OLS : Record

RECORD NUMBER: 33 OF 130

Main Title

Emission testing of 1974 Pontiac V-8 with defective thermal vacuum valves.

CORP Author

Environmental Protection Agency, Ann Arbor, MI. Technology Assessment and Evaluation Branch.

Publisher

Environmental Protection Agency, Office of Mobile Source Air Pollution Control, Emission Control Technology Division, Technology Assessment and Evaluation Branch,

Place Published

Ann Arbor, Mich.

Year Published

1976

Report Number

EPA-AA-TAEB 76-21

Stock Number

PB80-159478

OCLC Number

780443690

Subjects

Automobiles; Exhaust emissions; Air pollution control; Thermostatic valves; Fuel consumption; Distributors; Carburetors; Pontiac automobiles; Motor vehicles(1974 models); Air pollution control equipment

Subject Added Ent

Air--Pollution--United States.; Automobiles--Motors--Exhaust gas.; Air quality--Standards--United States.; Pontiac automobile.

Internet Access

Description	Access URL
	http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9100X4UN.txt

Holdings

Library		Call Number	Additional Info	Location	Date Modified
ELCD		EPA AA-TAEB-76-21		NVFEL Library/Ann Arbor, MI	03/26/2012
NTIS		PB80-159478	Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.	NTIS	06/23/1988

Collation

11 p. : ill., charts ; 28 cm.

Abstract

The EPA became aware that there were problems with the Thermal Vacuum Valve (TVV) installed in 1974 Pontiac V-8's. To confirm the existence of the problem, functional tests were conducted on TVV's collected from in-service Pontiac vehicles. These tests consisted of applying a controlled vacuum to the valves while raising their temperature in a stepwise fashion and observing when they actuated. The majority of the valves tested failed to meet their design specifications. In order to quantify the effect of the failed valves on emissions, exhaust emissions tests were conducted with the TVV's installed in a 1974 Pontiac. However, only a limited test program was undertaken. This report describes the exhaust emission test program and presents the data and results. The conclusions drawn from these tests are necessarily of limited applicability. A complete evaluation of the degradation of the emission control system caused by defective TVVs on the 1974 Pontiac V-8's requires a much larger sample of test vehicles than is economically feasible in in-house test projects conducted by EPA.

Notes

Cover title. "June 1976." "EPA-AA-TAEB 76-21."

Corporate Au Added Ent

United States. Environmental Protection Agency. Office of Mobile Source Air Pollution Control. Emission Control Technology Division. Technology Assessment and Evaluation Branch.

NTIS Title Notes

Technical rept.

PUB Date Free Form

Jun 76

Category Codes

13F; 85H; 68A

NTIS Prices

PC A02/MF A01

Primary Description

200/05

BIB Level

Control Number

323776829

OCLC Time Stamp

20120319143600

Cataloging Source

OCLC/T

Language

eng

Origin

OCLC

Type

MERGE

OCLC Rec Leader

01148nam 2200277Ka 45020

OLS : Record

RECORD NUMBER: 33 OF 130

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