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# OAR Box 1147 Prepped by Ollie Stewart



### Document

Number: 

# 212)IV-E-8 6 Docket Number: 

# A-87-1 1

Printed 4/22/2008 2:42:58 PM

Sheet 212 of 242P. 2

> * 0 STAm^ § A \ UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y X^kWmirJ

AN N ARBOR . MICHIGA N 4810 5 % , rt<? <m PHtf * 

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- vX ;\ ' WoTF-C^ 0 , OFFIC E O F

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MEMORANDUM VA P r ,->r.v\£ f SUBJECT : Visi t t o Ford Moto r Compan y 

# r FROM : Joh

n Polasek , Mechanica l Enginee r Standard s Developmen t an d Suppor t Branc h. ' i. , TO : Publi c Docke t A-87-1 1 THRU : Joh

n F . Anderson , Senio r Projec t Manage r Standard s Developmen t an d Suppor t Branc h
I n a telephon e conversation , Mr . Walte r Kreuche r o f Ford Moto r Compan

yindicate d tha t Ford' s buildu p o f EPA' s simplifie d refueling system

a s applie d t o the Ford Tauru s fue l tan k wa s no t operationa l a t flowrate s abov e 7 gpm . H e mentione d tha t fue l coul d no t be dispense d a t 1 0 gp mwit heithe r 9. 0 RVP fue l or 11. 5 RV

P fuel . Prematur e shutoff s wer e observe d fo r dispensing rate s ove r 7 gpm . Mr . Kreuche r aske d fo r our assistanc e i n orde r t o mak e Ford' s refueling contro l system s operationa l wit h 11. 5 RV P fue l dispense d a t 1 0 gpm . W e agree d t o visi t the Ford tes t sit e on January4 , majo r component s o f our system , suc ha s spitbac k valve , a vapo r ven t valv e an d addition , sinc e Ford di d no t hav e sufficien t analyzing dat a whil e test s wer e being conducted , w e brough t ow n analyzing equipmen t including a stri p char t recorde r analo g pressur e transducers . A n attendanc e lis t i s attached .

1989 , bringing the the restrictor , a our canister , tes t equipmen t I n

fo r our an d
•Base d upo n initia l discussion s wit hFord personnel , i t appeare d tha t prematur e shutoff s wer e observe d wit hhigh pressure s i n the fillerneck " bu t lo wpressure s i n the tank . Thi s indicate d a problemi n the fillnec k eithe r wit hth e restricting colla r or th e antispitbac k bal l valve . Upo n examinatio n i t appeare d tha t the spitbac k valv e wa s significantl yconstricted . Ford had use d a rubbe r hos e t o hous e the spitbac k valv e a t the en d o f the fillerpipe . Th e hos e pinche d the plasti c fingers , causing the bal l t o partiall y clos e the valv e hole . I n addition , Ford' s restricto r colla r had a large r li p a s compare d t o our restrictor .P. 3 ? Presumin g th e proble m t o b e th e spitbac k valv e an d perhap s th e restrictor , w e decide d t o tes t th e syste mwithou t eithe r one . Afte r seeing tha t th e systemi n thi s configuratio n fille d a t 1 0 gpm , w e attache d ou r spitbac k valv e t o th e en d o f th e fillerpipe . Testin g a t 1 0 gpmwit h9. 0 RV P fuel , th e system worke d properl yan d n o prematur e shutoff s wer e observed . Finally , w e pu t ou r restricto r colla r i n th e fillerpip e an d th e syste mfille d properl ya t 1 0 gpmwit h9. 0 RV P fue l an d 11. 2 RV P fuel . Pressur e trace s o f th e systemperformanc e wer e photocopie d an

d lef t wit hMr . Kreucher . Base d upo n th e result s o f thes e tests , i t appear s tha t Ford' s spitbac k valv e wa s causin g a restrictio n a t hig h flowrates . W e suggeste d tha t For d purchas e a ne wspitbac k valv e an

d attac hi t i n suc ha wa ytha t th e finger s wil l no t restric t th e movemen t o f th e ball . Byreplacin g th e spitbac k valve , For d shoul d hav e a refuelin g contro l systemoperationa l i n th e 4-1 0 gpmrang e wit heithe r 9 RV P fue l o r 11. 5 RV P fuel . Attachmen t 6704 WP. 4

Name s Le e Jone s Joh n Anderso n Michae l Murph

y Joh n Polase k Dewai n Belot e W.M . Kreuche r Doug Gerde s Pa t Merfel d Pa t Moi r Compan y EP A EP A EP A EPA Ford Ford Ford Ford Fue l Ford Fil l Phon e # 313-668-420 0 313-668-449 6 313-668-420 0 313-668-420 0 313-322-567 0 313-845-824 7 313-322-036 3 313-390-131 8 313-845-748 1