These tests were conducted at Terminal Railroad Switch Yards in East St. Louis, Missouri to demonstrate the particulate reduction in diesel locomotive engines (Engine type: General Motors AMD 12 cylinder 645E). The term “Notch” indicates the fuel setting (Notch 8 being the highest).

Locomotive # 1513

Date Setting Front Stack Rear Stack Setting Front Stack Rear Stack
5/10/01 Notch 6 20.4 2.9 Notch 8 5.9 10.2
8/01/01 Notch 6 0.5 1.2 Notch 8 2.2 3.8
Reduction 19.9 1.7 3.7 6.4
% Reduction 97.50% 58.60% 62.70% 62.70%

Locomotive # 1230

Date Setting Front Stack Rear Stack Setting Front Stack Rear Stack
6/07/01 Notch 6 4 4.4 Notch 8 6.9 13.6
8/01/01 Notch 6 2.1 2.2 Notch 8 4.9 7.4
Reduction 1.9 2.2 2 6.2
% Reduction 47.50% 50.00% 29.00% 46.60%
Average % Reduction 52% 31% 38% 40%