Heavy Duty Trucking, July 2015

Oils Filtration from using CJ 4 oil For example a PC 11A oil with a HTHS viscosity rating of less than 35 cP will have basically the same fuel economy improvement over a 15W 40 CJ 4 But a PC 11B oil such as a 10W 30 rated 29 32 cP HTHS will achieve an even greater fuel economy improvement over a current 15W 40 and a PC 11A 15W 40 PC 11B SAE 10W 30 oils will also provide a fuel economy improvement over a PC 11A 10W 30 And each new API oil he adds no matter whether it is PC 11A or PC 11B must meet the same wear performance requirements which will include improved oxidation control vs current CJ 4 oil Daring to look down the road a piece at what may drive development The media will be the message Engine hardware changes being driven by the push to decrease GHG emissions and fuel consumption will increase the heat load on engine oil points out David Cline global oil filtration product manager for Parker Racor The new PC 11 engine oils are being designed to protect the engine components from increased temperatures as well as the load but they must also be lower in viscosity to meet the fuel economy requirements he points out The new engine designs will challenge the current filter media efficiency and capacity requirements when it comes to component protection and oil drain intervals he continues Changes in the filter elements themselves will be needed to maintain clean lube oil for the engine manufacturers suggested drain intervals per application Currently he explains oil filtration medium comes in many performance levels of cellulose synthetic and glass fiber combinations with the efficiency range rather narrow In the future he says these combinations will be tailored directly to the engine filtration requirements to maintain higher efficiency throughout the operating cycle and capacity needed to meet oil drain intervals targeted by engine makers Filtration must offer more capacity and tighter efficiencies to protect engines given the ever increasing demands on heavy trucks says Donald Chilton vice president product management WIX Filters Our engineers are working on advanced filter media designs in partnership with media manufacturers to meet new requirements Fuel filters are already going to low micron highly efficient media Air filters are advancing the same way as well Most of these products are already on the Tier 4 engine platforms Roma Fatima lube filtration product manager for Cummins Filtration points out that lower viscosity oils can affect how a filter does its job To take advantage of the lower flow restriction inherent with PC 11 oils she advises Cummins Filtration has begun configuring lube filters with our patented of a PC 12 category Shells Whitacre remarks that its never too early to be thinking about that as they take time The stake in the ground is that the GHG rules will continue to become more stringent Also were seeing now that engine soot levels are lower than 15 or 20 years ago So maybe we will look at how much soot control in the oil is still needed NanoNet nanofiber media The design of these non woven nanofibers features an increase of void space or pores within the media structure which allow more liquid to pass through than conventional media types Fatima explains that the nanofiber media helps further lower the flow restriction created at the filter during cold starts as well as when oil oxidation occurs or when there is higher contamination due to extended service intervals But the low flow restriction is not sacrificed at the expense of particle removal as NanoNet is very efficient at removing the particles most detrimental to an engine Media formulations have to be compatible with higher operating temperatures and lower viscosity means oil will be thinner says Veli Kalayci director engine liquid products for Donaldson As a result smaller particles could have a greater impact cause more damage and create increased wear To that end tighter higher efficiency filtration will likely be needed to prevent this damage and wear He also points out that the impact of new lowerviscosity oils on drain intervals will be determined as newer engines make their way into testing and eventually into use In filtration Kalayci explains its critical to offer the best balance between filtration efficiency restriction across the filter and filter capacity life all of which have to be managed under dynamic conditions and with the right compatibility between materials and the application environment Kalayci notes that new media formulations will come into play For example Donaldsons Synteq XP is used in hydraulic fuel and crankcase ventilation applications and it offers a new path for even higher performance for lube oil filtration Cutaway of Fleetguard LF14000NN lube filter reveals that its NanoNet media consist of five layers The nanofiber layer has the smallest fibers which Cummins Filtrations says provides the optimum in filtration efficiency capacity and cold flow ability PHOTO CUMMINS FILTRATION 74 HDT JULY 2015 www truckinginfo com