EXHAUST SYSTEM INTEGRITY TESTER

• US 20150276552A1
• Filed: 03/26/2015
• Published: 10/01/2015
• Est. Priority Date: 03/27/2014
• Status: Active Grant

• Current Assignee: Dwight Eric Story
• Original Assignee: Dwight Eric Story
• Inventors: STORY, Dwight Eric
• Granted Patent: US 10,030,568 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F01N 11/00 Monitoring or diagnostic devices for exhaust-gas treatment apparatus , e.g. for catalytic activity safety, indicating or supervising devices for internal combustion engines F02B77/08; testing of machines G01M13/00
• CPC Class Codes: G01M 15/106 using pressure sensors
• CPC Class Codes: G01M 3/025 Details with respect to the testing of engines or engine parts
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A system and method are provided for testing and verification of an exhaust system. The system and method introduce a low pressure flow of gas into the exhaust system through an adaptor that fits into or about an exhaust pipe of the exhaust system. The low pressure gas can then be used, in the absence of engine noise, heat, and/or dangerous exhaust gases, to determine if one or more leaks exist in the exhaust system.

Claims

1. A method for verifying the integrity of an exhaust system, comprising:

fitting an adaptor with an orifice of the exhaust system;

introducing pressurized gas into the exhaust system through the adaptor; and

verifying an operating integrity of the exhaust system based on a response by the exhaust system to the pressurized gas.

2. The method according to claim 1, wherein the step of verifying an operating integrity comprises:

verifying the operating integrity of the exhaust system when a first exhaust system gas pressure increases to a first predetermined test pressure, and determining the exhaust system does not exhibit operating integrity if the first exhaust system gas pressure does not increase to the first predetermined test pressure.

3. The method according to claim 1, wherein the step of introducing pressurized gas comprises:

pressurizing the gas; and

monitoring a first pressure of the pressurized gas within the exhaust system; and

increasing pressurization of the pressurized gas.

4. The method according to claim 1, wherein the step of verifying comprises:

determining whether, during a first predetermined time period, the first exhaust system gas pressure increases to a value at least about equal to the first predetermined test pressure such that the exhaust system exhibits operating integrity, and further determining, during the first predetermined time period, whether the first exhaust system gas pressure does not increase to the value at least about equal to the first predetermined test pressure such that the exhaust system fails to exhibit operating integrity.

5. The method according to claim 4, wherein the step of verifying further comprises:

continuing to introduce pressurized gas into the exhaust system at a second predetermined gas pressure; and

determining whether, during a second predetermined time period, a second exhaust system gas pressure increases to a value at least about equal to the second predetermined test pressure such that the exhaust system exhibits operating integrity, and further determining, during the second predetermined time period, whether the second exhaust system gas pressure does not increase to the value at least about equal to the second predetermined test pressure such that the exhaust system fails to exhibit operating integrity.

6. The method according to claim 1, further comprising:

connecting a retention device to the adaptor and a retention point, such that the retention device is configured to substantially prevent the adaptor from being expelled from the orifice of the exhaust system in the event of an over pressure situation.

7. An exhaust system verification apparatus for verifying the integrity of an exhaust system, comprising:

an adaptor configured to fit with an orifice of the exhaust system, and fluidly connect to and seal the orifice of the exhaust system.

a gas pump apparatus configured to introduce pressurized gas into an orifice of the exhaust system; and

a gas pressure detection apparatus configured to verify an operating integrity of the exhaust system based on a response of the exhaust system to the pressurized gas.

8. The apparatus according to claim 7, further comprising:

wherein the gas pressure detection apparatus is further configured to verify an operating integrity of the exhaust system when a first exhaust system gas pressure increases to a first predetermined test pressure, and wherein the pressure detection apparatus is further configured to determine the exhaust system does not exhibit operating integrity if the first exhaust system gas pressure does not increase to the first predetermined test pressure.

9. The apparatus according to claim 7, wherein a first portion of the pressure detection apparatus is part of the adaptor and wherein the first portion is configured to measure an internal gas pressure of the exhaust system,

wherein the first portion of the pressure detection apparatus includes a pressure transducer, and

wherein a gas transfer device configured to allow substantially free flow of gas from an internal portion of the exhaust system to the pressure transducer, the gas transfer device fluidly connected to the pressure transducer.

10. The apparatus according to claim 7, wherein the gas pressure detection apparatus is further configured to:

detect, during a first predetermined time period, whether the first exhaust system gas pressure increases to a value at least about equal to the first predetermined test pressure such that the exhaust system exhibits operating integrity, and

detect, during the first predetermined time period, whether the first exhaust system gas pressure does not increase to the value at least about equal to the first predetermined test pressure such that the exhaust system fails to exhibit operating integrity.

12. The apparatus according to claim 7, wherein the adaptor comprises a balloon type device configured to fit into the orifice of the exhaust system, inflate upon introduction of the pressurized gas, and fluidly seal the orifice of the exhaust system.

13. The apparatus according to claim 7, wherein the adaptor comprises a semi-rigid device configured to fit into the orifice and fluidly seal the orifice of the exhaust system.

14. The apparatus according to claim 7, wherein the adaptor is further configured to fluidly connect and seal the orifice of the exhaust system with the adaptor that fits around the orifice.

15. The apparatus according to claim 14, wherein the adaptor comprises:

a device configured to fit around the orifice of the exhaust system,

wherein the device includes a fluidly sealing flange configured to fluidly seal the orifice of the exhaust system, and

wherein the fluidly sealing flange is further configured to include a quick-connect/disconnect apparatus to fluidly seal the sealing flange.

16. The system according to claim 7, further comprising:

a retention device configured to be removably attached to the adaptor and a retention point, such that the retention device is further configured to substantially prevent the adaptor from being expelled from the orifice of the exhaust system in the event of an over pressure situation.

17. An adaptor for testing the integrity of an exhaust system, comprising:

a body;

a first conduit extending through the body;

a source of pressurized air attached to the first conduit;

a second conduit in the body;

a pressure sensor in the second conduit; and

a pressure relief valve attached to the body.

11. The apparatus according to claim 17, wherein the gas pump apparatus is further configured to continue to introduce pressurized gas into the exhaust system through the adaptor at a second predetermined gas pressure at an end of the first predetermined time period, and

wherein the gas pressure detection apparatus is further configured to detect, during a second predetermined time period, whether a second exhaust system gas pressure increases to a value at least about equal to the second predetermined test pressure such that the exhaust system exhibits operating integrity, and is further configured to detect, during the second predetermined time period, whether the second exhaust system gas pressure does not increase to the value at least about equal to the second predetermined test pressure such that the exhaust system fails to exhibit operating integrity.

18. The adapter of claim 17, wherein the pressure relief valve is attached to the first conduit.

19. The adapter of claim 17, wherein the body is conical shaped.

20. The adapter of claim 17, wherein the body is inflatable.