Filter for vehicle exhaust system

• US 7,877,989 B1
• Filed: 06/20/2007
• Issued: 02/01/2011
• Est. Priority Date: 06/20/2007
• Status: Expired due to Fees

• Current Assignee: Billy Kirsch
• Original Assignee: Billy Kirsch
• Inventors: Kirsch, Billy
• Primary Examiner(s): Tran; Binh Q
• Application Number:
  US11/765,601
• Time in Patent Office: 1,322 Days
• Field of Search: 602/72, 602/78, 602/95, 602/97, 603/11, 55D/IG.30, 553/853
• US Class Current: 60/311
• CPC Class Codes: F01N 2330/08 Granular material
• CPC Class Codes: F01N 2370/40 Activated carbon or charcoal
• CPC Class Codes: F01N 3/0212 with one or more perforated tubes surrounded by filtering material, e.g. filter candles
• CPC Class Codes: F01N 3/0224 the structure being granular
• CPC Class Codes: F01N 3/2832 granular, e.g. pellets
• CPC Class Codes: F01N 3/2846 specially adapted for granular supports, e.g. pellets
• CPC Class Codes: Y02A 50/20 Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y10S 55/30 Exhaust treatment

Abstract

A vehicle exhaust system includes a catalytic converter connected to an exhaust pipe. An exhaust filter is connected to the exhaust pipe downstream from the catalytic converter. The exhaust filter is a charcoal filter that filters particulates from the air flow in the exhaust pipe. The exhaust filter is threadingly engaged with the exhaust pipe and is disposable.

Claims

1. A vehicle exhaust system, comprising:

an exhaust pipe;

a catalytic converter connected to the exhaust pipe; and

a filter connected to the exhaust pipe downstream from the catalytic converter, wherein the filter includes a first hollow body member adjacent to a filter member, the filter member including a second hollow body member positioned between opposed mesh screens, and charcoal positioned between the opposed meshed screens.

2. The system of claim 1, wherein the filter is a charcoal filter.

3. The system of claim 1, wherein the filter is threaded with the exhaust pipe.

4. The system of claim 1, wherein the filter includes two heat resistant material regions spaced from each other by a charcoal filter region.

5. The system of claim 1, wherein the filter includes first and second exhaust flow paths, the first and second exhaust flow paths being in opposed directions and spaced from each other by a sidewall.

6. The system of claim 1, wherein the filter includes filter and heat dissipation members.

7. A vehicle exhaust system, comprising:

a catalytic converter;

a disposable filter; and

an exhaust pipe connected between the catalytic converter and disposable filter, the disposable filter filtering exhaust from the catalytic converter,

wherein the disposable filter includes a first filter member having a flow diverter adjacent to a first hollow body member and a second filter member having a second hollow body member positioned between opposed mesh screens, and charcoal positioned between the opposed meshed screens.

8. The system of claim 7, wherein the filter includes charcoal.

9. The system of claim 8, wherein the charcoal is activated charcoal.

10. The system of claim 7, wherein the filter is threadingly engaged with the exhaust pipe.

11. The system of claim 7, wherein the filter includes two heat resistant material regions spaced from each other by a charcoal filter region.

12. The system of claim 7, wherein the filter includes first and second exhaust flow paths, the first and second exhaust flow paths being in opposed directions.

13. The system of claim 7, wherein the filter includes a flow diverter.

14. A vehicle, comprising:

a catalytic converter which receives an engine exhaust from a vehicle engine; and

an exhaust filter which receives a converter exhaust from the catalytic converter and filters it to provide a filter exhaust,

wherein the exhaust filter includes a first filter member having a first hollow body member positioned between a first screen and a flow diverter, and a heat dissipation material positioned between the first screen and flow diverter, the exhaust filter including a second filter member having a second hollow body member positioned between opposed mesh screens, and charcoal positioned between the opposed meshed screens.

15. The vehicle of claim 14, further including an exhaust pipe which flows a portion of the converter exhaust to an air intake of the vehicle engine.

16. The vehicle of claim 14, wherein the catalytic converter removes a first amount of particulates from the engine exhaust and the charcoal filter removes a second amount of particulates from the converter exhaust.

17. The vehicle of claim 14, further including a flow rate adjuster which adjusts the flow rate of the converter exhaust.

18. The vehicle of claim 14, wherein the charcoal filter is connected to the exhaust pipe in a repeatably removeable manner.

19. The vehicle of claim 14, wherein the exhaust filter includes charcoal.

20. The vehicle of claim 14, wherein the charcoal filter includes alternating filter regions and heat dissipation material regions.