Fluid management system for a drivetrain

Patent metadata

Field	Value
Publication number	US-12344036-B2
Application number	US-202318358692-A
Country	US
Kind code	B2
Filing date	Jul 25, 2023
Priority date	Jul 25, 2023
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

A fluid management system for a drivetrain includes a first reservoir, a second reservoir, a main suction line, and a second suction line. The first reservoir is positioned in a lower portion of a transmission. The first reservoir has a preselected fluid level. The second reservoir is positioned in a lower portion of the transmission. The second reservoir is separated from the first reservoir by a barrier having an opening. The main suction line has an opening positioned in a lower portion the first reservoir below the preselected fluid level. The second suction line has an opening positioned in a lower portion of the second reservoir.

First claim

What is claimed is:

1. A fluid management system for a drivetrain, comprising:
a first reservoir positioned in a lower portion of a transmission, the first reservoir having a preselected fluid level;
a second reservoir positioned in a lower portion of the transmission, the second reservoir separated from the first reservoir by a barrier having an opening;
a main suction line having an opening positioned in a lower portion of the first reservoir below the preselected fluid level;
a second suction line having an opening positioned in a lower portion of the second reservoir; and
an overflow tube positioned in the opening of the barrier, the overflow tube having a first end positioned above the opening of the main suction line and a second end in fluid communication with the second reservoir, the first end of the overflow tube positioned at a center of the first reservoir, the first end of the overflow tube positioned at the preselected fluid level in the first reservoir, and the first end of the overflow tube positioned higher than the second end.

2. The fluid management system of claim 1 , wherein the main suction line is in fluid communication with a front axle and a rear axle.

3. The fluid management system of claim 1 , wherein the main suction line is in fluid communication with a third reservoir.

4. The fluid management system of claim 1 , wherein the second suction line is in fluid communication with a front axle and a rear axle.

5. The fluid management system of claim 1 , further comprising a transfer pump in fluid communication with the first reservoir, a front axle, and a rear axle, the transfer pump configured to transfer fluid from the first reservoir to the front and rear axles.

6. The fluid management system of claim 1 , further comprising a second pump in fluid communication with the second suction line, the second pump configured to transfer fluid from the second reservoir to the rear axle.

7. The fluid management system of claim 1 , further comprising a second pump in fluid communication with the second suction line, the second reservoir in fluid communication with a front axle, and the second pump configured to transfer fluid from the front axle to the rear axle.

8. The fluid management system of claim 1 , wherein the overflow tube is angled in a fore and aft direction.

9. The fluid management system of claim 1 , wherein the preselected fluid level near the first end of the overflow tube remains substantially the same when the transmission is tilted in one of a fore and aft direction and a side-to-side direction.

10. A fluid management system for a drivetrain, comprising:
a transmission including a first reservoir and a second reservoir in a lower portion of the transmission, the second reservoir separated from the first reservoir by a barrier, the first reservoir having a preselected fluid level, and the barrier having an opening;
a main suction line having an opening positioned in a lower portion of the first reservoir below the preselected fluid level;
a second suction line having an opening positioned in a lower portion of the second reservoir; and
an overflow tube positioned in the opening of the barrier, the overflow tube having a first end positioned above the opening of the main suction line and a second end in fluid communication with the second reservoir, the first end of the overflow tube positioned at a center of the first reservoir, the first end of the overflow tube positioned at the preselected fluid level in the first reservoir, and the first end of the overflow tube positioned higher than the second end.

11. The fluid management system of claim 10 , wherein the main suction line is in fluid communication with a front axle and a rear axle.

12. The fluid management system of claim 10 , wherein the main suction line is in fluid communication with a third reservoir.

13. The fluid management system of claim 10 , wherein the second suction line is in fluid communication with a front axle and a rear axle.

14. The fluid management system of claim 10 , further comprising a transfer pump in fluid communication with the first reservoir, a front axle, and a rear axle, the transfer pump configured to transfer fluid from the first reservoir to the front and rear axles.

15. The fluid management system of claim 10 , further comprising a second pump in fluid communication with the second suction line, the second pump configured to transfer fluid from the second reservoir to the rear axle.

16. The fluid management system of claim 10 , further comprising a second pump in fluid communication with the second suction line, the second reservoir in fluid communication with a front axle, and the second pump configured to transfer fluid from the front axle to the rear axle.

17. The fluid management system of claim 10 , wherein the overflow tube is angled in a fore and aft direction.

18. The fluid management system of claim 10 , wherein the preselected fluid level near the first end of the overflow tube remains substantially the same when the transmission is tilted in one of a fore and aft direction and a side-to-side direction.

Assignees

• Deere & Co

Inventors

• King Kevin R
• Rehn Nathanael K
• Thoreson Curtis P

Classifications

• F16N19/006

  Maintaining oil level (level control in general G05D9/00) · CPC title

• B60B2900/561

  Lubrication · CPC title

• F16N25/00

  Distributing equipment {with or without proportioning devices} · CPC title

• F16N2210/04

  Vehicles · CPC title

• F16N7/40 Primary

  in a closed circulation system · CPC title