Piston cooling jet system

Patent metadata

Field	Value
Publication number	US-11248515-B2
Application number	US-201916530862-A
Country	US
Kind code	B2
Filing date	Aug 2, 2019
Priority date	Aug 2, 2019
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

Systems are provided for a piston cooling jet system for cooling a piston of a locomotive engine. In one example, a piston cooling jet system includes a feed body hydraulically coupled to an oil reservoir and a pair of piston cooling tubes extending radially outwards, in opposite directions, from the feed body. The tubes may have showerhead outlet features at one end for uniformly spraying oil onto inlets of a piston oil gallery housed in the piston.

First claim

The invention claimed is:

1. A piston cooling system for a locomotive engine, comprising:
a feed body hydraulically configured to be coupled to an oil reservoir, the feed body having a central axis;
a first piston cooling tube extending laterally to protrude radially out from one side of the feed body relative to the central axis, the first tube having a first showerhead outlet element; and
a second piston cooling tube extending laterally to protrude radially out from another side of the feed body relative to the central axis, the second tube having a second showerhead outlet element,
wherein the first piston cooling tube comprises a first section and a second section, the first section protruding laterally outwards from one side of the feed body along a first longitudinal axis, and the second section extending from the first section along a second longitudinal axis, the first longitudinal axis at a first angle relative to the central axis, the second axis at a second angle relative to the central axis, the first showerhead outlet element extending upwards from the second section, and
wherein the second piston cooling tube comprises a third section and a fourth section, the third section protruding laterally outwards from the other side of the feed body along a third longitudinal axis, and the fourth section extending from the third section along a fourth longitudinal axis, the third longitudinal axis at a third angle relative to the central axis, the fourth axis at a fourth angle relative to the central axis, the second showerhead outlet element extending upwards from the fourth section.

2. The system of claim 1 , wherein the first showerhead outlet element is positioned diametrically opposite to the second showerhead outlet element and wherein each of the first showerhead outlet element and the second showerhead outlet element include a larger central aperture radially surrounded by a plurality of smaller, peripheral apertures.

3. The system of claim 2 , wherein each of the first showerhead outlet element and the second showerhead outlet element of the first and second cooling tubes are coupled to a main passage of the corresponding first and second cooling tubes via an angled, hollow connector element.

4. The system of claim 2 , wherein the first longitudinal axis of the first cooling tube is at an angle relative to the central axis of the feed body on the side of the feed body, and wherein the third longitudinal axis of the second cooling tube is at the same angle relative to the central axis of the feed body on the another side of the feed body.

5. The system of claim 4 , wherein an angle defined by the first longitudinal axis and the third longitudinal axis is in a range between 30 degrees and 90 degrees.

6. The system of claim 4 , wherein a central axis of the first showerhead outlet element is angled relative to the first longitudinal axis of the first cooling tube, and wherein a central axis of the second showerhead outlet element of the second tube is angled relative to the third longitudinal axis of the second cooling tube.

7. The system of claim 5 , wherein the first showerhead outlet element extends laterally away from each of the longitudinal axis of the first cooling tube and the central axis of the feed body, and wherein the second showerhead outlet element extends laterally away from each of the longitudinal axis of the second cooling tube and the central axis of the feed body.

8. The system of claim 1 , wherein the feed body is coupled to a piston oil gallery housed within a piston, and wherein the first showerhead outlet element protrudes towards a first inlet of the piston oil gallery, and wherein the second showerhead outlet element protrudes towards a second inlet of the piston oil gallery, the first inlet located on a first side of the piston oil gallery relative to a central axis, the second inlet located on a second, opposite side of the piston oil gallery relative to the central axis.

9. The system of claim 1 , wherein the feed body is cylindrical and coupled in between a first piston oil gallery housed within a first piston and a second piston oil gallery housed within a second piston, and wherein the first showerhead outlet element protrudes towards an inlet of the first piston oil gallery, and the second showerhead outlet element protrudes towards an inlet of the second piston oil gallery.

10. The system of claim 1 , further comprising a fastening element having a first surface with a first circular recess for receiving the feed body, a second surface perpendicular to the first surface and having an oval recess through which the first cooling tube is supported, and a third surface perpendicular to the first surface and parallel to the second surface having another oval recess through which the second cooling tube is supported, the fastening element coupling the cooling system to an engine block via the first surface.

11. A cooling system in a locomotive engine, comprising:
a feed body for receiving oil from an oil sump and dispensing oil to a cylinder piston, the feed body having a central cylindrical region with a central axis, a tapered upper end and a tapered bottom end;
a first cooling tube having a first section extending upwards and protruding laterally outwards from one side of the central cylindrical region of the feed body along a first longitudinal axis, and a second section extending from the first section along a second longitudinal axis, the second axis at a first angle relative to the first axis, the first axis at a second angle relative to the central axis; and
a second cooling tube having a first section extending upwards and protruding laterally outwards from another side of the central cylindrical region of the feed body along a third longitudinal axis, and a second section extending from the first section of the second cooling tube along a fourth longitudinal axis, the fourth axis at the first angle relative to the third axis, the third axis at the second angle relative to the central axis, wherein a respective outlet of the second section of each of the first and second cooling tubes has a large aperture surrounded circumferentially by a plurality of smaller apertures.

12. The system of claim 11 , wherein the first section of each of the first and second cooling tubes includes a first set of connected passages, wherein the second section of each of the first and second cooling tubes includes a second passage, the first section coupled to the second section via an angled connector passage.

13. The system of claim 11 , further comprising a fastening element for fastening the feed body, the first cooling tube, and the second cooling tube to a cylinder bore, the fastening element having a first surface with a first circular recess for receiving the feed body, a second surface having a plane perpendicular to a plane of the first surface and having an oval recess supporting the first section of the first cooling tube, and a third surface having a plane perpendicular to the first surface and parallel to the second surface, the third surface having another oval recess supporting the first section of the second cooling tube, wherein the second section of the first cooling tube extends beyond the second surface and the second section of the second cooling tube extends beyond the third surface.

14. The system of claim 13 , wherein the plane of the first surface further includes a pair of openings on either side of the first circular recess for receiving a fastener for coupling the fastening element to the cylinder bore.

15. The system of claim 14 , wherein the pair of openings are positioned

Assignees

• Transp Ip Holdings Llc

Inventors

• Patil Abhijit Eknath

Classifications

• F01M1/08 Primary

  Lubricating systems characterised by the provision therein of lubricant jetting means · CPC title

• F01P3/10

  Cooling by flow of coolant through pistons · CPC title

• F02F1/10

  for liquid cooling · CPC title

• F01M11/02

  Arrangements of lubricant conduits · CPC title

• B61C5/02

  Arrangement or disposition of intakes and apparatus for supplying, circulating, and filtering air for combustion and engine-cooling purposes · CPC title