p. 1 

# OAR Box 1147 Prepped by Ollie Stewart

Document

Number: 

# 168 ) IV-E-4 1 Docket Number: 

# A-87-1 1

Printed 4/22/2008 2:42:56

PM Sheet 168 of 242P. 2

4; * '-*
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UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y 

## fl-Bl-rtrt

MA Y2 3 !9 3 AN N ARBOR . MICHIGA N 4810 5 OFFIC E O F AI R AN D RADIATIO N

MEMORANDU

M SUBJECT : Onboar d Meetin g Wit h AP I FROM : Joh

n F . Anderson , Senio r Projec t Manage r Standard s Developmen t an d Suppor t Branc h TO : Publi c Docke t A-87-1 1 In connectio n wit h our briefing t o AP I on Apri l 28 , 198 8 abou t th e EPAonboar d hardware , AP I provide d u s wit h curren t informatio n on two vehicl e system s whic h i t ha s undertake n t o develop . Attache d i s a cop yo f the material s whic h AP I presented , including photograph s o f it s hardware . Attachment sP. 3P. 4P. 5P. 6

### ONBOAR D CONTRO L O F REFUELIN G EMISSION S IMPROVE D SAF E DESIG N

PRODUCT S RESEARC H DIVISIO N EXXO N RESEARC H & ENGINEERIN G COMPAN Y APRI L 28 , 198 8

r> i

## APPROAC H - DESIGN WIT H SAFET YA S OBJECTIV E
• STAR T WIT H PRODUCTION EVAPORATIVE CONTRO L SYSTE M DECREAS E TAN

KVEN T T O ONBOAR DCANISTE RHOS E SIZ E WIT H SATISFACTOR YCONTRO L O F REFUELINGEMISSION S

• LOCAT E CANISTE RI N SAFES T POSITION

INSID E FRAM E

• N O SEAL APPROAC H

• CONFIR

M REGUUTE DEMISSION S AND CANISTE RPURG E

### VEHICL E 198 7 BUIC KLESABR E 

### PFI 3.8 L 1 8 GALLO N TAN K SID E FIL L 1/2 " TAN K

VEN TSEPARAT E

T l C O

## SAFET YISSUE S PARAMETE RSTUD Y

EXPERIMENTAL DESIGN

- PRODUCTION

198 7 BUIC KLESABR E + EVAPORATIV E CONTRO L SYSTE M (ECS ) INCLUDES : SEPARAT E 1/2 " FUE L TANKVEN T 0.057 " ORIFIC E BETWEEN TAN KAND CANISTE R 0.078 " ORIFIC E BETWEEN CANISTE RANDPORTE D MANIFOL DPURG E

- PARAMETER S VARIE D + VEN T HOS E DIAMETER/LENGT H + CANISTE RSIZE/LOCATION + CANISTE RPURG E RATE S

- PARAMETER S NO T CHANGE D + ELECTRONI C CONTRO L MODUL E

- NO SEA L APPROAC HP.1 1

V. o d o H ( 0 V ) H z u i O z H

_ l u U . u o a

ctf > 1

1 1

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CV J C M o o efP

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v o t o o

o V O ^ 1 P O V O i n I H o i H Z XH o tn 3 U J U l 1 - 

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U J U J o H U . H ( A U KU J Z O Z H H O mo o o o

1 1 1 o a a z U J H > » - o </ > Z H U X tt U J UJ Z K - H Z U J 

### 8 * H tt C O < H a z z < o u a U

J ( 0 o z ¥• H X U mi. z I/ ) < O H U J K - 1 3 tt U L L o H H U mm a o a e a o H H X U J * z < 1 -

- 1 - H X U J

_ CS J u ^ - ^ . O >> . i H 

### 2 t H a c o U i o O f U l X HH 3 U i N H O 0 U I (/ ) I o » - z UI 0 0 P O C M C M 0 0 i n o o i n C M

tt U l » - V. H < o C D C 9 -a i n co u i oc mS ir.

