US 12,228,202 B1
Hydraulic fluid pick-up tube
Mark Claywell, Birmingham, MI (US); and Sean Michael McGowan, Northville, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Nov. 15, 2023, as Appl. No. 18/510,573.
Int. Cl. F01M 11/06 (2006.01); F16H 57/04 (2010.01)
CPC F16H 57/0443 (2013.01) [F16H 57/0404 (2013.01); F16H 57/0436 (2013.01); F16H 57/0452 (2013.01); F16H 57/0475 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for manufacturing an oil intake system for a vehicle, the method comprising:
providing an oil reservoir having an internal volume with an internal shape including an oil reservoir bottom;
determining a selected amount of oil received in the oil reservoir;
selecting a theoretical maximum positive pitch angle of a first plane of an upper surface of the selected amount of oil in the oil reservoir;
selecting a theoretical minimum negative pitch angle of a second plane of the upper surface of the selected amount of oil in the oil reservoir;
determining a theoretical bottom plane at a selected positive distance above the oil reservoir bottom; wherein the oil reservoir has the theoretical maximum positive pitch angle of the first plane of the upper surface of the selected amount of oil in the oil reservoir; the theoretical minimum negative pitch angle of a second plane of the upper surface of the selected amount of oil in the oil reservoir; and the theoretical bottom plane at the selected positive distance above the oil reservoir bottom;
determining a shape and a size of an oil pick-up tube and of an opening in the oil pick-up tube to locate the opening below the first plane at the maximum positive pitch angle and below the second plane at the minimum negative pitch angle, wherein the opening is defined by a peripheral edge of the oil pick-up tube, wherein the peripheral edge lies substantially within an opening plane, wherein the opening plane has a positive pitch angle of at least 30% of the maximum positive pitch angle;
fabricating the oil pick-up tube with the shape, the size, and the opening; and
receiving the oil pick-up tube in the oil reservoir, wherein the oil pick-up tube has a distal end formed with the opening, wherein the opening is located below the first plane at the theoretical maximum positive pitch angle and below the second plane at the theoretical minimum negative pitch angle, wherein the opening is defined by the peripheral edge of the oil pick-up tube, wherein the peripheral edge lies substantially within the opening plane, wherein the opening plane has the positive pitch angle of at least half of the theoretical maximum positive pitch angle.