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
Life of this patent
Estimating the term…
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.
Claims15
A snow vehicle comprising:
- an endless track;
- a frame;
- a transmission;
- a two-stroke engine having a crankshaft mechanically coupled to drive the endless track via the transmission, wherein the two-stroke engine comprises:
- a two-stroke engine oiling system that distributes oil from a first oil tank to the two-stroke engine at a first oil pressure;
- a high-pressure direct injection (HPDI) pressure pump assembly mechanically coupled to the crankshaft;
- and
- a pressurized oiling system that includes a pump mechanically coupled to a crankshaft of the two-stroke engine to distribute oil from a second oil tank to the HPDI pressure pump at a second oil pressure, wherein oil distributed to the HPDI pressure pump is returned to the second oil tank.
A snow vehicle comprising:
- an endless track;
- a frame;
- a transmission;
- a two-stroke engine having a crankshaft mechanically coupled to drive the endless track via the transmission;
- a turbocharger coupled to provide compressed air to the two-stroke engine;
- an intercooler configured to cool the compressed air provided by the turbocharger prior to the compressed air being provided to the two-stroke engine;
- a cooling circuit comprising a coolant tank and a heat exchanger, wherein the cooling circuit provides coolant from the heat exchanger to the intercooler, and from the intercooler to the two-stroke engine, wherein coolant provided to the intercooler is lower in temperature than coolant provided to the two-stroke engine.
Dependencies are inferred from the claim text.