73-14
Evaluation of the Extractor Device
           January 1973
        R. Bruce Michael
    Test and Evaluation Branch
  Environmental Protection Agency

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Background

Emission Control International of Houston, Texas, requested
that the Test and Evaluation Branch conduct a program to
determine the emission control potential of their extractor
device.  The company presented test data conducted at Automotive
Research Associates (ARA) which indicated significant reductions
of HC and CO emissions.

Device

The extractor device is a thermal reactor which also acts as
a muffler and replaces the stock muffler.  It was presented
to us welded to an exhaust system.  Replacement of the stock
exhaust system with the extractor device took about one-half
hour.

Test Program

A 1970' Plymouth Valiant, 225 CID, from the EPA fleet was used
for the test.  Six tests were conducted, three with the stock
exhaust system ^(baseline) and three with the extractor exhaust
system.  All testing was performed in accordance with the 1975
Federal emission test procedure.  Full details of this procedure
are found in the July 2, 1971, Federal Register, Volume 36,
Number 128, Part II.

All tests were conducted using the- standard dynamometer inertia
loading for the Valiant which is 3000 pounds.  Test fuel was
Indolene Clear (an available lead free standard fuel).

Test Results

The test results are presented in the Appendix of this report.
These results are summarized below.

                Summary of Emission Results
                  % Change from Baseline

                                Extractor

                  HC               0   change
                  CO              11%  increase
                  COo              5%  increase
                  NOx              9%  decrease

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Conclusions

The extractor system caused no significant changes in emissions
It appears that higher back pressure from the extractor caused
a slight reduction in oxides of nitrogen.

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                      APPENDIX
Extractor Test Program -  1975 Federal Test Procedure
Test
No.
Baseline


average
Extractor



16-
16-
16-
16-
16-
16-
149
152
155
140
141
147
HC
gpm
2.
2.
2.
2.
2.
2.
2.
25
01
05
10
05
04
19
CO
gpm
27.
26.
26.
26.
28.
28.
31.

27
23
59
65
87
97
17
C02
gpm
407.
403.
418.
409.
380.
389.
394.

7 3
74
42
96
41
69
58
\r
CT
6
6
6
6
-~n
5
5
5
Ox
"HI
••> i
.44
. 35
.54
.58
.86
.82
     average               2.09     29.67     588.25      5.75

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