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# OAR Box 1147 Prepped by Ollie Stewart



### Document

Number: 

# 219)IV-E-9 3 Docket Number: 

# A-87-1 1

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

Sheet 219 of 242> tos ">

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

### MA Y5198 9 OFFIC E O F AI R AN D RADIATIO N

MEMORANDU

M SUBJECT : FROM : TO : NHTS AEvaluatio n o f Onboar d Equippe d Tauru s

Joh n F . Anderson , Senio r Projec t Manage r Standard s Developmen t an d Suppor t Branc h Docke t A-87-1 1 On Apri l 24-25 , 198 9 Mr . Scot t York o f NHTS Aan d Mr . Henry Ozo g o f Arthu r D . Littl e visite d the lab t o performan evaluatio n o f the performanc e o f the Ford Tauru s vehicl e whic h w e hav e equippe d wit h onboard refueling controls . Mos t o f thei r time wa s spen t driving th e vehicl e t o evaluat e bot h it s fil l characteristic s an d t o look fo r an

ydriveabilit yproblems . I n the cours e o f th e evaluation , approximatel y65 0 mile s wer e logge d on the ca r an d thre e fill s wer e conducted . Driving involve d bot h expresswayan d loca l road s an

d include d a col d star t o n the mornin g o f Apri l 25th . Fueling s wer e don e a t fue l dispensin g rate s betwee n 9 an d 1 2 gallon s pe r minute , wit h fue l RVP s o f 10. 7 t o 14. 0 ps i (including on e fil l i n Chicag o using gasohol) . Bot h Mr . York an d Mr . Ozo g indicate d tha t the ca r experience d no problem s o f an ykin d during the evaluation . Fueling s wer e al l normal , wit h n o spitbac k o r prematur e shutoff s an

d driving wa s similarl ycompletel ynorma l wit h n o detectabl e driveabilit yproblems . Asecon

d ca r wa s used fo r compariso n purpose s during the firs t vehicl e fueling , whic h wa s conducte d i n the vicinit yo f Detroi t Metr o Airport . Tha t vehicl e experience d repeate d prematur e shutoff s an d coul d onl ybe successfull yfuele d a t a greatl yreduce d dispensing rate . Eve n a t that , the vehicl e experience d significan t spitbac k a t the en d o f the fill . Thi s secon d car , a 198 8 Buick , wa s returne d t o the An n Arbo r facilit ybefor e Mr . York an d Mr . Ozo g lef t fo r Chicago .P. 3

Le e Jone s an

d Ji mMarti n accompanie d Mr . Yor k an d Mr . Ozo g t o observ e the evaluatio n process . Th e attache d tabl e summarize s som

e pertinen t informatio n abou t th e evaluation . Following the vehicl e evaluation , I presente d a briefing o n the hardwar e developmen t an d o n our tes t results . I use d the same briefing material s a s previousl ypresente d t o Dr . J.J . Li u o f NHTSA . W e als o pu t th e vehicl e on the lif t s o tha t Mr . York an d Mr . Ozo g coul d inspec t th e hardware .

cc : Scot t York , NHTS A Richar d D . Wilson , OM S 1006 wTabl e 1 Tri p Summaryfo r NHTS Aan d A D Littl e Evaluatio n o f Onboar d Equippe d For d Tauru s P. 4

Even t Depar t Ann Arbo r M i leg e 884 9 Comment s

2:30pm , Apri l 24 , 1989 . Scot t York , Le e Jone s i n car . Ji mMarti n i n '8 8 Buick . Detroi t Metr o Firs t fueling

Stop fo r nigh t Thir d fueling 888 2

Retur n t o Ann Arbo r Secon d fueling 915 8

9214

Retur n t o Ann Arbo r 949 6 Pic k u p HenryOzog . 1 2 ga l pe r mi n dispensing rate , 10. 7 RVP , 11. 3 gal . '8 8 Buic k woul d no t fil l a t ful l flowan d experience d significan t spitbac k a t en d o f fill . Dro p of f '8 8 Buic k a t MVEL . Chicago . 9 ga l pe r minute , 11. 2 RVP , 11. 4 gal . Partia l fill . Chicago . 10 % ethano l blend . 9. 2 ga l pe r minute , 14. 0 RVP , 9. 8 gal . Completio n o f trip . Resul t o f evaluation : N o fueling problem s o r driveabilit yproblem s wer e observe d a t an

ytime .