ro u i OC U l i n P O U l

a u i C M P O i n v o co lSTE P NO . 8 9 1 0 1 1 1 2 1 3 CANISTE R

ER E 3.5 L ER E 3.5 L ER E 3.5 L ER E 3.5 L ER E 3.5 L ER E 3.5 L VEN T HOS E SIZ E

IN . ID 3/8 " 1/2 " 3/8 " 3/8 " 5/16 " 1/4 " RESULTS (CONTINUED )
OTHE R

MOVE D CANISTE R T O TRUN K AVERAG E FUE L RAT E GP M 9 1 0 9. 5 9. 6 9. 5 9. 3 REFUELIN G EMISSION S

GRAMS/GA L
BUR P 0.1 9 0.0 6 0.0 5 0.0 4 0.0 6 % CONTRO L

96 1 99 % 99 % 99 % 99 %
MOVE D CANISTE R INT O TAN K

# PRINCIPA L ELEMENT S O F

ENHANCE D ONBOAR D SYSTE M

Standar d Fillpip e Wit h Ven t Reroute d t o Caniste r Purge d H C Vapor s T o Engin e Openin g Fro m Tan k an d Rollove r Valv e Enlarge d Charcoa l Caniste r

H C Vapor s

2676-0 2 T lSTE P NO . 1 4
1 5 1 6 1 7 CANISTE R

5 L TANK
5 L TAN K 5 L TANK 5 L TANK VEN T HOS E SIZ E

IN . I D 5/16 " 5/16 " 5/16 " 5/16 " RESULTS (CONTINUED )
OTHE R REMOVE D VAPO

RLIQUI D SEPARATO

R ADDE D ROLLOVERVALV E AVERAG E FME I RAT E GP M 9. 5 9. 6 9. 4 9. 5 REFUELIN GEMISSION S

GRAMS/GA L 0.0 7 0.0 8 0.1 7 0.1 0 % CONTRO L

99 % 98 % 97 % 98 % 

# L
X IREGULATED EMISSION S

BAS E CA R

G M CANISTE R 1/2 " HOS E ER E 3.5 L CANISTE R 5/8 " HOS E ER E 3.5 L CANISTE R 5/16 " HOS E - CLOS E COUPLE D - STOCKPURG E 5 L TANK/0.078 " ORIFIC E MOVE D PURG E LOCATIO N 

### C O G/ M 2.02 9 2.10 7 1.51 7 1.81 4 1.63 0 1.45 4 1.76 5 1.49 5 H

C G/ M 0.27 1 0.29 1 0.23 4 0.25 2 0.25 9 0.27 1 0.29 5 0.24 7 NO

X G/ M 0.27 0 0.28 4 0.31 9 0.27 3 0.27 1 0.28 3 0.29 0 0.22 5 DIURNA L

G/ T 0.2 4 0.4 2 0.4 8 0.1 0 0.3 6 0.94 * 0.2 0 0.3 5 H O T SOA K

G/ T 0.2 7 0.2 2 0.1 9 0.1 6 0.1 7 0.2 1 0.1 6 0.3 4 TOTA L EVA P G/ T 0.5 1 0.6 4 0.6 7 0.2 6 0.5 3 1.1 5 0.3 6 0.6 9

* NE W PROPOSE D PROCEDUR E

## PURG E

G M DESIGN

- PORTE D VACUU

M WIT H 0.078 " ORIFIC E

- SOLENOI D VALVE DUT YCYCL E MODULATE D + ABOV E 5 MP H + COOLAN T TEMP . >1780 F + 1 MINUT E LA

GAFTE RENGINE O

N + THROTTL E POSITION

SENSORVOLTAG E >0.7 5

- PURG E RATE S 5 0 MP H 1. 2 LP M 4 0 MP H 0. 5 LP M 3 5 MP H 0 LA- 4 1. 9 LP M

- 11-1 6 GRAM S PURGE D IN 1 1/ 2 LA-4' S

## PURG E (CONTINUED )

MODIFIE DDESIG

N

- SAME SOLENOI DVALV E

- MOVE DPURG E FRO

M PORTE DPOSITION

T O PC V LINE MANIFOL D VACUU M PURG E RATE S ORIFIC E SIZ E 0.078 " 0.059 " 0.052 " 0.046 " 5 0 MP H

13. 4 11. 1 8. 4 6. 5 LA- 4

4. 2 (3.5 ) 2. 6 (2.0 )

## PURG E FLOW RATES BUIC KLESABR E

S O MP H PURQ E FLO

W RATE , cf m

0.0 6 o.o e 0.0 7 ORIFIC E SIZE . INCHE 8

—5 0 MP H -+ - LA- 4 o.o e

T J J o

## CANISTE RPURG E FT P EMISSION S TEST S (0.078 " ORIFICE ) SATURATION

O F CHARCOAL 22 0 GRAM S I N

3 REFUELING S 6 GRAM S H C IN

SHE D U S T REFUELIN

G92 % CONTRO L CHARCOAL WEIGH T HISTORY

STE P STAR T LA- 4 PR E CONDITIONIN

G 1 HOU RSOA K OVERNIGH T SOA

K- 1 5 HOUR S DIURNAL TES T TAILPIP E EMISSION S HO T SOA KTES T GAIN/LOS S GRAM S 0 -3 8 0 + 7 +1 6 -1 9 TOTAL

GRAM S 0 -3 8 -3 8 -3 1 -1 5 -3 4

C OABILIT YT O ABSOR B H C gram » 

