P. 1 

# OAR Box 1147 Prepped by Ollie Stewart



### Document

Number: 

# 227)IV-E-10 1 Docket Number: 

# A-87-1 1

Printed 4/22/2008 2:42:59 PM

Sheet 22 7 of 242^ P. 2 

## A-S'M I !'• « ^

UNITE D STATE S ENVIRONMENTA L PROTECTIO N AGENC Y \^i^ /

AN N ARBOR . MICHIGA N 4810 5 OFFIC E O F AI R AN O RADIATIO N 

## JU N 2 9 199

3 » ' • 

## i i - 7 199 3 MEMORANDU M SUBJECT : Meetin g wit h AAM ARegardin g Onboar d Refuelin g

Tes t Procedure s 

### %&^CA> 

## flua^c^f 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 Jun e 29 , 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 y 27 , 1993 , 5 8 F R 30731 ) . Th e meetin g wa s hel d a t th e EP Ala b i n An n Arbor . 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 potentia l change s i n th e tes t procedur e an d ho w thes e change s coul d potentiall yaffec t syste m desig n an d in-us e contro l effectiveness . 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

### EPA/Industr y Meetin g 2 9 Jun e 199 3 Attendanc e Lis t P. 3

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# USCAR LEP - OBD II EVAP PROPOSED

TESTPORT

CONFIGURATION MEETING DATE APRIL15, 1993 

## DRAFT

SEALING

CAP TESTPORT ALTERNATE LOCATION SERVICE ACCESSIBLE ENGINE N/C PURGE SOLENOID FUELTANK

PURGE AIR FILTER SERVICE

ACCESSIBLE
TESTPORT

TO BE USED FOR:

- CERTIFICATION

- COMPLIANCE -I/M 240**

- SERVICE

* * CARBON CANISTER N/O CANISTER

VENT SHUTOFF

SOLENOID

USCAR1 ** SEALING

CAP PLACED

ON CANISTER

FRESH AIR PORT 3/4" O.D. W/NON STANDARD FINE THREAD GREG RICH GM NAO ENGINEERING CENTER CDC. WARREN

u -p .P. 5



### ORV RTES T PROCEDUR

E PROPOSA

L EP A SENSITIVITIES :
• N o "gaming/nibbling " • Protec tEVAPfo rshor

ttrip s • Saturatio n caniste rloading • Drain , 10 % fill prio rto refueling • In-us e testin g burden • Resource efficient MANUFACTURE

RDESIRES :
• Integrated systems (safety , cost , weight ) • N o tailpip e emissions penalty , (beyon d Stric tEVAP ) • N o caniste ro rsyste

m disconnects/connects , especially in-us e • Resource efficient 

### FEATURE S O F PROPOSE D PROCEDURE :
• Doe s notpenaliz e integrated systems • Performanc

e based camsterloading approximatel y equivalen

tto curren

tStric t EVA Ploading • Refueling tes tdrives caniste rsize ; therefore , exces s capacit y availabl e fo r evaporative emissions • Provides » 85 % refueling fill • Does notrequir

e caniste rorsyste

m disconnects/connect

s • Facilitate s in-us e testing :

- All caniste rconditioning accomplished vi a "tes tport "

- Does notrequire unique ambien to rfue l temperatur

e control

- Avoids intrusio n int

o vehicl e syste

m • Commo

n procedures , excep tfo r20 % fill fo rrefueling , throug h th e exhaust emissions test . • Removes pervers e incentive to minimize caniste rsize . • Delete s lon g soak (stabilization) prio rto refueling • Refueling sequence represent s norma l condition (afterdrive) America n Automobil

e Manufacturer

s Associatio

n 6-28-9 3 slg/orvrtest.pr

oP. 6



### DRAF T PROPOSE D

EVAPORATIVE/REFUELIN G TEST S DRAF T

*



## i CANISTE R PRECONDITIONIN Q PURG E 30 0 BE D VOLUM E LOA D 5 REA L TIM E DIURNAL S

1 . .. __ COL D STAR T EXHAUS T TES T

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• • HO T SOA KTES T 68- 6 6 T AMBIEN T • 

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# I I l HOU R MA X 

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