In a recent press release, Hengst noted that its oil-coolant module featured in the Detroit DD15 Gen 5 engine provides enhanced filtration properties that result in extended service intervals and offers an extremely high functional density and brings about significant savings in fuel.

Equipped with an optimized stack filter, the new oil-coolant module engineered by Hengst Filtration is used in a number of engines. The high functional density of the module comprises oil filtration, oil-water-heat management, water pump and, unlike the previous model generation, an oil pressure regulating valve.

By applying smart interface integration, Hengst was able to reduce the number of parts to a minimum, the company noted. Even the oil thermostat has been incorporated directly into the housing. Overall, the reduction in parts has made the module ten percent lighter than the predecessor model. Better yet, the topology-optimized design provides for greater sturdiness against pressure and pulsation and improves differential pressure (Delta P) performance by 30%.

The extremely low temperatures that dominate the winter months in certain parts of North America cause the consistency of the engine oil to turn exceedingly thick and viscous. When it impacts the filter, this highly viscous oil generates an enormous Delta P. The latest generation of the Hengst stack filter has made it possible to achieve a significant increase in oil differential pressure. This causes the filter bypass valve to open later, resulting in a considerable boost in filtration performance.

Hengst found the solution by developing the stack filter with its partially synthetic medium. Special intermediate plates embedded in the filter insert shorten the pleats, giving a significant boost to stability. At the same time, these plates keep the pleats open, thus keeping differential pressure and filtration performance at optimum levels.
This most recent module generation combines a reduction in fuel consumption with significantly extended service intervals.