DIESEL PARTICULATE FILTRATION (DPF) SYSTEM

• US 20110067388A1
• Filed: 09/24/2009
• Published: 03/24/2011
• Est. Priority Date: 09/24/2009
• Status: Abandoned Application

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Zhang, Xiaogang
• Application Number:
  US12/565,780
• Publication Number:
  US 20110067388A1
• Time in Patent Office: Days
• US Class Current: 60/311
• CPC Class Codes: B01D 2279/30 for treatment of exhaust gases from IC Engines
• CPC Class Codes: B01D 46/18 Particle separators, e.g. dust precipitators, using filtering belts
• CPC Class Codes: B01D 46/446 by pressure measuring
• CPC Class Codes: F01N 2330/10 Fibrous material, e.g. mineral or metallic wool
• CPC Class Codes: F01N 3/0214 with filters comprising movable parts, e.g. rotating filters
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A fiber-paper based Diesel particulate Filtration (DPF) apparatus possessing high filtration efficiency and a high porosity, the apparatus comprising at least two rollers capable of rotating over rotors with the help of a controlled motor and capable of supplying fiber paper at the exhaust gas inlet. As the exhaust gas moves over the fiber paper supplied from one of the rollers, the soot gets gradually collected on the fiber paper and keeps on increasing the backpressure thereon. The moment when the backpressure increases beyond a limit, the loaded section of the fiber paper is replaced by fresh fiber paper from the other roller. The loaded fiber is sent to an off-board regeneration facility for regeneration.

Claims

6. A method for removing soot from exhaust gases of an internal combustion engine comprising:

introducing a first portion of a filter material from a supply of the filter material into a path of exhaust gasses to collect the soot on the material; and

subsequently moving the first portion of the material out of the path while moving a second portion of the material from the supply into the path.

7. The method recited in claim 6 wherein the supply is a continuous roll of the material.

8. The method recited in claim 7 wherein the material is moved as a function of measured backpressure.

9. The method recited in claim 8 wherein the material is moved when the measured backpressure exceeds a predetermined limit.

10. A Diesel Particulate Filtration (DPF) system comprising:

a supply roller and a take-up roller;

a filter material disposed on the supply roller and having an end connected to the supply roller;

portions of the material between the supply roller and the take-up roller passing through exhaust gasses passing through the system; and

a motor for moving the portions of the material between the supply roller and the take-up roller.

11. The system recited in claim 10 including a control system for operating the motor to move the portions of the material between the supply roller and the take-up roller as a function of measured back pressure in the system.

12. The system recited in claim 11 wherein the motor operates to move the portions of the material between the supply roller and the take-up roller when the measured backpressure in the system exceeds a predetermined limit.

13. The system recited in claim 12 wherein the portions of the material between the supply roller and the take-up roller is supplied with fresh material from the supply roller.

14. A Diesel Particulate Filtration (DPF) system comprising:

a supply of filter material, a first portion of the material being disposed in a path of exhaust gasses passing through the system to collect soot in the exhaust gasses; and

a motor for moving the first portion of the material out of the path while drawing a second portion of the material from the supply into the path.

1. A Diesel Particulate Filtration (DPF) system comprising:

a supply of diesel particulate filtering material, a first portion of the material being disposed in a path of exhaust gasses passing through the system to collect diesel particulate in the exhaust gasses; and

a motor for moving the first portion of the diesel particulate filtering material out of the path while drawing a second portion of the diesel particulate filtering material from the supply into the path.

2. The system recited in claim 1 wherein the material is paper.

3. The system recited in claim 1 wherein the supply of material paper is in a continuous roll.

4. The system recited in claim 3 including a control system for operating the motor to move the material as a function of measured backpressure.

5. The system recited in claim 4 wherein the motor operates to move the material when the measured backpressure exceeds a predetermined limit.

15. The system recited in claim 14 wherein the supply of material is in a continuous roll.

16. The system recited in claim 15 wherein the material is a fiber paper material.

17. The system recited in claim 16 wherein the material is a fiber paper having a high porosity of about 80%.

18. The system recited in claim 14 including a control system for operating the motor to move the material as a function of measured backpressure.

19. The system recited in claim 18 wherein the motor operates to move the material when the measured backpressure exceeds a predetermined limit.

20. The system recited in claim 18 wherein the material is a fiber paper material.

21. The system recited in claim 20 wherein the material is a fiber paper having a high porosity of about 80%.

22. A Diesel Particulate Filtration (DPF) system comprising:

a supply of material disposed in a supply region,

a collection region,

an electromechanical system for conveying the material in the supply region to collection region with portions of the material between the supply region and the collection region being conveyed through a region separating the inlet section from the outlet section.

23. The system recited in claim 22 wherein the electromechanical system operates to move the when the measured backpressure exceeds a predetermined limit.

22-1. The system recited in claim 21 including a control system for operating the electromechanical system to move the material as a function of measured backpressure.