Summary of Environment Canada's ERMD

(Note: if you would like to view the full report prepared by Environment Canada, please e-mail us.)

This is a report of the evaluation testing conducted by Environment Canada's ERMD on a diesel fuel additive and a lubricating oil additive for heavy-duty diesel engines. The two after-market products were provided by Pathfinder® Lubricants Ltd. of Coe Hill, Ontario.

The purpose of the testing was to evaluate the beneficial effect on pollutant emissions by the additives. The basis of comparison was the exhaust emission results obtained with the test diesel engine in a baseline configuration (OEM fuel and lubricating oil).

A program was arranged with a series of test engine configurations - baseline fuel and oil, fuel additive and baseline oil, baseline fuel and oil additive, and finally both fuel and oil additives applied. The emission testing of each configuration consisted of three 'hot start' transient tests that conformed to U.S. EPA emission test protocol for heavy duty engines.

Comparison of the emission results by means of a statistical analysis revealed significant differences (Student 't' test 95% confidence level) between the initial baseline and the additive configurations. The most favourable comparison was found with both additives in place for the test engine's operation. In this test confirmation. the exhaust mass emissions of CO. NOx. THC. and particulates were reduced bv 6.95%. 7.06%. 26.72%. and 8.47% respectively.

The proprietary chemistry of the additives does not allow for any explanation as to the observed results. However, the Pathfinder states that these products are a 100% petroleum derivative and that they cause "a further increase in compression beyond what is excepted as the norm."

Testing of these products was done under 'ideal conditions' in a certified laboratory on a secure, well-tuned engine over a short time frame. The statistically significant results obtained are particular to the test engine and should not be taken out of the test program's context.


#97-320
DD SERIES 60
TEST CONFIGURATION
DATE POWER [BHP] EPA - HD ENGINE TRANSIENT EMISSION TEST
BASELINE - INITIAL 9 Dec 97 61.9 1.62 549.4 8.90 0.33 0.295
9 Dec 97 62.2 1.64 555.6 8.84 0.31 0.280
9 Dec 97 64.0 1.52 545.4 8.81 0.32 0.274
Average   62.7 1.59 550.1 8.85 0.32 0.283
Standard Deviation   1.168 0.061 5.132 0.044 0.010 0.011
 
FUEL ADDITIVE 9 Dec 97 59.4 1.52 556.5 8.75 0.35 0.272
9 Dec 97 62.6 1.51 549.4 8.38 0.38 0.254
9 Dec 97 63.0 1.47 545.0 8.32 0.35 0.263
Average 61.7 1.50 550.3 8.49 0.36 0.263
Standard Deviation 1.990 0.029 5.806 0.234 0.018 0.009
% Difference -1.62% -6.00% 0.03% -4.12% 14.53% -7.10%
Variance of comparison, 2.663 0.002 30.025 0.028 0.000 0.000
t Distribution (n=4) 0.763 2.461 -0.036 2.649 -3.897 2.434
Statistically significant (95% confidence)? No No No No Yes No
 
OIL ADDITIVE 10 Dec 97 64.0 1.50 539.5 8.40 0.24 0.282
10 Dec 97 60.8 1.50 536.6 8.46 0.27 0.266
10 Dec 97 63.6 1.51 532.6 8.35 0.23 0.256
Average 62.8 1.51 536.2 8.40 0.25 0.268
Standard Deviation 1.731 0.006 3.482 0.052 0.021 0.013
% Difference 0.21% -5.56% -2.53% -5.08% -22.33% -5.30%
Variance of comparison, 2.180 0.002 19.229 0.002 0.000 0.000
t Distribution (n=4) -0.108 2.507 3.888 11.455 5.249 1.515
Statistically significant (95% confidence)? No No Yes Yes Yes No
 
OIL & FUEL ADDITIVE 11 Dec 97 61.6 1.48 550.8 8.13 0.22 0.265
11 Dec 97 63.1 1.46 542.5 8.31 0.22 0.253
11 Dec 97 64.1 1.51 543.4 8.24 0.26 0.259
Average 62.9 1.48 545.6 8.23 0.23 0.259
Standard Deviation 1.260 0.028 4.534 0.091 0.023 0.006
% Difference 0.43% -6.95% -0.83% -7.06% -26.72% -8.47%
Variance of comparison, 1.475 0.002 23.447 0.005 0.000 0.000
t Distribution (n=4) -0.269 2.857 1.151 10.710 5.795 3.336
Statistically significant (95% confidence)? No Yes No Yes Yes Yes

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