# BUIC KPURG E DRIVEDOW N

16 0 14 0 12 0 10 0 8 0 6 0 4 0 2 0 2 3 4

SIMULATE D DA

Y 1 1 • 1 1 1 1

\yr ; ! '; i i / ! i ! ! ! i / i i i ; I i / \ t

i i ; ; •/

! r T- i f t / • : i i • i / i ! I ' i J / i i i i i i / I i i i I i 6

1 8IMULATE D DA

Y- 1 DIURNA L •3 LA-4' 8 WIT H 1 HOU R HO TSOA KC O

E o o tn x > <

. O 11 0 10 0 9 0 8 0 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 

### AVERAG E CANISTE R PERFORMANC E Dodg e 

# ,yYYY^

#•1 1 • Dail y Tes t Sequenc e i s 3 LA- 4 Cycle s Space d Wit h 1 Hou r Ho t Soak s Followe d B y On e Diurna l Tes t

3 Da y 1 ' Day 2 ' Day 3 ' Da y 4 ' Da y 5 ' Day 6 ' Da y 7 ' Day 8 ' Da y 9 ' JZ t - m* a 

### a C D 

# j

h o

## VEHICL E 198 8 FORD TAURU S MPF I 3.0 L 1 6 GALLO N TAN K SID E FIL L 1/2 " TAN KVEN T SEPARAT E

## TAURU S REGULATE DEMISSION S

C O G/ M


### 1.41 0 1.43 4 1.25 4 1.40 5 H

C G/ M


### 0.17 4 0.18 0 0.19 4 0.18 3 NO

x G/ M


### 0.45 7 0.34 6 0.37 2 0.37 4 CO ?

G/ M


### 410. 6 409. 0 408. 7 413. 2 DIURNA L

G/ T HO T SOA K

G/ T
BAS E VEHICL E 

### 0.0 7 0.0 7 0.1 3 0.1 4 0.1 2

0.1 0 0.1 2 0.1 2 TOTA L

G/ T


### 0.1 9 0.1 7 0.2 5 0.2 6 COMMENT S

• DR YPROCEDUR E

SAT' N PROCEDUR E

### TAURU S REFUELIN G DAT A
G/GA L


## 5.0 2 5.1 2 4.7 2 GPM

BAS E VEHICL E 

## 9. 7 9. 5 % CONTRO L

- - 

### AVG . 4.9 5

## TAURU S PURG E DAT A

DIURNA L NO . 1



## 2 3 4 5 STARTIN GWEIGH T PRECONDITIONIN GLA- 4 OVERNIGH T SOAK DIURNA L TES T TAILPIP E EMISSION S HO T SOAKTES T BAS E VEHICL E RELATIV E EC

S CANISTE RWEIGH T GRAM S



## + 2 0 + 1 +2 1 + 1 + 3 + 5

0 + 2 +2 2 0 + 2 1 9

3 9 5 9 7 4 7 9 7 9 3 4 3 6 5 4 2 0 2 1 4 3

5 9 7 6 8 1 8 1 3 8 4 1 5 8 2 3 2 4

## CONCLUSION S

• 1/2 " HOS E FRO

M TH E TANKT O ONBOAR DCANISTE RI S SUFFICIEN T I F TH E ONBOAR DCANISTE RI S LOCATE DIN TH E ENGIN E COMPARTMEN T • 1/4 " HOS E FRO

M TH E TANKT O ONBOAR DCANISTE RI S SUFFICIEN T I F TH E ONBOAR DCANISTE RI S LOCATE DIN TH E TRUNK NOTE : TH E PRODUCTION

TAN KVEN T I S 1/2 " FUTUR E WOR K BUIC KLESABR E • DETERMIN E REGUUTE DEMISSION S WIT H CANISTE RIN TH E TANK • DETERMIN E CANISTE RPURG E CHARACTERISTIC S FORDTAURU S • BAS E LIN E VEHICL E • MODIF YVEHICL E

- CANISTE RIN

FRAME MEMBE R