2004 – China RailwaysDSS was applied to 58 diesel locomotive engines (type DF8B) without disassembly.
After covering 300,000 km, three DSS-treated engines and three untreated (control) engines were disassembled and inspected.
Measured component dimensions were compared with the nominal values specified in the technical drawings.
The results demonstrated a significant reduction in wear rates, as follows:
- Cylinder inner diameter – 7.2× reduction
- Piston diameter – 4.8× reduction
- Connecting rod bearing inner diameter – 3.2× reduction
- Piston pin diameter – 6.2× reduction
- Crankshaft journal diameter – 3× reduction
- The remaining 55 treated locomotives continued operation without any need for repairs or performance issues.
1998 – St. Petersburg, Russia, Admiralty ShipyardsDSS was applied to two 6DR 30/50-3 diesel engines installed on a tugboat, both exhibiting varying degrees of wear, without disassembly or interruption of operation.
Compression and combustion pressures were measured in all six cylinders of each engine, before and after DSS application.
As a result of DSS treatment, compression increased by an average of 4.8% in the newer engine and 15% in the more worn engine, while combustion pressure increased by 11%.
Post-treatment values matched those of factory-new engines.
Additionally, the crankshaft bearing temperature decreased from 60°C to 45°C.
2000 – Moscow, Russia, NAMI (Scientific Automobile and Motor Institute)DSS was applied to three urban transport minivans equipped with gasoline engines and approximately 40,000 km mileage.
Results showed a 40% reduction in CO emissions, a 16% reduction in NO emissions, and no change in CH levels. Fuel consumption under city driving conditions decreased by 3%.
1998 – Kharkiv, Ukraine, Malyshev Motor EnterpriseUsing a specialized test bench, pairs of friction components made of dissimilar materials (steel/copper, steel/bronze, steel/brass) were tested while operating either without lubrication or with various grades of engine and transmission oils used in locomotive diesel engines. After 30 minutes of testing under variable load, a reduction in friction ranging from 10% to 54% was recorded.
2003 – Chita, Russia, Trans-Baikal RailwayDSS was applied to 10 TEM-2 locomotives equipped with PDG-1M diesel engines. Fuel consumption and effective engine power were evaluated using a rheostat test bench both before and after treatment.
Following DSS application:
- Average compression increased by 2.0–2.5 kg/cm²
- Combustion pressure increased by 5–6 kg/cm²
- Effective engine power increased by 8–10%
- Fuel consumption decreased proportionally