Pump rinsing systems and methods

Patent metadata

Field	Value
Publication number	US-12097739-B2
Application number	US-202117499507-A
Country	US
Kind code	B2
Filing date	Oct 12, 2021
Priority date	Oct 12, 2021
Publication date	Sep 24, 2024
Grant date	Sep 24, 2024

Abstract

A rinsing system includes: a pump control module configured to, when a hydraulic line is connected to a port that is fluidly connected to a hydraulic line of a suspension system, selectively operate a hydraulic fluid pump of the suspension system and pump hydraulic fluid from a hydraulic fluid tank of the suspension system through the hydraulic fluid pump toward the hydraulic line; and a valve control module configured to, when the hydraulic line is connected to the port and the hydraulic fluid pump is pumping hydraulic fluid, open valves of the suspension system and fluidly connect the hydraulic fluid pump with the hydraulic line.

First claim

What is claimed is:

1. A rinsing system, the system comprising:
a pump control module configured to, when a first hydraulic line is connected to a port that is fluidly connected to a second hydraulic line of a suspension system, selectively operate a hydraulic fluid pump of the suspension system and pump hydraulic fluid from a hydraulic fluid tank of the suspension system through the hydraulic fluid pump toward the second hydraulic line; and
a valve control module configured to, when the first hydraulic line is connected to the port and the hydraulic fluid pump is pumping hydraulic fluid, open valves of the suspension system and fluidly connect the hydraulic fluid pump with the second hydraulic line,
wherein the pump control module is configured to operate the hydraulic fluid pump and the valve control module is configured to open the valves in response to receipt of user input indicative of a request to rinse the hydraulic fluid pump.

2. The rinsing system of claim 1 further comprising a rinsing module configured to determining whether the rinsing of the hydraulic fluid pump is complete based on a current of an electric motor of the hydraulic fluid pump,
wherein the pump control module is configured to disable the hydraulic fluid pump in response to the determination that the rinsing is complete.

3. The rinsing system of claim 2 wherein the valve control module is configured to close the valves in response to the determination that the rinsing is complete.

4. The rinsing system of claim 2 wherein the rinsing module is configured to determine that the rinsing is complete when a decrease in the current is more negative than a predetermined negative value.

5. The rinsing system of claim 2 wherein the rinsing module is configured to determine that the rinsing is complete when a difference between the current and a previous value of the current is more negative than a predetermined negative value.

6. The rinsing system of claim 5 wherein the rinsing module is configured to:
amplify the difference; and
determine that the rinsing is complete when the amplified difference between is more negative than the predetermined negative value.

7. The rinsing system of claim 6 wherein the rinsing module is configured to:
filter the amplified difference; and
determine that the rinsing is complete when the filtered amplified difference between is more negative than the predetermined negative value.

8. The rinsing system of claim 2 wherein the rinsing module is configured to:
filter the current; and
determining whether the rinsing of the hydraulic fluid pump is complete based on the filtered current.

9. The rinsing system of claim 1 wherein the tank is sealed such that hydraulic fluid cannot be added directly into or drawn from the tank.

10. The rinsing system of claim 1 wherein hydraulic fluid can only be added to and taken out of the suspension system via the port that is fluidly connected to the second hydraulic line of the suspension system.

11. A rinsing method, comprising:
when a first hydraulic line is connected to a port that is fluidly connected to a second hydraulic line of a suspension system, selectively operating a hydraulic fluid pump of the suspension system and pumping hydraulic fluid from a hydraulic fluid tank of the suspension system through the hydraulic fluid pump toward the second hydraulic line;
when the first hydraulic line is connected to the port and the hydraulic fluid pump is pumping hydraulic fluid, opening valves of the suspension system and fluidly connecting the hydraulic fluid pump with the second hydraulic line; and
operating the hydraulic fluid pump and opening the valves in response to receipt of user input indicative of a request to rinse the hydraulic fluid pump.

12. The rinsing method of claim 11 further comprising:
determining whether the rinsing of the hydraulic fluid pump is complete based on a current of an electric motor of the hydraulic fluid pump; and
disabling the hydraulic fluid pump in response to the determination that the rinsing is complete.

13. The rinsing method of claim 12 further comprising closing the valves in response to the determination that the rinsing is complete.

14. The rinsing method of claim 12 further comprising determining that the rinsing is complete when a decrease in the current is more negative than a predetermined negative value.

15. The rinsing method of claim 12 further comprising determining that the rinsing is complete when a difference between the current and a previous value of the current is more negative than a predetermined negative value.

16. The rinsing method of claim 15 further comprising:
amplifying the difference; and
determining that the rinsing is complete when the amplified difference between is more negative than the predetermined negative value.

17. The rinsing method of claim 16 further comprising:
filtering the amplified difference; and
determining that the rinsing is complete when the filtered amplified difference between is more negative than the predetermined negative value.

18. The rinsing method of claim 12 further comprising:
filtering the current; and
determining whether the rinsing of the hydraulic fluid pump is complete based on the filtered current.

19. A rinsing system, the system comprising:
a pump control module configured to, when a first hydraulic line is connected to a port that is fluidly connected to a second hydraulic line of a suspension system, selectively operate a hydraulic fluid pump of the suspension system and pump hydraulic fluid from a hydraulic fluid tank of the suspension system through the hydraulic fluid pump toward the second hydraulic line;
a valve control module configured to, when the first hydraulic line is connected to the port and the hydraulic fluid pump is pumping hydraulic fluid, open valves of the suspension system and fluidly connect the hydraulic fluid pump with the second hydraulic line; and
a rinsing module configured to determining whether rinsing of the hydraulic fluid pump is complete based on a current of an electric motor of the hydraulic fluid pump,
wherein the pump control module is configured to disable the hydraulic fluid pump in response to the determination that the rinsing is complete.

Assignees

• Driv Automotive Inc

Inventors

• Calchand Nandish
• VANDERSMISSEN Bert
• Praet Kylian
• Slootmaekers Stein
• Boon Peter

Classifications

• B60G21/073

  between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected · CPC title

• B60G21/06

  fluid · CPC title

• B60G2204/8304

  using a fluid · CPC title

• B60G2204/82

  left and right unit on same axle · CPC title

• B60G2204/8102

  diagonally arranged · CPC title