P. 1 

# OAR Box 1147 Prepped by Ollie Stewart



### Document

Number: 

# 228)IV-E-10 2 Docket Number: 

# A-87-1 1

Printed 4/22/20082:42:59PM

Sheet 228of 242P. 2

* ' -t%\

UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y \J\j\/f-J

AN N ARBOR
. MICHIGA N 48105 

# A-87-n IV-E-/0J .

OFFIC E O F AI R AN O RADIATIO N 

### JU L U 9 199

3 i ; 12199 3 MEMORANDU M SUBJECT : Meetin g wit h AAM ARegardin g Onboar d Refuelin g

Tes t Procedure s - I I J^hu*Crd (ciA4<z*r*yZq FROM : Glen n W . Passavant , Chie f

Specia l Regulator yProject s Branc h TO : Publi c Docke t A-87-1 1 O n Jul y8 , 199 3 member s o f th e Environmenta l Protectio n Agenc y (EPA ) staf f me t wit h representative s o f th e America n Automobil e Manufacturer s Associatio n (AAMA ) t o discus s potentia l change s t o th e refuelin g emissio n tes t procedure s a s lai d ou t i n EPA' s recentl ypublishe d Federa l Registe r notic e o n thi s issu e (Ma y27 , 1993 , 5 8 F R 30731) . Th e meetin g whic h wa s hel d a t th e EP Ala b i n An n Arbo r wa s i n follow-u p t o th e meetin g o f Jun e 27 , 199 3 o n th e sam e topic . A n attendee s lis t i s attached . Acop yo f th e materia l presente d b yAAM Aa t th e meetin g i s attached . Discussion s focuse d o n question s fro mth e previou s meetin g o n potentia l change s i n th e tes t procedur e an d ho wthes e change s coul d potentiall yaffec t syste mdesig n an d safet yconcern s i n use . AAM Aagree d t o provid e furthe r dat a o n severa l point s an d t o follow-u p wit h EP Ai n th e nea r future . Attachment s

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# Question s fro m ou rPreviou s Meeting
.

. Ho wdoe s th e 5 daydiurna l loa d compar e t o a 2 gra m breakthroug h ?

. What are th e vapo rload s fo r

3 daydiurna l th e ORV R Tes t ?

. What siz e canisters are th e manufacturers considering ?
What tes t procedure improvements ar e necessar

yt o encourag e th e integrate d syste m ?

## CANISTE R CONDITIO N WIT H NO-DRIV E DAY S SUCCESSIV E DAYS A T72-9 6 de g F 2.0 L CANISTE R - 9 RV P FUE L 18 0 i — 16 0 14 0 ffi (0 12 0 

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### 40 % TAN KFIL L
1.5 xCapacit y

2 g Breakthroug h

'•'•• ' i « 1 4 1 6 1 8 

### DAYS 2 2 2 4 2 6 2 8 3 0P. 6

5 DA YDIURNA L TES TDAT A RE V DA Y S T 1L D 1B P 2L D 2B P 3L D 3B P 4L D 4B P 5L D 5B P 07/08/9 3

SHE D TEM P 72. 1 96. 5 74. 9 96. 5 76. 2 96. 8 72. 0 96. 5 71. 9 96. 5 72. 0 FUE L TEM P fF) 72. 6 96. 1 76. 3 96. 4 77. 4 96. 6 73. 3 96. 4 73. 2 96. 1 73. 0 CANISTE R

WEIGH T (GRAMS) 1299. 7 1324. 8 1319. 4 1342. 3 1335. 1 1358. 1 1347. 7 1373. 4 1361. 0 1385. 1 

# PRELIMINARY

CANISTE R % BAC K DELT A W TPURG E (GRAMS) 0. 0 25. 1 19. 7 42. 6 35. 4 58. 4 48. 0 73. 7 61. 3 85. 4 21.5 %

31.4 % 45.2 % 48.2 % MODELE D

DELT A W T "(GRAMS ) 0. 0

26. 6 20. 0 44. 2 35. 2 58. 7 47. 3 73. 2 60. 3 86. 0 72. 2 

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# VAPO R VOLUM E 3 DA YDIURNA L

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Blac k = Mechanica l Sea l Re d = Liqui d Sea l 1 0 1 5 2 0 2 5 Tank Siz e - ga l

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# CANISTE R CAPACITYREQUIREMENT S FO R ENHANCE D EVA P 14 0

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# Tes t Procedure Improvement s

Revision s to ou rproposed procedur e that wa s furnishe d at th e last AAMA/EP A meetin g are :
Lowe rth e dispense d fue l temperature to 7 2 deg . F . Stabilize th e fue l temperature afte rth e driv e cycl e wit h a 6 t

o 2 4 hou r soa k at 8 0 deg . F . Revis e th e test fue l specificatio n to 8. 1 ps i RV P max .

