Systems and methods for hydraulic lash adjuster oil flow
AssigneeFord Global Technologies, LLC
InventorsForest Heggie, Robert Stephen Furby, Jeff D. Fluharty
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for oil flow for hydraulic lash adjusters of a vehicle engine. In one example, an engine cylinder bank includes a plurality of deactivatable hydraulic lash adjusters and a plurality of non-deactivatable hydraulic lash adjusters. A first linear oil supply passage and a second linear oil supply passage are formed within the cylinder bank and extend linearly through the cylinder bank without bends or curvature to the deactivatable and non-deactivatable hydraulic lash adjusters, with the deactivatable and non-deactivatable hydraulic lash adjusters having a same length.
Claims18
A system, comprising:
- an engine including a cylinder bank having a plurality of deactivatable inner cylinders and a plurality of outer cylinders;
- a cylinder head capping the cylinder bank;
- a first linear oil supply passage formed in the cylinder head and arranged parallel to a crankshaft of the engine;
- a plurality of deactivatable hydraulic lash adjusters (HLAs) arranged along a linear flow path of the first linear oil supply passage and configured to receive engine oil directly from the first linear oil supply passage so as to control deactivation of the plurality of deactivatable inner cylinders;
- and
- a plurality of non-deactivatable HLAs arranged along the linear flow path.
A system, comprising:
- an engine including a plurality of cylinders capped by a cylinder head;
- a first oil supply passage extending in a straight line through the cylinder head between a first side of the cylinder head and a second side of the cylinder head;
- a second oil supply passage extends in a straight line through the cylinder head between the first side of the cylinder head and the second side of the cylinder head;
- a plurality of deactivatable hydraulic lash adjusters seated within the cylinder head and in a flow path of the first oil supply passage and a flow path of the second oil supply passage;
- and
- a plurality of non-deactivatable hydraulic lash adjusters seated within the cylinder head and in the flow path of the first oil supply passage and the flow path of the second oil supply passage.
A system, comprising:
- an engine;
- a first cylinder bank of the engine including a plurality of inner deactivatable cylinders arranged between a plurality of outer non-deactivatable cylinders disposed at opposing sides of the first cylinder bank;
- a second cylinder bank of the engine including a plurality of inner non-deactivatable cylinders arranged between a plurality of outer deactivatable cylinders disposed at opposing sides of the second cylinder bank;
- and
- a first oil supply passage and a second oil supply passage each extending from the opposing sides of the first cylinder bank through the first cylinder bank without bending or curving, the first oil supply passage and second oil supply passage intersecting a first plurality of deactivatable hydraulic lash adjusters and a first plurality of non-deactivatable hydraulic lash adjusters.
Dependencies are inferred from the claim text.