Oil supply device
AssigneeSubaru Corporation
InventorYoshihisa Niwa
Life of this patent
Estimating the term…
Abstract
An oil supply device configured to supply oil to a turbocharger of an engine includes a first oil pump, a second oil pump, a first valve, and a second valve. The first oil pump is coupled to a bearing unit of the turbocharger via an oil supply path, and configured to supply oil to the bearing unit. The second oil pump is coupled to the bearing unit via an oil discharge passage, and configured to suck oil from the bearing unit. The first valve is provided in the oil supply path. The first valve is switchable from a connected state to a disconnected state when the engine is to be stopped. The second valve is provided in the oil discharge passage. The second valve is switchable from a connected state to a disconnected state when the engine is to be stopped.
Claims20
An oil supply device configured to supply oil to a turbocharger of an engine, the oil supply device comprising:
- a first oil pump coupled to a bearing unit of the turbocharger via an oil supply path, the first oil pump being configured to supply oil to the bearing unit;
- a second oil pump coupled to the bearing unit via an oil discharge passage, the second oil pump being configured to suck oil from the bearing unit;
- a first valve provided in the oil supply path, the first valve being switchable from a flow-through state to a flow blockage state when the engine is to be stopped;
- and
- a second valve provided in the oil discharge passage, the second valve being switchable from a flow-through state to a flow blockage state when the engine is to be stopped, and wherein at least one of the first valve and the second valve is provided in a housing of the turbocharger.
An oil supply device configured to supply oil to a turbocharger of an engine, the oil supply device comprising:
- a first oil pump coupled to a bearing unit of the turbocharger via an oil supply path, the first oil pump being configured to supply oil to the bearing unit and to an additional engine part needing lubricating from which the oil flows down to an oil pan;
- a second oil pump coupled to the bearing unit via an oil discharge passage, the second oil pump being configured to suck oil from the bearing unit and supply oil to another engine part needing lubricating from which the oil flows down to an oil pan;
- a first valve provided in the oil supply path, the first valve being switchable from a flow-through state to a flow blockage state when the engine is to be stopped;
- and
- a second valve provided in the oil discharge passage, the second valve being switchable from a flow-through state to a flow blockage state when the engine is to be stopped.
Dependencies are inferred from the claim text.