Systems and methods for variable displacement engine oil flow
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United States of America Patent
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Nov 8, 2022
Grant Date -
N/A
app pub date -
Jun 9, 2021
filing date -
Jun 9, 2021
priority date (Note) -
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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.
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