares t one-tent ho f a U.S . gallo n (0.3 8 liter ) wit hth e specifie d tes t fuel , §86.113-8X . Vehicle s shal l the nb e drive n fo r 5 0 mile s according t o th e Durabilit yDriving Schedul e containe d i nAppendi xI V o f thi s Part , o r equivalent , a s approve d b

yth e Administrator , prio r t o th e star t o f testing a s specifie d i n§86.233 . I f th e vehicl e i s equippe d wit htwo fue l tanks , th e engin e fue l suppl yshal l b e switche d fro

mth e firs t tan k t o th e secon

d tank approximatel ya t th e mid-poin t o f th e 5 0 mil e drive . (ii ) Following th e 5 0 mil e drive , th e fue l tank(s ) o f th e in-us e vehicl e shal l b e draine d an d refille d t o one-tent ho f th e nomina l tank capacity , determine d t o th e neares t one-tent ho f a U.S . gallo n(0.3 8 liter) , wit hth e specifie d tes t fuel , §86.113-8X . During th e 1 0 percen t fueling , th e canister(s ) shal l b e disconnected .

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-§86.23 3 Refueling Contro l test . (a ) Th e evaporativ e emissio n enclosur e shal l b e purge d for severa l minute s immediatel yprio r t o th e test . NOTE : I f a t an

ytime th e hydrocarbo nconcentratio n exceed s 15,00 0 pp mC th e enclosur e shoul d b e immediatel ypurged . Thi s concentratio nprovide s a 4: 1 safet yfacto r agains t th e lean flammabilit ylimit . (b ) Th e FI D hydrocarbo n analyzer , an d additiona l analyzer , i f needed , shal l b e zeroe d an d spanne d immediatel yprio r t o th e test . (c ) I f no t alread yon , th e enclosur e mixin g fan shal l b e turne d o n a t thi s time . (d ) Th e capacit yportio n o f th e refueling contro l tes t shal l b e performe d immediatel yprio r t o th e vehicl e preconditioning procedure s describe d i n §86.13 2 o f Subpar t B . Th e capacit yportio no f th e refueling tes t shal l b e performe d a s follows :

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-P.1 9 (1 ) Th e tes t vehicle , wit hth e engin e shu t off , shal l b e move d int o th e enclosure . Th e tes t vehicl e window s an

d luggag e compartmen t shal l b e opened . Th e temperatur e sensor s shal l b e connecte d t o th e temperatur e recording systeman d the hea t sourc e shal l b e properl y positione d wit hrespec t t o th e fue l tank(s ) an d connecte d t o th e temperatur e controller . (2 ) Th e temperatur e recording system shal l b e started . (3 ) Th e vehicl e fue l tank liqui d temperatur e shal l be ' brough t t o tes t temperature , a s describe d i n §86.207(a)(2) , an

d maintaine d a t tha t leve l unti l th e beginning o f th e procedur e o f paragraph(d)(6 ) o f thi s section . Th e vapo r temperatur e shal l b e allowe d t o ris e t o withi n +3° F (+1.7°C ) o f th e liqui d temperature , an d shal l remai n withi n suc ha rang e fo r a minimu mo f 1 0 minute s prio r t o th e star t o f th e procedur e o f paragraph(d)(6 ) o f thi s section . (4 ) An electrica l ground shal l b e attache d t o th e vehicle . Th e refueling nozzl e shal l b e full yinserte d int o th e fille r nec k an d th e safet yswitc houtsid e o f th e enclosur e shal l b e i nth e of f position . Th e enclosur e doo r shal l b e close d an

