Soot is harmful to engines, and if left to accumulate it will impact productivity. Techenomics’ oil analysis and fluid management expertise is an important instrument in overcoming soot build up.

At excess levels, soot causes abrasion and high wear in engines and mechanical components. If it forms clumps, it can result in valve train, ring and liner wear. It can also thicken the oil and increase viscosity, which inhibits oil flow.

Techenomics’ oil analysis ascertains how much soot is present. By trending the analysis results over time, Techenomics can point to the cause of the soot build-up.

Soot is most commonly formed from the incomplete combustion of a hydrocarbon and is a particular problem with many diesel engines.

Techenomics CEO Chris Adsett says there are some aspects about the impacts of soot that need further investigation and, subsequently Techenomics is developing improved analysis and treatment techniques.

Techenomics’ technology and product development manager Eka Karmila says it appears the adsorption of soot on metal surfaces prevents the adsorption of anti-wear additives and their subsequent decomposition to form anti-wear films.

“Soot can also adsorb anti-wear additives in the oil phase, reducing the concentration of the additives in the lubricant. Consequently, less anti-wear additive is adsorbed at the contact interface.

“In some studies, it has been suggested that soot in the oil can accumulate at the contact inlet, restricting oil supply to the contact.

The absence of a lubricant film at the contact results in high wear due to the metal-on-metal contact,” said Eka Karmilla.

“It is believed that soot increases wear through directly abrading the metallic parts of the engine or by abrasion of anti-wear tribofilms formed on surfaces.

“Removal of the anti-wear tribofilm exposes the underlying metallic surface to wear.”

Chris Adsett says these are the types of issues that the company’s research and development work is striving to address.

“Solving these soot issues will give clients better life from their oil, thereby improving fuel consumption and preventing costly equipment maintenance or even breakdowns”, said Mr Adsett.

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