Systems and methods for variable displacement engine oil flow
AssigneeFord Global Technologies, LLC
InventorsJeff Fluharty, Jonathan Crowe
Life of this patent
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Abstract
Methods and systems are provided for oil flow for a variable displacement engine of a vehicle. In one example, a system may include an engine having a plurality of deactivatable cylinders capped by a cylinder head, an oil supply passage formed in the cylinder head and joined to a first oil inlet, deactivatable hydraulic lash adjusters (HLAs) arranged along a flow path of the oil supply passage, and a primer filter disposed within the cylinder head and fluidly coupling the oil supply passage to a second oil inlet. Oil may flow through the primer filter to the oil supply passage to maintain a flow rate of oil through the oil supply passage above a pre-determined flow rate.
Claims17
A system, comprising:
- an engine including a plurality of deactivatable cylinders capped by a cylinder head;
- an oil supply passage formed in the cylinder head and joined to a first oil inlet;
- a plurality of deactivatable hydraulic lash adjusters (HLAs) arranged along a flow path of the oil supply passage and configured to receive engine oil directly from the oil supply passage to control deactivation of the plurality of deactivatable cylinders;
- and
- a primer filter disposed within the cylinder head and fluidly coupling the oil supply passage to a second oil inlet;
- wherein the first oil inlet is arranged at a first end of the oil supply passage and the second oil inlet is arranged at an opposing, second end of the oil supply passage;
- and
- wherein the second end of the oil supply passage joins directly to an opening formed in an end surface of the cylinder head, with the oil supply passage sealed by a plug disposed within the opening.
A system, comprising:
- an engine including a plurality of cylinders capped by a cylinder head having a camshaft;
- an oil supply passage and first oil inlet joined together within the cylinder head;
- a plurality of deactivatable hydraulic lash adjusters seated within the cylinder head and fed directly by the oil supply passage;
- and
- a primer filter disposed within the cylinder head and configured to provide oil from a second oil inlet to the oil supply passage;
- wherein the first oil inlet is arranged at a first end of the oil supply passage and the second oil inlet is arranged at an opposing, second end of the oil supply passage;
- and
- wherein the oil supply passage is positioned parallel with the camshaft.
A system, comprising:
- an engine;
- a plurality of deactivatable cylinders capped by a cylinder head at a first end and an opposing, second end of the cylinder head;
- a first oil supply passage joined to a first oil inlet and extending within the cylinder head from the first end to a first plurality of deactivatable hydraulic lash adjusters;
- a second oil supply passage joined to a second oil inlet and extending within the cylinder head from the second end to a second plurality of deactivatable hydraulic lash adjusters;
- a first primer filter disposed within the cylinder head and fluidly coupling the first oil supply passage to a third oil inlet;
- and
- a second primer filter disposed within the cylinder head and fluidly coupling the second oil supply passage to a fourth oil inlet;
- wherein the first primer filter and the second primer filter are each arranged parallel with each other and perpendicular to each of the first oil supply passage and the second oil supply passage.
Dependencies are inferred from the claim text.