74-20 AWK
       AN EVALUATION OF THE BOSE
AUTOMOBILE ANTI-AIR POLLUTION DEVICE
             December 1973
       Test and Evaluation Branch
   Emission Control Technology Division
      Environmental Protection Agency

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Background

The Washington office of EPA was contacted by Mr. R.K. Bose
who requested that his device be evaluated by the Test and
Evaluation Branch of MSAPC, Ann Arbor. Mr. Bose presented
test data conducted at Olson Laboratories which detailed
the emission levels obtained from a vehicle equipped with
his device. Mr. Bose alleges that his device causes a 75%
reduction in exhaust pollutants coupled with a 25% improvement
in fuel economy.

Device

The device was described by the inventor as a "...mechanical
exhaust gas refining device," the exact workings of which
were not revealed due to the patent status of the device.
The device recycles "refined" combustion gases back to the
inlet of the carburetor for reburning. Additional air was
supplied by means of a blower to achieve a lean mixture over
all engine speeds. No changes were made to the basic ignition
timing while minor enleanment changes were made to the
carburetor settings. Replacement of the device with a stock
system took approximately two hours. The inventor stated that
the device contained no precious metals and could be manufactured
utilizing present technologies for a cost of $100-150.

Test Program

A 1965 Ford Fairlane, 200 CID, supplied by the inventor
was used for the test.  Three valid tests were conducted;
one with the device installed and two with the stock
exhaust system installed. All testing was performed in
accordance with the 1975 Federal emission test procedure
as outlined in the November 15, 1972, Federal Register,
Vol. 37, Number 221.

All tests were conducted using the standard dynamometer
inertia loading for a Fairlane which is 3500 pounds. Test
fuel was Indolene Clear.

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

                                  Bose Device

                HC                   9% decrease
                CO                  61% decrease
                CO2                  0% change
                NOx                  1% increase
                Fuel Economy         7% improvement
                Aldehydes           64% increase

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                           -2-
Conclusions

Application of this device resulted in a reduction of hydro-
carbons and carbon monoxide emissions with no effect on oxides
of nitrogen. These reductions are consistant with enleanment
techniques, except that oxides of nitrogen did not significantly
increase.

Application of this device resulted in a modest increase in
fuel economy.  Aldehyde measurements indicated an increase
in aldehydes with the use of this device.

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                        APPENDIX
w/Bose device
Grams per mile
Test No.
16-906
Baseline
16-910
16-922
Avg.
Date
12-6
wo/device
12-7
12-10

HC
3.

3.
3.
3.
41

68
79
73
CO
- 14

44
29
37

.4

.6
.5
.0
CO 2
456

440
473
456
NOx
.3

.6
.3
.9
3

3
3
3
.75

.65
.80
.72
MPG
18.

17.
16.
16.
1

0
7
85
% Reduction
                    8.5
        61.0
  + .8%
Aldehyde Results

Test No.     PPM

16-910       3.9244

16-906       6.4452
        gin/mi

        0.1507

        0.2474
wo/device

 w/device
7.4%
improvement

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