System and method for cleaning an air intake screen of a work vehicle

Patent metadata

Field	Value
Publication number	US-11719203-B2
Application number	US-202016782687-A
Country	US
Kind code	B2
Filing date	Feb 5, 2020
Priority date	Feb 5, 2020
Publication date	Aug 8, 2023
Grant date	Aug 8, 2023

Abstract

A system for cleaning an air intake screen of a work vehicle may include an engine air intake assembly having an air intake screen through which an airflow is directed for subsequent delivery to an engine of a work vehicle. The system may further include a nozzle provided in operative association with the engine air intake assembly and directed towards the air intake screen. Additionally, the system may include a pressurized fluid source configured to supply pressurized fluid to the nozzle. The pressurized fluid received by the nozzle is expelled from the nozzle and directed through the air intake screen.

First claim

What is claimed is:

1. A system for cleaning an air intake screen of a work vehicle, the system comprising:
an engine air intake assembly including an air intake screen through which an airflow is directed for subsequent delivery into an engine of a work vehicle;
a nozzle provided in operative association with the engine air intake assembly and directed towards the air intake screen; and
a pressurized fluid source configured to supply pressurized fluid to the nozzle,
wherein the pressurized fluid received by the nozzle is expelled from the nozzle and directed through the air intake screen.

2. The system of claim 1 , further comprising a valve fluidly coupled between the nozzle and the pressurized fluid source, the valve being configured to regulate the supply of the pressurized fluid from the pressurized fluid source to the nozzle.

3. The system of claim 2 , further comprising a controller communicatively coupled to the valve, the controller being configured to selectively open and close the valve to regulate the supply of the pressurized fluid from the pressurized fluid source to the nozzle.

4. The system of claim 3 , further comprising a pressure sensor configured to generate pressure data indicative of an air pressure within an intake duct of the engine air intake assembly, the intake duct defining an air inlet relative to which the air intake screen is supported,
wherein the controller is communicatively coupled to the pressure sensor, the controller being configured to open the valve when the air pressure within the intake duct exceeds a pressure threshold to allow the pressurized fluid from the pressurized fluid source to be supplied to the nozzle and expelled from the nozzle towards the air intake screen.

5. The system of claim 4 , wherein the pressure sensor is positioned within a portion of the intake duct to allow the pressure sensor to detect the air pressure within the intake duct.

6. The system of claim 3 , wherein the controller is communicatively coupled to a user interface, the controller being configured to open the valve upon receipt of an input from the user interface.

7. The system of claim 1 , wherein the engine air intake assembly comprises an intake duct and an air filter assembly downstream of the intake duct, the intake duct defining an air inlet relative to which the air intake screen is supported for receiving the airflow within the intake duct.

8. The system of claim 7 , wherein the pressurized fluid is directed through the air intake screen from an inner side of the air intake screen to an outer side of the air intake screen opposite the inner side, the inner side of the air intake screen facing towards an interior of the intake duct.

9. The system of claim 1 , wherein the pressurized fluid is supplied through the nozzle to remove debris from the air intake screen.

10. The system of claim 1 , wherein the nozzle is fixed relative to the air intake screen.

11. A method for cleaning an air intake screen of an engine intake assembly of a work vehicle, the method comprising:
receiving an input associated with cleaning the air intake screen through which an airflow is directable for subsequent delivery into the engine of the work vehicle;
supplying pressurized fluid from a pressurized fluid source supported on the work vehicle to a nozzle configured to direct the pressurized fluid towards the air intake screen; and
expelling the pressurized fluid from the nozzle through the air intake screen to remove debris from the air intake screen.

12. The method of claim 11 , wherein the input is received from a pressure sensor configured to generate pressure data indicative of an air pressure within an intake duct, the intake duct defining an air inlet relative to which the air intake screen is supported.

13. The method of claim 12 , further comprising comparing the air pressure within the intake duct to a pressure threshold,
wherein supplying the pressurized fluid from the pressurized fluid source comprises supplying the pressurized fluid from the pressurized fluid source when the air pressure within the intake duct exceeds the pressure threshold.

14. The method of claim 13 , further comprising ceasing the supply of the pressurized fluid from the pressurized fluid source when the air pressure within the intake duct is equal to or falls below the pressure threshold.

15. The method of claim 12 , wherein the pressure sensor is positioned within the intake duct to allow the pressure sensor to detect the air pressure within the intake duct.

16. The method of claim 12 , wherein the air intake screen has an inner side facing an interior of the intake duct and an outer side opposite the inner side, the nozzle being positioned within the intake duct such that the pressurized fluid discharged from the nozzle is directed from the inner side to the outer side of the of the air intake screen.

17. The method of claim 11 , wherein the input is received from an operator via a user interface.

18. The method of claim 11 , wherein supplying the pressurized fluid from the pressurized fluid source comprises opening a valve fluidly coupled between the nozzle and the pressurized fluid source.

19. The method of claim 11 , further comprising ceasing the supply of the pressurized fluid from the pressurized fluid source after a predetermined period of time.

20. The system of claim 1 , wherein the engine air intake assembly further includes:
a pre-cleaner downstream of the air intake screen such that the pre-cleaner is configured to receive the airflow filtered by the air intake screen; and
an air filter downstream of the pre-cleaner such that the air filter is configured to receive the airflow filtered by the pre-cleaner,
wherein the airflow filtered by the air filter is directed for subsequent delivery into the engine of the work vehicle.

Assignees

• Cnh Ind America Llc

Inventors

• Singh Samrendra
• Ghorpade Kaushal
• Levato Luca
• Abbassi Hesam
• Tamamidis Panos

Classifications

• F02M35/086 Primary

  Dust removal by flushing, blasting, pulsating or aspirating flow, washing or the like; Mechanical dust removal, e.g. by using scrapers · CPC title

• F02M35/0205 Primary

  Details, e.g. sensors or measuring devices · CPC title

• F02M35/0216

  arranged in series, e.g. pre- and main filter in series · CPC title

• B01D46/71

  with pressurised gas, e.g. pulsed air · CPC title

• B08B5/02

  Cleaning by the force of jets, e.g. blowing-out cavities {(airguns or nozzles per se B05B1/005)} · CPC title