Fluid sump for accommodating a lubricating fluid

Patent metadata

Field	Value
Publication number	US-11933205-B2
Application number	US-202117364702-A
Country	US
Kind code	B2
Filing date	Jun 30, 2021
Priority date	Jul 2, 2020
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

A fluid sump for accommodating a lubricating fluid and transmission housing for a vehicle comprising such a fluid sump. The fluid sump may comprise a first compartment for collecting the lubricating fluid, a second compartment in which the lubricating fluid can be brought in contact with a rotating member, and an intermediate compartment having a first opening for introducing the lubricating fluid from the first compartment into the intermediate compartment, a second opening for introducing the lubricating fluid from the intermediate compartment into the second compartment, and a floating element. In one or more examples, the first opening can be opened and closed by the floating element, and the first compartment, the intermediate compartment and the second compartment are provided with ambient pressure.

First claim

The invention claimed is:

1. A fluid sump for accommodating a lubricating fluid, comprising:
a first compartment for collecting the lubricating fluid;
a second compartment in which the lubricating fluid is able to be brought into contact with a rotating member;
an intermediate compartment having a first opening for introducing the lubricating fluid from the first compartment into the intermediate compartment, a second opening for introducing the lubricating fluid from the intermediate compartment into the second compartment, and a floating element; and
a first partition wall separating the first compartment and the intermediate compartment from one another and containing the first opening such that, upon regular use of the fluid sump, the lubricating fluid is able to pass the first opening in a basically vertical first flow direction, wherein
the first opening is configured such that the first opening is able to be opened and closed by the floating element, and wherein
the first compartment, the intermediate compartment and the second compartment are provided with ambient pressure.

2. The fluid sump according to claim 1 , wherein the fluid sump is for use in an area of a vehicle transmission.

3. The fluid sump according to claim 1 , comprising a second partition wall separating the intermediate compartment and the second compartment from one another and containing the second opening such that, upon regular use of the fluid sump, the lubricating fluid is able to pass the second opening in a basically horizontal second flow direction.

4. The fluid sump according to claim 3 , wherein the second opening is disposed within the second partition wall at a distance to the first opening which substantially corresponds to a height of the intermediate compartment.

5. The fluid sump according to claim 1 , wherein a diameter of the second opening is smaller than or equal to 10 mm and/or larger than or equal to 2 mm, or smaller than or equal to 8 mm and/or larger than or equal to 2.5 mm.

6. The fluid sump according to claim 1 , wherein dimensions of the intermediate compartment and the floating element are defined such that a length and a width of the floating element is basically equal to an inner length and an inner width of the intermediate compartment.

7. The fluid sump according to claim 1 , wherein the floating element is ball-shaped or ellipsoid-shaped.

8. The fluid sump according to claim 1 , further comprising a hollow tube which is fluidly connected with the intermediate compartment for equalizing a pressure within the intermediate compartment with ambient pressure.

9. The fluid sump according to claim 1 , further comprising a thermostatic valve disposed within the second opening for controlling a lubrication fluid flow from the intermediate compartment to the second compartment according to a lubrication fluid temperature.

10. The fluid sump according to claim 1 , wherein the intermediate compartment has a length between 1.5 and 2 times a main dimension of the floating element and/or a width comparable to the main dimension of the floating element.

11. A fluid sump for accommodating a lubricating fluid, comprising:
a first compartment for collecting the lubricating fluid;
a second compartment in which the lubricating fluid is able to be brought into contact with a rotating member; and
an intermediate compartment having a first opening for introducing the lubricating fluid from the first compartment into the intermediate compartment, a second opening for introducing the lubricating fluid from the intermediate compartment into the second compartment, and a floating element, wherein the first opening is configured such that the first opening is able to be opened and closed by the floating element, wherein
the first compartment, the intermediate compartment and the second compartment are provided with ambient pressure, and wherein
dimensions of the intermediate compartment and the floating element are defined such that a length and a width of the floating element is basically equal to an inner length and an inner width of the intermediate compartment.

12. A fluid sump for accommodating a lubricating fluid, comprising:
a first compartment for collecting the lubricating fluid;
a second compartment in which the lubricating fluid is able to be brought into contact with a rotating member;
an intermediate compartment having a first opening for introducing the lubricating fluid from the first compartment into the intermediate compartment, a second opening for introducing the lubricating fluid from the intermediate compartment into the second compartment, and a floating element, wherein the first opening is configured such that the first opening is able to be opened and closed by the floating element; and
a hollow tube which is fluidly connected with the intermediate compartment for equalizing a pressure within the intermediate compartment with ambient pressure, wherein
the first compartment, the intermediate compartment and the second compartment are provided with ambient pressure.

Assignees

• Dana Italia Srl

Inventors

• Rinaldi Pier Paolo
• Gioia Nicoletta

Classifications

• F01M11/0004 Primary

  Oilsumps · CPC title

• F16H57/0409

  characterised by increasing efficiency, e.g. by reducing splash losses · CPC title

• F16H57/0443

  for supply of lubricant during tilt or high acceleration, e.g. problems related to the tilt or extreme acceleration of the transmission casing and the supply of lubricant under these conditions · CPC title

• F16H57/0447

  Control of lubricant levels, e.g. lubricant level control dependent on temperature · CPC title

• F16H57/0453

  Section walls to divide a gear sump · CPC title