Multi-position crankshaft lip seal
AssigneePowerhouse Engine Solutions Switzerland IP Holding GmbH
InventorsSandeep Namadev Kamble, Michael Mendoza, Kamala Hasan Pethuraj, John Stephen Roth
Life of this patent
Estimating the term…
Abstract
Various systems and methods are provided for utilizing a crankshaft lip seal over the course of a first overhaul life and a second overhaul life. In one example, a method includes installing the crankshaft lip seal between a flywheel housing and a crankshaft of an engine and operating the engine with the crankshaft lip seal. The method further includes removing the crankshaft lip seal, re-machining a floating seal sleeve coupled to the crankshaft or the flywheel housing, and replacing a lip. The crankshaft lip seal is then re-installed between the flywheel housing and the crankshaft and the engine operated with the re-installed crankshaft lip seal.
Claims16
A method for an engine, the method comprising:
- installing a crankshaft floating lip seal assembly between a flywheel housing of the engine and a crankshaft of the engine, the crankshaft floating lip seal assembly comprising a floating seal sleeve and a lip;
- operating the engine with the crankshaft floating lip seal assembly;
- removing the crankshaft floating lip seal assembly, re-machining the floating seal sleeve coupled to the crankshaft or the flywheel housing, and replacing the lip;
- reinstalling the crankshaft floating lip seal assembly between the flywheel housing and the crankshaft;
- and
- operating the engine with the reinstalled crankshaft floating lip seal assembly.
A system, comprising:
- a crankshaft;
- a flywheel housing;
- and a multi-position crankshaft lip seal installed between the flywheel housing and the crankshaft, wherein a lip of the multi-position crankshaft lip seal is in sealing engagement with the crankshaft, a drain groove within the multi-position crankshaft lip seal is aligned with a drain passage within the flywheel housing, wherein after a first life has been met, the multi-position crankshaft lip seal is uninstalled, re-machined, the lip replaced with another lip, and reinstalled for a second life, and wherein the re-machining includes re-machining a floating seal sleeve coupled to the crankshaft or the flywheel housing to shift a bottom edge of the floating seal sleeve towards a front edge of the lip, the lip lining a central aperture of the floating seal sleeve.
A system for a multi-position crankshaft lip seal, the system comprising:
- a floating seal sleeve comprising a drain groove, a lip, and a sacrificial material;
- and a flange section extending perpendicularly from the floating seal sleeve, where the sacrificial material is positioned opposite the flange section and extends away from the lip, the sacrificial material later machined off without altering the lip or a function of the drain groove, wherein the multi-position crankshaft lip seal is positioned between a flywheel housing and a crankshaft of an engine, and wherein the drain groove is aligned with a drain passage within a flywheel housing and lubricant seeping between a crankshaft and the multi-position crankshaft lip seal is drained through the drain groove into the drain passage.
Dependencies are inferred from the claim text.