d sealed . Th e FI D trac e shal l b e allowe d t o stabilize . -17
-P.2 0 (5 ) Th e initia l reading o f th e evaporativ e enclosur e FI D analyze r shal l b e take nimmediatel yprio r t o th e star t o f fue l flow . (6 ) Withi n on e minut e o f obtaining th e initia l reading o f th e evaporativ e enclosur e FI D analyzer , th e refueling operatio nshal l b e started . Th e refueling operatio n shal l b e performe d b yturning th e safet yswitc h o n an d activating th e fue l dispensing nozzle . Th e fue l shal l b e dispense d a t 88°+2° F (31°+1°C ) an d a t a dispensing rat e o f betwee n8. 0 an d 10. 0 gal/mi n(30. 3 an d 37. 9 l/min) . Th e fue l flowshal l continu e unti l th e refueling nozzl e automati c shut-of f i s activated . Th e amoun t o f fue l dispense d mus t b e a t leas t 8 5 percen t o f fue l tank volume , determine d t o th e neares t one-tent ho f a U.S . gallo n (0.3 8 liter) . (7 ) Th e fina l reading o f th e evaporativ e enclosur e FI D analyze r shal l b e take n 60+ 5 second s following th e shut-of f o f th e fue l flow . Th e elapse d time , i nminutes , betwee n th e initia l an d fina l FI D reading s shal l b e recorded .

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-P.2 1 (8 ) Fo r vehicle s equippe d wit hmor e tha n on e fue l tank , th e procedure s describe d i nparagraph s (d)(1 ) through (d)(7 ) above shal l b e performe d fo r eac hfue l tank . (e ) Th e caniste r saturatio n portio n o f th e refueling contro l tes t shal l b e performe d immediatel yfollowing th e capacit yportio n o f th e refueling test s a s describe d i n paragraph(d ) above . Th e caniste r saturatio nportio no f th e refueling tes t shal l b e performe d a s follows : (1 ) Wit hthe evaporativ e enclosur e doo r open , th e vehicl e fue l tank(s ) shal l b e drained . Th e vehicl e ma yb e remove d fro

m th e enclosur e t o facilitat e draining o f th e fuel . Th e vehicl e fue l tank shal l the n b e recharge d wit h th e specifi c tes t fuel , §86.113-8X , unti l automati c shut-of f o f th e fue l flowoccurs . Th e enclosur e mixin g an d purg e blower s mayremai no n during draining o f th e fue l tan k bu t th e purg e blower s shal l b e turne d of f durin g refueling an

d th e enclosur e seale d t o allowhydrocarbo n measurement . (2 ) Th e procedur e o f paragraph(e)(1 ) shal l b e repeate d unti l a sharp ris e occur s i n th e reading o f th e FI D analyzer . At thi s time , th e fue l flowshal l b e

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manuall yshu t off . Asharp ris e i nth e hydrocarbo n analyze r reading i s define d a s an increas e i nhydrocarbo n concentratio n b

ya facto r o f a t leas t 3 i n a on e minut e period . (3 ) Fo r vehicle s equippe d wit hmultipl e fue l tank s having separat e refueling emission s contro l canister s fo r eac hfue l tank , th e procedure s describe d i n paragraph s (e)(1 ) an

d (e)(2 ) shal l b e performe d fo r eac hfue l tank . (f ) Th e temperatur e sensor s shal l b e disconnecte d from ' th e temperatur e recording system , th e tes t vehicl e window s an

d luggag e compartment s mayb e closed , an d th e tes t vehicle , wit hth e engin e shu t off , shal l b e remove d fro mth e enclosure . (g ) Immediatel yfollowing th e refueling emission s capacit ytes t an d caniste r saturation , th e vehicl e preconditioning shal l b e performe d according t o §86.13 2 o f Subpar t B wit hth e exceptio ntha t th e refueling contro l caniste r shal l b e disconnecte d during th e fue l drai nan d fill . I f desired , th e 4 0 percen t tank fue l volum e require d mayb e attaine d b yadjusting th e fue l leve l i n th e tank following caniste r saturatio n rathe r tha nb ydraining an

d refueling .

