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US 2020/0400049 A1Published application
Engine oil pressure regulation system
AssigneeFord Global Technologies, LLC
InventorsAbhijyoth Vempati, David Simon
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a lubricant system for an engine. In one example, the system includes external delivery lines coupling an oil reservoir of the engine to a plurality of cylinder head oil galleries, the engine also having internal oil passages. An amount of hydraulic fluid delivered via the external delivery lines is controlled by a pressure control valve having a vent line.
Claims20
A system comprising:
- delivery lines, arranged external to an engine, the delivery lines coupling an oil reservoir of the engine to a plurality of cylinder head oil galleries along an external surface of the engine, the oil reservoir also coupled to the plurality of cylinder head oil galleries via oil passages internal to the engine;
- a pressure control valve, arranged external to the engine, for controlling an amount of hydraulic fluid delivered through the delivery lines, each of the delivery lines coupled to the pressure control valve;
- and
- an external vent line configured to couple the pressure control valve to the oil reservoir when a pressure in the cylinder head oil galleries rises above a threshold pressure, and when the pressure control valve is degraded and stuck open, wherein the threshold pressure is set at the pressure control valve.
1 more element
A lubricant system for an engine, comprising;
- an oil sump arranged below an engine block;
- a cylinder head arranged above the engine block;
- an internal passage, internal to the engine block and coupling the oil sump to cylinder head oil galleries of the engine;
- one or more external passages, external to both the engine block and the cylinder head, also coupling the oil sump to the cylinder head oil galleries, the one or more external passages separate from the internal passage;
- and
- a pressure control valve coupled to each of the one or more external passages, the pressure control valve having a vent line configured to flow oil to the oil sump when a pressure in the cylinder head oil galleries rises above a threshold pressure, wherein the threshold pressure is set at the pressure control valve and wherein, when the pressure control valve is degraded and stuck open, oil flows from the pressure control valve to the oil sump through the vent line.
3 more elements
(canceled)
A kit for an engine, comprising;
- a pressure control valve;
- a feed line coupled to an inlet of the pressure control valve;
- passages coupled to outlets of the pressure control valve at first ends of each of the passages and configured to couple to oil galleries in a cylinder head of the engine at second ends of each of the passages;
- and
- a vent line connected to the pressure control valve and configured to vent oil from the oil galleries in the cylinder head when a hydraulic pressure in the oil galleries increases above a threshold pressure, wherein the threshold pressure is set at the pressure control valve and wherein, when the pressure control valve is degraded and stuck open, oil flows from the pressure control valve to the oil sump through the vent line.
2 more elements
Dependencies are inferred from the claim text.