Wear-resistant coating for oil pump cavity

• Main Authors: Maki, Clifford E, Schepak, Antony George, Boileau, James Maurice
• Format: Patent
• Language: English
• Published: 02.07.2019
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CRANKCASE VENTILATING; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENGINE PLANTS IN GENERAL; HEATING; INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES ORMATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHERTHAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; STEAM ENGINES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; WEAPONS

Oil pumps having wear-resistant coatings applied thereto and methods of applying the coatings are disclosed. The oil pump may include an aluminum housing that defines a cavity. A steel rotor may be disposed within the cavity and configured to rotate therein such that a portion of the steel rotor contacts the aluminum housing. A metal coating (e.g., steel) may cover at least a portion of the aluminum housing in a region that is configured to be contacted by the steel rotor. An integrated oil pump and engine cover is disclosed including an aluminum body having a peripheral wall defining a cavity. The peripheral wall may form a portion of the oil pump housing and the cavity may receive a steel rotor. A wear-resistant coating (e.g., steel) may cover at least a portion of the peripheral wall in a region that is configured to be contacted by the steel rotor.