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-P.2 3 (h ) Following vehicl e preconditioning a s specifie d i n §86.132 , th e diurna l breathing los s tes t shal l b e performe d a s specifie d i n §86.13 3 wit hth e exceptio ntha t during th e drai n -an d 4 0 percen t fueling th e emissio n contro l caniste r shal l b e disconnected . I n addition , additiona l preconditioning a s describe d i n §86.13 2 (a)(3 ) shal l no t b e allowed . (i ) Th e running loss , col d an d ho t star t exhaust , an d evaporativ e emission s test s shal l b e performe d a s necessaryaccording t o §§86.13 4 through86.138 . (j ) Th e caniste r purg e portio n o f th e refueling contro l tes t i s require d t o b e performe d o n vehicle s equippe d wit hnon-integrate d refueling emissio ncontro l systems . Th e caniste r purg e portio n o f th e refueling contro l tes t shal l b e performe d immediatel yfollowing th e ho t soak evaporativ e emissio ntest , §86.138 , i f suc htes t i s required , o r immediatel yfollowing th e ho t transien t exhaus t emissio n tes t otherwise . (1 ) I f th e ho t soak evaporativ e emissio n tes t i s required , th e vehicl e shal l b e placed , b ybeing pushed , o n a dynamomete r withi n on e hour afte r th e completio no f th e ho t soak evaporativ e emissio n test .

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-(2 ) Th e vehicl e exhaus t systemshal l b e connecte d

eithe r t o a CVS o r t o a nexhaus t collectio nsystemwhic h discharge s outsid e o f th e dynamomete r tes t cell . During operatio n o n th e dynamometer , road loa d powe r setting shal l b e a s specifie d i n §86.129 , an d a nauxiliarycooling fana s specifie d i n §86.13 2 (b ) shal l b e used . I naddition , auxiliarycooling fan s mayb e locate d s o a s t o provid e cooling fo r th e vehicl e tire s an d brake s whic har e i nus e whe n th e vehicl e i s i n operatio no n the chassi s dynamometer . (3 ) Th e vehicl e shal l b e operate d throughon e Urba n Dynamomete r Driving Schedul e (UDDS ) tes t procedure , describe d i n §86.115-7 8 an d containe d i nAppendi xI . Following completio no f th e UDDS , th e vehicl e shal l b e ho t soake d fo r 60+ 1 minute s wit hth e cooling fan s turne d off , th e engin e compartmen t cove r closed , an d th e CV S eithe r turne d of f o r th e exhaus t collectio nsystemdisconnecte d fromth e tailpipe(s ) o f th e vehicle . (4 ) Th e preceding paragraph , (j)(3) , shal l b e repeate d unti l approximatel y3 0 percen t o f th e tank fue l volum e ha s bee n used . Th e numbe r o f repetition s shal l b e calculate d according t o th e following equation :

(F E x0.3V

) - 11. 1 R= T

7. 5

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Where :R= numbe r o f repetition s rounde d upwar d

t o the.neares t whol e numbe r F E = EPAestimate d fue l econom yo f th e tes t vehicl e o nth e UDDS , mile s pe r gallo n V T= nomina l fue l tank volume , gallon s Th e vehicl e mayb e drive nof f th e dynamomete r an d ou t o f th e dynamomete r tes t cel l a t minimu m throttle , th e engin e shu t off , an

d th e vehicl e pushe d t o an overnigh t parking site , i f necessary , betwee n repetition s o f th e UDDS . I n this

- case , th e vehicl e ga s cap shal l b e loosene d during th e time th e vehicl e i s no t operating . (5 ) I f th e vehicl e i s equippe d wit hmor e tha non e fue l tank , paragraph s (j)(2 ) through(j)(4 ) o f thi s sectio n shal l b e conducte d fo r eac hfue l tank . (6 ) Arefueling tes t a s containe d i nparagrap h(d ) o f thi s sectio n shal l the n b e conducte d wit hth e exceptio n tha t th e amoun t o f fue l dispense d shal l no t b e a s i n paragraph(d)(6) . Th e amoun t o f fue l dispense d shal l b e th e amoun t o f fue l calculate d t o hav e bee nuse d i nth e previou s procedures :

V (7. 5 R+ 11. 1 ) F = F E -23
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Where : V F = fue l volum e dispensed , t o th e neares t one-tent ho f a U.S . gallo n (0.3 8 liter ) R= numbe r o f repetition s conducte d i n accordanc e wit hparagraph(j)(4 ) abov e F E = EPAestimate d fue l econom yo f th e tes t vehicl e o n th e UDDS , mile s pe r gallo n (7 ) Th e temperatur e sensor s shal l b e disconnecte d fromth e temperatur e recording system , th e tes t vehicl e window s an d luggag e compartment s mayb e closed , an d th e tes t vehicle , wit hth e engin e shu t off , shal l b e remove d fromth e enclosure .

