Pit & Quarry, October 2013
If This Is Your World Is Your Filter Reliable Heavy Duty Lube Fuel Air Hydraulic Coolant and Cabin Air Filtration Designed for the Rigorous Challenges of the Mining World OTLINE s www luberfinermining com 2013 Luber finer by FRAM Filtration An ISO14001 and ISO TS16949 registered company 200 S 4th Street Albion IL 62806 1313 Hotline 800 882 0890 or 618 445 6011 EQUIPMENT FOCUS LOADING HAULING A 1121F wheel loader from Case generate the consistent combustion temperatures required for an effective cooled EGR solution Wheel loader idling is yet another important consideration as it lowers combustion temperatures The lower temperatures ultimately result in higher particulate matter levels The higher levels can be readily addressed with the DPF on a cooled EGR system but that ultimately leads to more frequent regeneration of the DPF More frequent regeneration can also inhibit production and increase maintenance costs SCR technology eliminates regeneration and the associated downtime and hassle Design simplicity lowers long term costs Many decision makers also appreciate the design simplicity of an SCR system which doesnt require a DPF for lower long term maintenance costs An SCR system only requires periodically filling the DEF tank and does not involve any special fuel A warning light signals when the DEF is running low Refilling the DEF tank can be done as part of regular maintenance when checking fluid levels or when refueling Filters in the DEF circuit are usually easy to access and have a maintenance schedule equal to engine oil Additionally SCR equipped wheel loaders will continue to use standard oils without any concern for switching to low ash oils or other more expensive formulations DEF which is only needed in small amounts is also easy to find SCR engines do not require any special fuel As the industry transitions from Tier 4 Interim to Tier 4 Final it can expect to see more wheel loader manufacturers transition to SCR as a solution for machines Based on the workload and machine engineering SCR makes sense Preconceptions about SCR and the hassles of adding DEF will fade away as regeneration becomes a thing of the past as fuel efficiency improves and as wheel loaders perform with strength and without hesitation P Q Brad Stemper is solutions marketing manager for Case Construction Equipment 18 PIT QUARRY October 2013 www pitandquarry com
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