Pressurized oil system powered by two-stroke engine
AssigneeArctic Cat Inc.
InventorsAlexander Konrad Fuhrman, Ryan Douglas Hayes, Andrew Jon Ellsworth, Cord Miller Christensen, David Mark Sabo, Derek Robert Kvenvold
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Abstract
A two-stroke engine comprises a first oiling system and a second oiling system. The first oiling system includes a low-pressure pump that distributes oil from a first oil tank to the two-stroke engine. The second oiling system includes a pump mechanically coupled to a crankshaft of the two-stroke engine, wherein the pump distributes oil from a second oil tank to an accessory at a pressure greater than the first oil pressure, wherein oil distributed to the accessory is returned to the second oil tank.
Claims20
A pressurized oil system comprising:
- an oil tank;
- an engine oil pump;
- a two-stroke engine fluidically coupled to the engine oil pump;
- a turbocharger coupled to the two-stroke engine;
- a turbocharger oil pump coupled to the oil tank and fluidically coupled to the turbocharger;
- and
- a pressure regulator coupled to the turbocharger oil pump, wherein the pressure regulator controls an oil pressure of the turbocharger oil pump in response to an engine load.
A two-stroke internal combustion engine comprising:
- a turbocharger including:
- a turbine in fluidic communication with an exhaust inlet port,
- a compressor configured to provide compressed air at an air outlet port,
- one or more bearing components,
- an oil inlet port,
- an oil outlet port;
- a turbocharger oil pump coupled to an oil tank and fluidically coupled to the oil inlet port of the turbocharger and fluidically coupled to the oil outlet port of the turbocharger;
- and
- a pressure regulator in communication with the turbocharger oil pump,
- wherein the pressure regulator controls an oil pressure of the turbocharger oil pump in response to an engine load.
A method of operating a two-stroke internal combustion engine, the method comprising:
- pumping a first oil to an engine inlet with an engine oil pump;
- pumping a second oil to a turbocharger with a turbocharger oil pump, the turbocharger oil pump separate from the engine oil pump;
- regulating oil pressure of the second oil from the turbocharger oil pump via a bypass, wherein the oil pressure is pressurized based on an engine load;
- and
- filtering the second oil with an oil filter,
- wherein the turbocharger oil pump is coupled to a crankshaft of the two-stroke internal combustion engine.
Dependencies are inferred from the claim text.