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.
DD SERIES 60
|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|
|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|
|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|
|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|
|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|