Diesel Engine Lube Filtration
A large proportion of the developed world’s infrastructure can be attributed to the use of the diesel engine. The evolution of the diesel engine has been significant since the very first patented design by Rudolph Diesel in 1892, however the working principle still remains constant. The same can be said of the oil or lube system within current diesel engines. The lube system functions as the central circulatory system to these powerhouses so they keep running at top performance. While the internal demands continue to evolve, the underlying principles remain the same.
Today’s diesel engines are tasked with operating more efficiently whilst leaving a minimal impact on the surrounding environment. These demands continue to drive a large amount of changes to engines and the supporting components. Lube filtration engineers continue to create new technology to keep these lube systems functioning at top performance whilst helping improve the environment through extended oil drain intervals and the introduction of greener materials.
Emission control technologies which include exhaust gas recirculation (EGR), diesel particulate filtration (DPF), and the introduction of the closed crankcase ventilation (CCV) all have a direct impact on the lube system. Today’s oil is tasked to handle more contamination for longer periods of time. A well designed lube filtration system will be engineered up front with overall engine strategy in mind to deliver maximum protection. The benefits of this up front design have resulted in enhanced filtration medias and the inclusion of traditionally separate components into a streamlined system.
Understanding end user requirements is a commitment Donaldson always takes seriously. It is with this in mind that Donaldson strive to offer design flexibility to meet field application needs. Longer life medias along with extended oil drain products, and traditional product offerings, combined provide a solution for every diesel engine application.
Diesel Lube Oil Trends & Changes
Changes in Lube Oil Systems
- Increased EGR rates, acid & soot
- Crankcase ventilation – lower oil consumption, thereby less make up oil added and oil has to work harder
- Improved cleanliness for tighter component clearances
- Typical contaminants
- Design strategies (bypass over-pressure valves, cold flow)
Changes in end user oils
- CJ-4 vs. CI-4 Plus
- Increased levels of fuel dilution due to alternate fuels
- New contaminants due to alternate fuels
- Low SAPS oil compatible with emissions aftertreatment systems
Filtration requirements evolving as a result
- Trend towards “green” cartridge filter
- System approach, integration of components such as oil coolers
- Enhanced protection while maintaining service intervals (bypass or secondary filters, extending service intervals & durable medias)