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# OAR Box 1147 Prepped by Ollie Stewart



### Document

Number: 

# 147 ) IV-E-2

0 Docket Number: 

# A-87-1 1

Printed4/22/2008 2:42:55PM Sheet 147 of 242

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UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y AN N ARBOR . MICHIGA N 4810 5 

### JA N 

### 2 0 198 8 OFFIC E O F AI R AN D RADIATIO N

MEMORANDU

M SUBJECT : FROM : TO : THRU : EPA/FORD Meeting Regardin g Onboar d contro l System s

Glen n W . Passavant , Senio r Projec t Manage r XJ^SM^CA XLM&u+Jr^T Standard s Developmen t an d Suppor t Branc h ' Publi c Docke t A-87-1 1 Cheste r J . France , Chie f Standard s Developmen t an d nc h O n Octobe r 14 , 198 7 severa l representative s o f For d Moto r Co . me t wit h EP

Aengineer s a t the Moto r Vehicl e Emissio n Laboratoryi n An

n Arbor , Michiga n t o discus s EPA' s work o n liqui d seal s an

d othe r relate d topic s Thi s meeting wa s arrange d a s a follow-u p t o a Septembe r 16 , 198 7 meeting wit h For d regarding onboar d vapo r recoveryhel d a t EC S Laboratorie s in Livonia , Michigan . Alis t o f attendee s i s attached . Anumbe r o f item s o f interes t wer e discusse d a t the meeting . First , regarding liqui d seals , EP Aexplaine d t o Ford tha t liqui d seal s had bee n teste d on a vehicl e an d tha t th e tes t dat a ar e availabl e i n publi c docke t A-84-07 . Ford expresse d concern tha t the tes t dat a in a Decembe r 198 6 EP A technica l repor t entitle d "Evaluatio n o f th e Feasibilit yo f Liqui d Fillnec k Seals " di d no t mee t EPA' s propose d refueling emission s standard . EP Aexplaine d tha t the purpos e o f th e work wa s t o demonstrat e the feasibilit yo f the concep t o f liqui d seal s an

d tha t n o attempt s wer e mad e t o optimiz e th e design o f our system

i n orde r t o the mee t an ypossibl e emissio n standard .P. 3

tt • - In fact , th

e currentl ypropose d emissio n standar d had no t bee n develope d whe n th e testing wa s being conducted . W e mentione d tha t the America n Petroleu mInstitut e ha

d develope d a

n optimize d liqui d sea l typ e onboard system whic h showe d tes t dat a whic h me t th

e propose d standard . W e discusse d EPA' s view s o n the advantage s o f liqui d seal s versu s mechanica l seal s a s the yar e detaile d i n our rulemaking documents . Ford mentione d tha t theymayhav e dat a on a 197 9 vehicl e wit h a submerge d fill . Theysai d the ywoul d chec k o

n thi s an

d provid e u s wit h an yavailabl e data . W e discusse d the relationshi p betwee n the require d fil l heigh t for a liqui d sea l an d fue l tan

k bac k pressure , an

d talke d ove r idea s on howfil l heigh t migh t b e minimized . Severa l othe r onboard relate d issue s wer e discussed . W e reviewe d th

e statement s i

n the NPR

M an d supporting document s concerning leadtime requirements . EP Aquestione d Ford abou t the advantage s o f plasti c fue l tanks . For d responde d tha t thei r ligh t weigh t i n compariso n t o stee l tank s i s the mai n advantage , and , i t i s als o possibl e tha t i n certai n cras h mode s plasti c tank s ar e mor e crashworthy . Also , we discusse d th e potentia l safet ybenefit s o f bladde r tanks , such a s flexibilit y whic h mayallo wi t t o remai n intac t eve n whe n the stee l tan k shel l i s broke n ope n i n a crash . Finally , Ford mentione d tha t a Societ yo f Automotiv e Engineer s Committe e i s working wit h nozzl e manufacturer s t o ensur e tha t nozzl e spou t an d vehicl e fillnec k change s ar e compatible . In Ford' s view , a ke yissu e i s the lengt h o f th e spring foun

d o n th e outsid e o f th

e nozzl e spout , stating tha t i f i t i s to o lon

g i t coul d interfer e wit h an d /o r damag e a mechanica l seal . For d als o state d tha t th e committe e i s als o trying t o ensur e tha t Stag e I I nozzl e spou t length s ar e compatibl e wit h onboar d systems . Attachmen tP. 4

EPA/FORD Meeting Regarding Onboar d Contro l System s

Octobe r 14 , 198 7 Lis t o f Attendee s FOR D Georg e Lavoi e Mik e Tokarsk

y Mik e Harringto n Mik e Schwar z Wal t Kreuche r EP A Glen n Passavan t Joh n Anderso n Jean Schwendema n