Note : W e agai n stres s th e importance o fchangin g th e pretest loadin g o f th e caniste rto a performance base d standard , i.e. , 5 diurna l da y load .P.1 1



# EQUILIBRIU M CONDITION S 9. 0 ps i RV P Indolen e .9 6 Atmo s (Miiford)

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y 8 ( 0
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### 9 0 10 0 11 0 12 0

Temperatur e - de g FP.1 2



# EQUILIBRIU M CONDITION S 9. 0 ps i RV P Indolen e .9 6 Atmo s (Miiford)

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Concentratio n Densit y Temperature - de g FP.1 3



### Temperature 6 0 6 4 6 8 7 0 7 2 7 6 8 0 8 3 8 4 8 8 9 2 9 6 10 0 10 4 10 8 11 2 11 6 12 0 12 4 12 8 13 2 Vapo rPressur e 4.2 0 4.5 6 4.9 5 5.1 5 5.3 6 5.8 0 6.2 7 6.5 8 6.7 7 7.3 1 7.8 7 8.4 8 9.1 1 9.7 9 10.5 1 11.2 7 12.0 7 12.9 2 13.8 2 14.7 6 15.7 5 Concentratio n

29.7 7 32.3 2 35.0 8 36.5 0 37.9 9 41.1 1 44.4 4 46.6 3 47.9 8 51.8 1 55.7 8 60.1 0 64.5 6 69.3 8 74.4 9 79.8 7 85.5 4 91.5 7 97.9 4 104.6 1 111.6 2 Densit

y 3.091 9 3.339 6 3.603 0 3.740 8 3.882 7 4.179 4 4.493 8 4.699 7 4.826 9 5.179 2 5.551 7 5.945 2 6.360 5 6.798 4 7.259 7 7.745 3 8.255 9 8.792 2 9.354 8 9.944 2 10.560 5P.1 4

Vehicle : Caniste rSize : Fue l Tan k

Size : Aerosta rReplacemen t

3. 0 L 2 6 gallon s Conditio n a t Da y1 : Canister s preconditione d t o 1. 5 xWorkin g Capacit y

FT P an d Runnin g Los s Tes t a t 105 F (LA4 , 2NYCC , LA4 ) Canister s entere d diurnal s abov e 1. 5 xWorkin g Capacit y Diurnal s ru n at 65F-105 F / RV P - 9. 0 ps i Non-standar d tes t an d inadequat e purg e resulte d i n significan t SHE D emission s (Al l unit s ar e gram s HC ) Gai n Bac k Purg e 20. 4 25. 9 28. 8 32. 9 25. 9 Cumulativ e Gai n

20. 8 11. 6 4. 7 -0. 1 0. 0 SHE D Day1 Day2 Day3 Day4 Day5 41. 2 37. 5 33. 5 32. 8 25. 9 8. 3 14. 3 16. 3 18. 3 16. 5 Finding : Exposin g full yloade d canister s t o a 5 da ydiurna l demonstrate s significan t bac k purg e11 0 -

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# CANISTE R VAPO R LOS S v s CANISTE R WEIGH T VARIABLETEMPERATUR ESHE D DIURNA L
3. 5



## 2. 5

1. 5 1 

## 0. 5 h 0 DATA EXTRACTED FROM TESTS CONDUCTED

MAY THROUGH

JUNE 1993 CANISTE R BREAKTHROUG H = SHE D LOS S > VEHICL E BACKGROUN D

(VEHICLE

BACKGROUND

APPROXIMATELY

1 GRAM)

2 GRA M CANISTE R BREAKTHROUG H 

### 8 : C C : Q . * CHRYSLER

TEST DATACOLLECTED

FROM BOTH EPAAND

CARB STRICTER EVAP PROCEDURES o O : 3 : O : C C : (9 o tr J « J L *-* - I I L 2. 4 UTE R S/ N 69 3 

## 116 0 118 0 120 0 122 0 124 0 126 0 CANISTE RCANISTE RWEIGH T (GRAMS ) 

## 128 0 130 0
CHRYSLER

CORPORATION 7 JULY 1903

T JC

O < ! 

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## 131 0 130 0 129 0 128 0 127 0 126 0 125 0 124 0 123 0 122 0 121 0 120 0 119 0 118 0 117 0 116 0 

# CAR B VTDIURNA L SEGMEN T 7 2 HOU R+ 2 4 HOU

R DATAEXTRACTED

FROM TEST CONDUCTED

JUNE 1993 TES T#573CB15/7823031 9 PAS S CA R W/1 6 GA L PLASTI C TAN K 40 % FIL L O F 6. 4 GA L 7 # RV P FUE L 65-10 5 DEQF . CYCL E

BREAKTHROUG H WEIGH T APPRO X127 0 GRAM S PEA K APPRO X2 6 GM S
PEA K 2 4 GM S
PEA K 2 5 GM S 123 8 GM S ©EO T
BACKPURG E APPRO X1 1 GM S BACKPURG E 8 GM S PEA K 2 4 GM S
117 1 GM S ©SO T BACKPURG E 5 GM S CANISTER VAPOR LOSS

(VT SHED) (SHED LOSS - VEHICLE

BACKGROUND

OF 1 GRAM) 0.0 GRAMS 0.0

GRAMS O.O

GRAMS 0.39

GRAMS 

## SOT 2. 4 UTE R CANISTE R S/ N 69 3 

## I 4 8 HOUR S 2 4 HOUR S 7 2 HOUR S DIURNA LELAPSED TIM

E 9 6 HOUR S
CHRYSLER

CORPORATION 7 JULY 1993

T J 0 0