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US 2018/0087415 A1Published application
Oil supply unit and motor vehicle
AssigneeFord Global Technologies, LLC
InventorsAndreas Schmitt, Hans Guenter Quix, David van Bebber
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for an oil supply unit with a collecting vessel for collecting oil. In one example, a method may include maintaining a pressure of the collecting vessel during an engine off, wherein maintaining the pressure may further include maintain a temperature of the oil in the collecting vessel.
Claims20
An oil supply unit comprising:
- a collecting vessel for collecting oil, a feed line which leads from the collecting vessel to an engine which is to be supplied with oil, a pump which is arranged in the feed line, a return line which leads from the engine to the collecting vessel, and a circulation line which leads from the feed line to the collecting vessel, further comprising a pressure accumulator which is connected via an accumulator line to the feed line;
- and
- a two-way valve which can be switched in dependence of a pressure which prevails in the feed line, wherein the two-way valve is in a first switched position in the case of a first pressure and is in a second switched position in the case of a second pressure which is higher than the first pressure, wherein the circulation line is shut off in the first switched position of the two-way valve and is opened in the second switched position of the two-way valve.
A system comprising:
- a collecting vessel for storing lubricant being fluidly coupled to a feed line and a circulation line, a pump and an engine being arranged along the feed line;
- an accumulator line fluidly coupled to both the feed and circulation lines;
- and
- a pressure accumulator arranged along the accumulator line, the pressure accumulator configured to store lubricant at a pressure independent of a pressure of the feed line, and where the pressure accumulator comprises thermal insulation.
1 more element
A method comprising:
- flowing lubricant from a lubricant supply unit to a pressure accumulator, the pressure accumulator comprising a thermal insulation;
- and
- maintaining a pressure of the lubricant in the pressure accumulator during an engine off.
Dependencies are inferred from the claim text.