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§86.23 4 [Reserved ] §86.23 5 [Reserved ] §86.23 6 [Reserved ] §86.23 7 [Reserved ] §86.23 8 [Reserved ] §86.23 9 [Reserved ] §86.24 0 [Reserved ] §86.24 1 [Reserved ]

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§86.24 2 Record s required . Th e following informatio n shal l b e recorde d wit h respec t t o eac htest : (a ) Tes t number . (b ) System

o r devic e teste d (brie f description) . (c ) Dat e an

d time o f day . •(d ) Instrumen t operated . (e ) Operator . (f ) Vehicle : I D number , manufacturer , mode l year , engin e family , fue l system(including numbe r o f carburetors , numbe r o f carbureto r barrels , fue l injectio n type , an

d fue l tank(s)
- capacit yan d location) , basi c engin e descriptio n (including displacement , numbe r o f cylinders , turbocharge r (i f used) , an d catalys t usage) , engin e code , odomete r reading . (g ) Al l pertinen t instrumen t informatio nincluding nozzl e an

d fue l car t description . A s an alternative , a referenc e t o a vehicl e tes t cel l numbe r mayb e used , wit h advanc e approva l o f th e Administrator , provide d tes t cel l calibratio nrecord s showth e pertinen t instrumen t information . -26
-P.2 9 (h ) Recorde r charts : Identif yzero , span , an d sampl e traces . (i ) Enclosur e barometri c pressur e an d ambien t temperature . NOTE : Acentra l laboratorybaromete r mayb e used , provide d tha t individua l tes t cel l barometri c pressure s ar e show nt o b e withi n +0. 1 percen t o f th e barometri c pressur e a t th e centra l baromete r location .

. -(j ) Temperatures : vehicl e fue l tank , bot hliqui d an d vapor , sufficien t t o verif yrequire d tes t conditions ; dispense d fuel , initia l an d final . (k ) Fue l dispensing rate . (1 ) Al l additiona l informatio n necessaryfo r th e calculation s specified

- i n§86.243 .

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§86.24 3 Calculations . Th e calculatio no f th e ne t hydrocarbo nmas s chang e i n th e enclosur e i s use d t o determin e refueling mas s emissions . Th e mas s i s calculate d fro m initia l an

d fina l hydrocarbo nconcentration s i n pp mcarbon , initia l an d fina l enclosur e ambien t temperatures , initia l an d fina l barometri c pressures , an d ne t enclosur e volume usin g th e evaporativ e emission s equatio n o f §86.143-78 , wit hth e hydrogen-carbo n rati o equa l t o tha t o f diurna l emissions . Fo r vehicle s wit hmultipl e tanks , th e result s fo r eac htank shal l b e calculate d an d the n summe d t o determin e overal l refueling emissions . Th e fina l result s fo r compariso n wit hth e refueling contro l emissio n standard shal l b e compute d b ydividing th e tota l refueling mas s emission s b yth e tota l gallon s o f dispense d fue l i n th e refueling test . Th e result s o f al l emissio n test s shal l b e rounded , i n accordanc e wit hASTME 29-67 , t o th e numbe r o f decima l place s containe d i n th e applicabl e emissio nstandar d expresse d t o on e additiona l significan t figure .

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Fo r vehicle s wit hnon-integrate d refueling emissio n contro l systems , result s fro mth e refueling capacit y portio n o f th e test , §86.23 3 (d) , an d fro mth e caniste r purg e portio no f th e test , §86.23 3 (j)(6) , shal l b e compute d separately . Th e result s fro meac hportio n o f th e tes t mus t compl ywit hth e emissio nstandard .

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