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Gearcase Passive Filtration

Company: Wabtec

Major(s):
Primary: ME
Secondary: IE
Optional: ESC, MATSE

Non-Disclosure Agreement: YES

Intellectual Property: YES

Develop robust solution which removes debris from oil and quarantine it away from bearing and gears. Quarantined area to be cleaned when gearcase is opened for overhaul maintenance, approximately every 1-2 years. Review Wabtec Gearcase ASM drawings including gearcase top, gearcase bottom, gears, and related components to determine available space for the new assembly Recommend validation activities for design demonstration Analysis must consider all application needs – Duty Cycle, Low & High Speed, Shock, Thermal, multiple angular positions of TM Recommend maintenance cycle, target maintenance interval is > 2 years Preliminary requirements of gearbox filtration system: – Contained within existing gearcase – Any filters must not require maintenance prior to overhaul – No motors or other powered devices – Quarantines debris away from bearing and gear mesh – Allows oil to adequately flow within the gearcase to lubricate bearing & gears Stretch Goal – Guide oil directly into bearing at 12 o’clock or 6 o’clock positions Stretch Goal – CFD analysis of oil flow to gears & bearing Stretch Goal – Consider options to extend oil life & overhaul period to more than 2 years