No Filter No Run Fluid Filter with Integration of Low Pressure Fluid System

Patent metadata

Field	Value
Publication number	US-2016201624-A1
Application number	US-201414912303-A
Country	US
Kind code	A1
Filing date	Aug 14, 2014
Priority date	Aug 19, 2013
Publication date	Jul 14, 2016
Grant date	—

Abstract

A no filter no run (NFNR) fluid filter and fluid filter assembly are provided. The NFNR fluid filter assembly includes a fluid filter, a filter head or filter housing, and a bypass flow path. The by-pass flow path may be sealed off when a compliant filter is installed (a filter without a bypass seal), fluid may flow to the bypass flow path.

First claim

What is claimed:

1 . A fluid filter, comprising:
a filter media having a filtered fluid side and an unfiltered fluid side; a first end plate; a second end plate; and a bypass seal; wherein the filter media is disposed between the first end plate and the second end plate, the fluid filter is configured to be engaged with a filter head, the filter head including a bypass flow outlet, and the bypass seal is configured to block fluid flow to the bypass flow outlet when the fluid filter is engaged with the filter head.

2 . The fluid filter of claim 1 , wherein the filter media is cylindrical.

3 . The fluid filter of claim 1 , wherein the fluid filter further comprises an internal seal configured to seal against the filter head and separate an unfiltered fluid from a filtered fluid.

4 . The fluid filter of claim 3 , wherein the internal seal is located on the first endplate.

5 . The fluid filter of claim 1 , further comprising an air vent valve configured to vent air from the fluid filter.

6 . The fluid filter of claim 1 , wherein the bypass seal is located on the first endplate.

7 . The fluid filter of claim 1 , wherein the second end plate is a closed end plate.

8 . The fluid filter of claim 1 , wherein the first end plate includes a filtered fluid outlet.

9 . A fluid filter assembly, comprising:
a fluid filter including:
a filter media having a filtered fluid side and an unfiltered fluid side;
a first end plate;
a second end plate; and
a bypass seal; and
a filter head including:
a fluid inlet;
a fluid outlet; and
a bypass flow passage;
wherein the filter media is disposed between the first end plate and the second end plate, the fluid filter is configured to engage the filter head, the bypass seal is configured to block fluid flow to the bypass flow passage when the fluid filter is engaged with the filter head.

10 . The fluid filter assembly of claim 9 , wherein the fluid filter further comprises an internal seal configured to seal against the filter head and separate an unfiltered fluid from a filtered fluid.

11 . The fluid filter assembly of claim 10 , wherein the internal seal is located on the first endplate.

12 . The fluid filter assembly of claim 9 , further comprising an air vent valve configured to vent air from the fluid filter assembly.

13 . The fluid filter assembly of claim 9 , wherein the bypass seal is located on the first endplate.

14 . The fluid filter assembly of claim 9 , wherein the second end plate is a closed end plate.

15 . The fluid filter assembly of claim 9 , wherein the first end plate includes a filtered fluid outlet configured to supply filtered fluid to the fluid outlet of the filter head.

16 . The fluid filter assembly of claim 9 , further comprising a filter housing configured to engage the filter head and enclose the fluid filter.

17 . The fluid filter assembly of claim 9 , wherein the fluid outlet is configured to supply filtered fuel to an engine.

18 . The fluid filter assembly of claim 9 , wherein the bypass flow path is configured to supply a bypass fluid flow to at least one of a fuel tank or a fuel transfer pump.

19 . The fluid filter assembly of claim 9 , wherein the fluid filter is a fuel filter, and the bypass flow path is configured such that in the absence of a correct fluid filter with a bypass seal the amount of fuel that flows through the fluid outlet is insufficient to start or run an engine.

20 . The fluid filter assembly of claim 9 , wherein the fluid filter is a fuel filter, and wherein the bypass flow path is configured such that when the bypass seal blocks fuel flow through the bypass flow path, the amount of fuel that flows through the fluid outlet is sufficient to start or run an engine.

21 . A fluid filter cartridge comprising:
a filter media having a filtered fluid side and an unfiltered fluid side; a first end plate; a second end plate; and a bypass seal; wherein the filter media is disposed between the first end plate and the second end plate, the fluid filter is configured to be disposed within a filter housing, the filter housing including a bypass flow outlet, the bypass seal configured to block fluid flow to the bypass flow outlet when the fluid filter is disposed in the filter housing.

22 . The fluid filter cartridge of claim 21 , further comprising an internal seal.

23 . The fluid filter cartridge of claim 22 , wherein the internal seal is disposed on the first end plate, and the bypass seal is disposed on the second end plate.

24 . The fluid filter cartridge of claim 21 , further comprising a center tube extending between the first endplate and the second endplate.

25 . The fluid filter cartridge of claim 24 , wherein the center tube includes the bypass seal.

26 . The fluid filter cartridge of claim 21 , wherein the first endplate includes an opening configured to engage a standpipe of the filter housing.

27 . The fluid filter cartridge of claim 21 , wherein the first endplate is a closed endplate and the bypass seal is disposed on an internal surface of the first endplate.

28 . The fluid filter cartridge of claim 21 , further comprising a drain seal configured to block fluid flow to a drain of the filter housing when the fluid filter is disposed in the filter housing.

29 . A fluid filter assembly, comprising:
a fluid filter cartridge including:
a filter media having a filtered fluid side and an unfiltered fluid side;
a first end plate;
a second end plate; and
a bypass seal;
a filter housing including:
a housing cover;
a housing base;
a fluid inlet;
a fluid outlet; and
a bypass flow outlet;
wherein the filter media is disposed between the first end plate and the second end plate, the fluid filter is configured to be disposed within the filter housing, and the bypass seal is configured to block fluid flow to the bypass flow outlet when the fluid filter is disposed in the filter housing.

30 . The fluid filter assembly of claim 29 , wherein the housing base further comprises a standpipe including the bypass flow path and a fluid outflow path configured to supply fluid flow to the fluid outlet.

31 . The fluid filter assembly of claim 30 , wherein the standpipe includes tapered walls configured to engage the bypass seal.

32 . The fluid filter assembly of claim 29 , wherein the housing base further comprises a drain outlet, and the fluid filter cartridge further comprises a drain seal.

33 . The fluid filter assembly of claim 32 , wherein the housing base further comprises a standpipe, and the standpipe includes a plurality of apertures forming a drain outlet.

34 . The fluid filter assembly of claim 29 , wherein the filter housing further comprises a plurality of structures, and the fluid filter cartridge further comprises a plurality of surfaces configured to engage the plurality of structures such that the fluid filter cartridge is properly located within the filter housing.

35 . The fluid filter assembly of claim 29 , wherein the fluid outlet is configured to supply filtered fuel to an engine.

36 . The fluid filter assembly of claim 29 , wherein the bypass flow path is configured to supply a bypass fluid flow to at lea

Assignees

• Cummins Filtration Ip Inc

Inventors

• Jiang Zemin
• Hoverson Gregory W
• Delano W Beale
• Decapua Dennis M
• Prabhala Bharadwaj R
• Pandey Rahul R
• Hogade Mayur
• Atmuri Bhargawa S

Classifications

• B01D2201/0415

  Details of supporting structures · CPC title

• B01D2201/291

  End caps · CPC title

• B01D35/306

  Filter mounting adapter · CPC title

• B01D35/005

  Filters specially adapted for use in internal-combustion engine lubrication or fuel systems · CPC title

• B01D29/90

  for feeding · CPC title