Crankcase ventilation self-cleaning coalescer with intermittent rotation
AssigneeCummins Filtration IP, Inc.
InventorsSaru Dawar, Scott W. Schwartz, Brian W. Schwandt, Barry Mark Verdegan
Life of this patent
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Abstract
A method and system is provided for regenerating and cleaning an air-oil coalescer of a crankcase ventilation system of an internal combustion engine generating blowby gas in a crankcase. The coalescer coalesces oil from the blowby gas. The method and system includes regenerating and cleaning the coalescer by intermittent rotation thereof.
Claims26
A method for regenerating and cleaning an air-oil coalescing filter of a crankcase ventilation system of an internal combustion engine generating blowby gas in a crankcase, the air-oil coalescing filter comprising coalescing filter media, the air-oil coalescing filter coalescing oil from the blowby gas, the method comprising regenerating and cleaning the air-oil coalescing filter by applying centrifugal force thereto by intermittent rotation thereof, the intermittent rotation applied based upon a given parameter associated with at least one of the air-oil coalescing filter and a turbocharger associated with the internal combustion engine.
A method for regenerating and cleaning an air-oil coalescer of a crankcase ventilation system of an internal combustion engine generating blowby gas in a crankcase, the air-oil coalescer coalescing oil from the blowby gas, the method comprising regenerating and cleaning the air oil coalescer by intermittent rotation thereof,
- wherein the internal combustion engine has an oil pump pumping lubricating oil to components of the internal combustion engine and having a relief valve returning excess oil to a sump to protect against overpressure, and wherein the regenerating and cleaning of the air-oil coalescer by intermittent rotation is driven by excess oil flow from the relief valve.
A system for regenerating and cleaning an air-oil coalescing filter of a crankcase ventilation system of an internal combustion engine generating blowby gas in a crankcase, the air-oil coalescing filter comprising coalescing filter media, the air-oil coalescing filter coalescing oil from the blowby gas, the system regenerating and cleaning the air-oil coalescing filter by applying centrifugal force thereto by intermittent rotation thereof, wherein the intermittent rotation is controlled by a controller according to a given parameter associated with at least one of the air-oil coalescing filter and a turbocharger associated with the internal combustion engine.
A system for regenerating and cleaning an air-oil coalescer of a crankcase ventilation system of an internal combustion engine generating blowby gas in a crankcase, the air-oil coalescer coalescing oil from the blowby gas, the system regenerating and cleaning the air-oil coalescer by intermittent rotation thereof,
- wherein the engine has an oil pump pumping lubricating oil to components of the internal combustion engine and having a relief valve returning excess oil to a sump to protect against overpressure, and wherein the system regenerates and cleans the air-oil coalescer by intermittent rotation driven by excess oil flow from the relief valve.
Dependencies are inferred from the claim text.